./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound5.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound5.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 6518e3283e254ed16f96ad802609fc9f9c972959c7f4631066de203a846c5b0d --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-12 19:26:40,830 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 19:26:40,912 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 19:26:40,919 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 19:26:40,920 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 19:26:40,946 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 19:26:40,946 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 19:26:40,947 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 19:26:40,947 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 19:26:40,951 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 19:26:40,951 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 19:26:40,951 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 19:26:40,952 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 19:26:40,952 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 19:26:40,952 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 19:26:40,953 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 19:26:40,953 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 19:26:40,953 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 19:26:40,953 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 19:26:40,953 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 19:26:40,954 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 19:26:40,955 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 19:26:40,955 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 19:26:40,956 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 19:26:40,956 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 19:26:40,956 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 19:26:40,956 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 19:26:40,956 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 19:26:40,957 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 19:26:40,957 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 19:26:40,957 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 19:26:40,958 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 19:26:40,958 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 19:26:40,959 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 19:26:40,959 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 19:26:40,959 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 19:26:40,959 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 19:26:40,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 19:26:40,960 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 19:26:40,960 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 19:26:40,961 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 19:26:40,961 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 19:26:40,961 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6518e3283e254ed16f96ad802609fc9f9c972959c7f4631066de203a846c5b0d Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 19:26:41,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 19:26:41,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 19:26:41,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 19:26:41,280 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 19:26:41,280 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 19:26:41,282 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound5.c [2024-09-12 19:26:42,845 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 19:26:43,011 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 19:26:43,012 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound5.c [2024-09-12 19:26:43,019 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/9782f87dd/cb7d599a79db49348d16474063664734/FLAG9d1d8fd3d [2024-09-12 19:26:43,425 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/9782f87dd/cb7d599a79db49348d16474063664734 [2024-09-12 19:26:43,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 19:26:43,428 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 19:26:43,431 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 19:26:43,431 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 19:26:43,436 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 19:26:43,437 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 07:26:43" (1/1) ... [2024-09-12 19:26:43,438 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b3bcae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:26:43, skipping insertion in model container [2024-09-12 19:26:43,438 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 07:26:43" (1/1) ... [2024-09-12 19:26:43,454 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 19:26:43,611 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound5.c[537,550] [2024-09-12 19:26:43,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 19:26:43,651 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 19:26:43,662 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound5.c[537,550] [2024-09-12 19:26:43,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 19:26:43,691 INFO L204 MainTranslator]: Completed translation [2024-09-12 19:26:43,692 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:26:43 WrapperNode [2024-09-12 19:26:43,692 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 19:26:43,693 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 19:26:43,694 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 19:26:43,694 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 19:26:43,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:26:43" (1/1) ... [2024-09-12 19:26:43,706 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:26:43" (1/1) ... [2024-09-12 19:26:43,712 INFO L138 Inliner]: procedures = 14, calls = 20, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 19:26:43,712 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 19:26:43,713 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 19:26:43,713 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 19:26:43,714 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 19:26:43,723 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:26:43" (1/1) ... [2024-09-12 19:26:43,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:26:43" (1/1) ... [2024-09-12 19:26:43,729 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:26:43" (1/1) ... [2024-09-12 19:26:43,747 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7]. The 0 writes are split as follows [0, 0]. [2024-09-12 19:26:43,748 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:26:43" (1/1) ... [2024-09-12 19:26:43,748 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:26:43" (1/1) ... [2024-09-12 19:26:43,755 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:26:43" (1/1) ... [2024-09-12 19:26:43,758 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:26:43" (1/1) ... [2024-09-12 19:26:43,760 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:26:43" (1/1) ... [2024-09-12 19:26:43,761 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:26:43" (1/1) ... [2024-09-12 19:26:43,766 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 19:26:43,766 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 19:26:43,767 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 19:26:43,767 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 19:26:43,767 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:26:43" (1/1) ... [2024-09-12 19:26:43,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 19:26:43,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:26:43,799 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) [2024-09-12 19:26:43,807 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 [2024-09-12 19:26:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 19:26:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-12 19:26:43,862 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-12 19:26:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 19:26:43,862 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 19:26:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 19:26:43,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-12 19:26:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 19:26:43,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 19:26:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 19:26:43,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 19:26:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 19:26:43,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 19:26:43,931 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 19:26:43,933 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 19:26:44,109 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-09-12 19:26:44,110 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 19:26:44,130 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 19:26:44,131 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-12 19:26:44,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 07:26:44 BoogieIcfgContainer [2024-09-12 19:26:44,131 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 19:26:44,134 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 19:26:44,134 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 19:26:44,139 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 19:26:44,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 07:26:43" (1/3) ... [2024-09-12 19:26:44,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1fa62a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 07:26:44, skipping insertion in model container [2024-09-12 19:26:44,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:26:43" (2/3) ... [2024-09-12 19:26:44,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1fa62a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 07:26:44, skipping insertion in model container [2024-09-12 19:26:44,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 07:26:44" (3/3) ... [2024-09-12 19:26:44,141 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm2_unwindbound5.c [2024-09-12 19:26:44,155 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 19:26:44,155 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-09-12 19:26:44,212 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 19:26:44,219 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;@69715b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 19:26:44,219 INFO L337 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-09-12 19:26:44,224 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 18 states have (on average 1.5) internal successors, (27), 21 states have internal predecessors, (27), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 19:26:44,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-12 19:26:44,231 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:26:44,232 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:26:44,233 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 19:26:44,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:26:44,237 INFO L85 PathProgramCache]: Analyzing trace with hash -395008272, now seen corresponding path program 1 times [2024-09-12 19:26:44,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:26:44,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930592834] [2024-09-12 19:26:44,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:26:44,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:26:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:44,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:26:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:44,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:26:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:44,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 19:26:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:44,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-12 19:26:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:44,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 19:26:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:44,463 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 19:26:44,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:26:44,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930592834] [2024-09-12 19:26:44,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930592834] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:26:44,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:26:44,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 19:26:44,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133775511] [2024-09-12 19:26:44,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:26:44,484 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 19:26:44,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:26:44,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 19:26:44,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 19:26:44,516 INFO L87 Difference]: Start difference. First operand has 34 states, 18 states have (on average 1.5) internal successors, (27), 21 states have internal predecessors, (27), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 19:26:44,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:26:44,650 INFO L93 Difference]: Finished difference Result 67 states and 91 transitions. [2024-09-12 19:26:44,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 19:26:44,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 28 [2024-09-12 19:26:44,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:26:44,657 INFO L225 Difference]: With dead ends: 67 [2024-09-12 19:26:44,658 INFO L226 Difference]: Without dead ends: 35 [2024-09-12 19:26:44,661 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 19:26:44,664 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:26:44,665 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 37 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:26:44,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-12 19:26:44,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2024-09-12 19:26:44,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 16 states have (on average 1.375) internal successors, (22), 19 states have internal predecessors, (22), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 19:26:44,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-09-12 19:26:44,711 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 28 [2024-09-12 19:26:44,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:26:44,711 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-09-12 19:26:44,711 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 19:26:44,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:26:44,713 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-09-12 19:26:44,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-12 19:26:44,714 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:26:44,714 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:26:44,715 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 19:26:44,715 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 19:26:44,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:26:44,716 INFO L85 PathProgramCache]: Analyzing trace with hash -235051920, now seen corresponding path program 1 times [2024-09-12 19:26:44,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:26:44,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042737945] [2024-09-12 19:26:44,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:26:44,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:26:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:45,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:26:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:45,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:26:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:45,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 19:26:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:45,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-12 19:26:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:45,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 19:26:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:45,075 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 19:26:45,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:26:45,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042737945] [2024-09-12 19:26:45,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042737945] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:26:45,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:26:45,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 19:26:45,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348764505] [2024-09-12 19:26:45,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:26:45,077 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:26:45,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:26:45,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:26:45,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:26:45,078 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 19:26:45,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:26:45,212 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2024-09-12 19:26:45,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 19:26:45,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 28 [2024-09-12 19:26:45,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:26:45,214 INFO L225 Difference]: With dead ends: 43 [2024-09-12 19:26:45,214 INFO L226 Difference]: Without dead ends: 34 [2024-09-12 19:26:45,215 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-09-12 19:26:45,216 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 19 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:26:45,217 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 53 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:26:45,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-12 19:26:45,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-09-12 19:26:45,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 20 states have (on average 1.3) internal successors, (26), 23 states have internal predecessors, (26), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 19:26:45,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2024-09-12 19:26:45,234 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 28 [2024-09-12 19:26:45,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:26:45,236 INFO L474 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2024-09-12 19:26:45,237 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 19:26:45,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:26:45,238 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2024-09-12 19:26:45,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-12 19:26:45,239 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:26:45,239 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:26:45,239 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 19:26:45,240 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 19:26:45,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:26:45,241 INFO L85 PathProgramCache]: Analyzing trace with hash 955956801, now seen corresponding path program 1 times [2024-09-12 19:26:45,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:26:45,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586871084] [2024-09-12 19:26:45,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:26:45,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:26:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:26:45,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1067669826] [2024-09-12 19:26:45,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:26:45,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:26:45,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:26:45,299 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) [2024-09-12 19:26:45,301 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 19:26:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:45,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-12 19:26:45,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:26:45,593 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 19:26:45,595 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 19:26:45,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:26:45,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586871084] [2024-09-12 19:26:45,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:26:45,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067669826] [2024-09-12 19:26:45,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067669826] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:26:45,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:26:45,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 19:26:45,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594334150] [2024-09-12 19:26:45,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:26:45,598 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:26:45,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:26:45,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:26:45,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:26:45,600 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-12 19:26:45,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:26:45,670 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2024-09-12 19:26:45,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:26:45,670 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2024-09-12 19:26:45,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:26:45,672 INFO L225 Difference]: With dead ends: 44 [2024-09-12 19:26:45,674 INFO L226 Difference]: Without dead ends: 41 [2024-09-12 19:26:45,675 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 19:26:45,676 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 5 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:26:45,677 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 109 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:26:45,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-12 19:26:45,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2024-09-12 19:26:45,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 24 states have (on average 1.25) internal successors, (30), 27 states have internal predecessors, (30), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:26:45,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2024-09-12 19:26:45,694 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 34 [2024-09-12 19:26:45,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:26:45,695 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2024-09-12 19:26:45,695 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-12 19:26:45,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:26:45,696 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2024-09-12 19:26:45,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-12 19:26:45,697 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:26:45,697 INFO L216 NwaCegarLoop]: trace histogram [4, 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] [2024-09-12 19:26:45,709 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-12 19:26:45,897 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:26:45,898 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 19:26:45,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:26:45,899 INFO L85 PathProgramCache]: Analyzing trace with hash 271657838, now seen corresponding path program 1 times [2024-09-12 19:26:45,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:26:45,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713802529] [2024-09-12 19:26:45,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:26:45,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:26:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:46,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:26:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:46,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:26:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:46,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 19:26:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:46,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-12 19:26:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:46,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 19:26:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:46,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 19:26:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:46,116 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 19:26:46,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:26:46,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713802529] [2024-09-12 19:26:46,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713802529] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:26:46,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983307343] [2024-09-12 19:26:46,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:26:46,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:26:46,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:26:46,125 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) [2024-09-12 19:26:46,127 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 19:26:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:46,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 19:26:46,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:26:46,253 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 19:26:46,253 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 19:26:46,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983307343] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:26:46,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:26:46,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2024-09-12 19:26:46,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92697880] [2024-09-12 19:26:46,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:26:46,255 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:26:46,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:26:46,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:26:46,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-09-12 19:26:46,256 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 19:26:46,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:26:46,297 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2024-09-12 19:26:46,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 19:26:46,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2024-09-12 19:26:46,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:26:46,301 INFO L225 Difference]: With dead ends: 40 [2024-09-12 19:26:46,301 INFO L226 Difference]: Without dead ends: 39 [2024-09-12 19:26:46,301 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-09-12 19:26:46,302 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 27 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:26:46,302 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 57 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:26:46,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-12 19:26:46,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-09-12 19:26:46,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 26 states have internal predecessors, (29), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:26:46,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2024-09-12 19:26:46,320 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 39 [2024-09-12 19:26:46,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:26:46,321 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2024-09-12 19:26:46,322 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 19:26:46,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:26:46,322 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2024-09-12 19:26:46,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-12 19:26:46,325 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:26:46,325 INFO L216 NwaCegarLoop]: trace histogram [4, 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] [2024-09-12 19:26:46,342 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-12 19:26:46,526 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:26:46,526 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 19:26:46,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:26:46,527 INFO L85 PathProgramCache]: Analyzing trace with hash -168541557, now seen corresponding path program 1 times [2024-09-12 19:26:46,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:26:46,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758206595] [2024-09-12 19:26:46,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:26:46,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:26:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:46,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:26:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:46,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:26:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:46,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 19:26:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:46,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-12 19:26:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:46,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 19:26:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:46,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 19:26:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:46,680 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 19:26:46,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:26:46,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758206595] [2024-09-12 19:26:46,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758206595] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:26:46,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424528201] [2024-09-12 19:26:46,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:26:46,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:26:46,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:26:46,683 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) [2024-09-12 19:26:46,684 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-12 19:26:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:46,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 19:26:46,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:26:46,771 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 19:26:46,772 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 19:26:46,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424528201] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:26:46,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:26:46,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2024-09-12 19:26:46,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307333842] [2024-09-12 19:26:46,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:26:46,773 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:26:46,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:26:46,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:26:46,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-09-12 19:26:46,774 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 19:26:46,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:26:46,842 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2024-09-12 19:26:46,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:26:46,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 40 [2024-09-12 19:26:46,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:26:46,844 INFO L225 Difference]: With dead ends: 46 [2024-09-12 19:26:46,844 INFO L226 Difference]: Without dead ends: 43 [2024-09-12 19:26:46,844 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-09-12 19:26:46,845 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 24 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:26:46,845 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 81 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:26:46,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-12 19:26:46,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2024-09-12 19:26:46,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 10 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 19:26:46,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2024-09-12 19:26:46,857 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 40 [2024-09-12 19:26:46,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:26:46,858 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2024-09-12 19:26:46,858 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-12 19:26:46,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:26:46,858 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2024-09-12 19:26:46,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-12 19:26:46,859 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:26:46,860 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:26:46,876 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-12 19:26:47,060 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:26:47,061 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 19:26:47,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:26:47,062 INFO L85 PathProgramCache]: Analyzing trace with hash 858836671, now seen corresponding path program 1 times [2024-09-12 19:26:47,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:26:47,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802759394] [2024-09-12 19:26:47,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:26:47,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:26:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 19:26:47,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1505751488] [2024-09-12 19:26:47,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:26:47,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:26:47,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:26:47,111 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) [2024-09-12 19:26:47,115 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-12 19:26:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:26:47,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-12 19:26:47,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:26:47,898 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 19:26:47,899 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:26:48,457 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 19:26:48,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:26:48,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802759394] [2024-09-12 19:26:48,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 19:26:48,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505751488] [2024-09-12 19:26:48,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505751488] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:26:48,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 19:26:48,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2024-09-12 19:26:48,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770673014] [2024-09-12 19:26:48,462 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 19:26:48,462 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 19:26:48,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:26:48,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 19:26:48,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-12 19:26:48,463 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-12 19:26:49,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 19:26:51,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:26:51,150 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2024-09-12 19:26:51,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 19:26:51,151 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 45 [2024-09-12 19:26:51,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:26:51,152 INFO L225 Difference]: With dead ends: 51 [2024-09-12 19:26:51,152 INFO L226 Difference]: Without dead ends: 0 [2024-09-12 19:26:51,152 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 79 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-09-12 19:26:51,153 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 8 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-09-12 19:26:51,153 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 148 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-09-12 19:26:51,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-12 19:26:51,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-12 19:26:51,154 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) [2024-09-12 19:26:51,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-12 19:26:51,154 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2024-09-12 19:26:51,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:26:51,155 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-12 19:26:51,155 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-12 19:26:51,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:26:51,155 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-12 19:26:51,156 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-12 19:26:51,159 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 3 remaining) [2024-09-12 19:26:51,159 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 3 remaining) [2024-09-12 19:26:51,159 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2024-09-12 19:26:51,168 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-12 19:26:51,360 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:26:51,363 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-09-12 19:26:51,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-12 19:26:52,893 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-12 19:26:52,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.09 07:26:52 BoogieIcfgContainer [2024-09-12 19:26:52,910 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-12 19:26:52,910 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-12 19:26:52,910 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-12 19:26:52,911 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-12 19:26:52,911 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 07:26:44" (3/4) ... [2024-09-12 19:26:52,913 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-12 19:26:52,919 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-12 19:26:52,920 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-09-12 19:26:52,920 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-12 19:26:52,920 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-09-12 19:26:52,923 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2024-09-12 19:26:52,923 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-09-12 19:26:52,924 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-09-12 19:26:52,924 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-12 19:26:52,924 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-12 19:26:52,951 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((0 <= (counter + 2147483648)) && (((((unsigned long long) b * a) % 2147483648) * 2) == ((((unsigned long long) y * v) + ((unsigned long long) x * u)) % 4294967296))) && (counter <= 5)) && (\old(counter) == 0)) [2024-09-12 19:26:53,004 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-12 19:26:53,009 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-12 19:26:53,009 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-12 19:26:53,014 INFO L158 Benchmark]: Toolchain (without parser) took 9581.30ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 32.9MB in the beginning and 20.1MB in the end (delta: 12.8MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2024-09-12 19:26:53,014 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 48.2MB. Free memory was 28.8MB in the beginning and 28.7MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 19:26:53,015 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.47ms. Allocated memory is still 62.9MB. Free memory was 32.7MB in the beginning and 38.8MB in the end (delta: -6.1MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2024-09-12 19:26:53,016 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.01ms. Allocated memory is still 62.9MB. Free memory was 38.8MB in the beginning and 37.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 19:26:53,016 INFO L158 Benchmark]: Boogie Preprocessor took 52.57ms. Allocated memory is still 62.9MB. Free memory was 37.8MB in the beginning and 36.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-12 19:26:53,016 INFO L158 Benchmark]: RCFGBuilder took 365.05ms. Allocated memory is still 62.9MB. Free memory was 36.2MB in the beginning and 40.2MB in the end (delta: -4.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-12 19:26:53,017 INFO L158 Benchmark]: TraceAbstraction took 8775.82ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 39.6MB in the beginning and 24.4MB in the end (delta: 15.2MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. [2024-09-12 19:26:53,017 INFO L158 Benchmark]: Witness Printer took 98.84ms. Allocated memory is still 75.5MB. Free memory was 24.4MB in the beginning and 20.1MB in the end (delta: 4.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-12 19:26:53,019 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 48.2MB. Free memory was 28.8MB in the beginning and 28.7MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 261.47ms. Allocated memory is still 62.9MB. Free memory was 32.7MB in the beginning and 38.8MB in the end (delta: -6.1MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.01ms. Allocated memory is still 62.9MB. Free memory was 38.8MB in the beginning and 37.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 52.57ms. Allocated memory is still 62.9MB. Free memory was 37.8MB in the beginning and 36.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 365.05ms. Allocated memory is still 62.9MB. Free memory was 36.2MB in the beginning and 40.2MB in the end (delta: -4.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8775.82ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 39.6MB in the beginning and 24.4MB in the end (delta: 15.2MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. * Witness Printer took 98.84ms. Allocated memory is still 75.5MB. Free memory was 24.4MB in the beginning and 20.1MB in the end (delta: 4.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: 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, 34 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 7.2s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 103 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 97 mSDsluCounter, 485 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 327 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 209 IncrementalHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 158 mSDtfsCounter, 209 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 273 GetRequests, 231 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=5, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 372 NumberOfCodeBlocks, 372 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 329 ConstructedInterpolants, 0 QuantifiedInterpolants, 872 SizeOfPredicates, 5 NumberOfNonLiveVariables, 477 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 228/240 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 3 specifications checked. All of them hold - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((0 <= (counter + 2147483648)) && (((((unsigned long long) b * a) % 2147483648) * 2) == ((((unsigned long long) y * v) + ((unsigned long long) x * u)) % 4294967296))) && (counter <= 5)) && (\old(counter) == 0)) - ProcedureContractResult [Line: 8]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Requires: (counter == 0) Ensures: (counter == 0) - ProcedureContractResult [Line: 20]: Procedure Contract for main Derived contract for procedure main. Requires: (counter == 0) Ensures: (\old(counter) == 0) - ProcedureContractResult [Line: 11]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= \old(cond)) Ensures: (1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2024-09-12 19:26:53,039 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE