./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound100.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/ps6-ll_valuebound100.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 b8588da8d66d82eb7aa3eaf3ef7c4d24b2b275bf9c1acdf38a110c8bc6eba3b7 --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 [2024-09-17 19:14:55,636 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-17 19:14:55,703 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-17 19:14:55,708 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-17 19:14:55,708 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-17 19:14:55,731 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-17 19:14:55,733 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-17 19:14:55,733 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-17 19:14:55,734 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-17 19:14:55,737 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-17 19:14:55,737 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-17 19:14:55,738 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-17 19:14:55,738 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-17 19:14:55,738 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-17 19:14:55,739 INFO L153 SettingsManager]: * Use SBE=true [2024-09-17 19:14:55,739 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-17 19:14:55,739 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-17 19:14:55,740 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-17 19:14:55,740 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-17 19:14:55,740 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-17 19:14:55,740 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-17 19:14:55,742 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-17 19:14:55,743 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-17 19:14:55,743 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-17 19:14:55,743 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-17 19:14:55,743 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-17 19:14:55,744 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-17 19:14:55,744 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-17 19:14:55,744 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-17 19:14:55,744 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-17 19:14:55,745 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-17 19:14:55,745 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-17 19:14:55,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:14:55,745 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-17 19:14:55,746 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-17 19:14:55,746 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-17 19:14:55,746 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-17 19:14:55,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-17 19:14:55,748 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-17 19:14:55,748 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-17 19:14:55,748 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-17 19:14:55,748 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-17 19:14:55,749 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8588da8d66d82eb7aa3eaf3ef7c4d24b2b275bf9c1acdf38a110c8bc6eba3b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-17 19:14:56,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-17 19:14:56,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-17 19:14:56,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-17 19:14:56,025 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-17 19:14:56,026 INFO L274 PluginConnector]: CDTParser initialized [2024-09-17 19:14:56,027 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound100.c [2024-09-17 19:14:57,380 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-17 19:14:57,562 INFO L384 CDTParser]: Found 1 translation units. [2024-09-17 19:14:57,563 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound100.c [2024-09-17 19:14:57,569 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/73963cb43/9fe64c8f96b84a649284487bcd5fed5e/FLAGde74add1a [2024-09-17 19:14:57,586 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/73963cb43/9fe64c8f96b84a649284487bcd5fed5e [2024-09-17 19:14:57,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-17 19:14:57,590 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-17 19:14:57,592 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-17 19:14:57,592 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-17 19:14:57,596 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-17 19:14:57,596 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:14:57" (1/1) ... [2024-09-17 19:14:57,597 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23212f9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:57, skipping insertion in model container [2024-09-17 19:14:57,597 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:14:57" (1/1) ... [2024-09-17 19:14:57,613 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-17 19:14:57,782 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound100.c[458,471] [2024-09-17 19:14:57,819 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:14:57,828 INFO L200 MainTranslator]: Completed pre-run [2024-09-17 19:14:57,839 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound100.c[458,471] [2024-09-17 19:14:57,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:14:57,858 INFO L204 MainTranslator]: Completed translation [2024-09-17 19:14:57,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:57 WrapperNode [2024-09-17 19:14:57,859 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-17 19:14:57,860 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-17 19:14:57,860 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-17 19:14:57,860 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-17 19:14:57,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:57" (1/1) ... [2024-09-17 19:14:57,871 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:57" (1/1) ... [2024-09-17 19:14:57,877 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-17 19:14:57,877 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-17 19:14:57,878 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-17 19:14:57,878 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-17 19:14:57,878 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-17 19:14:57,887 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:57" (1/1) ... [2024-09-17 19:14:57,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:57" (1/1) ... [2024-09-17 19:14:57,893 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:57" (1/1) ... [2024-09-17 19:14:57,904 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]. [2024-09-17 19:14:57,906 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:57" (1/1) ... [2024-09-17 19:14:57,906 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:57" (1/1) ... [2024-09-17 19:14:57,908 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:57" (1/1) ... [2024-09-17 19:14:57,912 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:57" (1/1) ... [2024-09-17 19:14:57,913 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:57" (1/1) ... [2024-09-17 19:14:57,914 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:57" (1/1) ... [2024-09-17 19:14:57,916 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-17 19:14:57,918 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-17 19:14:57,918 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-17 19:14:57,918 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-17 19:14:57,921 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:57" (1/1) ... [2024-09-17 19:14:57,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:14:57,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:14:57,961 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) [2024-09-17 19:14:57,963 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 [2024-09-17 19:14:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-17 19:14:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-17 19:14:58,007 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-17 19:14:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-17 19:14:58,007 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-17 19:14:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-17 19:14:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-17 19:14:58,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-17 19:14:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-17 19:14:58,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-17 19:14:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-17 19:14:58,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-17 19:14:58,056 INFO L242 CfgBuilder]: Building ICFG [2024-09-17 19:14:58,058 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-17 19:14:58,174 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-17 19:14:58,174 INFO L291 CfgBuilder]: Performing block encoding [2024-09-17 19:14:58,193 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-17 19:14:58,194 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-17 19:14:58,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:14:58 BoogieIcfgContainer [2024-09-17 19:14:58,194 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-17 19:14:58,196 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-17 19:14:58,196 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-17 19:14:58,199 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-17 19:14:58,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 07:14:57" (1/3) ... [2024-09-17 19:14:58,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31890a96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 07:14:58, skipping insertion in model container [2024-09-17 19:14:58,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:14:57" (2/3) ... [2024-09-17 19:14:58,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31890a96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 07:14:58, skipping insertion in model container [2024-09-17 19:14:58,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:14:58" (3/3) ... [2024-09-17 19:14:58,202 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound100.c [2024-09-17 19:14:58,218 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-17 19:14:58,219 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-17 19:14:58,275 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-17 19:14:58,283 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;@f026ebb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-17 19:14:58,283 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-17 19:14:58,288 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) [2024-09-17 19:14:58,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-17 19:14:58,302 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:14:58,303 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:14:58,303 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:14:58,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:14:58,312 INFO L85 PathProgramCache]: Analyzing trace with hash -620791457, now seen corresponding path program 1 times [2024-09-17 19:14:58,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:14:58,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013353938] [2024-09-17 19:14:58,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:14:58,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:14:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:14:58,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:14:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:14:58,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:14:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:14:58,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:14:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:14:58,507 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 19:14:58,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:14:58,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013353938] [2024-09-17 19:14:58,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013353938] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:14:58,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:14:58,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-17 19:14:58,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179638196] [2024-09-17 19:14:58,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:14:58,525 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-17 19:14:58,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:14:58,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-17 19:14:58,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 19:14:58,567 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) [2024-09-17 19:14:58,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:14:58,595 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2024-09-17 19:14:58,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-17 19:14:58,598 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 [2024-09-17 19:14:58,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:14:58,604 INFO L225 Difference]: With dead ends: 48 [2024-09-17 19:14:58,605 INFO L226 Difference]: Without dead ends: 23 [2024-09-17 19:14:58,608 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 [2024-09-17 19:14:58,613 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 [2024-09-17 19:14:58,614 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] [2024-09-17 19:14:58,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-17 19:14:58,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-17 19:14:58,648 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) [2024-09-17 19:14:58,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-09-17 19:14:58,652 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 21 [2024-09-17 19:14:58,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:14:58,653 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-09-17 19:14:58,653 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) [2024-09-17 19:14:58,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:14:58,654 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-09-17 19:14:58,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-17 19:14:58,656 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:14:58,657 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:14:58,657 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-17 19:14:58,657 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:14:58,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:14:58,658 INFO L85 PathProgramCache]: Analyzing trace with hash -959298087, now seen corresponding path program 1 times [2024-09-17 19:14:58,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:14:58,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434095090] [2024-09-17 19:14:58,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:14:58,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:14:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:14:58,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [96119842] [2024-09-17 19:14:58,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:14:58,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:14:58,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:14:58,714 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) [2024-09-17 19:14:58,716 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-17 19:14:58,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:14:58,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-17 19:14:58,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:14:58,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 19:14:58,904 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 19:14:58,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:14:58,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434095090] [2024-09-17 19:14:58,905 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:14:58,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96119842] [2024-09-17 19:14:58,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96119842] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:14:58,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:14:58,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 19:14:58,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590823522] [2024-09-17 19:14:58,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:14:58,907 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 19:14:58,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:14:58,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 19:14:58,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 19:14:58,909 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) [2024-09-17 19:14:58,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:14:58,972 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-09-17 19:14:58,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 19:14:58,973 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 [2024-09-17 19:14:58,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:14:58,974 INFO L225 Difference]: With dead ends: 34 [2024-09-17 19:14:58,974 INFO L226 Difference]: Without dead ends: 30 [2024-09-17 19:14:58,975 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 [2024-09-17 19:14:58,976 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 [2024-09-17 19:14:58,976 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] [2024-09-17 19:14:58,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-17 19:14:58,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-17 19:14:58,989 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) [2024-09-17 19:14:58,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-09-17 19:14:58,991 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2024-09-17 19:14:58,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:14:58,991 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-09-17 19:14:58,991 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) [2024-09-17 19:14:58,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:14:58,992 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-09-17 19:14:58,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-17 19:14:58,993 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:14:58,993 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] [2024-09-17 19:14:59,010 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-17 19:14:59,197 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 [2024-09-17 19:14:59,198 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:14:59,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:14:59,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1544704875, now seen corresponding path program 1 times [2024-09-17 19:14:59,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:14:59,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525269442] [2024-09-17 19:14:59,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:14:59,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:14:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:14:59,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1671823616] [2024-09-17 19:14:59,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:14:59,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:14:59,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:14:59,243 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) [2024-09-17 19:14:59,244 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-17 19:14:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:14:59,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-17 19:14:59,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:14:59,378 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 19:14:59,379 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:14:59,503 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-17 19:14:59,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:14:59,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525269442] [2024-09-17 19:14:59,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:14:59,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671823616] [2024-09-17 19:14:59,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671823616] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-17 19:14:59,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-17 19:14:59,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-17 19:14:59,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530186282] [2024-09-17 19:14:59,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:14:59,506 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 19:14:59,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:14:59,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 19:14:59,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-17 19:14:59,508 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) [2024-09-17 19:14:59,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:14:59,575 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2024-09-17 19:14:59,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 19:14:59,576 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 [2024-09-17 19:14:59,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:14:59,577 INFO L225 Difference]: With dead ends: 36 [2024-09-17 19:14:59,577 INFO L226 Difference]: Without dead ends: 32 [2024-09-17 19:14:59,577 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-17 19:14:59,578 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 [2024-09-17 19:14:59,579 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] [2024-09-17 19:14:59,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-17 19:14:59,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-17 19:14:59,598 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) [2024-09-17 19:14:59,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2024-09-17 19:14:59,599 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 28 [2024-09-17 19:14:59,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:14:59,600 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2024-09-17 19:14:59,600 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) [2024-09-17 19:14:59,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:14:59,603 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2024-09-17 19:14:59,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-17 19:14:59,604 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:14:59,604 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] [2024-09-17 19:14:59,622 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-17 19:14:59,804 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 [2024-09-17 19:14:59,805 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:14:59,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:14:59,805 INFO L85 PathProgramCache]: Analyzing trace with hash 21814286, now seen corresponding path program 1 times [2024-09-17 19:14:59,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:14:59,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836336327] [2024-09-17 19:14:59,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:14:59,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:14:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:14:59,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403530741] [2024-09-17 19:14:59,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:14:59,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:14:59,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:14:59,848 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) [2024-09-17 19:14:59,851 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-17 19:14:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:14:59,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-17 19:14:59,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:15:00,104 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-17 19:15:00,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:15:00,621 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-17 19:15:00,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:15:00,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836336327] [2024-09-17 19:15:00,622 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:15:00,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403530741] [2024-09-17 19:15:00,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403530741] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:15:00,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 19:15:00,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2024-09-17 19:15:00,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010711002] [2024-09-17 19:15:00,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 19:15:00,623 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-17 19:15:00,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:15:00,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-17 19:15:00,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-09-17 19:15:00,626 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 15 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-17 19:15:00,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:15:00,954 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2024-09-17 19:15:00,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-17 19:15:00,955 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 39 [2024-09-17 19:15:00,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:15:00,956 INFO L225 Difference]: With dead ends: 53 [2024-09-17 19:15:00,956 INFO L226 Difference]: Without dead ends: 45 [2024-09-17 19:15:00,957 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-09-17 19:15:00,958 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 19:15:00,958 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 178 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 19:15:00,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-17 19:15:00,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-09-17 19:15:00,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 11 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-17 19:15:00,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2024-09-17 19:15:00,979 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 39 [2024-09-17 19:15:00,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:15:00,979 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2024-09-17 19:15:00,980 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-17 19:15:00,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:15:00,980 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2024-09-17 19:15:00,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-17 19:15:00,982 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:15:00,983 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] [2024-09-17 19:15:00,999 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-17 19:15:01,186 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 [2024-09-17 19:15:01,187 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:15:01,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:15:01,188 INFO L85 PathProgramCache]: Analyzing trace with hash -244405920, now seen corresponding path program 2 times [2024-09-17 19:15:01,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:15:01,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403586503] [2024-09-17 19:15:01,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:15:01,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:15:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:15:01,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [61689059] [2024-09-17 19:15:01,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 19:15:01,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:15:01,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:15:01,245 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) [2024-09-17 19:15:01,247 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-17 19:15:01,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 19:15:01,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:15:01,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-17 19:15:01,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:15:01,660 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 31 proven. 38 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-09-17 19:15:01,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:16:20,921 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 31 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-09-17 19:16:20,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:16:20,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403586503] [2024-09-17 19:16:20,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:16:20,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61689059] [2024-09-17 19:16:20,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61689059] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:16:20,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 19:16:20,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 27 [2024-09-17 19:16:20,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879589628] [2024-09-17 19:16:20,922 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 19:16:20,922 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-17 19:16:20,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:16:20,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-17 19:16:20,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=593, Unknown=4, NotChecked=0, Total=702 [2024-09-17 19:16:20,927 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 27 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 21 states have internal predecessors, (43), 15 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) [2024-09-17 19:16:25,348 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (* c_main_~y~0 c_main_~y~0))) (let ((.cse0 (not (= (+ (* 5 (* c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) (* (* c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) 2) (* 6 (* c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0))) (+ (* 12 c_main_~x~0) .cse2)))) (.cse3 (not (= (mod (+ (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 7 c_main_~y~0 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) .cse2) 12) 0))) (.cse1 (* c_main_~y~0 c_main_~k~0))) (and (<= c_main_~k~0 256) (or .cse0 (= (+ .cse1 c_main_~k~0) (+ (* 2 c_main_~y~0) .cse2 1)) (not (= (+ c_main_~c~0 1) c_main_~k~0))) (or (not (= (+ 3 c_main_~c~0) c_main_~k~0)) .cse3 (= (+ .cse1 (* 3 c_main_~k~0)) (+ (* 6 c_main_~y~0) 9 .cse2))) (or .cse0 (< c_main_~c~0 c_main_~k~0) (= .cse1 .cse2)) (or (not (= (+ 2 c_main_~c~0) c_main_~k~0)) .cse3 (= (+ .cse1 (* 2 c_main_~k~0)) (+ (* 4 c_main_~y~0) 4 .cse2)))))) is different from false [2024-09-17 19:16:29,368 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (* c_main_~y~0 c_main_~y~0))) (let ((.cse0 (not (= (+ (* 5 (* c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) (* (* c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) 2) (* 6 (* c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0))) (+ (* 12 c_main_~x~0) .cse2)))) (.cse3 (not (= (mod (+ (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 7 c_main_~y~0 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) .cse2) 12) 0))) (.cse1 (* c_main_~y~0 c_main_~k~0))) (and (or .cse0 (= (+ .cse1 c_main_~k~0) (+ (* 2 c_main_~y~0) .cse2 1)) (not (= (+ c_main_~c~0 1) c_main_~k~0))) (or (not (= (+ 3 c_main_~c~0) c_main_~k~0)) .cse3 (= (+ .cse1 (* 3 c_main_~k~0)) (+ (* 6 c_main_~y~0) 9 .cse2))) (or .cse0 (< c_main_~c~0 c_main_~k~0) (= .cse1 .cse2)) (or (not (= (+ 2 c_main_~c~0) c_main_~k~0)) .cse3 (= (+ .cse1 (* 2 c_main_~k~0)) (+ (* 4 c_main_~y~0) 4 .cse2)))))) is different from false [2024-09-17 19:16:41,484 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 65 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-17 19:16:45,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:16:45,651 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2024-09-17 19:16:45,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-17 19:16:45,652 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 21 states have internal predecessors, (43), 15 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) Word has length 60 [2024-09-17 19:16:45,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:16:45,653 INFO L225 Difference]: With dead ends: 74 [2024-09-17 19:16:45,654 INFO L226 Difference]: Without dead ends: 66 [2024-09-17 19:16:45,657 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 71.3s TimeCoverageRelationStatistics Valid=209, Invalid=1125, Unknown=6, NotChecked=142, Total=1482 [2024-09-17 19:16:45,659 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 5 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-17 19:16:45,660 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 305 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 325 Invalid, 0 Unknown, 70 Unchecked, 0.3s Time] [2024-09-17 19:16:45,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-17 19:16:45,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2024-09-17 19:16:45,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 41 states have (on average 1.024390243902439) internal successors, (42), 41 states have internal predecessors, (42), 16 states have call successors, (16), 8 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-17 19:16:45,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2024-09-17 19:16:45,693 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 60 [2024-09-17 19:16:45,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:16:45,697 INFO L474 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2024-09-17 19:16:45,697 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 21 states have internal predecessors, (43), 15 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) [2024-09-17 19:16:45,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:16:45,698 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2024-09-17 19:16:45,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-09-17 19:16:45,700 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:16:45,700 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] [2024-09-17 19:16:45,720 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-17 19:16:45,901 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 [2024-09-17 19:16:45,901 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:16:45,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:16:45,902 INFO L85 PathProgramCache]: Analyzing trace with hash -235169010, now seen corresponding path program 3 times [2024-09-17 19:16:45,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:16:45,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810743159] [2024-09-17 19:16:45,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:16:45,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:16:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:16:45,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [923267231] [2024-09-17 19:16:45,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-17 19:16:45,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:16:45,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:16:45,983 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) [2024-09-17 19:16:45,984 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-17 19:16:46,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-17 19:16:46,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:16:46,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-17 19:16:46,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:16:46,385 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 45 proven. 142 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-09-17 19:16:46,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:16:54,516 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 c_main_~y~0))) (or (= (+ c_main_~y~0 .cse0) (+ c_main_~c~0 (* c_main_~c~0 c_main_~y~0))) (not (= (mod (+ (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 7 c_main_~y~0 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) .cse0) 12) 0)))) is different from false [2024-09-17 19:17:02,552 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) [2024-09-17 19:17:14,573 WARN L293 SmtUtils]: Spent 8.02s 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) [2024-09-17 19:17:26,590 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-17 19:17:34,610 WARN L876 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((v_main_~c~0_BEFORE_CALL_26 Int) (v_main_~y~0_BEFORE_CALL_39 Int)) (let ((.cse0 (* v_main_~y~0_BEFORE_CALL_39 v_main_~y~0_BEFORE_CALL_39))) (or (= (+ (* v_main_~y~0_BEFORE_CALL_39 v_main_~c~0_BEFORE_CALL_26) v_main_~c~0_BEFORE_CALL_26) (+ v_main_~y~0_BEFORE_CALL_39 .cse0)) (= (mod (+ (* v_main_~y~0_BEFORE_CALL_39 v_main_~y~0_BEFORE_CALL_39 v_main_~y~0_BEFORE_CALL_39 v_main_~y~0_BEFORE_CALL_39 v_main_~y~0_BEFORE_CALL_39 6) (* v_main_~y~0_BEFORE_CALL_39 v_main_~y~0_BEFORE_CALL_39 v_main_~y~0_BEFORE_CALL_39 v_main_~y~0_BEFORE_CALL_39 v_main_~y~0_BEFORE_CALL_39 v_main_~y~0_BEFORE_CALL_39 10) (* 7 v_main_~y~0_BEFORE_CALL_39 v_main_~y~0_BEFORE_CALL_39 v_main_~y~0_BEFORE_CALL_39 v_main_~y~0_BEFORE_CALL_39) .cse0) 12) 0))))) is different from true [2024-09-17 19:17:46,653 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-17 19:18:02,684 WARN L293 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-17 19:18:10,724 WARN L876 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((v_main_~c~0_BEFORE_CALL_26 Int) (v_main_~y~0_BEFORE_CALL_39 Int)) (let ((.cse0 (* v_main_~y~0_BEFORE_CALL_39 v_main_~y~0_BEFORE_CALL_39))) (or (= (+ (* v_main_~y~0_BEFORE_CALL_39 v_main_~c~0_BEFORE_CALL_26) v_main_~c~0_BEFORE_CALL_26) (+ v_main_~y~0_BEFORE_CALL_39 .cse0)) (= (mod (+ (* v_main_~y~0_BEFORE_CALL_39 v_main_~y~0_BEFORE_CALL_39 v_main_~y~0_BEFORE_CALL_39 v_main_~y~0_BEFORE_CALL_39 v_main_~y~0_BEFORE_CALL_39 6) (* v_main_~y~0_BEFORE_CALL_39 v_main_~y~0_BEFORE_CALL_39 v_main_~y~0_BEFORE_CALL_39 v_main_~y~0_BEFORE_CALL_39 v_main_~y~0_BEFORE_CALL_39 v_main_~y~0_BEFORE_CALL_39 10) (* 7 v_main_~y~0_BEFORE_CALL_39 v_main_~y~0_BEFORE_CALL_39 v_main_~y~0_BEFORE_CALL_39 v_main_~y~0_BEFORE_CALL_39) .cse0) 12) 0)))) (= c___VERIFIER_assert_~cond 0)) is different from true [2024-09-17 19:18:22,779 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 c_main_~y~0))) (or (= (+ (* 2 c_main_~y~0) .cse0) (+ (* 2 c_main_~c~0) (* c_main_~c~0 c_main_~y~0))) (not (= (mod (+ (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 7 c_main_~y~0 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) .cse0) 12) 0)))) is different from false [2024-09-17 19:18:38,857 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 c_main_~y~0))) (or (= (+ (* 3 c_main_~c~0) (* c_main_~c~0 c_main_~y~0)) (+ (* 3 c_main_~y~0) .cse0)) (not (= (mod (+ (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 7 c_main_~y~0 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) .cse0) 12) 0)))) is different from false [2024-09-17 19:18:54,908 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 c_main_~y~0))) (or (not (= (mod (+ (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 7 c_main_~y~0 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) .cse0) 12) 0)) (= (+ (* c_main_~c~0 4) (* c_main_~c~0 c_main_~y~0)) (+ (* 4 c_main_~y~0) .cse0)))) is different from false [2024-09-17 19:19:10,976 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 c_main_~y~0))) (or (not (= (mod (+ (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 7 c_main_~y~0 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) .cse0) 12) 0)) (= (+ (* 5 c_main_~y~0) .cse0) (+ (* 5 c_main_~c~0) (* c_main_~c~0 c_main_~y~0))))) is different from false [2024-09-17 19:19:27,124 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 c_main_~y~0))) (or (= (+ (* 6 c_main_~y~0) .cse0) (+ (* 6 c_main_~c~0) (* c_main_~c~0 c_main_~y~0))) (not (= (mod (+ (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 7 c_main_~y~0 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) .cse0) 12) 0)))) is different from false