./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.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 f1d7dc9d 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/hard2_valuebound50.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 63cd3e528fa28694be9f2ecbe948122395c3f48db5408253e949dc50f2a74038 --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-f1d7dc9-m [2024-09-20 12:50:17,190 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 12:50:17,246 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 12:50:17,253 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 12:50:17,253 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 12:50:17,285 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 12:50:17,286 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 12:50:17,286 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 12:50:17,286 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 12:50:17,287 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 12:50:17,287 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 12:50:17,288 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 12:50:17,288 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 12:50:17,289 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 12:50:17,289 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 12:50:17,289 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 12:50:17,290 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 12:50:17,290 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 12:50:17,290 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 12:50:17,291 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 12:50:17,291 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 12:50:17,292 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 12:50:17,292 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 12:50:17,292 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 12:50:17,293 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 12:50:17,293 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 12:50:17,293 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 12:50:17,294 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 12:50:17,294 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 12:50:17,294 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 12:50:17,295 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 12:50:17,295 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 12:50:17,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 12:50:17,296 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 12:50:17,296 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 12:50:17,296 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 12:50:17,297 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 12:50:17,297 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 12:50:17,297 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 12:50:17,298 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 12:50:17,298 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 12:50:17,298 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 12:50:17,298 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63cd3e528fa28694be9f2ecbe948122395c3f48db5408253e949dc50f2a74038 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 12:50:17,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 12:50:17,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 12:50:17,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 12:50:17,537 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 12:50:17,538 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 12:50:17,539 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.c [2024-09-20 12:50:18,951 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 12:50:19,130 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 12:50:19,131 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.c [2024-09-20 12:50:19,140 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/6a77b74b8/a9d4afe5e95546428e5b4c71a01d2587/FLAG92b5048c9 [2024-09-20 12:50:19,518 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/6a77b74b8/a9d4afe5e95546428e5b4c71a01d2587 [2024-09-20 12:50:19,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 12:50:19,521 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 12:50:19,523 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 12:50:19,523 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 12:50:19,527 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 12:50:19,527 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:50:19" (1/1) ... [2024-09-20 12:50:19,528 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47bfed3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:50:19, skipping insertion in model container [2024-09-20 12:50:19,528 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:50:19" (1/1) ... [2024-09-20 12:50:19,544 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 12:50:19,693 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/hard2_valuebound50.c[526,539] [2024-09-20 12:50:19,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 12:50:19,730 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 12:50:19,744 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/hard2_valuebound50.c[526,539] [2024-09-20 12:50:19,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 12:50:19,767 INFO L204 MainTranslator]: Completed translation [2024-09-20 12:50:19,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:50:19 WrapperNode [2024-09-20 12:50:19,768 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 12:50:19,769 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 12:50:19,769 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 12:50:19,769 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 12:50:19,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:50:19" (1/1) ... [2024-09-20 12:50:19,782 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:50:19" (1/1) ... [2024-09-20 12:50:19,787 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 12:50:19,787 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 12:50:19,788 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 12:50:19,788 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 12:50:19,788 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 12:50:19,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:50:19" (1/1) ... [2024-09-20 12:50:19,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:50:19" (1/1) ... [2024-09-20 12:50:19,798 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:50:19" (1/1) ... [2024-09-20 12:50:19,809 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-09-20 12:50:19,809 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:50:19" (1/1) ... [2024-09-20 12:50:19,809 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:50:19" (1/1) ... [2024-09-20 12:50:19,813 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:50:19" (1/1) ... [2024-09-20 12:50:19,816 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:50:19" (1/1) ... [2024-09-20 12:50:19,817 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:50:19" (1/1) ... [2024-09-20 12:50:19,817 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:50:19" (1/1) ... [2024-09-20 12:50:19,819 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 12:50:19,820 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 12:50:19,820 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 12:50:19,820 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 12:50:19,825 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:50:19" (1/1) ... [2024-09-20 12:50:19,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 12:50:19,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:50:19,852 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) [2024-09-20 12:50:19,857 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 [2024-09-20 12:50:19,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 12:50:19,894 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-20 12:50:19,895 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-20 12:50:19,895 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 12:50:19,895 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 12:50:19,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 12:50:19,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-20 12:50:19,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 12:50:19,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 12:50:19,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 12:50:19,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 12:50:19,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 12:50:19,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 12:50:19,953 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 12:50:19,955 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 12:50:20,110 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-20 12:50:20,110 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 12:50:20,132 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 12:50:20,132 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-20 12:50:20,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:50:20 BoogieIcfgContainer [2024-09-20 12:50:20,133 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 12:50:20,135 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 12:50:20,135 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 12:50:20,138 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 12:50:20,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 12:50:19" (1/3) ... [2024-09-20 12:50:20,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4643de08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:50:20, skipping insertion in model container [2024-09-20 12:50:20,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:50:19" (2/3) ... [2024-09-20 12:50:20,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4643de08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:50:20, skipping insertion in model container [2024-09-20 12:50:20,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:50:20" (3/3) ... [2024-09-20 12:50:20,141 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound50.c [2024-09-20 12:50:20,156 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 12:50:20,156 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 12:50:20,199 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 12:50:20,205 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;@aed2a5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 12:50:20,205 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 12:50:20,208 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-20 12:50:20,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-20 12:50:20,214 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:50:20,214 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:50:20,215 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:50:20,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:20,219 INFO L85 PathProgramCache]: Analyzing trace with hash -909137831, now seen corresponding path program 1 times [2024-09-20 12:50:20,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:50:20,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693075983] [2024-09-20 12:50:20,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:50:20,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:50:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:20,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:50:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:20,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 12:50:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:20,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 12:50:20,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:50:20,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693075983] [2024-09-20 12:50:20,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693075983] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:50:20,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 12:50:20,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 12:50:20,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883874107] [2024-09-20 12:50:20,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:50:20,427 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-20 12:50:20,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:50:20,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-20 12:50:20,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 12:50:20,448 INFO L87 Difference]: Start difference. First operand has 33 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 12:50:20,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:50:20,473 INFO L93 Difference]: Finished difference Result 58 states and 92 transitions. [2024-09-20 12:50:20,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-20 12:50:20,475 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-20 12:50:20,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:50:20,480 INFO L225 Difference]: With dead ends: 58 [2024-09-20 12:50:20,481 INFO L226 Difference]: Without dead ends: 29 [2024-09-20 12:50:20,483 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 12:50:20,486 INFO L434 NwaCegarLoop]: 39 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, 39 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 [2024-09-20 12:50:20,487 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:50:20,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-20 12:50:20,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-09-20 12:50:20,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 12:50:20,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2024-09-20 12:50:20,518 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 16 [2024-09-20 12:50:20,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:50:20,519 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2024-09-20 12:50:20,519 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 12:50:20,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:20,520 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2024-09-20 12:50:20,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-20 12:50:20,521 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:50:20,521 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:50:20,521 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 12:50:20,522 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:50:20,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:20,522 INFO L85 PathProgramCache]: Analyzing trace with hash -229079461, now seen corresponding path program 1 times [2024-09-20 12:50:20,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:50:20,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175178432] [2024-09-20 12:50:20,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:50:20,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:50:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:20,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:50:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:20,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 12:50:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:20,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 12:50:20,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:50:20,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175178432] [2024-09-20 12:50:20,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175178432] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:50:20,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 12:50:20,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 12:50:20,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509446398] [2024-09-20 12:50:20,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:50:20,718 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 12:50:20,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:50:20,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 12:50:20,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 12:50:20,719 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 12:50:20,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:50:20,778 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2024-09-20 12:50:20,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 12:50:20,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-20 12:50:20,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:50:20,779 INFO L225 Difference]: With dead ends: 42 [2024-09-20 12:50:20,780 INFO L226 Difference]: Without dead ends: 40 [2024-09-20 12:50:20,780 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 12:50:20,781 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:50:20,781 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 114 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:50:20,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-20 12:50:20,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2024-09-20 12:50:20,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 12:50:20,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2024-09-20 12:50:20,792 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 16 [2024-09-20 12:50:20,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:50:20,792 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2024-09-20 12:50:20,792 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 12:50:20,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:20,793 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2024-09-20 12:50:20,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-20 12:50:20,794 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:50:20,794 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:50:20,794 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-20 12:50:20,794 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:50:20,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:20,795 INFO L85 PathProgramCache]: Analyzing trace with hash 520476838, now seen corresponding path program 1 times [2024-09-20 12:50:20,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:50:20,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757119023] [2024-09-20 12:50:20,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:50:20,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:50:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:20,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:50:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:20,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 12:50:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:20,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-20 12:50:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:20,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 12:50:20,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:50:20,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757119023] [2024-09-20 12:50:20,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757119023] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:50:20,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 12:50:20,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 12:50:20,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762494890] [2024-09-20 12:50:20,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:50:20,947 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 12:50:20,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:50:20,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 12:50:20,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 12:50:20,948 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-20 12:50:21,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:50:21,017 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2024-09-20 12:50:21,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 12:50:21,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-20 12:50:21,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:50:21,018 INFO L225 Difference]: With dead ends: 46 [2024-09-20 12:50:21,020 INFO L226 Difference]: Without dead ends: 44 [2024-09-20 12:50:21,021 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 12:50:21,022 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:50:21,024 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 111 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:50:21,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-20 12:50:21,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2024-09-20 12:50:21,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 12:50:21,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-09-20 12:50:21,036 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 21 [2024-09-20 12:50:21,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:50:21,037 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-09-20 12:50:21,037 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-20 12:50:21,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:21,039 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-09-20 12:50:21,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-20 12:50:21,043 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:50:21,044 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:50:21,044 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-20 12:50:21,044 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:50:21,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:21,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1140086011, now seen corresponding path program 1 times [2024-09-20 12:50:21,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:50:21,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460323095] [2024-09-20 12:50:21,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:50:21,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:50:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 12:50:21,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [884802785] [2024-09-20 12:50:21,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:50:21,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:50:21,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:50:21,077 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) [2024-09-20 12:50:21,078 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 12:50:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:21,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-20 12:50:21,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:50:21,252 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 12:50:21,253 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 12:50:21,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:50:21,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460323095] [2024-09-20 12:50:21,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 12:50:21,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884802785] [2024-09-20 12:50:21,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884802785] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:50:21,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 12:50:21,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 12:50:21,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140651082] [2024-09-20 12:50:21,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:50:21,260 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 12:50:21,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:50:21,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 12:50:21,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 12:50:21,261 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-09-20 12:50:21,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:50:21,345 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2024-09-20 12:50:21,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 12:50:21,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 26 [2024-09-20 12:50:21,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:50:21,349 INFO L225 Difference]: With dead ends: 63 [2024-09-20 12:50:21,349 INFO L226 Difference]: Without dead ends: 50 [2024-09-20 12:50:21,349 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 12:50:21,350 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:50:21,352 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 113 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:50:21,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-20 12:50:21,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-09-20 12:50:21,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 29 states have internal predecessors, (33), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-20 12:50:21,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2024-09-20 12:50:21,371 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 26 [2024-09-20 12:50:21,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:50:21,371 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2024-09-20 12:50:21,371 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-09-20 12:50:21,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:21,373 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2024-09-20 12:50:21,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-20 12:50:21,375 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:50:21,375 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:50:21,393 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-20 12:50:21,576 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:50:21,576 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:50:21,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:21,577 INFO L85 PathProgramCache]: Analyzing trace with hash -975701997, now seen corresponding path program 1 times [2024-09-20 12:50:21,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:50:21,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845562010] [2024-09-20 12:50:21,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:50:21,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:50:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 12:50:21,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1011659235] [2024-09-20 12:50:21,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:50:21,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:50:21,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:50:21,593 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) [2024-09-20 12:50:21,600 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 12:50:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:21,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-20 12:50:21,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:50:21,708 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 12:50:21,708 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 12:50:21,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:50:21,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845562010] [2024-09-20 12:50:21,709 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 12:50:21,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011659235] [2024-09-20 12:50:21,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011659235] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:50:21,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 12:50:21,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 12:50:21,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876110308] [2024-09-20 12:50:21,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:50:21,710 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 12:50:21,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:50:21,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 12:50:21,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 12:50:21,711 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-20 12:50:21,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:50:21,771 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2024-09-20 12:50:21,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 12:50:21,771 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-09-20 12:50:21,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:50:21,773 INFO L225 Difference]: With dead ends: 63 [2024-09-20 12:50:21,773 INFO L226 Difference]: Without dead ends: 61 [2024-09-20 12:50:21,773 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 12:50:21,774 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:50:21,775 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 95 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:50:21,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-20 12:50:21,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2024-09-20 12:50:21,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 36 states have internal predecessors, (41), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 12:50:21,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2024-09-20 12:50:21,788 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 33 [2024-09-20 12:50:21,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:50:21,789 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2024-09-20 12:50:21,789 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-20 12:50:21,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:21,790 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2024-09-20 12:50:21,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-20 12:50:21,791 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:50:21,791 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:50:21,808 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-20 12:50:21,995 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:50:21,996 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:50:21,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:21,996 INFO L85 PathProgramCache]: Analyzing trace with hash -928833564, now seen corresponding path program 1 times [2024-09-20 12:50:21,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:50:21,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888604069] [2024-09-20 12:50:21,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:50:21,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:50:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 12:50:22,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904134270] [2024-09-20 12:50:22,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:50:22,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:50:22,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:50:22,031 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) [2024-09-20 12:50:22,033 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 12:50:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:22,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-20 12:50:22,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:50:22,250 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-20 12:50:22,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:50:22,355 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-09-20 12:50:22,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:50:22,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888604069] [2024-09-20 12:50:22,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 12:50:22,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904134270] [2024-09-20 12:50:22,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904134270] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-20 12:50:22,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-20 12:50:22,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-20 12:50:22,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726752087] [2024-09-20 12:50:22,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:50:22,356 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 12:50:22,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:50:22,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 12:50:22,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-20 12:50:22,357 INFO L87 Difference]: Start difference. First operand 60 states and 75 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-20 12:50:22,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:50:22,428 INFO L93 Difference]: Finished difference Result 70 states and 87 transitions. [2024-09-20 12:50:22,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 12:50:22,428 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2024-09-20 12:50:22,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:50:22,430 INFO L225 Difference]: With dead ends: 70 [2024-09-20 12:50:22,432 INFO L226 Difference]: Without dead ends: 68 [2024-09-20 12:50:22,433 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-20 12:50:22,433 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:50:22,434 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 106 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:50:22,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-20 12:50:22,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2024-09-20 12:50:22,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 41 states have internal predecessors, (45), 20 states have call successors, (20), 9 states have call predecessors, (20), 8 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 12:50:22,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2024-09-20 12:50:22,456 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 43 [2024-09-20 12:50:22,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:50:22,458 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2024-09-20 12:50:22,458 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-20 12:50:22,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:22,459 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2024-09-20 12:50:22,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-20 12:50:22,460 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:50:22,460 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:50:22,476 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-20 12:50:22,660 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-20 12:50:22,661 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:50:22,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:22,661 INFO L85 PathProgramCache]: Analyzing trace with hash -238148106, now seen corresponding path program 1 times [2024-09-20 12:50:22,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:50:22,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324358735] [2024-09-20 12:50:22,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:50:22,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:50:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:22,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:50:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:22,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 12:50:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:22,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-20 12:50:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:22,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 12:50:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:22,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-20 12:50:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:22,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 12:50:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:22,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 12:50:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:22,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 12:50:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:22,809 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 12:50:22,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:50:22,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324358735] [2024-09-20 12:50:22,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324358735] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:50:22,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 12:50:22,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 12:50:22,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367424074] [2024-09-20 12:50:22,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:50:22,811 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 12:50:22,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:50:22,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 12:50:22,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 12:50:22,812 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-20 12:50:22,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:50:22,863 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2024-09-20 12:50:22,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 12:50:22,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 49 [2024-09-20 12:50:22,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:50:22,865 INFO L225 Difference]: With dead ends: 75 [2024-09-20 12:50:22,866 INFO L226 Difference]: Without dead ends: 63 [2024-09-20 12:50:22,866 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 12:50:22,867 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 3 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:50:22,867 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 123 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:50:22,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-20 12:50:22,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-09-20 12:50:22,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 39 states have internal predecessors, (42), 18 states have call successors, (18), 9 states have call predecessors, (18), 8 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 12:50:22,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2024-09-20 12:50:22,878 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 49 [2024-09-20 12:50:22,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:50:22,879 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2024-09-20 12:50:22,879 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-20 12:50:22,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:22,879 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2024-09-20 12:50:22,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-20 12:50:22,880 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:50:22,881 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:50:22,881 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-20 12:50:22,881 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:50:22,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:22,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1374799408, now seen corresponding path program 1 times [2024-09-20 12:50:22,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:50:22,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954138348] [2024-09-20 12:50:22,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:50:22,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:50:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 12:50:22,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1002503189] [2024-09-20 12:50:22,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:50:22,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:50:22,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:50:22,908 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) [2024-09-20 12:50:22,909 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 12:50:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:22,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-20 12:50:22,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:50:23,256 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-20 12:50:23,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:50:24,731 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-20 12:50:24,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:50:24,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954138348] [2024-09-20 12:50:24,733 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 12:50:24,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002503189] [2024-09-20 12:50:24,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002503189] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:50:24,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 12:50:24,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2024-09-20 12:50:24,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148561142] [2024-09-20 12:50:24,735 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 12:50:24,735 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-20 12:50:24,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:50:24,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-20 12:50:24,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-09-20 12:50:24,737 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-20 12:50:25,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:50:25,345 INFO L93 Difference]: Finished difference Result 138 states and 183 transitions. [2024-09-20 12:50:25,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-20 12:50:25,346 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) Word has length 63 [2024-09-20 12:50:25,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:50:25,348 INFO L225 Difference]: With dead ends: 138 [2024-09-20 12:50:25,348 INFO L226 Difference]: Without dead ends: 115 [2024-09-20 12:50:25,348 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-09-20 12:50:25,349 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 12:50:25,349 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 225 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 12:50:25,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-20 12:50:25,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2024-09-20 12:50:25,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 71 states have internal predecessors, (80), 34 states have call successors, (34), 13 states have call predecessors, (34), 12 states have return successors, (32), 28 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-20 12:50:25,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 146 transitions. [2024-09-20 12:50:25,382 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 146 transitions. Word has length 63 [2024-09-20 12:50:25,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:50:25,382 INFO L474 AbstractCegarLoop]: Abstraction has 113 states and 146 transitions. [2024-09-20 12:50:25,382 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-20 12:50:25,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:25,383 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 146 transitions. [2024-09-20 12:50:25,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-20 12:50:25,384 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:50:25,384 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:50:25,400 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-20 12:50:25,585 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:50:25,585 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:50:25,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:25,586 INFO L85 PathProgramCache]: Analyzing trace with hash -2048390162, now seen corresponding path program 1 times [2024-09-20 12:50:25,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:50:25,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330288979] [2024-09-20 12:50:25,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:50:25,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:50:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 12:50:25,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1433922816] [2024-09-20 12:50:25,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:50:25,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:50:25,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:50:25,615 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) [2024-09-20 12:50:25,618 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-20 12:50:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:25,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-20 12:50:25,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:50:25,929 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-20 12:50:25,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:50:26,408 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-20 12:50:26,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:50:26,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330288979] [2024-09-20 12:50:26,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 12:50:26,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433922816] [2024-09-20 12:50:26,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433922816] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:50:26,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 12:50:26,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-09-20 12:50:26,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306987124] [2024-09-20 12:50:26,409 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 12:50:26,410 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-20 12:50:26,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:50:26,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-20 12:50:26,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-09-20 12:50:26,411 INFO L87 Difference]: Start difference. First operand 113 states and 146 transitions. Second operand has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2024-09-20 12:50:27,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:50:27,088 INFO L93 Difference]: Finished difference Result 168 states and 221 transitions. [2024-09-20 12:50:27,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-20 12:50:27,088 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) Word has length 74 [2024-09-20 12:50:27,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:50:27,090 INFO L225 Difference]: With dead ends: 168 [2024-09-20 12:50:27,090 INFO L226 Difference]: Without dead ends: 136 [2024-09-20 12:50:27,091 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-09-20 12:50:27,092 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 15 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-20 12:50:27,092 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 195 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-20 12:50:27,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-20 12:50:27,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 110. [2024-09-20 12:50:27,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 70 states have internal predecessors, (76), 31 states have call successors, (31), 14 states have call predecessors, (31), 13 states have return successors, (29), 25 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-20 12:50:27,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 136 transitions. [2024-09-20 12:50:27,120 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 136 transitions. Word has length 74 [2024-09-20 12:50:27,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:50:27,121 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 136 transitions. [2024-09-20 12:50:27,121 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2024-09-20 12:50:27,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:27,121 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 136 transitions. [2024-09-20 12:50:27,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-20 12:50:27,123 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:50:27,123 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:50:27,139 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-20 12:50:27,324 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:50:27,325 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:50:27,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:27,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1556827571, now seen corresponding path program 1 times [2024-09-20 12:50:27,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:50:27,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12179721] [2024-09-20 12:50:27,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:50:27,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:50:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:50:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 12:50:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-20 12:50:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 12:50:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-20 12:50:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 12:50:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 12:50:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 12:50:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 12:50:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 12:50:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 12:50:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 12:50:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 12:50:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,622 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-20 12:50:27,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:50:27,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12179721] [2024-09-20 12:50:27,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12179721] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:50:27,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836043864] [2024-09-20 12:50:27,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:50:27,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:50:27,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:50:27,625 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:50:27,627 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-20 12:50:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-20 12:50:27,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:50:27,828 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-20 12:50:27,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:50:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-20 12:50:28,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836043864] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:50:28,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:50:28,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-09-20 12:50:28,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347265676] [2024-09-20 12:50:28,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:50:28,180 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-20 12:50:28,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:50:28,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-20 12:50:28,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-09-20 12:50:28,181 INFO L87 Difference]: Start difference. First operand 110 states and 136 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) [2024-09-20 12:50:28,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:50:28,371 INFO L93 Difference]: Finished difference Result 129 states and 155 transitions. [2024-09-20 12:50:28,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-20 12:50:28,372 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) Word has length 79 [2024-09-20 12:50:28,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:50:28,374 INFO L225 Difference]: With dead ends: 129 [2024-09-20 12:50:28,374 INFO L226 Difference]: Without dead ends: 100 [2024-09-20 12:50:28,374 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 177 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-09-20 12:50:28,375 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:50:28,376 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 225 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:50:28,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-09-20 12:50:28,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-09-20 12:50:28,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 63 states have internal predecessors, (67), 26 states have call successors, (26), 14 states have call predecessors, (26), 13 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-20 12:50:28,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2024-09-20 12:50:28,409 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 79 [2024-09-20 12:50:28,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:50:28,409 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2024-09-20 12:50:28,409 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) [2024-09-20 12:50:28,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:28,410 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2024-09-20 12:50:28,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-20 12:50:28,414 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:50:28,414 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:50:28,430 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-20 12:50:28,615 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-20 12:50:28,615 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:50:28,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:28,615 INFO L85 PathProgramCache]: Analyzing trace with hash -802122381, now seen corresponding path program 2 times [2024-09-20 12:50:28,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:50:28,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939491638] [2024-09-20 12:50:28,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:50:28,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:50:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 12:50:28,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1154953729] [2024-09-20 12:50:28,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 12:50:28,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:50:28,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:50:28,644 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:50:28,645 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-20 12:50:28,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 12:50:28,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:50:28,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-20 12:50:28,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:50:29,069 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 46 proven. 40 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-20 12:50:29,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:50:45,073 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 46 proven. 40 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-20 12:50:45,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:50:45,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939491638] [2024-09-20 12:50:45,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 12:50:45,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154953729] [2024-09-20 12:50:45,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154953729] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:50:45,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 12:50:45,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22 [2024-09-20 12:50:45,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637550357] [2024-09-20 12:50:45,074 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 12:50:45,074 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-20 12:50:45,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:50:45,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-20 12:50:45,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2024-09-20 12:50:45,076 INFO L87 Difference]: Start difference. First operand 100 states and 117 transitions. Second operand has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2024-09-20 12:50:57,661 WARN L293 SmtUtils]: Spent 12.15s on a formula simplification. DAG size of input: 171 DAG size of output: 83 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-20 12:50:58,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 12:51:00,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 12:51:17,472 WARN L293 SmtUtils]: Spent 11.12s on a formula simplification. DAG size of input: 156 DAG size of output: 91 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-20 12:51:18,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:51:18,542 INFO L93 Difference]: Finished difference Result 203 states and 265 transitions. [2024-09-20 12:51:18,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-20 12:51:18,542 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 93 [2024-09-20 12:51:18,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:51:18,544 INFO L225 Difference]: With dead ends: 203 [2024-09-20 12:51:18,544 INFO L226 Difference]: Without dead ends: 170 [2024-09-20 12:51:18,545 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2024-09-20 12:51:18,545 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 66 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-09-20 12:51:18,546 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 513 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-09-20 12:51:18,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-09-20 12:51:18,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 166. [2024-09-20 12:51:18,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.183673469387755) internal successors, (116), 105 states have internal predecessors, (116), 51 states have call successors, (51), 17 states have call predecessors, (51), 16 states have return successors, (49), 43 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-20 12:51:18,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 216 transitions. [2024-09-20 12:51:18,602 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 216 transitions. Word has length 93 [2024-09-20 12:51:18,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:51:18,603 INFO L474 AbstractCegarLoop]: Abstraction has 166 states and 216 transitions. [2024-09-20 12:51:18,603 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2024-09-20 12:51:18,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:51:18,604 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 216 transitions. [2024-09-20 12:51:18,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-20 12:51:18,605 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:51:18,605 INFO L216 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:51:18,624 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-20 12:51:18,806 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:51:18,806 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:51:18,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:51:18,806 INFO L85 PathProgramCache]: Analyzing trace with hash 644553835, now seen corresponding path program 2 times [2024-09-20 12:51:18,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:51:18,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096539920] [2024-09-20 12:51:18,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:51:18,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:51:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 12:51:18,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [514723424] [2024-09-20 12:51:18,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 12:51:18,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:51:18,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:51:18,847 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:51:18,849 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-20 12:51:18,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 12:51:18,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:51:18,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-20 12:51:18,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:51:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 50 proven. 50 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-09-20 12:51:19,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:51:22,510 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 50 proven. 50 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-09-20 12:51:22,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:51:22,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096539920] [2024-09-20 12:51:22,510 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 12:51:22,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514723424] [2024-09-20 12:51:22,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514723424] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:51:22,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 12:51:22,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2024-09-20 12:51:22,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898711325] [2024-09-20 12:51:22,511 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 12:51:22,511 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-20 12:51:22,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:51:22,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-20 12:51:22,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2024-09-20 12:51:22,513 INFO L87 Difference]: Start difference. First operand 166 states and 216 transitions. Second operand has 27 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 16 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) [2024-09-20 12:51:26,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 12:51:27,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:51:27,045 INFO L93 Difference]: Finished difference Result 246 states and 327 transitions. [2024-09-20 12:51:27,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-20 12:51:27,046 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 16 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) Word has length 104 [2024-09-20 12:51:27,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:51:27,047 INFO L225 Difference]: With dead ends: 246 [2024-09-20 12:51:27,047 INFO L226 Difference]: Without dead ends: 185 [2024-09-20 12:51:27,048 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=270, Invalid=852, Unknown=0, NotChecked=0, Total=1122 [2024-09-20 12:51:27,048 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 34 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:51:27,049 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 422 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-09-20 12:51:27,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-09-20 12:51:27,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 161. [2024-09-20 12:51:27,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 96 states have (on average 1.1666666666666667) internal successors, (112), 103 states have internal predecessors, (112), 47 states have call successors, (47), 18 states have call predecessors, (47), 17 states have return successors, (45), 39 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-20 12:51:27,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 204 transitions. [2024-09-20 12:51:27,116 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 204 transitions. Word has length 104 [2024-09-20 12:51:27,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:51:27,116 INFO L474 AbstractCegarLoop]: Abstraction has 161 states and 204 transitions. [2024-09-20 12:51:27,117 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 16 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) [2024-09-20 12:51:27,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:51:27,117 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 204 transitions. [2024-09-20 12:51:27,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-20 12:51:27,118 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:51:27,118 INFO L216 NwaCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:51:27,133 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-20 12:51:27,322 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:51:27,323 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:51:27,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:51:27,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1191181482, now seen corresponding path program 2 times [2024-09-20 12:51:27,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:51:27,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511443157] [2024-09-20 12:51:27,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:51:27,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:51:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:27,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:51:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:27,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 12:51:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:27,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-20 12:51:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:27,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 12:51:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:27,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-20 12:51:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:27,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 12:51:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:27,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 12:51:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:27,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 12:51:27,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:27,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 12:51:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:27,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 12:51:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:27,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 12:51:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:27,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 12:51:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:27,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 12:51:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:27,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 12:51:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:27,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 12:51:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:27,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 12:51:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:27,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 12:51:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:27,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 12:51:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:27,744 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-20 12:51:27,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:51:27,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511443157] [2024-09-20 12:51:27,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511443157] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:51:27,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032869148] [2024-09-20 12:51:27,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 12:51:27,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:51:27,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:51:27,747 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:51:27,748 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-20 12:51:27,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 12:51:27,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:51:27,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-20 12:51:27,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:51:28,036 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-09-20 12:51:28,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:51:29,054 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-09-20 12:51:29,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032869148] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:51:29,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:51:29,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 12] total 25 [2024-09-20 12:51:29,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896219138] [2024-09-20 12:51:29,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:51:29,055 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-20 12:51:29,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:51:29,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-20 12:51:29,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2024-09-20 12:51:29,056 INFO L87 Difference]: Start difference. First operand 161 states and 204 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 18 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 18 states have call predecessors, (49), 18 states have call successors, (49) [2024-09-20 12:51:29,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:51:29,426 INFO L93 Difference]: Finished difference Result 187 states and 231 transitions. [2024-09-20 12:51:29,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-20 12:51:29,427 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 18 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 18 states have call predecessors, (49), 18 states have call successors, (49) Word has length 109 [2024-09-20 12:51:29,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:51:29,429 INFO L225 Difference]: With dead ends: 187 [2024-09-20 12:51:29,429 INFO L226 Difference]: Without dead ends: 145 [2024-09-20 12:51:29,430 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2024-09-20 12:51:29,430 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 21 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 12:51:29,430 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 334 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 12:51:29,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-09-20 12:51:29,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2024-09-20 12:51:29,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 84 states have (on average 1.1428571428571428) internal successors, (96), 89 states have internal predecessors, (96), 38 states have call successors, (38), 17 states have call predecessors, (38), 16 states have return successors, (36), 32 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-20 12:51:29,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 170 transitions. [2024-09-20 12:51:29,498 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 170 transitions. Word has length 109 [2024-09-20 12:51:29,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:51:29,498 INFO L474 AbstractCegarLoop]: Abstraction has 139 states and 170 transitions. [2024-09-20 12:51:29,498 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 18 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 18 states have call predecessors, (49), 18 states have call successors, (49) [2024-09-20 12:51:29,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:51:29,499 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 170 transitions. [2024-09-20 12:51:29,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-09-20 12:51:29,501 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:51:29,502 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:51:29,516 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-20 12:51:29,705 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-20 12:51:29,706 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:51:29,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:51:29,706 INFO L85 PathProgramCache]: Analyzing trace with hash -626389098, now seen corresponding path program 1 times [2024-09-20 12:51:29,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:51:29,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921081799] [2024-09-20 12:51:29,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:51:29,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:51:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:29,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:51:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:29,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 12:51:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:29,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-20 12:51:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:29,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 12:51:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:29,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-20 12:51:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:29,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 12:51:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:29,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 12:51:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:29,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 12:51:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:29,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 12:51:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:29,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 12:51:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:29,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 12:51:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:29,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 12:51:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:29,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 12:51:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:29,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 12:51:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:29,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 12:51:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:29,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 12:51:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:29,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 12:51:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:29,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 12:51:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:29,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 12:51:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:29,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 12:51:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:29,933 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 51 proven. 28 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 12:51:29,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:51:29,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921081799] [2024-09-20 12:51:29,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921081799] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:51:29,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888632280] [2024-09-20 12:51:29,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:51:29,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:51:29,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:51:29,936 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:51:29,937 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-20 12:51:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:29,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-20 12:51:29,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:51:30,051 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 66 proven. 13 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 12:51:30,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:51:30,202 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 66 proven. 13 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 12:51:30,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888632280] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:51:30,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:51:30,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 9 [2024-09-20 12:51:30,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720462680] [2024-09-20 12:51:30,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:51:30,203 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-20 12:51:30,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:51:30,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-20 12:51:30,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-09-20 12:51:30,204 INFO L87 Difference]: Start difference. First operand 139 states and 170 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 9 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2024-09-20 12:51:30,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:51:30,367 INFO L93 Difference]: Finished difference Result 155 states and 191 transitions. [2024-09-20 12:51:30,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-20 12:51:30,367 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 9 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) Word has length 121 [2024-09-20 12:51:30,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:51:30,369 INFO L225 Difference]: With dead ends: 155 [2024-09-20 12:51:30,369 INFO L226 Difference]: Without dead ends: 148 [2024-09-20 12:51:30,369 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 276 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-09-20 12:51:30,370 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 5 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:51:30,370 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 185 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:51:30,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-09-20 12:51:30,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2024-09-20 12:51:30,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 88 states have (on average 1.1363636363636365) internal successors, (100), 93 states have internal predecessors, (100), 42 states have call successors, (42), 17 states have call predecessors, (42), 16 states have return successors, (40), 36 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-20 12:51:30,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 182 transitions. [2024-09-20 12:51:30,464 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 182 transitions. Word has length 121 [2024-09-20 12:51:30,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:51:30,464 INFO L474 AbstractCegarLoop]: Abstraction has 147 states and 182 transitions. [2024-09-20 12:51:30,464 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 9 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2024-09-20 12:51:30,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:51:30,464 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 182 transitions. [2024-09-20 12:51:30,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-09-20 12:51:30,465 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:51:30,466 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:51:30,477 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-20 12:51:30,666 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-20 12:51:30,666 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:51:30,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:51:30,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1967500462, now seen corresponding path program 1 times [2024-09-20 12:51:30,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:51:30,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910116738] [2024-09-20 12:51:30,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:51:30,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:51:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:30,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:51:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:30,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 12:51:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:30,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-20 12:51:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:30,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 12:51:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:30,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-20 12:51:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:30,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 12:51:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:30,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 12:51:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:30,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 12:51:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:30,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 12:51:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:30,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 12:51:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:30,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 12:51:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:30,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 12:51:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:30,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 12:51:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:30,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 12:51:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:30,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 12:51:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:30,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 12:51:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:30,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 12:51:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:30,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 12:51:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:30,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 12:51:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:30,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 12:51:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:30,872 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 63 proven. 15 refuted. 0 times theorem prover too weak. 621 trivial. 0 not checked. [2024-09-20 12:51:30,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:51:30,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910116738] [2024-09-20 12:51:30,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910116738] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:51:30,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583357673] [2024-09-20 12:51:30,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:51:30,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:51:30,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:51:30,875 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:51:30,877 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-20 12:51:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:51:30,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-20 12:51:30,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:51:31,060 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2024-09-20 12:51:31,060 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 12:51:31,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583357673] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:51:31,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-20 12:51:31,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2024-09-20 12:51:31,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959590616] [2024-09-20 12:51:31,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:51:31,061 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-20 12:51:31,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:51:31,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-20 12:51:31,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-09-20 12:51:31,062 INFO L87 Difference]: Start difference. First operand 147 states and 182 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-20 12:51:31,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:51:31,238 INFO L93 Difference]: Finished difference Result 190 states and 238 transitions. [2024-09-20 12:51:31,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-20 12:51:31,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 123 [2024-09-20 12:51:31,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:51:31,240 INFO L225 Difference]: With dead ends: 190 [2024-09-20 12:51:31,241 INFO L226 Difference]: Without dead ends: 147 [2024-09-20 12:51:31,241 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-09-20 12:51:31,241 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 14 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:51:31,242 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 125 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:51:31,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-09-20 12:51:31,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 130. [2024-09-20 12:51:31,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 79 states have (on average 1.1139240506329113) internal successors, (88), 83 states have internal predecessors, (88), 34 states have call successors, (34), 17 states have call predecessors, (34), 16 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-20 12:51:31,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 154 transitions. [2024-09-20 12:51:31,318 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 154 transitions. Word has length 123 [2024-09-20 12:51:31,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:51:31,319 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 154 transitions. [2024-09-20 12:51:31,320 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-20 12:51:31,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:51:31,320 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 154 transitions. [2024-09-20 12:51:31,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-09-20 12:51:31,321 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:51:31,321 INFO L216 NwaCegarLoop]: trace histogram [21, 20, 20, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:51:31,339 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-20 12:51:31,526 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-20 12:51:31,526 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:51:31,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:51:31,527 INFO L85 PathProgramCache]: Analyzing trace with hash -478157618, now seen corresponding path program 3 times [2024-09-20 12:51:31,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:51:31,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19230132] [2024-09-20 12:51:31,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:51:31,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:51:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 12:51:31,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [795885118] [2024-09-20 12:51:31,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 12:51:31,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:51:31,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:51:31,561 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:51:31,562 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-20 12:51:31,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-20 12:51:31,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:51:31,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-20 12:51:31,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:51:31,747 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 163 proven. 53 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2024-09-20 12:51:31,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:51:31,895 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-09-20 12:51:31,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:51:31,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19230132] [2024-09-20 12:51:31,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 12:51:31,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795885118] [2024-09-20 12:51:31,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795885118] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:51:31,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 12:51:31,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2024-09-20 12:51:31,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782238224] [2024-09-20 12:51:31,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 12:51:31,896 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-20 12:51:31,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:51:31,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-20 12:51:31,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-09-20 12:51:31,897 INFO L87 Difference]: Start difference. First operand 130 states and 154 transitions. Second operand has 16 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 7 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) [2024-09-20 12:51:32,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:51:32,104 INFO L93 Difference]: Finished difference Result 130 states and 154 transitions. [2024-09-20 12:51:32,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-20 12:51:32,105 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 7 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) Word has length 134 [2024-09-20 12:51:32,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:51:32,107 INFO L225 Difference]: With dead ends: 130 [2024-09-20 12:51:32,108 INFO L226 Difference]: Without dead ends: 0 [2024-09-20 12:51:32,108 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2024-09-20 12:51:32,109 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 31 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:51:32,109 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 161 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:51:32,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-20 12:51:32,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-20 12:51:32,109 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) [2024-09-20 12:51:32,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-20 12:51:32,110 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 134 [2024-09-20 12:51:32,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:51:32,110 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-20 12:51:32,110 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 7 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) [2024-09-20 12:51:32,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:51:32,113 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-20 12:51:32,113 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-20 12:51:32,115 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-20 12:51:32,131 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-20 12:51:32,317 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-20 12:51:32,320 INFO L408 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:51:32,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-20 12:51:34,666 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-20 12:51:34,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 12:51:34 BoogieIcfgContainer [2024-09-20 12:51:34,681 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-20 12:51:34,681 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-20 12:51:34,681 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-20 12:51:34,681 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-20 12:51:34,682 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:50:20" (3/4) ... [2024-09-20 12:51:34,683 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-20 12:51:34,726 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-20 12:51:34,726 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-20 12:51:34,727 INFO L158 Benchmark]: Toolchain (without parser) took 75205.24ms. Allocated memory was 151.0MB in the beginning and 327.2MB in the end (delta: 176.2MB). Free memory was 97.0MB in the beginning and 150.5MB in the end (delta: -53.5MB). Peak memory consumption was 124.0MB. Max. memory is 16.1GB. [2024-09-20 12:51:34,727 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 151.0MB. Free memory is still 109.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 12:51:34,727 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.37ms. Allocated memory is still 151.0MB. Free memory was 96.6MB in the beginning and 84.7MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-20 12:51:34,727 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.72ms. Allocated memory is still 151.0MB. Free memory was 84.7MB in the beginning and 83.8MB in the end (delta: 960.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 12:51:34,727 INFO L158 Benchmark]: Boogie Preprocessor took 31.30ms. Allocated memory is still 151.0MB. Free memory was 83.8MB in the beginning and 82.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 12:51:34,728 INFO L158 Benchmark]: RCFGBuilder took 313.29ms. Allocated memory was 151.0MB in the beginning and 188.7MB in the end (delta: 37.7MB). Free memory was 81.7MB in the beginning and 157.9MB in the end (delta: -76.3MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2024-09-20 12:51:34,728 INFO L158 Benchmark]: TraceAbstraction took 74545.64ms. Allocated memory was 188.7MB in the beginning and 327.2MB in the end (delta: 138.4MB). Free memory was 156.9MB in the beginning and 152.5MB in the end (delta: 4.4MB). Peak memory consumption was 197.4MB. Max. memory is 16.1GB. [2024-09-20 12:51:34,728 INFO L158 Benchmark]: Witness Printer took 44.86ms. Allocated memory is still 327.2MB. Free memory was 152.5MB in the beginning and 150.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 12:51:34,730 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 151.0MB. Free memory is still 109.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 245.37ms. Allocated memory is still 151.0MB. Free memory was 96.6MB in the beginning and 84.7MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.72ms. Allocated memory is still 151.0MB. Free memory was 84.7MB in the beginning and 83.8MB in the end (delta: 960.5kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.30ms. Allocated memory is still 151.0MB. Free memory was 83.8MB in the beginning and 82.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 313.29ms. Allocated memory was 151.0MB in the beginning and 188.7MB in the end (delta: 37.7MB). Free memory was 81.7MB in the beginning and 157.9MB in the end (delta: -76.3MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * TraceAbstraction took 74545.64ms. Allocated memory was 188.7MB in the beginning and 327.2MB in the end (delta: 138.4MB). Free memory was 156.9MB in the beginning and 152.5MB in the end (delta: 4.4MB). Peak memory consumption was 197.4MB. Max. memory is 16.1GB. * Witness Printer took 44.86ms. Allocated memory is still 327.2MB. Free memory was 152.5MB in the beginning and 150.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: 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, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 72.1s, OverallIterations: 16, TraceHistogramMax: 21, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 40.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 319 SdHoareTripleChecker+Valid, 12.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 264 mSDsluCounter, 3086 SdHoareTripleChecker+Invalid, 11.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2515 mSDsCounter, 424 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2567 IncrementalHoareTripleChecker+Invalid, 2991 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 424 mSolverCounterUnsat, 571 mSDtfsCounter, 2567 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2069 GetRequests, 1867 SyntacticMatches, 10 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 34.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=11, InterpolantAutomatonStates: 150, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 16 MinimizatonAttempts, 96 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 26.9s InterpolantComputationTime, 2106 NumberOfCodeBlocks, 2036 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 2327 ConstructedInterpolants, 0 QuantifiedInterpolants, 21218 SizeOfPredicates, 25 NumberOfNonLiveVariables, 2338 ConjunctsInSsa, 295 ConjunctsInUnsatCore, 29 InterpolantComputations, 8 PerfectInterpolantSequences, 9533/10134 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: 44]: Loop Invariant Derived loop invariant: ((((d == p) && (1 <= p)) && (((long long) A + d) == (((long long) q + p) + r))) && (B == 1)) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((A == r) && (p == 2)) && (d == 2)) && (q == 0)) && (B == 1)) || (((((((A == r) && (((long long) A + d) == ((long long) p + r))) && ((d / 2) <= r)) && ((d % 2) == 0)) && (q == 0)) && (B == 1)) && (4 <= (d / 2)))) || ((((((A == r) && (d == 4)) && (2 <= r)) && (q == 0)) && (B == 1)) && (p == 4))) || (((((A == r) && (d == 1)) && (q == 0)) && (B == 1)) && (p == 1))) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (\old(cond) != 0) Ensures: (\old(cond) != 0) RESULT: Ultimate proved your program to be correct! [2024-09-20 12:51:34,799 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE