./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --traceabstraction.encode.modifies.clause.in.ensures.clause.of.contracts true --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fb1cb0b9 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.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 a93c350e5795e32421c3bef9d7525c3fd53f570f971d574def19132b3d6f08b8 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --traceabstraction.encode.modifies.clause.in.ensures.clause.of.contracts true --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-fb1cb0b-m [2024-09-25 11:07:09,650 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 11:07:09,734 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 11:07:09,741 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 11:07:09,741 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 11:07:09,773 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 11:07:09,774 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 11:07:09,774 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 11:07:09,775 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 11:07:09,777 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 11:07:09,777 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 11:07:09,777 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 11:07:09,778 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 11:07:09,778 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 11:07:09,779 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 11:07:09,779 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 11:07:09,780 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 11:07:09,782 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 11:07:09,782 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 11:07:09,782 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 11:07:09,782 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 11:07:09,783 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 11:07:09,784 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 11:07:09,784 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 11:07:09,784 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 11:07:09,784 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 11:07:09,785 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 11:07:09,785 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 11:07:09,785 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 11:07:09,785 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 11:07:09,786 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 11:07:09,786 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 11:07:09,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 11:07:09,787 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 11:07:09,787 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 11:07:09,787 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 11:07:09,790 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 11:07:09,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 11:07:09,790 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 11:07:09,790 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 11:07:09,790 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 11:07:09,791 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 11:07:09,791 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 -> a93c350e5795e32421c3bef9d7525c3fd53f570f971d574def19132b3d6f08b8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Encode 'modifies' clause in 'ensures' clause of contracts -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-25 11:07:10,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 11:07:10,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 11:07:10,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 11:07:10,116 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 11:07:10,117 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 11:07:10,118 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c [2024-09-25 11:07:11,681 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 11:07:11,840 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 11:07:11,840 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c [2024-09-25 11:07:11,847 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/2f2e7932b/58fb6521dc5d4f64a0b6fa25f935cc0c/FLAG33eae0b79 [2024-09-25 11:07:12,248 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/2f2e7932b/58fb6521dc5d4f64a0b6fa25f935cc0c [2024-09-25 11:07:12,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 11:07:12,251 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 11:07:12,252 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 11:07:12,252 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 11:07:12,257 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 11:07:12,258 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:07:12" (1/1) ... [2024-09-25 11:07:12,258 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33a1668c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:12, skipping insertion in model container [2024-09-25 11:07:12,258 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:07:12" (1/1) ... [2024-09-25 11:07:12,278 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 11:07:12,430 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c[538,551] [2024-09-25 11:07:12,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 11:07:12,463 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 11:07:12,473 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c[538,551] [2024-09-25 11:07:12,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 11:07:12,506 INFO L204 MainTranslator]: Completed translation [2024-09-25 11:07:12,507 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:12 WrapperNode [2024-09-25 11:07:12,507 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 11:07:12,508 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 11:07:12,508 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 11:07:12,508 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 11:07:12,514 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:12" (1/1) ... [2024-09-25 11:07:12,524 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:12" (1/1) ... [2024-09-25 11:07:12,542 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 11:07:12,542 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 11:07:12,543 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 11:07:12,543 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 11:07:12,543 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 11:07:12,556 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:12" (1/1) ... [2024-09-25 11:07:12,556 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:12" (1/1) ... [2024-09-25 11:07:12,557 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:12" (1/1) ... [2024-09-25 11:07:12,567 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-25 11:07:12,568 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:12" (1/1) ... [2024-09-25 11:07:12,568 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:12" (1/1) ... [2024-09-25 11:07:12,571 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:12" (1/1) ... [2024-09-25 11:07:12,576 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:12" (1/1) ... [2024-09-25 11:07:12,577 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:12" (1/1) ... [2024-09-25 11:07:12,577 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:12" (1/1) ... [2024-09-25 11:07:12,579 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 11:07:12,584 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 11:07:12,585 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 11:07:12,585 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 11:07:12,586 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:12" (1/1) ... [2024-09-25 11:07:12,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 11:07:12,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:07:12,615 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-25 11:07:12,623 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-25 11:07:12,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 11:07:12,662 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-25 11:07:12,662 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-25 11:07:12,663 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 11:07:12,663 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 11:07:12,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 11:07:12,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 11:07:12,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 11:07:12,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 11:07:12,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 11:07:12,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-25 11:07:12,665 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-25 11:07:12,729 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 11:07:12,731 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 11:07:12,908 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-25 11:07:12,908 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 11:07:12,929 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 11:07:12,930 INFO L317 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-25 11:07:12,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:07:12 BoogieIcfgContainer [2024-09-25 11:07:12,930 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 11:07:12,932 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 11:07:12,932 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 11:07:12,935 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 11:07:12,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:07:12" (1/3) ... [2024-09-25 11:07:12,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf42353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:07:12, skipping insertion in model container [2024-09-25 11:07:12,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:12" (2/3) ... [2024-09-25 11:07:12,937 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf42353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:07:12, skipping insertion in model container [2024-09-25 11:07:12,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:07:12" (3/3) ... [2024-09-25 11:07:12,939 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound5.c [2024-09-25 11:07:12,954 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 11:07:12,954 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 11:07:13,017 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 11:07:13,024 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;@7e9a7a68, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 11:07:13,025 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 11:07:13,029 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-25 11:07:13,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-25 11:07:13,036 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:07:13,037 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:07:13,038 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:07:13,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:13,044 INFO L85 PathProgramCache]: Analyzing trace with hash 367441184, now seen corresponding path program 1 times [2024-09-25 11:07:13,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:07:13,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567897191] [2024-09-25 11:07:13,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:07:13,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:07:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:13,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:07:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:13,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:07:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:13,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 11:07:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:13,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 11:07:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:13,259 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 11:07:13,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:07:13,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567897191] [2024-09-25 11:07:13,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567897191] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 11:07:13,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 11:07:13,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-25 11:07:13,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509632379] [2024-09-25 11:07:13,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:07:13,270 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-25 11:07:13,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:07:13,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-25 11:07:13,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-25 11:07:13,299 INFO L87 Difference]: Start difference. First operand has 36 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-25 11:07:13,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:07:13,339 INFO L93 Difference]: Finished difference Result 66 states and 107 transitions. [2024-09-25 11:07:13,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-25 11:07:13,342 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2024-09-25 11:07:13,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:07:13,348 INFO L225 Difference]: With dead ends: 66 [2024-09-25 11:07:13,349 INFO L226 Difference]: Without dead ends: 32 [2024-09-25 11:07:13,353 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-25 11:07:13,357 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 11:07:13,359 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 11:07:13,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-25 11:07:13,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-25 11:07:13,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-25 11:07:13,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2024-09-25 11:07:13,403 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 27 [2024-09-25 11:07:13,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:07:13,404 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2024-09-25 11:07:13,404 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-25 11:07:13,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:13,405 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2024-09-25 11:07:13,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-25 11:07:13,408 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:07:13,408 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:07:13,408 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-25 11:07:13,409 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:07:13,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:13,409 INFO L85 PathProgramCache]: Analyzing trace with hash -781266146, now seen corresponding path program 1 times [2024-09-25 11:07:13,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:07:13,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516726228] [2024-09-25 11:07:13,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:07:13,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:07:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:13,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:07:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:13,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:07:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:13,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 11:07:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:13,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 11:07:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:13,639 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 11:07:13,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:07:13,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516726228] [2024-09-25 11:07:13,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516726228] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 11:07:13,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 11:07:13,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 11:07:13,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232934493] [2024-09-25 11:07:13,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:07:13,648 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 11:07:13,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:07:13,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 11:07:13,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 11:07:13,651 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-25 11:07:13,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:07:13,737 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2024-09-25 11:07:13,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 11:07:13,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 27 [2024-09-25 11:07:13,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:07:13,739 INFO L225 Difference]: With dead ends: 45 [2024-09-25 11:07:13,740 INFO L226 Difference]: Without dead ends: 43 [2024-09-25 11:07:13,741 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-25 11:07:13,744 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:07:13,745 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 134 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:07:13,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-25 11:07:13,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2024-09-25 11:07:13,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-25 11:07:13,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2024-09-25 11:07:13,764 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 27 [2024-09-25 11:07:13,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:07:13,765 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2024-09-25 11:07:13,765 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-25 11:07:13,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:13,766 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2024-09-25 11:07:13,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-25 11:07:13,767 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:07:13,767 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:07:13,769 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-25 11:07:13,769 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:07:13,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:13,770 INFO L85 PathProgramCache]: Analyzing trace with hash 992341126, now seen corresponding path program 1 times [2024-09-25 11:07:13,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:07:13,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145151342] [2024-09-25 11:07:13,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:07:13,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:07:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:13,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:07:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:13,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:07:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:13,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 11:07:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:13,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 11:07:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:13,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:07:13,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:13,931 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 11:07:13,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:07:13,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145151342] [2024-09-25 11:07:13,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145151342] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 11:07:13,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 11:07:13,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 11:07:13,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579798666] [2024-09-25 11:07:13,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:07:13,933 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 11:07:13,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:07:13,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 11:07:13,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 11:07:13,936 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-25 11:07:14,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:07:14,009 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2024-09-25 11:07:14,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 11:07:14,010 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2024-09-25 11:07:14,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:07:14,011 INFO L225 Difference]: With dead ends: 49 [2024-09-25 11:07:14,011 INFO L226 Difference]: Without dead ends: 47 [2024-09-25 11:07:14,012 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-25 11:07:14,012 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:07:14,013 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 131 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:07:14,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-25 11:07:14,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2024-09-25 11:07:14,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-25 11:07:14,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2024-09-25 11:07:14,022 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 32 [2024-09-25 11:07:14,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:07:14,022 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2024-09-25 11:07:14,022 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-25 11:07:14,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:14,023 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2024-09-25 11:07:14,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-25 11:07:14,024 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:07:14,024 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:07:14,024 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-25 11:07:14,024 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:07:14,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:14,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1500804130, now seen corresponding path program 1 times [2024-09-25 11:07:14,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:07:14,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000522050] [2024-09-25 11:07:14,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:07:14,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:07:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:07:14,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [122538951] [2024-09-25 11:07:14,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:07:14,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:07:14,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:07:14,060 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:07:14,061 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-25 11:07:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:14,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-25 11:07:14,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:07:14,204 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-25 11:07:14,204 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 11:07:14,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:07:14,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000522050] [2024-09-25 11:07:14,205 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 11:07:14,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122538951] [2024-09-25 11:07:14,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122538951] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 11:07:14,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 11:07:14,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 11:07:14,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122976941] [2024-09-25 11:07:14,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:07:14,206 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 11:07:14,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:07:14,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 11:07:14,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 11:07:14,208 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-25 11:07:14,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:07:14,288 INFO L93 Difference]: Finished difference Result 66 states and 85 transitions. [2024-09-25 11:07:14,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 11:07:14,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 37 [2024-09-25 11:07:14,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:07:14,290 INFO L225 Difference]: With dead ends: 66 [2024-09-25 11:07:14,292 INFO L226 Difference]: Without dead ends: 53 [2024-09-25 11:07:14,292 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-25 11:07:14,293 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 5 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:07:14,295 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 132 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:07:14,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-09-25 11:07:14,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-09-25 11:07:14,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 30 states have internal predecessors, (34), 17 states have call successors, (17), 7 states have call predecessors, (17), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-25 11:07:14,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 66 transitions. [2024-09-25 11:07:14,307 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 66 transitions. Word has length 37 [2024-09-25 11:07:14,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:07:14,307 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 66 transitions. [2024-09-25 11:07:14,308 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-25 11:07:14,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:14,308 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2024-09-25 11:07:14,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-25 11:07:14,309 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:07:14,309 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:07:14,328 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-25 11:07:14,510 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:07:14,510 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:07:14,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:14,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1357220557, now seen corresponding path program 1 times [2024-09-25 11:07:14,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:07:14,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146205591] [2024-09-25 11:07:14,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:07:14,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:07:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:07:14,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337840085] [2024-09-25 11:07:14,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:07:14,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:07:14,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:07:14,528 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:07:14,531 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-25 11:07:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:14,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-25 11:07:14,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:07:14,683 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-25 11:07:14,683 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:07:14,893 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-25 11:07:14,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:07:14,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146205591] [2024-09-25 11:07:14,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 11:07:14,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337840085] [2024-09-25 11:07:14,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337840085] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:07:14,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 11:07:14,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-09-25 11:07:14,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211750568] [2024-09-25 11:07:14,898 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 11:07:14,898 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-25 11:07:14,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:07:14,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-25 11:07:14,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-25 11:07:14,899 INFO L87 Difference]: Start difference. First operand 53 states and 66 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-25 11:07:15,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:07:15,046 INFO L93 Difference]: Finished difference Result 68 states and 86 transitions. [2024-09-25 11:07:15,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-25 11:07:15,048 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 44 [2024-09-25 11:07:15,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:07:15,050 INFO L225 Difference]: With dead ends: 68 [2024-09-25 11:07:15,050 INFO L226 Difference]: Without dead ends: 66 [2024-09-25 11:07:15,050 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-09-25 11:07:15,053 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 11 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:07:15,054 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 147 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:07:15,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-25 11:07:15,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2024-09-25 11:07:15,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 35 states have (on average 1.2) internal successors, (42), 37 states have internal predecessors, (42), 20 states have call successors, (20), 8 states have call predecessors, (20), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-25 11:07:15,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 80 transitions. [2024-09-25 11:07:15,071 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 80 transitions. Word has length 44 [2024-09-25 11:07:15,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:07:15,072 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 80 transitions. [2024-09-25 11:07:15,072 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-25 11:07:15,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:15,072 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 80 transitions. [2024-09-25 11:07:15,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-25 11:07:15,074 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:07:15,074 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:07:15,090 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-25 11:07:15,278 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:07:15,279 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:07:15,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:15,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1728018148, now seen corresponding path program 1 times [2024-09-25 11:07:15,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:07:15,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640622478] [2024-09-25 11:07:15,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:07:15,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:07:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:07:15,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [949205998] [2024-09-25 11:07:15,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:07:15,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:07:15,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:07:15,308 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:07:15,309 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-25 11:07:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:15,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-25 11:07:15,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:07:15,467 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-09-25 11:07:15,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:07:15,574 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-09-25 11:07:15,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:07:15,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640622478] [2024-09-25 11:07:15,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 11:07:15,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949205998] [2024-09-25 11:07:15,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949205998] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-25 11:07:15,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-25 11:07:15,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-25 11:07:15,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983970388] [2024-09-25 11:07:15,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:07:15,576 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 11:07:15,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:07:15,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 11:07:15,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-25 11:07:15,577 INFO L87 Difference]: Start difference. First operand 63 states and 80 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-25 11:07:15,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:07:15,647 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2024-09-25 11:07:15,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 11:07:15,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2024-09-25 11:07:15,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:07:15,649 INFO L225 Difference]: With dead ends: 73 [2024-09-25 11:07:15,649 INFO L226 Difference]: Without dead ends: 71 [2024-09-25 11:07:15,650 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-25 11:07:15,650 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 5 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 11:07:15,651 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 125 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 11:07:15,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-25 11:07:15,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2024-09-25 11:07:15,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 42 states have internal predecessors, (46), 22 states have call successors, (22), 9 states have call predecessors, (22), 8 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-25 11:07:15,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2024-09-25 11:07:15,683 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 54 [2024-09-25 11:07:15,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:07:15,684 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2024-09-25 11:07:15,684 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-25 11:07:15,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:15,685 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2024-09-25 11:07:15,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-25 11:07:15,686 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:07:15,686 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:07:15,703 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-25 11:07:15,887 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-25 11:07:15,887 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:07:15,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:15,888 INFO L85 PathProgramCache]: Analyzing trace with hash 515743006, now seen corresponding path program 1 times [2024-09-25 11:07:15,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:07:15,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727252301] [2024-09-25 11:07:15,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:07:15,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:07:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:16,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:07:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:16,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:07:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:16,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 11:07:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:16,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 11:07:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:16,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:07:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:16,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-25 11:07:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:16,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-25 11:07:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:16,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 11:07:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:16,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 11:07:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:16,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-25 11:07:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:16,056 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-09-25 11:07:16,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:07:16,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727252301] [2024-09-25 11:07:16,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727252301] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 11:07:16,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 11:07:16,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 11:07:16,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528256380] [2024-09-25 11:07:16,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:07:16,057 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 11:07:16,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:07:16,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 11:07:16,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 11:07:16,077 INFO L87 Difference]: Start difference. First operand 70 states and 88 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-09-25 11:07:16,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:07:16,140 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2024-09-25 11:07:16,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 11:07:16,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 60 [2024-09-25 11:07:16,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:07:16,141 INFO L225 Difference]: With dead ends: 78 [2024-09-25 11:07:16,141 INFO L226 Difference]: Without dead ends: 66 [2024-09-25 11:07:16,142 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-25 11:07:16,142 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 3 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 11:07:16,143 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 142 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 11:07:16,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-25 11:07:16,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-09-25 11:07:16,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 37 states have (on average 1.162162162162162) internal successors, (43), 40 states have internal predecessors, (43), 20 states have call successors, (20), 9 states have call predecessors, (20), 8 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-25 11:07:16,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2024-09-25 11:07:16,162 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 60 [2024-09-25 11:07:16,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:07:16,162 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2024-09-25 11:07:16,162 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-09-25 11:07:16,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:16,162 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2024-09-25 11:07:16,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-25 11:07:16,164 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:07:16,164 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:07:16,164 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-25 11:07:16,164 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:07:16,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:16,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1452252536, now seen corresponding path program 1 times [2024-09-25 11:07:16,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:07:16,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330016619] [2024-09-25 11:07:16,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:07:16,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:07:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:07:16,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [728069058] [2024-09-25 11:07:16,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:07:16,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:07:16,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:07:16,208 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:07:16,209 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-25 11:07:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:16,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-25 11:07:16,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:07:16,839 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-09-25 11:07:16,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:07:18,522 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-09-25 11:07:18,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:07:18,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330016619] [2024-09-25 11:07:18,523 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 11:07:18,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728069058] [2024-09-25 11:07:18,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728069058] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:07:18,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 11:07:18,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2024-09-25 11:07:18,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472495402] [2024-09-25 11:07:18,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 11:07:18,525 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-25 11:07:18,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:07:18,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-25 11:07:18,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-09-25 11:07:18,527 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 16 states have internal predecessors, (35), 9 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 8 states have call predecessors, (21), 7 states have call successors, (21) [2024-09-25 11:07:19,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:07:19,717 INFO L93 Difference]: Finished difference Result 153 states and 210 transitions. [2024-09-25 11:07:19,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-25 11:07:19,718 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 16 states have internal predecessors, (35), 9 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 8 states have call predecessors, (21), 7 states have call successors, (21) Word has length 74 [2024-09-25 11:07:19,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:07:19,721 INFO L225 Difference]: With dead ends: 153 [2024-09-25 11:07:19,723 INFO L226 Difference]: Without dead ends: 130 [2024-09-25 11:07:19,724 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2024-09-25 11:07:19,724 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 79 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-25 11:07:19,724 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 256 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-25 11:07:19,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-09-25 11:07:19,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 105. [2024-09-25 11:07:19,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 61 states have (on average 1.180327868852459) internal successors, (72), 65 states have internal predecessors, (72), 31 states have call successors, (31), 13 states have call predecessors, (31), 12 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-25 11:07:19,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 132 transitions. [2024-09-25 11:07:19,771 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 132 transitions. Word has length 74 [2024-09-25 11:07:19,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:07:19,772 INFO L474 AbstractCegarLoop]: Abstraction has 105 states and 132 transitions. [2024-09-25 11:07:19,772 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 16 states have internal predecessors, (35), 9 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 8 states have call predecessors, (21), 7 states have call successors, (21) [2024-09-25 11:07:19,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:19,772 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 132 transitions. [2024-09-25 11:07:19,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-25 11:07:19,774 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:07:19,774 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:07:19,791 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-25 11:07:19,974 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:07:19,975 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:07:19,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:19,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1571705391, now seen corresponding path program 1 times [2024-09-25 11:07:19,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:07:19,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798302867] [2024-09-25 11:07:19,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:07:19,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:07:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:07:20,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [741957261] [2024-09-25 11:07:20,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:07:20,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:07:20,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:07:20,003 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:07:20,005 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-25 11:07:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:20,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-25 11:07:20,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:07:20,536 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 26 proven. 9 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-09-25 11:07:20,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:07:21,151 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-09-25 11:07:21,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:07:21,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798302867] [2024-09-25 11:07:21,152 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 11:07:21,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741957261] [2024-09-25 11:07:21,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741957261] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:07:21,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 11:07:21,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2024-09-25 11:07:21,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463567964] [2024-09-25 11:07:21,152 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 11:07:21,153 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-25 11:07:21,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:07:21,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-25 11:07:21,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2024-09-25 11:07:21,154 INFO L87 Difference]: Start difference. First operand 105 states and 132 transitions. Second operand has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 11 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 10 states have call predecessors, (25), 9 states have call successors, (25) [2024-09-25 11:07:21,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:07:21,676 INFO L93 Difference]: Finished difference Result 145 states and 180 transitions. [2024-09-25 11:07:21,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-25 11:07:21,676 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 11 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 10 states have call predecessors, (25), 9 states have call successors, (25) Word has length 85 [2024-09-25 11:07:21,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:07:21,678 INFO L225 Difference]: With dead ends: 145 [2024-09-25 11:07:21,678 INFO L226 Difference]: Without dead ends: 111 [2024-09-25 11:07:21,679 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2024-09-25 11:07:21,679 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 25 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 11:07:21,679 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 414 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 11:07:21,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-09-25 11:07:21,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 97. [2024-09-25 11:07:21,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 59 states have internal predecessors, (66), 27 states have call successors, (27), 13 states have call predecessors, (27), 12 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-25 11:07:21,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 118 transitions. [2024-09-25 11:07:21,716 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 118 transitions. Word has length 85 [2024-09-25 11:07:21,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:07:21,717 INFO L474 AbstractCegarLoop]: Abstraction has 97 states and 118 transitions. [2024-09-25 11:07:21,717 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 11 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 10 states have call predecessors, (25), 9 states have call successors, (25) [2024-09-25 11:07:21,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:21,718 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 118 transitions. [2024-09-25 11:07:21,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-09-25 11:07:21,721 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:07:21,721 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:07:21,739 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-25 11:07:21,925 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:07:21,926 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:07:21,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:21,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1973508941, now seen corresponding path program 2 times [2024-09-25 11:07:21,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:07:21,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802237796] [2024-09-25 11:07:21,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:07:21,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:07:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:07:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:07:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 11:07:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 11:07:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:07:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-25 11:07:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-25 11:07:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 11:07:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 11:07:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 11:07:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-25 11:07:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-25 11:07:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-25 11:07:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-25 11:07:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-09-25 11:07:22,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:07:22,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802237796] [2024-09-25 11:07:22,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802237796] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:07:22,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404143321] [2024-09-25 11:07:22,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 11:07:22,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:07:22,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:07:22,147 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:07:22,148 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-25 11:07:22,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 11:07:22,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:07:22,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-25 11:07:22,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:07:22,236 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-09-25 11:07:22,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:07:22,341 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-09-25 11:07:22,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404143321] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:07:22,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:07:22,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-09-25 11:07:22,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117061882] [2024-09-25 11:07:22,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:07:22,343 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 11:07:22,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:07:22,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 11:07:22,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-25 11:07:22,344 INFO L87 Difference]: Start difference. First operand 97 states and 118 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2024-09-25 11:07:22,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:07:22,412 INFO L93 Difference]: Finished difference Result 124 states and 155 transitions. [2024-09-25 11:07:22,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-25 11:07:22,413 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 87 [2024-09-25 11:07:22,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:07:22,414 INFO L225 Difference]: With dead ends: 124 [2024-09-25 11:07:22,414 INFO L226 Difference]: Without dead ends: 102 [2024-09-25 11:07:22,415 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-25 11:07:22,416 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 11:07:22,416 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 11:07:22,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-09-25 11:07:22,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-09-25 11:07:22,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 60 states have (on average 1.15) internal successors, (69), 62 states have internal predecessors, (69), 29 states have call successors, (29), 13 states have call predecessors, (29), 12 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-25 11:07:22,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 125 transitions. [2024-09-25 11:07:22,447 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 125 transitions. Word has length 87 [2024-09-25 11:07:22,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:07:22,448 INFO L474 AbstractCegarLoop]: Abstraction has 102 states and 125 transitions. [2024-09-25 11:07:22,448 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2024-09-25 11:07:22,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:22,449 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 125 transitions. [2024-09-25 11:07:22,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-09-25 11:07:22,449 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:07:22,450 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:07:22,466 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-25 11:07:22,650 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-25 11:07:22,651 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:07:22,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:22,651 INFO L85 PathProgramCache]: Analyzing trace with hash -637517709, now seen corresponding path program 1 times [2024-09-25 11:07:22,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:07:22,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184311950] [2024-09-25 11:07:22,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:07:22,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:07:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:07:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:07:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 11:07:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 11:07:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:07:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-25 11:07:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-25 11:07:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 11:07:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 11:07:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 11:07:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-25 11:07:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-25 11:07:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-25 11:07:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-25 11:07:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:22,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-25 11:07:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:23,003 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-09-25 11:07:23,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:07:23,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184311950] [2024-09-25 11:07:23,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184311950] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:07:23,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612151287] [2024-09-25 11:07:23,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:07:23,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:07:23,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:07:23,006 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:07:23,009 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-25 11:07:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:23,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-25 11:07:23,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:07:23,349 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 28 proven. 9 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-09-25 11:07:23,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:07:23,700 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-09-25 11:07:23,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612151287] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:07:23,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:07:23,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 8] total 18 [2024-09-25 11:07:23,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104949525] [2024-09-25 11:07:23,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:07:23,703 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-25 11:07:23,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:07:23,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-25 11:07:23,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-09-25 11:07:23,704 INFO L87 Difference]: Start difference. First operand 102 states and 125 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 15 states have internal predecessors, (43), 10 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (33), 11 states have call predecessors, (33), 10 states have call successors, (33) [2024-09-25 11:07:24,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:07:24,000 INFO L93 Difference]: Finished difference Result 117 states and 145 transitions. [2024-09-25 11:07:24,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-25 11:07:24,001 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 15 states have internal predecessors, (43), 10 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (33), 11 states have call predecessors, (33), 10 states have call successors, (33) Word has length 90 [2024-09-25 11:07:24,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:07:24,002 INFO L225 Difference]: With dead ends: 117 [2024-09-25 11:07:24,002 INFO L226 Difference]: Without dead ends: 100 [2024-09-25 11:07:24,003 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 200 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-09-25 11:07:24,004 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 27 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 11:07:24,004 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 384 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 11:07:24,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-09-25 11:07:24,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 93. [2024-09-25 11:07:24,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 57 states have internal predecessors, (63), 25 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-25 11:07:24,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 111 transitions. [2024-09-25 11:07:24,036 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 111 transitions. Word has length 90 [2024-09-25 11:07:24,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:07:24,036 INFO L474 AbstractCegarLoop]: Abstraction has 93 states and 111 transitions. [2024-09-25 11:07:24,037 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 15 states have internal predecessors, (43), 10 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (33), 11 states have call predecessors, (33), 10 states have call successors, (33) [2024-09-25 11:07:24,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:24,037 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 111 transitions. [2024-09-25 11:07:24,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-09-25 11:07:24,039 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:07:24,039 INFO L216 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:07:24,061 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-25 11:07:24,239 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:07:24,240 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:07:24,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:24,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1204328542, now seen corresponding path program 1 times [2024-09-25 11:07:24,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:07:24,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860088726] [2024-09-25 11:07:24,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:07:24,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:07:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:24,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:07:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:24,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:07:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:24,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 11:07:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:24,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 11:07:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:24,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:07:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:24,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-25 11:07:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:24,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-25 11:07:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:24,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 11:07:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:24,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 11:07:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:24,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 11:07:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:24,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-25 11:07:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:24,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-25 11:07:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:24,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-25 11:07:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:24,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-25 11:07:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:24,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-25 11:07:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:24,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-25 11:07:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:24,351 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-25 11:07:24,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:07:24,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860088726] [2024-09-25 11:07:24,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860088726] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:07:24,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68207527] [2024-09-25 11:07:24,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:07:24,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:07:24,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:07:24,354 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:07:24,356 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-25 11:07:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:24,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-25 11:07:24,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:07:24,446 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2024-09-25 11:07:24,447 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 11:07:24,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68207527] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 11:07:24,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-25 11:07:24,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-09-25 11:07:24,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691141804] [2024-09-25 11:07:24,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:07:24,448 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 11:07:24,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:07:24,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 11:07:24,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-09-25 11:07:24,450 INFO L87 Difference]: Start difference. First operand 93 states and 111 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2024-09-25 11:07:24,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:07:24,516 INFO L93 Difference]: Finished difference Result 100 states and 117 transitions. [2024-09-25 11:07:24,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 11:07:24,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 94 [2024-09-25 11:07:24,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:07:24,517 INFO L225 Difference]: With dead ends: 100 [2024-09-25 11:07:24,517 INFO L226 Difference]: Without dead ends: 88 [2024-09-25 11:07:24,517 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-09-25 11:07:24,518 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 7 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 11:07:24,518 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 122 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 11:07:24,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-25 11:07:24,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-09-25 11:07:24,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 53 states have internal predecessors, (58), 24 states have call successors, (24), 12 states have call predecessors, (24), 11 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-25 11:07:24,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 104 transitions. [2024-09-25 11:07:24,552 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 104 transitions. Word has length 94 [2024-09-25 11:07:24,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:07:24,553 INFO L474 AbstractCegarLoop]: Abstraction has 88 states and 104 transitions. [2024-09-25 11:07:24,553 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2024-09-25 11:07:24,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:24,553 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 104 transitions. [2024-09-25 11:07:24,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-25 11:07:24,554 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:07:24,555 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:07:24,573 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-25 11:07:24,755 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:07:24,756 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:07:24,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:24,756 INFO L85 PathProgramCache]: Analyzing trace with hash -588826413, now seen corresponding path program 3 times [2024-09-25 11:07:24,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:07:24,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425710992] [2024-09-25 11:07:24,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:07:24,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:07:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:07:24,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574507402] [2024-09-25 11:07:24,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 11:07:24,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:07:24,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:07:24,821 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:07:24,822 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-25 11:07:24,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-25 11:07:24,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:07:24,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-25 11:07:24,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:07:25,366 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 37 proven. 49 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-09-25 11:07:25,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:07:37,771 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 37 proven. 49 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-09-25 11:07:37,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:07:37,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425710992] [2024-09-25 11:07:37,772 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 11:07:37,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574507402] [2024-09-25 11:07:37,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574507402] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:07:37,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 11:07:37,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2024-09-25 11:07:37,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368375037] [2024-09-25 11:07:37,773 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 11:07:37,773 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-25 11:07:37,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:07:37,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-25 11:07:37,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-09-25 11:07:37,774 INFO L87 Difference]: Start difference. First operand 88 states and 104 transitions. Second operand has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 12 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) [2024-09-25 11:07:43,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:07:43,849 INFO L93 Difference]: Finished difference Result 162 states and 209 transitions. [2024-09-25 11:07:43,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-25 11:07:43,850 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 12 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) Word has length 104 [2024-09-25 11:07:43,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:07:43,852 INFO L225 Difference]: With dead ends: 162 [2024-09-25 11:07:43,852 INFO L226 Difference]: Without dead ends: 140 [2024-09-25 11:07:43,853 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2024-09-25 11:07:43,853 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 52 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-09-25 11:07:43,853 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 433 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-09-25 11:07:43,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-09-25 11:07:43,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 128. [2024-09-25 11:07:43,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 75 states have (on average 1.12) internal successors, (84), 79 states have internal predecessors, (84), 38 states have call successors, (38), 15 states have call predecessors, (38), 14 states have return successors, (36), 33 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-25 11:07:43,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 158 transitions. [2024-09-25 11:07:43,909 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 158 transitions. Word has length 104 [2024-09-25 11:07:43,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:07:43,910 INFO L474 AbstractCegarLoop]: Abstraction has 128 states and 158 transitions. [2024-09-25 11:07:43,910 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 12 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) [2024-09-25 11:07:43,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:43,910 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 158 transitions. [2024-09-25 11:07:43,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-09-25 11:07:43,911 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:07:43,912 INFO L216 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:07:43,919 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-25 11:07:44,112 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-25 11:07:44,112 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:07:44,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:44,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1973122394, now seen corresponding path program 2 times [2024-09-25 11:07:44,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:07:44,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955186943] [2024-09-25 11:07:44,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:07:44,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:07:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:07:44,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754244754] [2024-09-25 11:07:44,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 11:07:44,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:07:44,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:07:44,145 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:07:44,151 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-25 11:07:44,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 11:07:44,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:07:44,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-25 11:07:44,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:07:44,350 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 124 proven. 22 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2024-09-25 11:07:44,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:07:44,557 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-09-25 11:07:44,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:07:44,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955186943] [2024-09-25 11:07:44,558 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 11:07:44,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754244754] [2024-09-25 11:07:44,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754244754] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:07:44,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 11:07:44,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 14 [2024-09-25 11:07:44,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262841621] [2024-09-25 11:07:44,559 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 11:07:44,559 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-25 11:07:44,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:07:44,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-25 11:07:44,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-09-25 11:07:44,561 INFO L87 Difference]: Start difference. First operand 128 states and 158 transitions. Second operand has 14 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2024-09-25 11:07:45,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:07:45,075 INFO L93 Difference]: Finished difference Result 142 states and 169 transitions. [2024-09-25 11:07:45,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-25 11:07:45,076 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) Word has length 115 [2024-09-25 11:07:45,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:07:45,077 INFO L225 Difference]: With dead ends: 142 [2024-09-25 11:07:45,077 INFO L226 Difference]: Without dead ends: 140 [2024-09-25 11:07:45,077 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2024-09-25 11:07:45,078 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 29 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 11:07:45,078 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 216 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 11:07:45,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-09-25 11:07:45,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2024-09-25 11:07:45,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 84 states have (on average 1.1071428571428572) internal successors, (93), 88 states have internal predecessors, (93), 38 states have call successors, (38), 18 states have call predecessors, (38), 17 states have return successors, (36), 33 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-25 11:07:45,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 167 transitions. [2024-09-25 11:07:45,128 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 167 transitions. Word has length 115 [2024-09-25 11:07:45,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:07:45,128 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 167 transitions. [2024-09-25 11:07:45,129 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2024-09-25 11:07:45,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:45,129 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 167 transitions. [2024-09-25 11:07:45,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-09-25 11:07:45,130 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:07:45,130 INFO L216 NwaCegarLoop]: trace histogram [16, 15, 15, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:07:45,145 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-25 11:07:45,331 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-25 11:07:45,331 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:07:45,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:45,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1536141598, now seen corresponding path program 4 times [2024-09-25 11:07:45,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:07:45,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800703135] [2024-09-25 11:07:45,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:07:45,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:07:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:45,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:07:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:45,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:07:45,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:45,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 11:07:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:45,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 11:07:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:45,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:07:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:45,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-25 11:07:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:45,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-25 11:07:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:45,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 11:07:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:45,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 11:07:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:45,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 11:07:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:45,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-25 11:07:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:45,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-25 11:07:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:45,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-25 11:07:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:45,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-25 11:07:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:45,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-25 11:07:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:45,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-25 11:07:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:45,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-25 11:07:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:45,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-25 11:07:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:45,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-25 11:07:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:45,643 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 38 proven. 28 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2024-09-25 11:07:45,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:07:45,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800703135] [2024-09-25 11:07:45,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800703135] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:07:45,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112873486] [2024-09-25 11:07:45,644 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 11:07:45,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:07:45,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:07:45,646 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:07:45,648 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-25 11:07:45,715 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 11:07:45,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:07:45,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-25 11:07:45,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:07:45,756 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 38 proven. 28 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2024-09-25 11:07:45,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:07:45,897 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 38 proven. 28 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2024-09-25 11:07:45,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112873486] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:07:45,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:07:45,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-09-25 11:07:45,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611323761] [2024-09-25 11:07:45,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:07:45,898 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-25 11:07:45,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:07:45,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-25 11:07:45,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-25 11:07:45,899 INFO L87 Difference]: Start difference. First operand 140 states and 167 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 7 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2024-09-25 11:07:46,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:07:46,017 INFO L93 Difference]: Finished difference Result 167 states and 200 transitions. [2024-09-25 11:07:46,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 11:07:46,017 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 7 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) Word has length 117 [2024-09-25 11:07:46,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:07:46,019 INFO L225 Difference]: With dead ends: 167 [2024-09-25 11:07:46,019 INFO L226 Difference]: Without dead ends: 144 [2024-09-25 11:07:46,019 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-25 11:07:46,020 INFO L434 NwaCegarLoop]: 61 mSDtfsCounter, 1 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:07:46,020 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 273 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:07:46,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-25 11:07:46,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2024-09-25 11:07:46,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 85 states have (on average 1.1058823529411765) internal successors, (94), 90 states have internal predecessors, (94), 39 states have call successors, (39), 18 states have call predecessors, (39), 17 states have return successors, (37), 33 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-25 11:07:46,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 170 transitions. [2024-09-25 11:07:46,072 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 170 transitions. Word has length 117 [2024-09-25 11:07:46,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:07:46,072 INFO L474 AbstractCegarLoop]: Abstraction has 142 states and 170 transitions. [2024-09-25 11:07:46,072 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 7 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2024-09-25 11:07:46,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:46,073 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 170 transitions. [2024-09-25 11:07:46,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-25 11:07:46,074 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:07:46,074 INFO L216 NwaCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:07:46,087 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-25 11:07:46,275 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-25 11:07:46,275 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:07:46,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:46,275 INFO L85 PathProgramCache]: Analyzing trace with hash 47128766, now seen corresponding path program 2 times [2024-09-25 11:07:46,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:07:46,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928850342] [2024-09-25 11:07:46,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:07:46,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:07:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:46,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:07:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:46,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:07:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:46,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 11:07:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:46,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 11:07:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:46,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:07:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:46,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-25 11:07:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:46,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-25 11:07:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:46,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 11:07:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:46,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 11:07:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:46,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 11:07:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:46,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-25 11:07:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:46,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-25 11:07:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:46,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-25 11:07:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:46,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-25 11:07:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:46,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-25 11:07:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:46,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-25 11:07:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:46,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-25 11:07:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:46,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-25 11:07:46,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:46,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-25 11:07:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:46,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-25 11:07:46,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:46,757 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2024-09-25 11:07:46,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:07:46,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928850342] [2024-09-25 11:07:46,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928850342] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:07:46,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663613615] [2024-09-25 11:07:46,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 11:07:46,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:07:46,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:07:46,760 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:07:46,762 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-25 11:07:46,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 11:07:46,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:07:46,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-25 11:07:46,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:07:47,378 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2024-09-25 11:07:47,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:07:48,278 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2024-09-25 11:07:48,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663613615] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:07:48,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:07:48,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 14] total 30 [2024-09-25 11:07:48,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172709827] [2024-09-25 11:07:48,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:07:48,279 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-25 11:07:48,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:07:48,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-25 11:07:48,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2024-09-25 11:07:48,280 INFO L87 Difference]: Start difference. First operand 142 states and 170 transitions. Second operand has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 27 states have internal predecessors, (62), 19 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 19 states have call predecessors, (49), 19 states have call successors, (49) [2024-09-25 11:07:48,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:07:48,847 INFO L93 Difference]: Finished difference Result 158 states and 191 transitions. [2024-09-25 11:07:48,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-25 11:07:48,848 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 27 states have internal predecessors, (62), 19 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 19 states have call predecessors, (49), 19 states have call successors, (49) Word has length 120 [2024-09-25 11:07:48,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:07:48,849 INFO L225 Difference]: With dead ends: 158 [2024-09-25 11:07:48,849 INFO L226 Difference]: Without dead ends: 130 [2024-09-25 11:07:48,850 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=214, Invalid=1192, Unknown=0, NotChecked=0, Total=1406 [2024-09-25 11:07:48,851 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 23 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 11:07:48,851 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 530 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 11:07:48,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-09-25 11:07:48,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2024-09-25 11:07:48,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 76 states have (on average 1.0921052631578947) internal successors, (83), 80 states have internal predecessors, (83), 32 states have call successors, (32), 18 states have call predecessors, (32), 17 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-25 11:07:48,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 145 transitions. [2024-09-25 11:07:48,885 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 145 transitions. Word has length 120 [2024-09-25 11:07:48,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:07:48,886 INFO L474 AbstractCegarLoop]: Abstraction has 126 states and 145 transitions. [2024-09-25 11:07:48,886 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 27 states have internal predecessors, (62), 19 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 19 states have call predecessors, (49), 19 states have call successors, (49) [2024-09-25 11:07:48,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:48,886 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 145 transitions. [2024-09-25 11:07:48,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-09-25 11:07:48,887 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:07:48,887 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:07:48,904 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-25 11:07:49,088 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-25 11:07:49,088 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:07:49,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:49,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1414642200, now seen corresponding path program 5 times [2024-09-25 11:07:49,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:07:49,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119113406] [2024-09-25 11:07:49,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:07:49,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:07:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:49,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:07:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:49,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:07:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:49,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 11:07:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:49,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 11:07:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:49,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:07:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:49,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-25 11:07:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:49,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-25 11:07:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:49,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 11:07:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:49,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 11:07:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:49,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 11:07:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:49,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-25 11:07:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:49,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-25 11:07:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:49,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-25 11:07:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:49,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-25 11:07:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:49,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-25 11:07:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:49,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-25 11:07:49,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:49,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-25 11:07:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:49,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-25 11:07:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:49,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-25 11:07:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:49,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-25 11:07:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:49,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-25 11:07:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:49,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-25 11:07:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:49,958 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 42 proven. 51 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2024-09-25 11:07:49,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:07:49,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119113406] [2024-09-25 11:07:49,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119113406] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:07:49,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690016567] [2024-09-25 11:07:49,959 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 11:07:49,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:07:49,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:07:49,961 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:07:49,962 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-25 11:07:50,062 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-09-25 11:07:50,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:07:50,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-25 11:07:50,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:07:50,719 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 189 proven. 26 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-09-25 11:07:50,719 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:07:51,859 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 47 proven. 46 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2024-09-25 11:07:51,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690016567] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:07:51,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:07:51,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 15] total 35 [2024-09-25 11:07:51,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225779874] [2024-09-25 11:07:51,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:07:51,860 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-25 11:07:51,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:07:51,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-25 11:07:51,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=986, Unknown=0, NotChecked=0, Total=1190 [2024-09-25 11:07:51,862 INFO L87 Difference]: Start difference. First operand 126 states and 145 transitions. Second operand has 35 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 35 states have internal predecessors, (74), 24 states have call successors, (61), 2 states have call predecessors, (61), 3 states have return successors, (61), 24 states have call predecessors, (61), 24 states have call successors, (61) [2024-09-25 11:07:53,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:07:53,172 INFO L93 Difference]: Finished difference Result 174 states and 210 transitions. [2024-09-25 11:07:53,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-25 11:07:53,172 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 35 states have internal predecessors, (74), 24 states have call successors, (61), 2 states have call predecessors, (61), 3 states have return successors, (61), 24 states have call predecessors, (61), 24 states have call successors, (61) Word has length 134 [2024-09-25 11:07:53,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:07:53,174 INFO L225 Difference]: With dead ends: 174 [2024-09-25 11:07:53,174 INFO L226 Difference]: Without dead ends: 144 [2024-09-25 11:07:53,175 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=443, Invalid=1813, Unknown=0, NotChecked=0, Total=2256 [2024-09-25 11:07:53,175 INFO L434 NwaCegarLoop]: 62 mSDtfsCounter, 88 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-25 11:07:53,176 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 480 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-25 11:07:53,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-25 11:07:53,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 123. [2024-09-25 11:07:53,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 75 states have (on average 1.08) internal successors, (81), 78 states have internal predecessors, (81), 30 states have call successors, (30), 18 states have call predecessors, (30), 17 states have return successors, (28), 26 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-25 11:07:53,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 139 transitions. [2024-09-25 11:07:53,221 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 139 transitions. Word has length 134 [2024-09-25 11:07:53,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:07:53,222 INFO L474 AbstractCegarLoop]: Abstraction has 123 states and 139 transitions. [2024-09-25 11:07:53,222 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 35 states have internal predecessors, (74), 24 states have call successors, (61), 2 states have call predecessors, (61), 3 states have return successors, (61), 24 states have call predecessors, (61), 24 states have call successors, (61) [2024-09-25 11:07:53,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:53,222 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 139 transitions. [2024-09-25 11:07:53,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-09-25 11:07:53,223 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:07:53,223 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:07:53,239 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-25 11:07:53,427 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-25 11:07:53,428 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:07:53,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:07:53,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1191381354, now seen corresponding path program 1 times [2024-09-25 11:07:53,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:07:53,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331706392] [2024-09-25 11:07:53,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:07:53,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:07:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:07:53,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [702015451] [2024-09-25 11:07:53,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:07:53,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:07:53,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:07:53,460 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:07:53,462 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-25 11:07:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:07:53,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-09-25 11:07:53,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:07:54,557 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 35 proven. 109 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2024-09-25 11:07:54,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:08:27,182 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 35 proven. 103 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2024-09-25 11:08:27,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:08:27,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331706392] [2024-09-25 11:08:27,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 11:08:27,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702015451] [2024-09-25 11:08:27,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702015451] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:08:27,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 11:08:27,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 31 [2024-09-25 11:08:27,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525985723] [2024-09-25 11:08:27,183 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 11:08:27,184 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-25 11:08:27,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:08:27,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-25 11:08:27,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2024-09-25 11:08:27,185 INFO L87 Difference]: Start difference. First operand 123 states and 139 transitions. Second operand has 31 states, 31 states have (on average 1.967741935483871) internal successors, (61), 29 states have internal predecessors, (61), 18 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (43), 15 states have call predecessors, (43), 16 states have call successors, (43) [2024-09-25 11:08:46,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:08:46,078 INFO L93 Difference]: Finished difference Result 239 states and 298 transitions. [2024-09-25 11:08:46,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-25 11:08:46,078 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.967741935483871) internal successors, (61), 29 states have internal predecessors, (61), 18 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (43), 15 states have call predecessors, (43), 16 states have call successors, (43) Word has length 134 [2024-09-25 11:08:46,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:08:46,080 INFO L225 Difference]: With dead ends: 239 [2024-09-25 11:08:46,080 INFO L226 Difference]: Without dead ends: 207 [2024-09-25 11:08:46,080 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=512, Invalid=1840, Unknown=0, NotChecked=0, Total=2352 [2024-09-25 11:08:46,081 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 101 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:08:46,081 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 680 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-09-25 11:08:46,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-09-25 11:08:46,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 197. [2024-09-25 11:08:46,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 122 states have (on average 1.1475409836065573) internal successors, (140), 126 states have internal predecessors, (140), 51 states have call successors, (51), 24 states have call predecessors, (51), 23 states have return successors, (49), 46 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-25 11:08:46,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 240 transitions. [2024-09-25 11:08:46,186 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 240 transitions. Word has length 134 [2024-09-25 11:08:46,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:08:46,186 INFO L474 AbstractCegarLoop]: Abstraction has 197 states and 240 transitions. [2024-09-25 11:08:46,187 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.967741935483871) internal successors, (61), 29 states have internal predecessors, (61), 18 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (43), 15 states have call predecessors, (43), 16 states have call successors, (43) [2024-09-25 11:08:46,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:08:46,187 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 240 transitions. [2024-09-25 11:08:46,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-09-25 11:08:46,188 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:08:46,188 INFO L216 NwaCegarLoop]: trace histogram [20, 19, 19, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:08:46,202 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-25 11:08:46,388 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-25 11:08:46,388 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:08:46,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:08:46,389 INFO L85 PathProgramCache]: Analyzing trace with hash -909439750, now seen corresponding path program 2 times [2024-09-25 11:08:46,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:08:46,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908073424] [2024-09-25 11:08:46,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:08:46,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:08:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:08:46,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150296154] [2024-09-25 11:08:46,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 11:08:46,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:08:46,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:08:46,426 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:08:46,427 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-25 11:08:46,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 11:08:46,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:08:46,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-09-25 11:08:46,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:08:47,188 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 67 proven. 85 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2024-09-25 11:08:47,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:09:03,557 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 98 proven. 117 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2024-09-25 11:09:03,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:09:03,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908073424] [2024-09-25 11:09:03,558 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 11:09:03,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150296154] [2024-09-25 11:09:03,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150296154] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:09:03,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 11:09:03,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17] total 34 [2024-09-25 11:09:03,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945064707] [2024-09-25 11:09:03,558 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 11:09:03,559 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-25 11:09:03,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:09:03,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-25 11:09:03,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=908, Unknown=1, NotChecked=0, Total=1122 [2024-09-25 11:09:03,560 INFO L87 Difference]: Start difference. First operand 197 states and 240 transitions. Second operand has 34 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 31 states have internal predecessors, (64), 20 states have call successors, (47), 4 states have call predecessors, (47), 4 states have return successors, (45), 19 states have call predecessors, (45), 20 states have call successors, (45) [2024-09-25 11:09:03,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:09:03,726 INFO L93 Difference]: Finished difference Result 197 states and 240 transitions. [2024-09-25 11:09:03,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-25 11:09:03,727 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 31 states have internal predecessors, (64), 20 states have call successors, (47), 4 states have call predecessors, (47), 4 states have return successors, (45), 19 states have call predecessors, (45), 20 states have call successors, (45) Word has length 139 [2024-09-25 11:09:03,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:09:03,728 INFO L225 Difference]: With dead ends: 197 [2024-09-25 11:09:03,728 INFO L226 Difference]: Without dead ends: 0 [2024-09-25 11:09:03,729 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 244 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=213, Invalid=908, Unknown=1, NotChecked=0, Total=1122 [2024-09-25 11:09:03,729 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 11:09:03,730 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 104 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 11:09:03,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-25 11:09:03,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-25 11:09:03,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-25 11:09:03,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-25 11:09:03,731 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 139 [2024-09-25 11:09:03,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:09:03,731 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-25 11:09:03,731 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 31 states have internal predecessors, (64), 20 states have call successors, (47), 4 states have call predecessors, (47), 4 states have return successors, (45), 19 states have call predecessors, (45), 20 states have call successors, (45) [2024-09-25 11:09:03,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:09:03,732 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-25 11:09:03,732 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-25 11:09:03,734 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-25 11:09:03,753 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-25 11:09:03,938 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:09:03,942 INFO L408 BasicCegarLoop]: Path program histogram: [5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:09:03,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-25 11:09:05,881 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-25 11:09:05,905 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:09:05,906 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:09:05,906 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:09:05,906 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:09:05,906 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:09:05,906 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:09:05,907 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:09:05,907 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:09:05,907 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:09:05,908 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:09:05,908 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:09:05,908 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:09:05,908 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:09:05,908 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:09:05,908 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:09:05,909 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:09:05,909 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:09:05,909 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:09:05,909 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:09:05,910 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:09:05,910 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:09:05,910 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:09:05,910 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:09:05,910 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:09:05,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:09:05 BoogieIcfgContainer [2024-09-25 11:09:05,910 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-25 11:09:05,911 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-25 11:09:05,911 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-25 11:09:05,911 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-25 11:09:05,911 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:07:12" (3/4) ... [2024-09-25 11:09:05,915 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-25 11:09:05,968 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-25 11:09:05,968 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-25 11:09:05,968 INFO L158 Benchmark]: Toolchain (without parser) took 113716.92ms. Allocated memory was 73.4MB in the beginning and 234.9MB in the end (delta: 161.5MB). Free memory was 44.9MB in the beginning and 95.0MB in the end (delta: -50.1MB). Peak memory consumption was 112.2MB. Max. memory is 16.1GB. [2024-09-25 11:09:05,968 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 46.1MB. Free memory is still 24.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 11:09:05,968 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.14ms. Allocated memory is still 73.4MB. Free memory was 44.7MB in the beginning and 32.9MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-25 11:09:05,969 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.11ms. Allocated memory is still 73.4MB. Free memory was 32.9MB in the beginning and 53.9MB in the end (delta: -21.0MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. [2024-09-25 11:09:05,969 INFO L158 Benchmark]: Boogie Preprocessor took 36.17ms. Allocated memory is still 73.4MB. Free memory was 53.9MB in the beginning and 52.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 11:09:05,969 INFO L158 Benchmark]: RCFGBuilder took 346.86ms. Allocated memory is still 73.4MB. Free memory was 52.2MB in the beginning and 38.6MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-25 11:09:05,969 INFO L158 Benchmark]: TraceAbstraction took 112978.32ms. Allocated memory was 73.4MB in the beginning and 234.9MB in the end (delta: 161.5MB). Free memory was 38.0MB in the beginning and 97.1MB in the end (delta: -59.1MB). Peak memory consumption was 134.5MB. Max. memory is 16.1GB. [2024-09-25 11:09:05,970 INFO L158 Benchmark]: Witness Printer took 56.95ms. Allocated memory is still 234.9MB. Free memory was 97.1MB in the beginning and 95.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 11:09:05,971 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 46.1MB. Free memory is still 24.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 255.14ms. Allocated memory is still 73.4MB. Free memory was 44.7MB in the beginning and 32.9MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.11ms. Allocated memory is still 73.4MB. Free memory was 32.9MB in the beginning and 53.9MB in the end (delta: -21.0MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.17ms. Allocated memory is still 73.4MB. Free memory was 53.9MB in the beginning and 52.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 346.86ms. Allocated memory is still 73.4MB. Free memory was 52.2MB in the beginning and 38.6MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 112978.32ms. Allocated memory was 73.4MB in the beginning and 234.9MB in the end (delta: 161.5MB). Free memory was 38.0MB in the beginning and 97.1MB in the end (delta: -59.1MB). Peak memory consumption was 134.5MB. Max. memory is 16.1GB. * Witness Printer took 56.95ms. Allocated memory is still 234.9MB. Free memory was 97.1MB in the beginning and 95.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 110.9s, OverallIterations: 19, TraceHistogramMax: 20, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 30.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 525 SdHoareTripleChecker+Valid, 10.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 474 mSDsluCounter, 4867 SdHoareTripleChecker+Invalid, 10.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4101 mSDsCounter, 691 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3762 IncrementalHoareTripleChecker+Invalid, 4453 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 691 mSolverCounterUnsat, 766 mSDtfsCounter, 3762 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3119 GetRequests, 2792 SyntacticMatches, 6 SemanticMatches, 321 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1927 ImplicationChecksByTransitivity, 35.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred in iteration=18, InterpolantAutomatonStates: 201, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 19 MinimizatonAttempts, 113 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 74.8s InterpolantComputationTime, 3002 NumberOfCodeBlocks, 2975 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 3475 ConstructedInterpolants, 1 QuantifiedInterpolants, 43974 SizeOfPredicates, 33 NumberOfNonLiveVariables, 3078 ConjunctsInSsa, 373 ConjunctsInUnsatCore, 38 InterpolantComputations, 7 PerfectInterpolantSequences, 12185/13176 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((((((((((0 <= r) && (((__int128) r + 1) <= d)) && (((__int128) d + r) == A)) && (((__int128) r + ((long long) 2 * B)) == ((__int128) A + d))) && (q == 1)) && (p == 1)) || (((((((0 <= (r + (((__int128) -1 * d) / 2))) && (((__int128) r + 1) <= d)) && (((__int128) A + d) == ((__int128) ((long long) B * 4) + r))) && ((d % 2) == 0)) && (q == 0)) && (p == 4)) && ((A + (d / 2)) == ((__int128) r + ((long long) 2 * B))))) || ((((((q == 2) && (0 <= r)) && (p == 2)) && (((__int128) A + d) == ((__int128) ((long long) B * 4) + r))) && (A == ((__int128) r + ((long long) 2 * B)))) && ((((__int128) d + r) + 1) <= ((long long) B * 4)))) || ((((((A == r) && (d == ((long long) 2 * B))) && (((__int128) r + 1) <= d)) && (p == 2)) && (q == 0)) && (B <= r))) || ((((((q == 2) && (B <= 2147483647)) && (((__int128) r + 1) <= ((__int128) d + (d / 2)))) && (d == ((A + ((__int128) -1 * r)) / 2))) && (A == ((__int128) r + ((long long) 2 * B)))) && (p == 1))) || (((((((((__int128) r + B) + ((__int128) q * B)) == ((__int128) A + d)) && (((__int128) r + 1) <= ((__int128) d + (d / 2)))) && (((__int128) r + ((long long) 2 * B)) <= 4294967295)) && ((r + ((__int128) q * B)) == A)) && (((__int128) d + ((long long) 2 * B)) <= 4294967295)) && (p == 1))) || ((((d == B) && (A == r)) && (q == 0)) && (p == 1))) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((d == B) && (A == r)) && (A <= 5)) && (q == 0)) && (1 <= d)) && (p == 1)) - ProcedureContractResult [Line: 11]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-09-25 11:09:06,134 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE