./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --traceabstraction.encode.modifies.clause.in.ensures.clause.of.contracts true --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fb1cb0b9 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.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 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --traceabstraction.encode.modifies.clause.in.ensures.clause.of.contracts true --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-fb1cb0b-m [2024-09-25 10:52:45,657 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 10:52:45,700 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 10:52:45,704 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 10:52:45,704 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 10:52:45,720 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 10:52:45,721 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 10:52:45,721 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 10:52:45,721 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 10:52:45,722 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 10:52:45,722 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 10:52:45,722 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 10:52:45,723 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 10:52:45,723 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 10:52:45,723 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 10:52:45,723 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 10:52:45,724 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 10:52:45,724 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 10:52:45,724 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 10:52:45,724 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 10:52:45,725 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 10:52:45,725 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 10:52:45,725 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 10:52:45,726 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 10:52:45,726 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 10:52:45,726 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 10:52:45,726 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 10:52:45,727 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 10:52:45,727 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 10:52:45,727 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 10:52:45,727 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 10:52:45,728 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 10:52:45,728 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 10:52:45,728 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 10:52:45,728 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 10:52:45,729 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 10:52:45,729 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 10:52:45,729 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 10:52:45,729 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 10:52:45,730 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 10:52:45,730 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 10:52:45,730 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 10:52:45,731 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 -> 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a 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.plugins.generator.traceabstraction: Encode 'modifies' clause in 'ensures' clause of contracts -> true 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 [2024-09-25 10:52:46,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 10:52:46,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 10:52:46,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 10:52:46,041 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 10:52:46,041 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 10:52:46,045 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2024-09-25 10:52:47,437 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 10:52:47,635 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 10:52:47,635 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2024-09-25 10:52:47,643 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/137fe0dc0/978864f18c464b86afe6431ce96dea4a/FLAGe98eac839 [2024-09-25 10:52:47,657 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/137fe0dc0/978864f18c464b86afe6431ce96dea4a [2024-09-25 10:52:47,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 10:52:47,661 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 10:52:47,663 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 10:52:47,663 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 10:52:47,672 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 10:52:47,672 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:52:47" (1/1) ... [2024-09-25 10:52:47,673 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4182ab93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:52:47, skipping insertion in model container [2024-09-25 10:52:47,673 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:52:47" (1/1) ... [2024-09-25 10:52:47,690 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 10:52:47,804 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/egcd2-ll_valuebound1.c[490,503] [2024-09-25 10:52:47,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 10:52:47,827 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 10:52:47,836 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/egcd2-ll_valuebound1.c[490,503] [2024-09-25 10:52:47,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 10:52:47,859 INFO L204 MainTranslator]: Completed translation [2024-09-25 10:52:47,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:52:47 WrapperNode [2024-09-25 10:52:47,859 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 10:52:47,860 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 10:52:47,860 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 10:52:47,860 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 10:52:47,865 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:52:47" (1/1) ... [2024-09-25 10:52:47,870 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:52:47" (1/1) ... [2024-09-25 10:52:47,875 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 10:52:47,875 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 10:52:47,876 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 10:52:47,876 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 10:52:47,876 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 10:52:47,888 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:52:47" (1/1) ... [2024-09-25 10:52:47,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:52:47" (1/1) ... [2024-09-25 10:52:47,890 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:52:47" (1/1) ... [2024-09-25 10:52:47,904 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-25 10:52:47,905 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:52:47" (1/1) ... [2024-09-25 10:52:47,906 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:52:47" (1/1) ... [2024-09-25 10:52:47,909 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:52:47" (1/1) ... [2024-09-25 10:52:47,913 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:52:47" (1/1) ... [2024-09-25 10:52:47,915 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:52:47" (1/1) ... [2024-09-25 10:52:47,915 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:52:47" (1/1) ... [2024-09-25 10:52:47,920 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 10:52:47,921 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 10:52:47,921 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 10:52:47,921 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 10:52:47,922 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:52:47" (1/1) ... [2024-09-25 10:52:47,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 10:52:47,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:52:47,958 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) [2024-09-25 10:52:47,961 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 [2024-09-25 10:52:48,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 10:52:48,002 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-25 10:52:48,002 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-25 10:52:48,002 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 10:52:48,002 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 10:52:48,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 10:52:48,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 10:52:48,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 10:52:48,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 10:52:48,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 10:52:48,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-25 10:52:48,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-25 10:52:48,065 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 10:52:48,068 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 10:52:48,259 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-25 10:52:48,259 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 10:52:48,289 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 10:52:48,289 INFO L317 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-25 10:52:48,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:52:48 BoogieIcfgContainer [2024-09-25 10:52:48,290 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 10:52:48,292 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 10:52:48,292 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 10:52:48,296 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 10:52:48,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:52:47" (1/3) ... [2024-09-25 10:52:48,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd13b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:52:48, skipping insertion in model container [2024-09-25 10:52:48,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:52:47" (2/3) ... [2024-09-25 10:52:48,299 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd13b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:52:48, skipping insertion in model container [2024-09-25 10:52:48,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:52:48" (3/3) ... [2024-09-25 10:52:48,300 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound1.c [2024-09-25 10:52:48,315 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 10:52:48,316 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 10:52:48,356 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 10:52:48,362 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;@64667db9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 10:52:48,362 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 10:52:48,365 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 18 states have (on average 1.5) internal successors, (27), 20 states have internal predecessors, (27), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-25 10:52:48,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-25 10:52:48,371 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:52:48,372 INFO L216 NwaCegarLoop]: trace histogram [6, 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] [2024-09-25 10:52:48,373 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:52:48,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:52:48,377 INFO L85 PathProgramCache]: Analyzing trace with hash -2011850563, now seen corresponding path program 1 times [2024-09-25 10:52:48,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:52:48,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118827058] [2024-09-25 10:52:48,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:52:48,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:52:48,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:48,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:52:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:48,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 10:52:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:48,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 10:52:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:48,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 10:52:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:48,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-25 10:52:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:48,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-25 10:52:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:48,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-25 10:52:48,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:48,584 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-25 10:52:48,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:52:48,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118827058] [2024-09-25 10:52:48,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118827058] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 10:52:48,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 10:52:48,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-25 10:52:48,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923092736] [2024-09-25 10:52:48,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 10:52:48,609 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-25 10:52:48,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:52:48,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-25 10:52:48,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-25 10:52:48,644 INFO L87 Difference]: Start difference. First operand has 38 states, 18 states have (on average 1.5) internal successors, (27), 20 states have internal predecessors, (27), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-25 10:52:48,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:52:48,676 INFO L93 Difference]: Finished difference Result 70 states and 115 transitions. [2024-09-25 10:52:48,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-25 10:52:48,678 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2024-09-25 10:52:48,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:52:48,684 INFO L225 Difference]: With dead ends: 70 [2024-09-25 10:52:48,684 INFO L226 Difference]: Without dead ends: 34 [2024-09-25 10:52:48,690 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-25 10:52:48,692 INFO L434 NwaCegarLoop]: 47 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, 47 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 [2024-09-25 10:52:48,696 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 10:52:48,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-25 10:52:48,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-09-25 10:52:48,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-25 10:52:48,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2024-09-25 10:52:48,729 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 42 [2024-09-25 10:52:48,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:52:48,729 INFO L474 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2024-09-25 10:52:48,730 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-25 10:52:48,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:52:48,731 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2024-09-25 10:52:48,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-25 10:52:48,732 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:52:48,732 INFO L216 NwaCegarLoop]: trace histogram [6, 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] [2024-09-25 10:52:48,733 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-25 10:52:48,733 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:52:48,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:52:48,734 INFO L85 PathProgramCache]: Analyzing trace with hash -213832741, now seen corresponding path program 1 times [2024-09-25 10:52:48,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:52:48,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673805138] [2024-09-25 10:52:48,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:52:48,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:52:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:48,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:52:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:48,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 10:52:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:48,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 10:52:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:48,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 10:52:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:48,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-25 10:52:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:48,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-25 10:52:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:48,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-25 10:52:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:48,958 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-25 10:52:48,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:52:48,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673805138] [2024-09-25 10:52:48,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673805138] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:52:48,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871266790] [2024-09-25 10:52:48,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:52:48,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:52:48,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:52:48,961 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) [2024-09-25 10:52:48,962 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-25 10:52:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:49,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-25 10:52:49,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:52:49,277 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-25 10:52:49,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:52:49,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871266790] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:52:49,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 10:52:49,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 11 [2024-09-25 10:52:49,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405028588] [2024-09-25 10:52:49,384 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 10:52:49,384 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-25 10:52:49,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:52:49,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-25 10:52:49,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-09-25 10:52:49,386 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-25 10:52:49,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:52:49,610 INFO L93 Difference]: Finished difference Result 55 states and 72 transitions. [2024-09-25 10:52:49,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-25 10:52:49,611 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 43 [2024-09-25 10:52:49,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:52:49,612 INFO L225 Difference]: With dead ends: 55 [2024-09-25 10:52:49,613 INFO L226 Difference]: Without dead ends: 47 [2024-09-25 10:52:49,613 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-09-25 10:52:49,615 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 27 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:52:49,615 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 233 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:52:49,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-25 10:52:49,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-09-25 10:52:49,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-25 10:52:49,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2024-09-25 10:52:49,637 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 43 [2024-09-25 10:52:49,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:52:49,638 INFO L474 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2024-09-25 10:52:49,638 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-25 10:52:49,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:52:49,638 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2024-09-25 10:52:49,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-25 10:52:49,639 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:52:49,639 INFO L216 NwaCegarLoop]: trace histogram [6, 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] [2024-09-25 10:52:49,657 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-25 10:52:49,843 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:52:49,844 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:52:49,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:52:49,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1967462229, now seen corresponding path program 1 times [2024-09-25 10:52:49,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:52:49,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698752720] [2024-09-25 10:52:49,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:52:49,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:52:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:52:49,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [108163938] [2024-09-25 10:52:49,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:52:49,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:52:49,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:52:49,880 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) [2024-09-25 10:52:49,885 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-25 10:52:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:49,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-25 10:52:49,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:52:49,954 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-25 10:52:49,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 10:52:49,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:52:49,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698752720] [2024-09-25 10:52:49,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:52:49,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108163938] [2024-09-25 10:52:49,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108163938] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 10:52:49,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 10:52:49,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 10:52:49,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85067318] [2024-09-25 10:52:49,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 10:52:49,957 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 10:52:49,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:52:49,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 10:52:49,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 10:52:49,958 INFO L87 Difference]: Start difference. First operand 46 states and 61 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-25 10:52:50,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:52:50,002 INFO L93 Difference]: Finished difference Result 65 states and 89 transitions. [2024-09-25 10:52:50,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 10:52:50,002 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 44 [2024-09-25 10:52:50,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:52:50,003 INFO L225 Difference]: With dead ends: 65 [2024-09-25 10:52:50,003 INFO L226 Difference]: Without dead ends: 63 [2024-09-25 10:52:50,004 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-25 10:52:50,005 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 4 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 10:52:50,005 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 144 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 10:52:50,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-25 10:52:50,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2024-09-25 10:52:50,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 31 states have internal predecessors, (32), 20 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-25 10:52:50,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2024-09-25 10:52:50,015 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 44 [2024-09-25 10:52:50,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:52:50,016 INFO L474 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2024-09-25 10:52:50,016 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-25 10:52:50,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:52:50,016 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2024-09-25 10:52:50,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-25 10:52:50,017 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:52:50,017 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 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] [2024-09-25 10:52:50,031 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-25 10:52:50,221 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:52:50,222 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:52:50,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:52:50,222 INFO L85 PathProgramCache]: Analyzing trace with hash -189867411, now seen corresponding path program 1 times [2024-09-25 10:52:50,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:52:50,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017788121] [2024-09-25 10:52:50,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:52:50,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:52:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:52:50,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [213722054] [2024-09-25 10:52:50,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:52:50,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:52:50,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:52:50,252 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) [2024-09-25 10:52:50,254 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-25 10:52:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:50,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-25 10:52:50,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:52:50,422 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-25 10:52:50,422 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 10:52:50,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:52:50,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017788121] [2024-09-25 10:52:50,423 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:52:50,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213722054] [2024-09-25 10:52:50,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213722054] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 10:52:50,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 10:52:50,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 10:52:50,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569616010] [2024-09-25 10:52:50,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 10:52:50,424 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 10:52:50,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:52:50,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 10:52:50,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 10:52:50,425 INFO L87 Difference]: Start difference. First operand 54 states and 70 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) [2024-09-25 10:52:50,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:52:50,489 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2024-09-25 10:52:50,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 10:52:50,493 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 [2024-09-25 10:52:50,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:52:50,495 INFO L225 Difference]: With dead ends: 61 [2024-09-25 10:52:50,495 INFO L226 Difference]: Without dead ends: 59 [2024-09-25 10:52:50,495 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-25 10:52:50,497 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 5 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 10:52:50,499 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 154 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 10:52:50,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-25 10:52:50,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2024-09-25 10:52:50,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 34 states have internal predecessors, (35), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-25 10:52:50,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2024-09-25 10:52:50,523 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 49 [2024-09-25 10:52:50,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:52:50,524 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2024-09-25 10:52:50,524 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) [2024-09-25 10:52:50,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:52:50,525 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2024-09-25 10:52:50,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-25 10:52:50,526 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:52:50,526 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:52:50,539 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-25 10:52:50,730 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:52:50,731 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:52:50,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:52:50,731 INFO L85 PathProgramCache]: Analyzing trace with hash -470549715, now seen corresponding path program 1 times [2024-09-25 10:52:50,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:52:50,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831658047] [2024-09-25 10:52:50,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:52:50,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:52:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:52:50,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1610399075] [2024-09-25 10:52:50,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:52:50,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:52:50,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:52:50,760 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) [2024-09-25 10:52:50,772 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-25 10:52:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:50,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-25 10:52:50,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:52:51,005 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-09-25 10:52:51,005 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:52:51,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:52:51,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831658047] [2024-09-25 10:52:51,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:52:51,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610399075] [2024-09-25 10:52:51,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610399075] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:52:51,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-25 10:52:51,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-09-25 10:52:51,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030133756] [2024-09-25 10:52:51,119 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-25 10:52:51,119 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-25 10:52:51,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:52:51,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-25 10:52:51,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-25 10:52:51,121 INFO L87 Difference]: Start difference. First operand 58 states and 73 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-25 10:52:51,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:52:51,286 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2024-09-25 10:52:51,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-25 10:52:51,291 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 59 [2024-09-25 10:52:51,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:52:51,292 INFO L225 Difference]: With dead ends: 67 [2024-09-25 10:52:51,292 INFO L226 Difference]: Without dead ends: 65 [2024-09-25 10:52:51,292 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-09-25 10:52:51,292 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 22 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:52:51,293 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 201 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:52:51,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-09-25 10:52:51,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2024-09-25 10:52:51,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 37 states have internal predecessors, (38), 20 states have call successors, (20), 8 states have call predecessors, (20), 7 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-25 10:52:51,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2024-09-25 10:52:51,302 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 59 [2024-09-25 10:52:51,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:52:51,302 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2024-09-25 10:52:51,303 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-25 10:52:51,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:52:51,303 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2024-09-25 10:52:51,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-09-25 10:52:51,304 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:52:51,304 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 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, 1] [2024-09-25 10:52:51,316 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-25 10:52:51,504 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:52:51,505 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:52:51,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:52:51,505 INFO L85 PathProgramCache]: Analyzing trace with hash 487403380, now seen corresponding path program 1 times [2024-09-25 10:52:51,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:52:51,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277230899] [2024-09-25 10:52:51,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:52:51,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:52:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:52:51,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1214576230] [2024-09-25 10:52:51,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:52:51,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:52:51,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:52:51,526 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) [2024-09-25 10:52:51,527 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-25 10:52:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:51,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-25 10:52:51,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:52:51,751 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-25 10:52:51,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:52:51,849 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-09-25 10:52:51,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:52:51,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277230899] [2024-09-25 10:52:51,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:52:51,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214576230] [2024-09-25 10:52:51,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214576230] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-25 10:52:51,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-25 10:52:51,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 12 [2024-09-25 10:52:51,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808140780] [2024-09-25 10:52:51,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 10:52:51,851 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 10:52:51,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:52:51,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 10:52:51,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-09-25 10:52:51,853 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-09-25 10:52:51,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:52:51,910 INFO L93 Difference]: Finished difference Result 68 states and 81 transitions. [2024-09-25 10:52:51,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 10:52:51,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 66 [2024-09-25 10:52:51,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:52:51,913 INFO L225 Difference]: With dead ends: 68 [2024-09-25 10:52:51,913 INFO L226 Difference]: Without dead ends: 66 [2024-09-25 10:52:51,913 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-09-25 10:52:51,914 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 4 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 10:52:51,914 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 138 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 10:52:51,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-25 10:52:51,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2024-09-25 10:52:51,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-25 10:52:51,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2024-09-25 10:52:51,931 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 66 [2024-09-25 10:52:51,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:52:51,931 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2024-09-25 10:52:51,931 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-09-25 10:52:51,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:52:51,932 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2024-09-25 10:52:51,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-25 10:52:51,932 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:52:51,933 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 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, 1, 1, 1, 1, 1] [2024-09-25 10:52:51,950 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-25 10:52:52,133 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-25 10:52:52,134 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:52:52,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:52:52,135 INFO L85 PathProgramCache]: Analyzing trace with hash -2098403842, now seen corresponding path program 1 times [2024-09-25 10:52:52,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:52:52,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990935826] [2024-09-25 10:52:52,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:52:52,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:52:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:52,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:52:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:52,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 10:52:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:52,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 10:52:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:52,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 10:52:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:52,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-25 10:52:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:52,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-25 10:52:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:52,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-25 10:52:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:52,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 10:52:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:52,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 10:52:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:52,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 10:52:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:52,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 10:52:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:52,290 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-09-25 10:52:52,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:52:52,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990935826] [2024-09-25 10:52:52,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990935826] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:52:52,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394243343] [2024-09-25 10:52:52,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:52:52,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:52:52,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:52:52,293 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) [2024-09-25 10:52:52,310 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-25 10:52:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:52,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-25 10:52:52,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:52:52,737 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-25 10:52:52,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:52:52,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394243343] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:52:52,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 10:52:52,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13] total 17 [2024-09-25 10:52:52,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989691080] [2024-09-25 10:52:52,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 10:52:52,895 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-25 10:52:52,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:52:52,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-25 10:52:52,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2024-09-25 10:52:52,896 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 10 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2024-09-25 10:52:53,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:52:53,185 INFO L93 Difference]: Finished difference Result 90 states and 111 transitions. [2024-09-25 10:52:53,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-25 10:52:53,185 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 10 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) Word has length 68 [2024-09-25 10:52:53,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:52:53,186 INFO L225 Difference]: With dead ends: 90 [2024-09-25 10:52:53,188 INFO L226 Difference]: Without dead ends: 69 [2024-09-25 10:52:53,188 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2024-09-25 10:52:53,189 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 43 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:52:53,189 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 339 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:52:53,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-09-25 10:52:53,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2024-09-25 10:52:53,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 38 states have internal predecessors, (41), 22 states have call successors, (22), 9 states have call predecessors, (22), 8 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-25 10:52:53,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 83 transitions. [2024-09-25 10:52:53,204 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 83 transitions. Word has length 68 [2024-09-25 10:52:53,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:52:53,207 INFO L474 AbstractCegarLoop]: Abstraction has 68 states and 83 transitions. [2024-09-25 10:52:53,207 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 10 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2024-09-25 10:52:53,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:52:53,207 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 83 transitions. [2024-09-25 10:52:53,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-09-25 10:52:53,210 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:52:53,210 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1] [2024-09-25 10:52:53,233 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-25 10:52:53,411 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:52:53,412 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:52:53,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:52:53,412 INFO L85 PathProgramCache]: Analyzing trace with hash -607760099, now seen corresponding path program 1 times [2024-09-25 10:52:53,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:52:53,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801043233] [2024-09-25 10:52:53,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:52:53,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:52:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:52:53,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1405578427] [2024-09-25 10:52:53,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:52:53,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:52:53,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:52:53,451 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) [2024-09-25 10:52:53,452 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-25 10:52:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:52:53,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-25 10:52:53,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:52:54,131 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 22 proven. 26 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-09-25 10:52:54,132 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:52:55,124 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-09-25 10:52:55,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:52:55,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801043233] [2024-09-25 10:52:55,124 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:52:55,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405578427] [2024-09-25 10:52:55,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405578427] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:52:55,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 10:52:55,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2024-09-25 10:52:55,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453877261] [2024-09-25 10:52:55,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 10:52:55,125 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-25 10:52:55,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:52:55,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-25 10:52:55,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2024-09-25 10:52:55,127 INFO L87 Difference]: Start difference. First operand 68 states and 83 transitions. Second operand has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 19 states have internal predecessors, (39), 13 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 11 states have call predecessors, (28), 11 states have call successors, (28) [2024-09-25 10:53:00,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-25 10:53:00,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:53:00,959 INFO L93 Difference]: Finished difference Result 159 states and 233 transitions. [2024-09-25 10:53:00,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-25 10:53:00,960 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 19 states have internal predecessors, (39), 13 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 11 states have call predecessors, (28), 11 states have call successors, (28) Word has length 90 [2024-09-25 10:53:00,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:53:00,962 INFO L225 Difference]: With dead ends: 159 [2024-09-25 10:53:00,962 INFO L226 Difference]: Without dead ends: 157 [2024-09-25 10:53:00,963 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=446, Invalid=1716, Unknown=0, NotChecked=0, Total=2162 [2024-09-25 10:53:00,963 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 150 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 170 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-09-25 10:53:00,964 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 632 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 512 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2024-09-25 10:53:00,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-09-25 10:53:01,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 121. [2024-09-25 10:53:01,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 62 states have internal predecessors, (73), 51 states have call successors, (51), 10 states have call predecessors, (51), 9 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-25 10:53:01,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 173 transitions. [2024-09-25 10:53:01,012 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 173 transitions. Word has length 90 [2024-09-25 10:53:01,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:53:01,013 INFO L474 AbstractCegarLoop]: Abstraction has 121 states and 173 transitions. [2024-09-25 10:53:01,013 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 19 states have internal predecessors, (39), 13 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 11 states have call predecessors, (28), 11 states have call successors, (28) [2024-09-25 10:53:01,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:01,013 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 173 transitions. [2024-09-25 10:53:01,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-09-25 10:53:01,016 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:53:01,017 INFO L216 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:53:01,033 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-25 10:53:01,218 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:53:01,219 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:53:01,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:01,219 INFO L85 PathProgramCache]: Analyzing trace with hash 281468069, now seen corresponding path program 1 times [2024-09-25 10:53:01,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:53:01,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927861298] [2024-09-25 10:53:01,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:01,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:53:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:53:01,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [697458643] [2024-09-25 10:53:01,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:01,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:53:01,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:53:01,254 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) [2024-09-25 10:53:01,255 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-25 10:53:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:01,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-25 10:53:01,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:53:01,693 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 24 proven. 26 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-25 10:53:01,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:53:02,016 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-09-25 10:53:02,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:53:02,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927861298] [2024-09-25 10:53:02,017 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:53:02,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697458643] [2024-09-25 10:53:02,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697458643] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:53:02,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 10:53:02,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 22 [2024-09-25 10:53:02,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770284017] [2024-09-25 10:53:02,018 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 10:53:02,018 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-25 10:53:02,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:53:02,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-25 10:53:02,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2024-09-25 10:53:02,019 INFO L87 Difference]: Start difference. First operand 121 states and 173 transitions. Second operand has 22 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 11 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 11 states have call predecessors, (30), 11 states have call successors, (30) [2024-09-25 10:53:03,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:53:03,112 INFO L93 Difference]: Finished difference Result 244 states and 378 transitions. [2024-09-25 10:53:03,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-25 10:53:03,113 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 11 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 11 states have call predecessors, (30), 11 states have call successors, (30) Word has length 95 [2024-09-25 10:53:03,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:53:03,116 INFO L225 Difference]: With dead ends: 244 [2024-09-25 10:53:03,116 INFO L226 Difference]: Without dead ends: 238 [2024-09-25 10:53:03,117 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=269, Invalid=991, Unknown=0, NotChecked=0, Total=1260 [2024-09-25 10:53:03,117 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 108 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-25 10:53:03,126 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 451 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-25 10:53:03,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-09-25 10:53:03,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 189. [2024-09-25 10:53:03,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 94 states have (on average 1.2446808510638299) internal successors, (117), 97 states have internal predecessors, (117), 84 states have call successors, (84), 11 states have call predecessors, (84), 10 states have return successors, (81), 80 states have call predecessors, (81), 81 states have call successors, (81) [2024-09-25 10:53:03,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 282 transitions. [2024-09-25 10:53:03,212 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 282 transitions. Word has length 95 [2024-09-25 10:53:03,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:53:03,212 INFO L474 AbstractCegarLoop]: Abstraction has 189 states and 282 transitions. [2024-09-25 10:53:03,213 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 11 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 11 states have call predecessors, (30), 11 states have call successors, (30) [2024-09-25 10:53:03,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:03,213 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 282 transitions. [2024-09-25 10:53:03,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-09-25 10:53:03,214 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:53:03,214 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 6, 6, 6, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2024-09-25 10:53:03,227 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-25 10:53:03,418 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:53:03,419 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:53:03,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:03,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1141291923, now seen corresponding path program 1 times [2024-09-25 10:53:03,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:53:03,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153677439] [2024-09-25 10:53:03,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:03,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:53:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:03,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:53:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:03,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 10:53:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:03,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 10:53:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:03,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 10:53:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:03,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-25 10:53:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:03,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-25 10:53:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:03,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-25 10:53:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:03,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 10:53:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:03,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 10:53:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:03,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 10:53:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:03,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 10:53:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:03,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-25 10:53:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:03,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-25 10:53:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:03,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-25 10:53:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:03,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-25 10:53:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:03,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-25 10:53:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:03,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-25 10:53:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:03,715 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 39 proven. 12 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-09-25 10:53:03,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:53:03,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153677439] [2024-09-25 10:53:03,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153677439] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:53:03,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186455535] [2024-09-25 10:53:03,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:03,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:53:03,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:53:03,717 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) [2024-09-25 10:53:03,718 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-25 10:53:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:03,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-25 10:53:03,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:53:03,812 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 99 proven. 12 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-09-25 10:53:03,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:53:03,916 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 33 proven. 18 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-09-25 10:53:03,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186455535] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:53:03,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:53:03,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-09-25 10:53:03,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811181688] [2024-09-25 10:53:03,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:53:03,918 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-25 10:53:03,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:53:03,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-25 10:53:03,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-09-25 10:53:03,919 INFO L87 Difference]: Start difference. First operand 189 states and 282 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2024-09-25 10:53:04,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:53:04,049 INFO L93 Difference]: Finished difference Result 200 states and 291 transitions. [2024-09-25 10:53:04,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-25 10:53:04,049 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) Word has length 101 [2024-09-25 10:53:04,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:53:04,050 INFO L225 Difference]: With dead ends: 200 [2024-09-25 10:53:04,050 INFO L226 Difference]: Without dead ends: 71 [2024-09-25 10:53:04,051 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 232 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2024-09-25 10:53:04,052 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 9 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:53:04,052 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 299 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:53:04,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-25 10:53:04,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-09-25 10:53:04,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 38 states have internal predecessors, (39), 25 states have call successors, (25), 9 states have call predecessors, (25), 7 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-25 10:53:04,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 87 transitions. [2024-09-25 10:53:04,066 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 87 transitions. Word has length 101 [2024-09-25 10:53:04,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:53:04,066 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 87 transitions. [2024-09-25 10:53:04,066 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2024-09-25 10:53:04,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:04,067 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 87 transitions. [2024-09-25 10:53:04,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-09-25 10:53:04,067 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:53:04,068 INFO L216 NwaCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 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] [2024-09-25 10:53:04,085 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-25 10:53:04,268 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-25 10:53:04,269 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:53:04,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:04,269 INFO L85 PathProgramCache]: Analyzing trace with hash -183794789, now seen corresponding path program 2 times [2024-09-25 10:53:04,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:53:04,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865400516] [2024-09-25 10:53:04,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:04,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:53:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:04,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:53:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:04,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 10:53:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:04,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 10:53:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:04,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 10:53:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:04,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-25 10:53:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:04,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-25 10:53:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:04,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-25 10:53:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:04,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 10:53:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:04,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 10:53:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:04,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 10:53:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:04,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 10:53:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:04,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-25 10:53:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:04,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-25 10:53:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:04,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-25 10:53:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:04,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-25 10:53:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:04,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-25 10:53:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:04,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-25 10:53:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:04,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-25 10:53:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:04,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-25 10:53:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:04,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-25 10:53:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:04,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-25 10:53:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:04,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-25 10:53:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:04,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-25 10:53:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:04,478 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-09-25 10:53:04,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:53:04,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865400516] [2024-09-25 10:53:04,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865400516] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:53:04,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193888334] [2024-09-25 10:53:04,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 10:53:04,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:53:04,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:53:04,480 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) [2024-09-25 10:53:04,481 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-25 10:53:04,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 10:53:04,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:53:04,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-25 10:53:04,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:53:04,612 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-09-25 10:53:04,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:53:04,794 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-09-25 10:53:04,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193888334] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:53:04,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:53:04,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2024-09-25 10:53:04,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509272608] [2024-09-25 10:53:04,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:53:04,795 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-25 10:53:04,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:53:04,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-25 10:53:04,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-09-25 10:53:04,796 INFO L87 Difference]: Start difference. First operand 71 states and 87 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 15 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (49), 14 states have call predecessors, (49), 14 states have call successors, (49) [2024-09-25 10:53:04,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:53:04,984 INFO L93 Difference]: Finished difference Result 71 states and 87 transitions. [2024-09-25 10:53:04,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-25 10:53:04,984 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 15 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (49), 14 states have call predecessors, (49), 14 states have call successors, (49) Word has length 134 [2024-09-25 10:53:04,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:53:04,985 INFO L225 Difference]: With dead ends: 71 [2024-09-25 10:53:04,985 INFO L226 Difference]: Without dead ends: 0 [2024-09-25 10:53:04,985 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2024-09-25 10:53:04,985 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 20 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:53:04,986 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 438 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:53:04,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-25 10:53:04,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-25 10:53:04,986 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) [2024-09-25 10:53:04,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-25 10:53:04,987 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 134 [2024-09-25 10:53:04,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:53:04,987 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-25 10:53:04,987 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 15 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (49), 14 states have call predecessors, (49), 14 states have call successors, (49) [2024-09-25 10:53:04,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:04,987 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-25 10:53:04,988 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-25 10:53:04,990 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-25 10:53:05,006 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-25 10:53:05,194 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-25 10:53:05,197 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:53:05,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-25 10:53:06,012 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-25 10:53:06,028 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 10:53:06,029 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 10:53:06,029 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 10:53:06,029 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 10:53:06,029 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 10:53:06,029 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 10:53:06,030 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 10:53:06,030 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 10:53:06,030 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 10:53:06,031 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 10:53:06,031 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 10:53:06,031 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 10:53:06,031 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 10:53:06,031 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 10:53:06,031 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 10:53:06,031 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 10:53:06,032 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 10:53:06,032 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 10:53:06,032 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 10:53:06,032 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 10:53:06,032 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 10:53:06,032 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 10:53:06,032 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 10:53:06,032 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 10:53:06,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:53:06 BoogieIcfgContainer [2024-09-25 10:53:06,033 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-25 10:53:06,033 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-25 10:53:06,033 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-25 10:53:06,033 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-25 10:53:06,034 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:52:48" (3/4) ... [2024-09-25 10:53:06,035 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-25 10:53:06,088 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-25 10:53:06,088 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-25 10:53:06,089 INFO L158 Benchmark]: Toolchain (without parser) took 18428.02ms. Allocated memory was 60.8MB in the beginning and 197.1MB in the end (delta: 136.3MB). Free memory was 37.5MB in the beginning and 104.6MB in the end (delta: -67.2MB). Peak memory consumption was 69.4MB. Max. memory is 16.1GB. [2024-09-25 10:53:06,089 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 60.8MB. Free memory was 37.4MB in the beginning and 37.3MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 10:53:06,089 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.63ms. Allocated memory is still 60.8MB. Free memory was 37.3MB in the beginning and 25.3MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-25 10:53:06,090 INFO L158 Benchmark]: Boogie Procedure Inliner took 15.27ms. Allocated memory is still 60.8MB. Free memory was 25.1MB in the beginning and 24.2MB in the end (delta: 915.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 10:53:06,090 INFO L158 Benchmark]: Boogie Preprocessor took 44.74ms. Allocated memory was 60.8MB in the beginning and 94.4MB in the end (delta: 33.6MB). Free memory was 24.2MB in the beginning and 74.2MB in the end (delta: -50.0MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. [2024-09-25 10:53:06,090 INFO L158 Benchmark]: RCFGBuilder took 368.47ms. Allocated memory is still 94.4MB. Free memory was 74.2MB in the beginning and 59.9MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-25 10:53:06,090 INFO L158 Benchmark]: TraceAbstraction took 17741.02ms. Allocated memory was 94.4MB in the beginning and 197.1MB in the end (delta: 102.8MB). Free memory was 59.1MB in the beginning and 106.7MB in the end (delta: -47.6MB). Peak memory consumption was 106.5MB. Max. memory is 16.1GB. [2024-09-25 10:53:06,091 INFO L158 Benchmark]: Witness Printer took 55.25ms. Allocated memory is still 197.1MB. Free memory was 106.7MB in the beginning and 104.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 10:53:06,092 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 60.8MB. Free memory was 37.4MB in the beginning and 37.3MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 196.63ms. Allocated memory is still 60.8MB. Free memory was 37.3MB in the beginning and 25.3MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 15.27ms. Allocated memory is still 60.8MB. Free memory was 25.1MB in the beginning and 24.2MB in the end (delta: 915.2kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 44.74ms. Allocated memory was 60.8MB in the beginning and 94.4MB in the end (delta: 33.6MB). Free memory was 24.2MB in the beginning and 74.2MB in the end (delta: -50.0MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. * RCFGBuilder took 368.47ms. Allocated memory is still 94.4MB. Free memory was 74.2MB in the beginning and 59.9MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 17741.02ms. Allocated memory was 94.4MB in the beginning and 197.1MB in the end (delta: 102.8MB). Free memory was 59.1MB in the beginning and 106.7MB in the end (delta: -47.6MB). Peak memory consumption was 106.5MB. Max. memory is 16.1GB. * Witness Printer took 55.25ms. Allocated memory is still 197.1MB. Free memory was 106.7MB in the beginning and 104.6MB 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid * 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: 13]: 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, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 16.9s, OverallIterations: 11, TraceHistogramMax: 17, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 416 SdHoareTripleChecker+Valid, 6.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 392 mSDsluCounter, 3076 SdHoareTripleChecker+Invalid, 5.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2640 mSDsCounter, 402 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1934 IncrementalHoareTripleChecker+Invalid, 2337 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 402 mSolverCounterUnsat, 436 mSDtfsCounter, 1934 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1471 GetRequests, 1281 SyntacticMatches, 6 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=189occurred in iteration=9, InterpolantAutomatonStates: 118, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 108 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 1540 NumberOfCodeBlocks, 1540 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1603 ConstructedInterpolants, 0 QuantifiedInterpolants, 5248 SizeOfPredicates, 23 NumberOfNonLiveVariables, 1837 ConjunctsInSsa, 212 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 3904/4266 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: 47]: Loop Invariant Derived loop invariant: ((((((((((((a == 1) && (r == 0)) && (b == 1)) && (y == 1)) && (k == 0)) && (s == 1)) && (x == 1)) && (q == 0)) && (yy == 1)) && (c == 1)) && (p == 1)) || (((((((((((a == 1) && (r == 0)) && (b == 1)) && (y == 1)) && (s == 1)) && (x == 1)) && (k == 1)) && (q == 0)) && (c == 0)) && (yy == 1)) && (p == 1))) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((((((((((a == 1) && (r == 0)) && (b == 1)) && (y == 1)) && (s == 1)) && (x == 1)) && (q == 0)) && (yy == 1)) && (p == 1)) || (((((b == 0) && (y == 1)) && (a == (((__int128) y * r) + ((__int128) p * x)))) && (x == 1)) && (((__int128) q + s) == 0))) - ProcedureContractResult [Line: 7]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 10]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-09-25 10:53:06,118 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