./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound100.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound100.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b3d0d63b4f79c4f9ae0c19cc6d4aa64fc14c5b293d51178c1ef9a9e32f786662 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-17 18:52:41,483 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-17 18:52:41,536 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-17 18:52:41,540 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-17 18:52:41,541 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-17 18:52:41,563 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-17 18:52:41,564 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-17 18:52:41,565 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-17 18:52:41,565 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-17 18:52:41,567 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-17 18:52:41,567 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-17 18:52:41,567 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-17 18:52:41,568 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-17 18:52:41,569 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-17 18:52:41,569 INFO L153 SettingsManager]: * Use SBE=true [2024-09-17 18:52:41,570 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-17 18:52:41,570 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-17 18:52:41,570 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-17 18:52:41,570 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-17 18:52:41,571 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-17 18:52:41,571 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-17 18:52:41,573 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-17 18:52:41,573 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-17 18:52:41,574 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-17 18:52:41,574 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-17 18:52:41,574 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-17 18:52:41,574 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-17 18:52:41,574 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-17 18:52:41,575 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-17 18:52:41,575 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-17 18:52:41,575 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-17 18:52:41,575 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-17 18:52:41,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 18:52:41,576 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-17 18:52:41,576 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-17 18:52:41,576 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-17 18:52:41,576 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-17 18:52:41,576 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-17 18:52:41,577 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-17 18:52:41,577 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-17 18:52:41,577 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-17 18:52:41,578 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-17 18:52:41,578 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3d0d63b4f79c4f9ae0c19cc6d4aa64fc14c5b293d51178c1ef9a9e32f786662 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-17 18:52:41,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-17 18:52:41,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-17 18:52:41,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-17 18:52:41,774 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-17 18:52:41,774 INFO L274 PluginConnector]: CDTParser initialized [2024-09-17 18:52:41,775 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound100.c [2024-09-17 18:52:43,194 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-17 18:52:43,357 INFO L384 CDTParser]: Found 1 translation units. [2024-09-17 18:52:43,357 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound100.c [2024-09-17 18:52:43,364 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/dcc0692c3/33e93659f91b435fab6619ad8457c037/FLAG259923c48 [2024-09-17 18:52:43,383 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/dcc0692c3/33e93659f91b435fab6619ad8457c037 [2024-09-17 18:52:43,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-17 18:52:43,387 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-17 18:52:43,390 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-17 18:52:43,390 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-17 18:52:43,397 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-17 18:52:43,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 06:52:43" (1/1) ... [2024-09-17 18:52:43,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e044964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:52:43, skipping insertion in model container [2024-09-17 18:52:43,399 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 06:52:43" (1/1) ... [2024-09-17 18:52:43,417 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-17 18:52:43,541 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/geo1-ll_valuebound100.c[545,558] [2024-09-17 18:52:43,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 18:52:43,564 INFO L200 MainTranslator]: Completed pre-run [2024-09-17 18:52:43,573 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/geo1-ll_valuebound100.c[545,558] [2024-09-17 18:52:43,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 18:52:43,587 INFO L204 MainTranslator]: Completed translation [2024-09-17 18:52:43,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:52:43 WrapperNode [2024-09-17 18:52:43,587 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-17 18:52:43,588 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-17 18:52:43,588 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-17 18:52:43,588 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-17 18:52:43,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:52:43" (1/1) ... [2024-09-17 18:52:43,606 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:52:43" (1/1) ... [2024-09-17 18:52:43,611 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-17 18:52:43,612 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-17 18:52:43,613 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-17 18:52:43,613 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-17 18:52:43,613 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-17 18:52:43,638 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:52:43" (1/1) ... [2024-09-17 18:52:43,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:52:43" (1/1) ... [2024-09-17 18:52:43,640 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:52:43" (1/1) ... [2024-09-17 18:52:43,650 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-17 18:52:43,651 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:52:43" (1/1) ... [2024-09-17 18:52:43,651 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:52:43" (1/1) ... [2024-09-17 18:52:43,653 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:52:43" (1/1) ... [2024-09-17 18:52:43,655 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:52:43" (1/1) ... [2024-09-17 18:52:43,656 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:52:43" (1/1) ... [2024-09-17 18:52:43,657 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:52:43" (1/1) ... [2024-09-17 18:52:43,660 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-17 18:52:43,661 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-17 18:52:43,661 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-17 18:52:43,661 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-17 18:52:43,662 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:52:43" (1/1) ... [2024-09-17 18:52:43,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 18:52:43,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:52:43,702 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-17 18:52:43,704 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-17 18:52:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-17 18:52:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-17 18:52:43,735 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-17 18:52:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-17 18:52:43,735 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-17 18:52:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-17 18:52:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-17 18:52:43,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-17 18:52:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-17 18:52:43,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-17 18:52:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-17 18:52:43,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-17 18:52:43,781 INFO L242 CfgBuilder]: Building ICFG [2024-09-17 18:52:43,783 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-17 18:52:43,877 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-09-17 18:52:43,877 INFO L291 CfgBuilder]: Performing block encoding [2024-09-17 18:52:43,890 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-17 18:52:43,890 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-17 18:52:43,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 06:52:43 BoogieIcfgContainer [2024-09-17 18:52:43,891 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-17 18:52:43,892 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-17 18:52:43,893 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-17 18:52:43,898 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-17 18:52:43,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 06:52:43" (1/3) ... [2024-09-17 18:52:43,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60940936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 06:52:43, skipping insertion in model container [2024-09-17 18:52:43,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:52:43" (2/3) ... [2024-09-17 18:52:43,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60940936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 06:52:43, skipping insertion in model container [2024-09-17 18:52:43,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 06:52:43" (3/3) ... [2024-09-17 18:52:43,900 INFO L112 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound100.c [2024-09-17 18:52:43,912 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-17 18:52:43,912 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-17 18:52:43,949 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-17 18:52:43,953 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;@7bd1577b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-17 18:52:43,953 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-17 18:52:43,956 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-17 18:52:43,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-17 18:52:43,961 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:52:43,962 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:52:43,962 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:52:43,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:52:43,965 INFO L85 PathProgramCache]: Analyzing trace with hash -615698490, now seen corresponding path program 1 times [2024-09-17 18:52:43,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:52:43,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836143508] [2024-09-17 18:52:43,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:52:43,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:52:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:52:44,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:52:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:52:44,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:52:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:52:44,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 18:52:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:52:44,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-17 18:52:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:52:44,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-17 18:52:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:52:44,124 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-17 18:52:44,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:52:44,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836143508] [2024-09-17 18:52:44,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836143508] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:52:44,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:52:44,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-17 18:52:44,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928845756] [2024-09-17 18:52:44,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:52:44,131 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-17 18:52:44,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:52:44,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-17 18:52:44,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 18:52:44,150 INFO L87 Difference]: Start difference. First operand has 30 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-17 18:52:44,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:52:44,167 INFO L93 Difference]: Finished difference Result 54 states and 75 transitions. [2024-09-17 18:52:44,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-17 18:52:44,169 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2024-09-17 18:52:44,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:52:44,173 INFO L225 Difference]: With dead ends: 54 [2024-09-17 18:52:44,174 INFO L226 Difference]: Without dead ends: 26 [2024-09-17 18:52:44,176 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 18:52:44,178 INFO L434 NwaCegarLoop]: 32 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, 32 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 18:52:44,179 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 18:52:44,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-17 18:52:44,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-09-17 18:52:44,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-17 18:52:44,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-09-17 18:52:44,210 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2024-09-17 18:52:44,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:52:44,210 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-09-17 18:52:44,210 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-17 18:52:44,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:52:44,211 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-09-17 18:52:44,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-17 18:52:44,212 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:52:44,212 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:52:44,212 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-17 18:52:44,213 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:52:44,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:52:44,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1799814794, now seen corresponding path program 1 times [2024-09-17 18:52:44,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:52:44,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939736332] [2024-09-17 18:52:44,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:52:44,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:52:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:52:44,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1164915182] [2024-09-17 18:52:44,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:52:44,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:52:44,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:52:44,248 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:52:44,250 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-17 18:52:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:52:44,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-17 18:52:44,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:52:44,460 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-17 18:52:44,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 18:52:44,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:52:44,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939736332] [2024-09-17 18:52:44,461 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:52:44,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164915182] [2024-09-17 18:52:44,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164915182] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:52:44,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:52:44,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 18:52:44,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143340319] [2024-09-17 18:52:44,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:52:44,464 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 18:52:44,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:52:44,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 18:52:44,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 18:52:44,467 INFO L87 Difference]: Start difference. First operand 26 states and 30 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-17 18:52:44,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:52:44,515 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2024-09-17 18:52:44,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 18:52:44,517 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 32 [2024-09-17 18:52:44,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:52:44,518 INFO L225 Difference]: With dead ends: 36 [2024-09-17 18:52:44,518 INFO L226 Difference]: Without dead ends: 34 [2024-09-17 18:52:44,519 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 18:52:44,520 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 18:52:44,520 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 93 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 18:52:44,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-17 18:52:44,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-09-17 18:52:44,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 20 states have internal predecessors, (20), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-17 18:52:44,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-09-17 18:52:44,526 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 32 [2024-09-17 18:52:44,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:52:44,527 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-09-17 18:52:44,527 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-17 18:52:44,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:52:44,527 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-09-17 18:52:44,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-17 18:52:44,528 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:52:44,528 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:52:44,542 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-17 18:52:44,732 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:52:44,733 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:52:44,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:52:44,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1396019833, now seen corresponding path program 1 times [2024-09-17 18:52:44,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:52:44,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156765148] [2024-09-17 18:52:44,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:52:44,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:52:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:52:45,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:52:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:52:45,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:52:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:52:45,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 18:52:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:52:45,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-17 18:52:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:52:45,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-17 18:52:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:52:45,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-17 18:52:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:52:45,146 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-17 18:52:45,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:52:45,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156765148] [2024-09-17 18:52:45,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156765148] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:52:45,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096451009] [2024-09-17 18:52:45,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:52:45,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:52:45,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:52:45,152 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:52:45,154 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-17 18:52:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:52:45,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-17 18:52:45,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:52:45,318 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-17 18:52:45,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 18:52:45,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096451009] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:52:45,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-17 18:52:45,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-09-17 18:52:45,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255784462] [2024-09-17 18:52:45,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:52:45,321 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-17 18:52:45,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:52:45,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-17 18:52:45,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-09-17 18:52:45,323 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 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) [2024-09-17 18:52:45,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:52:45,380 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2024-09-17 18:52:45,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-17 18:52:45,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 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 39 [2024-09-17 18:52:45,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:52:45,382 INFO L225 Difference]: With dead ends: 41 [2024-09-17 18:52:45,383 INFO L226 Difference]: Without dead ends: 33 [2024-09-17 18:52:45,383 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-09-17 18:52:45,385 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 18:52:45,386 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 115 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 18:52:45,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-17 18:52:45,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-17 18:52:45,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-17 18:52:45,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-09-17 18:52:45,394 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 39 [2024-09-17 18:52:45,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:52:45,395 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-09-17 18:52:45,395 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 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) [2024-09-17 18:52:45,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:52:45,395 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-09-17 18:52:45,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-17 18:52:45,396 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:52:45,396 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:52:45,409 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-17 18:52:45,599 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:52:45,600 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:52:45,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:52:45,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1348056323, now seen corresponding path program 1 times [2024-09-17 18:52:45,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:52:45,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883238632] [2024-09-17 18:52:45,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:52:45,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:52:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:52:45,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2069119224] [2024-09-17 18:52:45,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:52:45,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:52:45,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:52:45,640 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:52:45,641 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-17 18:52:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:52:45,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-17 18:52:45,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:52:45,811 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-17 18:52:45,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:52:50,002 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 2 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-17 18:52:50,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:52:50,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883238632] [2024-09-17 18:52:50,003 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:52:50,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069119224] [2024-09-17 18:52:50,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069119224] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:52:50,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:52:50,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 11 [2024-09-17 18:52:50,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952760521] [2024-09-17 18:52:50,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:52:50,004 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-17 18:52:50,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:52:50,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-17 18:52:50,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=84, Unknown=1, NotChecked=0, Total=110 [2024-09-17 18:52:50,005 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-17 18:52:58,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:53:10,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:53:14,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:53:18,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:53:22,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:53:26,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:53:26,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:53:26,743 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2024-09-17 18:53:26,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-17 18:53:26,744 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 39 [2024-09-17 18:53:26,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:53:26,746 INFO L225 Difference]: With dead ends: 51 [2024-09-17 18:53:26,746 INFO L226 Difference]: Without dead ends: 49 [2024-09-17 18:53:26,746 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=43, Invalid=136, Unknown=3, NotChecked=0, Total=182 [2024-09-17 18:53:26,747 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 18 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 6 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.4s IncrementalHoareTripleChecker+Time [2024-09-17 18:53:26,747 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 158 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 128 Invalid, 6 Unknown, 0 Unchecked, 24.4s Time] [2024-09-17 18:53:26,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-17 18:53:26,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2024-09-17 18:53:26,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 29 states have internal predecessors, (31), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-17 18:53:26,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2024-09-17 18:53:26,784 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 39 [2024-09-17 18:53:26,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:53:26,785 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2024-09-17 18:53:26,785 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-17 18:53:26,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:53:26,785 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2024-09-17 18:53:26,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-17 18:53:26,786 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:53:26,786 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:53:26,799 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-17 18:53:26,986 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:53:26,987 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:53:26,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:53:26,987 INFO L85 PathProgramCache]: Analyzing trace with hash 319080884, now seen corresponding path program 1 times [2024-09-17 18:53:26,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:53:26,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483099180] [2024-09-17 18:53:26,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:53:26,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:53:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:53:27,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:53:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:53:27,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:53:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:53:27,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 18:53:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:53:27,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-17 18:53:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:53:27,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-17 18:53:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:53:27,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-17 18:53:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:53:27,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-17 18:53:27,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:53:27,293 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-17 18:53:27,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:53:27,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483099180] [2024-09-17 18:53:27,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483099180] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:53:27,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336459710] [2024-09-17 18:53:27,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:53:27,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:53:27,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:53:27,296 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:53:27,298 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-17 18:53:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:53:27,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-17 18:53:27,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:53:36,456 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-17 18:53:36,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:53:36,622 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-17 18:53:36,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336459710] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:53:36,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:53:36,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2024-09-17 18:53:36,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043486545] [2024-09-17 18:53:36,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:53:36,624 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-17 18:53:36,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:53:36,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-17 18:53:36,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=83, Unknown=2, NotChecked=0, Total=110 [2024-09-17 18:53:36,626 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-17 18:53:40,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-17 18:53:44,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-17 18:53:49,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-17 18:53:53,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:53:57,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-17 18:53:57,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:53:57,264 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2024-09-17 18:53:57,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-17 18:53:57,265 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 46 [2024-09-17 18:53:57,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:53:57,267 INFO L225 Difference]: With dead ends: 51 [2024-09-17 18:53:57,268 INFO L226 Difference]: Without dead ends: 43 [2024-09-17 18:53:57,269 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 98 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=33, Invalid=97, Unknown=2, NotChecked=0, Total=132 [2024-09-17 18:53:57,269 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 4 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2024-09-17 18:53:57,270 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 148 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 5 Unknown, 0 Unchecked, 20.6s Time] [2024-09-17 18:53:57,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-17 18:53:57,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-09-17 18:53:57,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 11 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-17 18:53:57,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2024-09-17 18:53:57,282 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 46 [2024-09-17 18:53:57,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:53:57,282 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2024-09-17 18:53:57,282 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-17 18:53:57,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:53:57,283 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2024-09-17 18:53:57,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-17 18:53:57,284 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:53:57,285 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:53:57,304 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-17 18:53:57,485 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:53:57,486 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:53:57,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:53:57,486 INFO L85 PathProgramCache]: Analyzing trace with hash -409552950, now seen corresponding path program 2 times [2024-09-17 18:53:57,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:53:57,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591948844] [2024-09-17 18:53:57,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:53:57,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:53:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:53:57,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340860027] [2024-09-17 18:53:57,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 18:53:57,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:53:57,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:53:57,534 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:53:57,535 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-17 18:53:57,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 18:53:57,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:53:57,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-17 18:53:57,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:53:57,970 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 19 proven. 36 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-17 18:53:57,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:54:14,182 WARN L876 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* c_main_~x~0 c_main_~z~0) (* 18446744073709551615 c_main_~x~0) (* 18446744073709551615 c_main_~y~0) 1) 18446744073709551616) 0)) (= (mod (+ (* c_main_~x~0 c_main_~z~0 c_main_~z~0) (* 18446744073709551615 c_main_~y~0 c_main_~z~0) (* 18446744073709551615 c_main_~x~0 c_main_~z~0) c_main_~z~0) 18446744073709551616) 0)) is different from true [2024-09-17 18:54:34,346 WARN L876 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* c_main_~x~0 c_main_~z~0 c_main_~z~0) (* 18446744073709551615 c_main_~y~0 c_main_~z~0) (* 18446744073709551615 c_main_~x~0 c_main_~z~0) c_main_~z~0) 18446744073709551616) 0)) (= (mod (+ (* c_main_~x~0 c_main_~z~0 c_main_~z~0 c_main_~z~0) (* 18446744073709551615 c_main_~x~0 c_main_~z~0 c_main_~z~0) (* 18446744073709551615 c_main_~y~0 c_main_~z~0 c_main_~z~0) (* c_main_~z~0 c_main_~z~0)) 18446744073709551616) 0)) is different from true [2024-09-17 18:55:03,591 WARN L876 $PredicateComparison]: unable to prove that (or (= (mod (+ (* c_main_~x~0 c_main_~z~0 c_main_~z~0 c_main_~z~0 c_main_~z~0) (* c_main_~z~0 c_main_~z~0 c_main_~z~0) (* 18446744073709551615 c_main_~x~0 c_main_~z~0 c_main_~z~0 c_main_~z~0) (* 18446744073709551615 c_main_~y~0 c_main_~z~0 c_main_~z~0 c_main_~z~0)) 18446744073709551616) 0) (not (= (mod (+ (* c_main_~x~0 c_main_~z~0 c_main_~z~0 c_main_~z~0) (* 18446744073709551615 c_main_~x~0 c_main_~z~0 c_main_~z~0) (* 18446744073709551615 c_main_~y~0 c_main_~z~0 c_main_~z~0) (* c_main_~z~0 c_main_~z~0)) 18446744073709551616) 0))) is different from true [2024-09-17 18:55:32,023 WARN L876 $PredicateComparison]: unable to prove that (or (= (mod (+ (* 18446744073709551615 c_main_~y~0 c_main_~z~0 c_main_~z~0 c_main_~z~0 c_main_~z~0) (* c_main_~x~0 c_main_~z~0 c_main_~z~0 c_main_~z~0 c_main_~z~0 c_main_~z~0) (* c_main_~z~0 c_main_~z~0 c_main_~z~0 c_main_~z~0) (* 18446744073709551615 c_main_~x~0 c_main_~z~0 c_main_~z~0 c_main_~z~0 c_main_~z~0)) 18446744073709551616) 0) (not (= (mod (+ (* c_main_~x~0 c_main_~z~0 c_main_~z~0 c_main_~z~0 c_main_~z~0) (* c_main_~z~0 c_main_~z~0 c_main_~z~0) (* 18446744073709551615 c_main_~x~0 c_main_~z~0 c_main_~z~0 c_main_~z~0) (* 18446744073709551615 c_main_~y~0 c_main_~z~0 c_main_~z~0 c_main_~z~0)) 18446744073709551616) 0))) is different from true [2024-09-17 18:55:48,849 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 26 not checked. [2024-09-17 18:55:48,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:55:48,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591948844] [2024-09-17 18:55:48,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:55:48,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340860027] [2024-09-17 18:55:48,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340860027] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:55:48,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:55:48,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 23 [2024-09-17 18:55:48,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848034612] [2024-09-17 18:55:48,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:55:48,854 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-17 18:55:48,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:55:48,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-17 18:55:48,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=284, Unknown=5, NotChecked=148, Total=506 [2024-09-17 18:55:48,855 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 20 states have internal predecessors, (43), 13 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) [2024-09-17 18:55:56,846 WARN L293 SmtUtils]: Spent 5.29s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-17 18:56:00,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:56:12,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:56:16,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:56:20,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:56:24,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:56:29,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:56:29,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:56:29,005 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2024-09-17 18:56:29,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-17 18:56:29,008 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 20 states have internal predecessors, (43), 13 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) Word has length 60 [2024-09-17 18:56:29,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:56:29,009 INFO L225 Difference]: With dead ends: 58 [2024-09-17 18:56:29,009 INFO L226 Difference]: Without dead ends: 56 [2024-09-17 18:56:29,010 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 98 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 36.1s TimeCoverageRelationStatistics Valid=99, Invalid=372, Unknown=7, NotChecked=172, Total=650 [2024-09-17 18:56:29,010 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 10 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 15 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 217 IncrementalHoareTripleChecker+Unchecked, 24.4s IncrementalHoareTripleChecker+Time [2024-09-17 18:56:29,010 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 229 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 225 Invalid, 6 Unknown, 217 Unchecked, 24.4s Time] [2024-09-17 18:56:29,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-17 18:56:29,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-09-17 18:56:29,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 36 states have internal predecessors, (36), 14 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-17 18:56:29,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2024-09-17 18:56:29,029 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 60 [2024-09-17 18:56:29,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:56:29,031 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2024-09-17 18:56:29,031 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 20 states have internal predecessors, (43), 13 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) [2024-09-17 18:56:29,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:56:29,031 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2024-09-17 18:56:29,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-09-17 18:56:29,032 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:56:29,032 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:56:29,054 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-17 18:56:29,232 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-17 18:56:29,233 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:56:29,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:56:29,233 INFO L85 PathProgramCache]: Analyzing trace with hash 695745821, now seen corresponding path program 3 times [2024-09-17 18:56:29,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:56:29,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422898996] [2024-09-17 18:56:29,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:56:29,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:56:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:56:29,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418522758] [2024-09-17 18:56:29,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-17 18:56:29,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:56:29,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:56:29,279 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) [2024-09-17 18:56:29,282 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process