./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound10.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/ps5-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 4cd3813e1162515d6dfe6f021a67e8bd41b689ea28e27900ea441d7fd3bbe5cc --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-18 16:34:15,531 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-18 16:34:15,585 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-18 16:34:15,587 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-18 16:34:15,588 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-18 16:34:15,611 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-18 16:34:15,612 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-18 16:34:15,612 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-18 16:34:15,613 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-18 16:34:15,614 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-18 16:34:15,614 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-18 16:34:15,614 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-18 16:34:15,615 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-18 16:34:15,616 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-18 16:34:15,616 INFO L153 SettingsManager]: * Use SBE=true [2024-09-18 16:34:15,617 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-18 16:34:15,617 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-18 16:34:15,617 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-18 16:34:15,617 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-18 16:34:15,618 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-18 16:34:15,618 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-18 16:34:15,620 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-18 16:34:15,621 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-18 16:34:15,621 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-18 16:34:15,621 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-18 16:34:15,621 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-18 16:34:15,621 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-18 16:34:15,621 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-18 16:34:15,622 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-18 16:34:15,622 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-18 16:34:15,623 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-18 16:34:15,623 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-18 16:34:15,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 16:34:15,623 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-18 16:34:15,623 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-18 16:34:15,623 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-18 16:34:15,623 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-18 16:34:15,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-18 16:34:15,624 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-18 16:34:15,624 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-18 16:34:15,624 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-18 16:34:15,624 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-18 16:34:15,624 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4cd3813e1162515d6dfe6f021a67e8bd41b689ea28e27900ea441d7fd3bbe5cc Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-18 16:34:15,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-18 16:34:15,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-18 16:34:15,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-18 16:34:15,822 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-18 16:34:15,822 INFO L274 PluginConnector]: CDTParser initialized [2024-09-18 16:34:15,823 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound10.c [2024-09-18 16:34:17,075 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-18 16:34:17,207 INFO L384 CDTParser]: Found 1 translation units. [2024-09-18 16:34:17,207 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound10.c [2024-09-18 16:34:17,212 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/2a64077d3/47460129409d44e8bf2d9f7d7cfe15cf/FLAG8de11791e [2024-09-18 16:34:17,222 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/2a64077d3/47460129409d44e8bf2d9f7d7cfe15cf [2024-09-18 16:34:17,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-18 16:34:17,224 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-18 16:34:17,226 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-18 16:34:17,226 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-18 16:34:17,230 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-18 16:34:17,231 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 04:34:17" (1/1) ... [2024-09-18 16:34:17,232 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b68de88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:17, skipping insertion in model container [2024-09-18 16:34:17,232 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 04:34:17" (1/1) ... [2024-09-18 16:34:17,245 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-18 16:34:17,362 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/ps5-ll_valuebound10.c[458,471] [2024-09-18 16:34:17,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 16:34:17,388 INFO L200 MainTranslator]: Completed pre-run [2024-09-18 16:34:17,397 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/ps5-ll_valuebound10.c[458,471] [2024-09-18 16:34:17,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 16:34:17,422 INFO L204 MainTranslator]: Completed translation [2024-09-18 16:34:17,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:17 WrapperNode [2024-09-18 16:34:17,424 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-18 16:34:17,425 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-18 16:34:17,425 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-18 16:34:17,426 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-18 16:34:17,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:17" (1/1) ... [2024-09-18 16:34:17,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:17" (1/1) ... [2024-09-18 16:34:17,440 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-18 16:34:17,440 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-18 16:34:17,440 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-18 16:34:17,440 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-18 16:34:17,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-18 16:34:17,449 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:17" (1/1) ... [2024-09-18 16:34:17,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:17" (1/1) ... [2024-09-18 16:34:17,450 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:17" (1/1) ... [2024-09-18 16:34:17,461 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]. [2024-09-18 16:34:17,462 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:17" (1/1) ... [2024-09-18 16:34:17,462 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:17" (1/1) ... [2024-09-18 16:34:17,463 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:17" (1/1) ... [2024-09-18 16:34:17,466 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:17" (1/1) ... [2024-09-18 16:34:17,467 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:17" (1/1) ... [2024-09-18 16:34:17,467 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:17" (1/1) ... [2024-09-18 16:34:17,468 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-18 16:34:17,469 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-18 16:34:17,469 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-18 16:34:17,469 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-18 16:34:17,469 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:17" (1/1) ... [2024-09-18 16:34:17,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 16:34:17,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:34:17,492 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) [2024-09-18 16:34:17,497 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 [2024-09-18 16:34:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-18 16:34:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-18 16:34:17,525 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-18 16:34:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-18 16:34:17,525 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-18 16:34:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-18 16:34:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-18 16:34:17,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-18 16:34:17,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-18 16:34:17,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-18 16:34:17,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-18 16:34:17,526 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-18 16:34:17,573 INFO L242 CfgBuilder]: Building ICFG [2024-09-18 16:34:17,575 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-18 16:34:17,710 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-18 16:34:17,711 INFO L291 CfgBuilder]: Performing block encoding [2024-09-18 16:34:17,733 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-18 16:34:17,733 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-18 16:34:17,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 04:34:17 BoogieIcfgContainer [2024-09-18 16:34:17,734 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-18 16:34:17,736 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-18 16:34:17,736 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-18 16:34:17,739 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-18 16:34:17,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 04:34:17" (1/3) ... [2024-09-18 16:34:17,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132ec7b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 04:34:17, skipping insertion in model container [2024-09-18 16:34:17,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:17" (2/3) ... [2024-09-18 16:34:17,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132ec7b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 04:34:17, skipping insertion in model container [2024-09-18 16:34:17,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 04:34:17" (3/3) ... [2024-09-18 16:34:17,742 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound10.c [2024-09-18 16:34:17,757 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-18 16:34:17,757 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-18 16:34:17,808 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-18 16:34:17,814 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;@5698160e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-18 16:34:17,814 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-18 16:34:17,817 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) [2024-09-18 16:34:17,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-18 16:34:17,822 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:34:17,823 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:34:17,823 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:34:17,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:34:17,827 INFO L85 PathProgramCache]: Analyzing trace with hash -620791457, now seen corresponding path program 1 times [2024-09-18 16:34:17,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:34:17,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519110831] [2024-09-18 16:34:17,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:34:17,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:34:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:34:17,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:34:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:34:17,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:34:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:34:17,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:34:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:34:17,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-18 16:34:17,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:34:17,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519110831] [2024-09-18 16:34:17,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519110831] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 16:34:17,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 16:34:17,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-18 16:34:17,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388208385] [2024-09-18 16:34:17,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 16:34:17,978 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-18 16:34:17,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:34:17,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-18 16:34:17,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-18 16:34:17,998 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) [2024-09-18 16:34:18,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:34:18,016 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2024-09-18 16:34:18,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-18 16:34:18,018 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 [2024-09-18 16:34:18,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:34:18,022 INFO L225 Difference]: With dead ends: 48 [2024-09-18 16:34:18,022 INFO L226 Difference]: Without dead ends: 23 [2024-09-18 16:34:18,024 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-18 16:34:18,026 INFO L434 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 [2024-09-18 16:34:18,027 INFO L435 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] [2024-09-18 16:34:18,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-18 16:34:18,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-18 16:34:18,069 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) [2024-09-18 16:34:18,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-09-18 16:34:18,071 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 21 [2024-09-18 16:34:18,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:34:18,071 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-09-18 16:34:18,071 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-18 16:34:18,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:34:18,072 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-09-18 16:34:18,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-18 16:34:18,073 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:34:18,073 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:34:18,073 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-18 16:34:18,074 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:34:18,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:34:18,074 INFO L85 PathProgramCache]: Analyzing trace with hash -959298087, now seen corresponding path program 1 times [2024-09-18 16:34:18,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:34:18,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823540711] [2024-09-18 16:34:18,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:34:18,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:34:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 16:34:18,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [966850685] [2024-09-18 16:34:18,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:34:18,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:34:18,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:34:18,121 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) [2024-09-18 16:34:18,122 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-18 16:34:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:34:18,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-18 16:34:18,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:34:18,263 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-18 16:34:18,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-18 16:34:18,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:34:18,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823540711] [2024-09-18 16:34:18,264 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 16:34:18,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966850685] [2024-09-18 16:34:18,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966850685] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 16:34:18,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 16:34:18,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-18 16:34:18,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840460274] [2024-09-18 16:34:18,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 16:34:18,265 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 16:34:18,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:34:18,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 16:34:18,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-18 16:34:18,266 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) [2024-09-18 16:34:18,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:34:18,310 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-09-18 16:34:18,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-18 16:34:18,311 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 [2024-09-18 16:34:18,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:34:18,312 INFO L225 Difference]: With dead ends: 34 [2024-09-18 16:34:18,312 INFO L226 Difference]: Without dead ends: 30 [2024-09-18 16:34:18,313 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-18 16:34:18,313 INFO L434 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 [2024-09-18 16:34:18,314 INFO L435 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] [2024-09-18 16:34:18,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-18 16:34:18,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-18 16:34:18,322 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) [2024-09-18 16:34:18,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-09-18 16:34:18,324 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2024-09-18 16:34:18,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:34:18,325 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-09-18 16:34:18,325 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-18 16:34:18,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:34:18,325 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-09-18 16:34:18,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-18 16:34:18,326 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:34:18,326 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:34:18,339 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-18 16:34:18,528 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 [2024-09-18 16:34:18,529 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:34:18,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:34:18,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1544704875, now seen corresponding path program 1 times [2024-09-18 16:34:18,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:34:18,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934143856] [2024-09-18 16:34:18,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:34:18,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:34:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 16:34:18,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [390656319] [2024-09-18 16:34:18,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:34:18,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:34:18,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:34:18,557 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) [2024-09-18 16:34:18,558 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-18 16:34:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:34:18,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-18 16:34:18,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:34:18,668 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-18 16:34:18,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:34:18,742 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-18 16:34:18,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:34:18,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934143856] [2024-09-18 16:34:18,742 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 16:34:18,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390656319] [2024-09-18 16:34:18,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390656319] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-18 16:34:18,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-18 16:34:18,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-18 16:34:18,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389682209] [2024-09-18 16:34:18,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 16:34:18,743 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 16:34:18,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:34:18,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 16:34:18,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-18 16:34:18,744 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) [2024-09-18 16:34:18,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:34:18,786 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2024-09-18 16:34:18,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-18 16:34:18,786 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 [2024-09-18 16:34:18,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:34:18,788 INFO L225 Difference]: With dead ends: 36 [2024-09-18 16:34:18,788 INFO L226 Difference]: Without dead ends: 32 [2024-09-18 16:34:18,788 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-18 16:34:18,789 INFO L434 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 [2024-09-18 16:34:18,789 INFO L435 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] [2024-09-18 16:34:18,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-18 16:34:18,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-18 16:34:18,796 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) [2024-09-18 16:34:18,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2024-09-18 16:34:18,797 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 28 [2024-09-18 16:34:18,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:34:18,798 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2024-09-18 16:34:18,800 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-18 16:34:18,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:34:18,801 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2024-09-18 16:34:18,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-18 16:34:18,801 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:34:18,801 INFO L216 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] [2024-09-18 16:34:18,815 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-18 16:34:19,002 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 [2024-09-18 16:34:19,002 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:34:19,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:34:19,003 INFO L85 PathProgramCache]: Analyzing trace with hash 21814286, now seen corresponding path program 1 times [2024-09-18 16:34:19,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:34:19,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014596798] [2024-09-18 16:34:19,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:34:19,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:34:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 16:34:19,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041568379] [2024-09-18 16:34:19,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:34:19,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:34:19,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:34:19,038 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 16:34:19,039 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-18 16:34:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:34:19,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-18 16:34:19,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:34:19,174 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-18 16:34:19,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:34:19,272 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-18 16:34:19,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:34:19,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014596798] [2024-09-18 16:34:19,273 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 16:34:19,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041568379] [2024-09-18 16:34:19,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041568379] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:34:19,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-18 16:34:19,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-09-18 16:34:19,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276037339] [2024-09-18 16:34:19,274 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-18 16:34:19,274 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-18 16:34:19,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:34:19,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-18 16:34:19,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-09-18 16:34:19,275 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-18 16:34:19,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:34:19,373 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2024-09-18 16:34:19,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-18 16:34:19,373 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 39 [2024-09-18 16:34:19,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:34:19,375 INFO L225 Difference]: With dead ends: 49 [2024-09-18 16:34:19,375 INFO L226 Difference]: Without dead ends: 41 [2024-09-18 16:34:19,376 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-09-18 16:34:19,376 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 1 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 16:34:19,377 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 135 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 16:34:19,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-18 16:34:19,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-18 16:34:19,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 11 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-18 16:34:19,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2024-09-18 16:34:19,398 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 39 [2024-09-18 16:34:19,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:34:19,398 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2024-09-18 16:34:19,398 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-18 16:34:19,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:34:19,399 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2024-09-18 16:34:19,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-18 16:34:19,400 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:34:19,400 INFO L216 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] [2024-09-18 16:34:19,414 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-18 16:34:19,605 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:34:19,607 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:34:19,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:34:19,607 INFO L85 PathProgramCache]: Analyzing trace with hash -244405920, now seen corresponding path program 2 times [2024-09-18 16:34:19,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:34:19,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512406417] [2024-09-18 16:34:19,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:34:19,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:34:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 16:34:19,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1855201299] [2024-09-18 16:34:19,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 16:34:19,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:34:19,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:34:19,672 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 16:34:19,673 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-18 16:34:19,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 16:34:19,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:34:19,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-18 16:34:19,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:34:19,911 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-09-18 16:34:19,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:34:20,169 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-09-18 16:34:20,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:34:20,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512406417] [2024-09-18 16:34:20,170 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 16:34:20,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855201299] [2024-09-18 16:34:20,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855201299] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:34:20,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-18 16:34:20,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2024-09-18 16:34:20,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890094352] [2024-09-18 16:34:20,170 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-18 16:34:20,171 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-18 16:34:20,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:34:20,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-18 16:34:20,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2024-09-18 16:34:20,172 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 21 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 13 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) [2024-09-18 16:34:20,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:34:20,609 INFO L93 Difference]: Finished difference Result 66 states and 82 transitions. [2024-09-18 16:34:20,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-18 16:34:20,609 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 13 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) Word has length 60 [2024-09-18 16:34:20,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:34:20,610 INFO L225 Difference]: With dead ends: 66 [2024-09-18 16:34:20,610 INFO L226 Difference]: Without dead ends: 58 [2024-09-18 16:34:20,611 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=173, Invalid=819, Unknown=0, NotChecked=0, Total=992 [2024-09-18 16:34:20,611 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 19 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-18 16:34:20,612 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 387 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-18 16:34:20,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-09-18 16:34:20,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2024-09-18 16:34:20,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 16 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-18 16:34:20,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2024-09-18 16:34:20,636 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 60 [2024-09-18 16:34:20,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:34:20,636 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2024-09-18 16:34:20,637 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 13 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) [2024-09-18 16:34:20,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:34:20,637 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2024-09-18 16:34:20,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-09-18 16:34:20,639 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:34:20,639 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 10, 10, 10, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:34:20,656 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-18 16:34:20,839 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:34:20,840 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:34:20,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:34:20,840 INFO L85 PathProgramCache]: Analyzing trace with hash -235169010, now seen corresponding path program 3 times [2024-09-18 16:34:20,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:34:20,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429403408] [2024-09-18 16:34:20,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:34:20,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:34:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 16:34:20,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [427176930] [2024-09-18 16:34:20,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-18 16:34:20,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:34:20,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:34:20,927 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 16:34:20,928 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-18 16:34:21,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-18 16:34:21,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:34:21,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-18 16:34:21,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:34:21,267 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 30 proven. 157 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-09-18 16:34:21,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:34:29,549 WARN L854 $PredicateComparison]: unable to prove that (or (= (+ (* 6 c_main_~y~0) (* c_main_~y~0 c_main_~y~0)) (+ (* 6 c_main_~c~0) (* c_main_~c~0 c_main_~y~0))) (not (= (mod (+ (* 15 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 29 c_main_~y~0) (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) 30) 0))) is different from false [2024-09-18 16:34:37,584 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-18 16:34:49,609 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-18 16:35:01,748 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-18 16:35:09,763 WARN L876 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((v_main_~y~0_BEFORE_CALL_44 Int) (v_main_~c~0_BEFORE_CALL_31 Int)) (or (= (+ (* v_main_~y~0_BEFORE_CALL_44 v_main_~c~0_BEFORE_CALL_31) (* 6 v_main_~c~0_BEFORE_CALL_31)) (+ (* v_main_~y~0_BEFORE_CALL_44 6) (* v_main_~y~0_BEFORE_CALL_44 v_main_~y~0_BEFORE_CALL_44))) (= (mod (+ (* v_main_~y~0_BEFORE_CALL_44 v_main_~y~0_BEFORE_CALL_44 v_main_~y~0_BEFORE_CALL_44 10) (* v_main_~y~0_BEFORE_CALL_44 v_main_~y~0_BEFORE_CALL_44 v_main_~y~0_BEFORE_CALL_44 v_main_~y~0_BEFORE_CALL_44 15) (* v_main_~y~0_BEFORE_CALL_44 v_main_~y~0_BEFORE_CALL_44 v_main_~y~0_BEFORE_CALL_44 v_main_~y~0_BEFORE_CALL_44 v_main_~y~0_BEFORE_CALL_44 6) (* 29 v_main_~y~0_BEFORE_CALL_44)) 30) 0)))) is different from true [2024-09-18 16:35:22,194 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-18 16:35:38,478 WARN L293 SmtUtils]: Spent 8.21s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-18 16:35:46,493 WARN L876 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((v_main_~y~0_BEFORE_CALL_44 Int) (v_main_~c~0_BEFORE_CALL_31 Int)) (or (= (+ (* v_main_~y~0_BEFORE_CALL_44 v_main_~c~0_BEFORE_CALL_31) (* 6 v_main_~c~0_BEFORE_CALL_31)) (+ (* v_main_~y~0_BEFORE_CALL_44 6) (* v_main_~y~0_BEFORE_CALL_44 v_main_~y~0_BEFORE_CALL_44))) (= (mod (+ (* v_main_~y~0_BEFORE_CALL_44 v_main_~y~0_BEFORE_CALL_44 v_main_~y~0_BEFORE_CALL_44 10) (* v_main_~y~0_BEFORE_CALL_44 v_main_~y~0_BEFORE_CALL_44 v_main_~y~0_BEFORE_CALL_44 v_main_~y~0_BEFORE_CALL_44 15) (* v_main_~y~0_BEFORE_CALL_44 v_main_~y~0_BEFORE_CALL_44 v_main_~y~0_BEFORE_CALL_44 v_main_~y~0_BEFORE_CALL_44 v_main_~y~0_BEFORE_CALL_44 6) (* 29 v_main_~y~0_BEFORE_CALL_44)) 30) 0))) (= c___VERIFIER_assert_~cond 0)) is different from true [2024-09-18 16:35:58,532 WARN L854 $PredicateComparison]: unable to prove that (or (= (+ (* 7 c_main_~c~0) (* c_main_~c~0 c_main_~y~0)) (+ (* 7 c_main_~y~0) (* c_main_~y~0 c_main_~y~0))) (not (= (mod (+ (* 15 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 29 c_main_~y~0) (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) 30) 0))) is different from false [2024-09-18 16:36:14,908 WARN L854 $PredicateComparison]: unable to prove that (or (= (+ (* 8 c_main_~y~0) (* c_main_~y~0 c_main_~y~0)) (+ (* c_main_~c~0 8) (* c_main_~c~0 c_main_~y~0))) (not (= (mod (+ (* 15 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 29 c_main_~y~0) (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) 30) 0))) is different from false [2024-09-18 16:36:30,950 WARN L854 $PredicateComparison]: unable to prove that (or (= (+ (* 9 c_main_~y~0) (* c_main_~y~0 c_main_~y~0)) (+ (* c_main_~c~0 c_main_~y~0) (* 9 c_main_~c~0))) (not (= (mod (+ (* 15 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 29 c_main_~y~0) (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) 30) 0))) is different from false [2024-09-18 16:36:39,009 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 30 proven. 51 refuted. 21 times theorem prover too weak. 194 trivial. 85 not checked. [2024-09-18 16:36:39,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:36:39,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429403408] [2024-09-18 16:36:39,009 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 16:36:39,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427176930] [2024-09-18 16:36:39,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427176930] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:36:39,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-18 16:36:39,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 32 [2024-09-18 16:36:39,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274881851] [2024-09-18 16:36:39,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-18 16:36:39,010 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-18 16:36:39,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:36:39,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-18 16:36:39,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=545, Unknown=6, NotChecked=318, Total=992 [2024-09-18 16:36:39,013 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 32 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 23 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-09-18 16:36:39,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:36:39,507 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2024-09-18 16:36:39,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-18 16:36:39,507 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 23 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) Word has length 95 [2024-09-18 16:36:39,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:36:39,508 INFO L225 Difference]: With dead ends: 61 [2024-09-18 16:36:39,508 INFO L226 Difference]: Without dead ends: 0 [2024-09-18 16:36:39,509 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 159 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=239, Invalid=1111, Unknown=6, NotChecked=450, Total=1806 [2024-09-18 16:36:39,509 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 3 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 295 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 16:36:39,509 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 604 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 449 Invalid, 0 Unknown, 295 Unchecked, 0.3s Time] [2024-09-18 16:36:39,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-18 16:36:39,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-18 16:36:39,510 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) [2024-09-18 16:36:39,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-18 16:36:39,510 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 95 [2024-09-18 16:36:39,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:36:39,510 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-18 16:36:39,511 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 23 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-09-18 16:36:39,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:36:39,511 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-18 16:36:39,511 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-18 16:36:39,513 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-18 16:36:39,525 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-18 16:36:39,713 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-18 16:36:39,716 INFO L408 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2024-09-18 16:36:39,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-18 16:36:40,122 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-18 16:36:40,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 04:36:40 BoogieIcfgContainer [2024-09-18 16:36:40,141 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-18 16:36:40,143 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-18 16:36:40,143 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-18 16:36:40,143 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-18 16:36:40,143 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 04:34:17" (3/4) ... [2024-09-18 16:36:40,144 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-18 16:36:40,183 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-18 16:36:40,183 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-18 16:36:40,184 INFO L158 Benchmark]: Toolchain (without parser) took 142959.38ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 100.8MB in the beginning and 69.9MB in the end (delta: 30.8MB). Peak memory consumption was 69.2MB. Max. memory is 16.1GB. [2024-09-18 16:36:40,184 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 117.4MB. Free memory is still 77.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-18 16:36:40,184 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.57ms. Allocated memory is still 169.9MB. Free memory was 100.5MB in the beginning and 88.9MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-18 16:36:40,184 INFO L158 Benchmark]: Boogie Procedure Inliner took 14.98ms. Allocated memory is still 169.9MB. Free memory was 88.9MB in the beginning and 88.0MB in the end (delta: 883.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-18 16:36:40,185 INFO L158 Benchmark]: Boogie Preprocessor took 28.05ms. Allocated memory is still 169.9MB. Free memory was 88.0MB in the beginning and 86.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 16:36:40,185 INFO L158 Benchmark]: RCFGBuilder took 265.50ms. Allocated memory is still 169.9MB. Free memory was 86.1MB in the beginning and 73.0MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-18 16:36:40,185 INFO L158 Benchmark]: TraceAbstraction took 142406.09ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 72.2MB in the beginning and 73.1MB in the end (delta: -864.1kB). Peak memory consumption was 35.6MB. Max. memory is 16.1GB. [2024-09-18 16:36:40,185 INFO L158 Benchmark]: Witness Printer took 40.88ms. Allocated memory is still 205.5MB. Free memory was 73.1MB in the beginning and 69.9MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-18 16:36:40,186 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 117.4MB. Free memory is still 77.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 198.57ms. Allocated memory is still 169.9MB. Free memory was 100.5MB in the beginning and 88.9MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 14.98ms. Allocated memory is still 169.9MB. Free memory was 88.9MB in the beginning and 88.0MB in the end (delta: 883.1kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.05ms. Allocated memory is still 169.9MB. Free memory was 88.0MB in the beginning and 86.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 265.50ms. Allocated memory is still 169.9MB. Free memory was 86.1MB in the beginning and 73.0MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 142406.09ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 72.2MB in the beginning and 73.1MB in the end (delta: -864.1kB). Peak memory consumption was 35.6MB. Max. memory is 16.1GB. * Witness Printer took 40.88ms. Allocated memory is still 205.5MB. Free memory was 73.1MB in the beginning and 69.9MB in the end (delta: 3.2MB). 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 141.9s, OverallIterations: 6, TraceHistogramMax: 12, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 1304 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 295 IncrementalHoareTripleChecker+Unchecked, 1142 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 794 IncrementalHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 162 mSDtfsCounter, 794 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 501 GetRequests, 401 SyntacticMatches, 8 SemanticMatches, 92 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 25.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=5, InterpolantAutomatonStates: 60, 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, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 138.9s InterpolantComputationTime, 507 NumberOfCodeBlocks, 507 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 476 ConstructedInterpolants, 3 QuantifiedInterpolants, 2357 SizeOfPredicates, 10 NumberOfNonLiveVariables, 632 ConjunctsInSsa, 116 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 666/1048 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: (((((k <= 256) && ((c + ((__int128) c * y)) == (y + ((__int128) y * y)))) && ((((__int128) 5 * c) + ((__int128) c * y)) == (((__int128) 5 * y) + ((__int128) y * y)))) && ((y + ((__int128) 30 * x)) == (((((((__int128) y * y) * y) * y) * 15) + (6 * (((((__int128) y * y) * y) * y) * y))) + ((((__int128) y * y) * y) * 10)))) && ((c < k) || (((__int128) y * y) == ((__int128) k * y)))) - ProcedureContractResult [Line: 6]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - 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! [2024-09-18 16:36:40,216 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