./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound50.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ca4ee3dd 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/geo3-ll_valuebound50.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e8ba7d590cbb780f326a15a59f36cf1896b82ce2465f6328eea27dcc3a24abff --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-ca4ee3d-m [2024-09-20 19:28:38,586 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 19:28:38,642 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 19:28:38,647 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 19:28:38,648 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 19:28:38,672 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 19:28:38,674 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 19:28:38,674 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 19:28:38,675 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 19:28:38,675 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 19:28:38,676 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 19:28:38,676 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 19:28:38,677 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 19:28:38,677 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 19:28:38,678 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 19:28:38,678 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 19:28:38,679 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 19:28:38,681 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 19:28:38,681 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 19:28:38,681 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 19:28:38,681 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 19:28:38,682 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 19:28:38,682 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 19:28:38,682 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 19:28:38,682 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 19:28:38,682 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 19:28:38,683 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 19:28:38,683 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 19:28:38,683 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 19:28:38,683 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 19:28:38,683 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 19:28:38,683 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 19:28:38,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:28:38,684 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 19:28:38,684 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 19:28:38,686 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 19:28:38,686 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 19:28:38,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 19:28:38,686 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 19:28:38,686 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 19:28:38,687 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 19:28:38,687 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 19:28:38,687 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8ba7d590cbb780f326a15a59f36cf1896b82ce2465f6328eea27dcc3a24abff Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 19:28:38,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 19:28:38,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 19:28:38,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 19:28:38,917 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 19:28:38,917 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 19:28:38,918 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound50.c [2024-09-20 19:28:40,126 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 19:28:40,254 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 19:28:40,255 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound50.c [2024-09-20 19:28:40,261 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/c11bf9084/b6687f34d4a749d3a6370d2c38f8cd76/FLAGca65644a0 [2024-09-20 19:28:40,275 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/c11bf9084/b6687f34d4a749d3a6370d2c38f8cd76 [2024-09-20 19:28:40,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 19:28:40,279 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 19:28:40,280 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 19:28:40,281 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 19:28:40,284 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 19:28:40,286 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:28:40" (1/1) ... [2024-09-20 19:28:40,287 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28e4dc3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:28:40, skipping insertion in model container [2024-09-20 19:28:40,287 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:28:40" (1/1) ... [2024-09-20 19:28:40,302 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 19:28:40,424 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/geo3-ll_valuebound50.c[524,537] [2024-09-20 19:28:40,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:28:40,444 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 19:28:40,451 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/geo3-ll_valuebound50.c[524,537] [2024-09-20 19:28:40,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:28:40,466 INFO L204 MainTranslator]: Completed translation [2024-09-20 19:28:40,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:28:40 WrapperNode [2024-09-20 19:28:40,466 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 19:28:40,467 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 19:28:40,467 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 19:28:40,467 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 19:28:40,477 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:28:40" (1/1) ... [2024-09-20 19:28:40,481 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:28:40" (1/1) ... [2024-09-20 19:28:40,486 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 19:28:40,486 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 19:28:40,486 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 19:28:40,486 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 19:28:40,487 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 19:28:40,493 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:28:40" (1/1) ... [2024-09-20 19:28:40,493 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:28:40" (1/1) ... [2024-09-20 19:28:40,494 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:28:40" (1/1) ... [2024-09-20 19:28:40,506 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]. [2024-09-20 19:28:40,506 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:28:40" (1/1) ... [2024-09-20 19:28:40,507 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:28:40" (1/1) ... [2024-09-20 19:28:40,511 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:28:40" (1/1) ... [2024-09-20 19:28:40,513 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:28:40" (1/1) ... [2024-09-20 19:28:40,514 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:28:40" (1/1) ... [2024-09-20 19:28:40,514 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:28:40" (1/1) ... [2024-09-20 19:28:40,516 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 19:28:40,517 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 19:28:40,517 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 19:28:40,518 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 19:28:40,518 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:28:40" (1/1) ... [2024-09-20 19:28:40,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:28:40,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:28:40,542 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-20 19:28:40,543 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-20 19:28:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 19:28:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-20 19:28:40,577 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-20 19:28:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 19:28:40,578 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 19:28:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 19:28:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 19:28:40,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 19:28:40,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 19:28:40,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 19:28:40,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 19:28:40,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 19:28:40,649 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 19:28:40,650 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 19:28:40,803 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-09-20 19:28:40,804 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 19:28:40,819 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 19:28:40,819 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-20 19:28:40,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:28:40 BoogieIcfgContainer [2024-09-20 19:28:40,820 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 19:28:40,824 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 19:28:40,824 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 19:28:40,827 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 19:28:40,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 07:28:40" (1/3) ... [2024-09-20 19:28:40,827 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d264683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:28:40, skipping insertion in model container [2024-09-20 19:28:40,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:28:40" (2/3) ... [2024-09-20 19:28:40,828 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d264683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:28:40, skipping insertion in model container [2024-09-20 19:28:40,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:28:40" (3/3) ... [2024-09-20 19:28:40,829 INFO L112 eAbstractionObserver]: Analyzing ICFG geo3-ll_valuebound50.c [2024-09-20 19:28:40,840 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 19:28:40,841 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 19:28:40,884 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 19:28:40,890 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;@3eaa8f22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 19:28:40,890 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 19:28:40,896 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-20 19:28:40,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-20 19:28:40,901 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:28:40,901 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, 1] [2024-09-20 19:28:40,902 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:28:40,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:28:40,905 INFO L85 PathProgramCache]: Analyzing trace with hash -839968477, now seen corresponding path program 1 times [2024-09-20 19:28:40,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:28:40,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713949234] [2024-09-20 19:28:40,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:28:40,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:28:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:28:41,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:28:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:28:41,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:28:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:28:41,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 19:28:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:28:41,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 19:28:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:28:41,096 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 19:28:41,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:28:41,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713949234] [2024-09-20 19:28:41,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713949234] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:28:41,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:28:41,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 19:28:41,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848161818] [2024-09-20 19:28:41,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:28:41,105 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-20 19:28:41,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:28:41,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-20 19:28:41,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 19:28:41,123 INFO L87 Difference]: Start difference. First operand has 29 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-09-20 19:28:41,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:28:41,147 INFO L93 Difference]: Finished difference Result 52 states and 70 transitions. [2024-09-20 19:28:41,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-20 19:28:41,149 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 28 [2024-09-20 19:28:41,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:28:41,153 INFO L225 Difference]: With dead ends: 52 [2024-09-20 19:28:41,154 INFO L226 Difference]: Without dead ends: 25 [2024-09-20 19:28:41,156 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 [2024-09-20 19:28:41,158 INFO L434 NwaCegarLoop]: 30 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, 30 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 19:28:41,158 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 19:28:41,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-20 19:28:41,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-09-20 19:28:41,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 19:28:41,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-09-20 19:28:41,186 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 28 [2024-09-20 19:28:41,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:28:41,186 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-09-20 19:28:41,186 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-09-20 19:28:41,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:28:41,187 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-09-20 19:28:41,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-20 19:28:41,188 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:28:41,188 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, 1] [2024-09-20 19:28:41,189 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 19:28:41,189 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:28:41,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:28:41,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1024519709, now seen corresponding path program 1 times [2024-09-20 19:28:41,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:28:41,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139954582] [2024-09-20 19:28:41,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:28:41,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:28:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:28:41,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2107407091] [2024-09-20 19:28:41,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:28:41,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:28:41,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:28:41,234 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:28:41,238 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 19:28:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:28:41,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-20 19:28:41,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:28:41,412 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 19:28:41,415 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 19:28:41,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:28:41,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139954582] [2024-09-20 19:28:41,416 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:28:41,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107407091] [2024-09-20 19:28:41,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107407091] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:28:41,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:28:41,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 19:28:41,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133511942] [2024-09-20 19:28:41,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:28:41,419 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 19:28:41,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:28:41,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 19:28:41,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 19:28:41,420 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-09-20 19:28:41,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:28:41,467 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2024-09-20 19:28:41,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 19:28:41,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 28 [2024-09-20 19:28:41,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:28:41,469 INFO L225 Difference]: With dead ends: 35 [2024-09-20 19:28:41,469 INFO L226 Difference]: Without dead ends: 32 [2024-09-20 19:28:41,470 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 19:28:41,470 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 4 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 19:28:41,471 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 88 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 19:28:41,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-20 19:28:41,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-20 19:28:41,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 19:28:41,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2024-09-20 19:28:41,477 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 28 [2024-09-20 19:28:41,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:28:41,478 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2024-09-20 19:28:41,478 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-09-20 19:28:41,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:28:41,479 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2024-09-20 19:28:41,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-20 19:28:41,479 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:28:41,480 INFO L216 NwaCegarLoop]: trace histogram [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] [2024-09-20 19:28:41,492 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-20 19:28:41,680 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 [2024-09-20 19:28:41,681 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:28:41,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:28:41,682 INFO L85 PathProgramCache]: Analyzing trace with hash 535256771, now seen corresponding path program 1 times [2024-09-20 19:28:41,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:28:41,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967483052] [2024-09-20 19:28:41,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:28:41,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:28:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:28:41,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [156370428] [2024-09-20 19:28:41,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:28:41,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:28:41,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:28:41,716 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:28:41,719 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 19:28:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:28:41,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-20 19:28:41,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:28:41,851 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 19:28:41,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:28:46,464 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 2 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 19:28:46,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:28:46,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967483052] [2024-09-20 19:28:46,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:28:46,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156370428] [2024-09-20 19:28:46,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156370428] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:28:46,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 19:28:46,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2024-09-20 19:28:46,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786066850] [2024-09-20 19:28:46,466 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 19:28:46,466 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-20 19:28:46,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:28:46,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-20 19:28:46,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=38, Unknown=1, NotChecked=0, Total=56 [2024-09-20 19:28:46,467 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-20 19:28:54,441 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 [] [2024-09-20 19:28:58,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 19:29:02,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 19:29:06,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 19:29:10,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 19:29:14,483 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 [] [2024-09-20 19:29:14,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:29:14,526 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2024-09-20 19:29:14,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-20 19:29:14,527 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 35 [2024-09-20 19:29:14,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:29:14,530 INFO L225 Difference]: With dead ends: 50 [2024-09-20 19:29:14,531 INFO L226 Difference]: Without dead ends: 45 [2024-09-20 19:29:14,532 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=27, Invalid=62, Unknown=1, NotChecked=0, Total=90 [2024-09-20 19:29:14,532 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.2s IncrementalHoareTripleChecker+Time [2024-09-20 19:29:14,533 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 158 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 6 Unknown, 0 Unchecked, 24.2s Time] [2024-09-20 19:29:14,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-20 19:29:14,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-09-20 19:29:14,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 11 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-20 19:29:14,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2024-09-20 19:29:14,557 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 35 [2024-09-20 19:29:14,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:29:14,557 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2024-09-20 19:29:14,558 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-20 19:29:14,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:29:14,558 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2024-09-20 19:29:14,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-20 19:29:14,559 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:29:14,559 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:29:14,571 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-20 19:29:14,760 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 [2024-09-20 19:29:14,760 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:29:14,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:29:14,761 INFO L85 PathProgramCache]: Analyzing trace with hash -549742109, now seen corresponding path program 2 times [2024-09-20 19:29:14,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:29:14,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142143969] [2024-09-20 19:29:14,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:29:14,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:29:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:29:14,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265613972] [2024-09-20 19:29:14,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 19:29:14,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:29:14,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:29:14,826 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:29:14,827 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 19:29:15,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 19:29:15,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:29:15,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-20 19:29:15,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:29:15,620 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 16 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-20 19:29:15,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:29:32,405 WARN L876 $PredicateComparison]: unable to prove that (or (= (mod (+ (* c_main_~x~0 c_main_~z~0 c_main_~z~0) (* c_main_~a~0 c_main_~z~0) (* 18446744073709551615 c_main_~x~0 c_main_~z~0) (* 18446744073709551615 c_main_~y~0 c_main_~az~0 c_main_~z~0)) 18446744073709551616) 0) (not (= (mod (+ (* c_main_~x~0 c_main_~z~0) (* 18446744073709551615 c_main_~y~0 c_main_~az~0) (* 18446744073709551615 c_main_~x~0) c_main_~a~0) 18446744073709551616) 0))) is different from true [2024-09-20 19:29:45,500 WARN L293 SmtUtils]: Spent 8.18s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-20 19:29:53,524 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) (* 18446744073709551615 c_main_~x~0 c_main_~z~0 c_main_~z~0) (* 18446744073709551615 c_main_~y~0 c_main_~az~0 c_main_~z~0 c_main_~z~0) (* c_main_~a~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_~a~0 c_main_~z~0) (* 18446744073709551615 c_main_~x~0 c_main_~z~0) (* 18446744073709551615 c_main_~y~0 c_main_~az~0 c_main_~z~0)) 18446744073709551616) 0))) is different from true [2024-09-20 19:30:05,829 WARN L293 SmtUtils]: Spent 8.24s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-20 19:30:12,708 WARN L293 SmtUtils]: Spent 6.87s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-20 19:30:20,729 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-20 19:30:33,773 WARN L854 $PredicateComparison]: unable to prove that (or (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_~az~0 c_main_~z~0 c_main_~z~0) (* c_main_~a~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 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_~az~0 c_main_~z~0 c_main_~z~0 c_main_~z~0) (* c_main_~a~0 c_main_~z~0 c_main_~z~0 c_main_~z~0)) 18446744073709551616) 0)) is different from false [2024-09-20 19:30:37,788 WARN L876 $PredicateComparison]: unable to prove that (or (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_~az~0 c_main_~z~0 c_main_~z~0) (* c_main_~a~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 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_~az~0 c_main_~z~0 c_main_~z~0 c_main_~z~0) (* c_main_~a~0 c_main_~z~0 c_main_~z~0 c_main_~z~0)) 18446744073709551616) 0)) is different from true [2024-09-20 19:30:58,130 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-20 19:31:10,869 WARN L854 $PredicateComparison]: unable to prove that (or (= (mod (+ (* c_main_~a~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) (* 18446744073709551615 c_main_~y~0 c_main_~az~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) (* 18446744073709551615 c_main_~x~0 c_main_~z~0 c_main_~z~0 c_main_~z~0) (* 18446744073709551615 c_main_~y~0 c_main_~az~0 c_main_~z~0 c_main_~z~0 c_main_~z~0) (* c_main_~a~0 c_main_~z~0 c_main_~z~0 c_main_~z~0)) 18446744073709551616) 0))) is different from false [2024-09-20 19:31:14,906 WARN L876 $PredicateComparison]: unable to prove that (or (= (mod (+ (* c_main_~a~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) (* 18446744073709551615 c_main_~y~0 c_main_~az~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) (* 18446744073709551615 c_main_~x~0 c_main_~z~0 c_main_~z~0 c_main_~z~0) (* 18446744073709551615 c_main_~y~0 c_main_~az~0 c_main_~z~0 c_main_~z~0 c_main_~z~0) (* c_main_~a~0 c_main_~z~0 c_main_~z~0 c_main_~z~0)) 18446744073709551616) 0))) is different from true [2024-09-20 19:31:35,175 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-20 19:31:35,213 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 26 not checked. [2024-09-20 19:31:35,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:31:35,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142143969] [2024-09-20 19:31:35,214 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:31:35,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265613972] [2024-09-20 19:31:35,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265613972] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:31:35,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 19:31:35,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 23 [2024-09-20 19:31:35,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261893960] [2024-09-20 19:31:35,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 19:31:35,215 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-20 19:31:35,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:31:35,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-20 19:31:35,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=282, Unknown=7, NotChecked=148, Total=506 [2024-09-20 19:31:35,217 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 21 states have internal predecessors, (45), 13 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2024-09-20 19:31:48,249 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 [] [2024-09-20 19:32:00,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 19:32:04,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 19:32:08,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 19:32:12,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 19:32:16,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 19:32:20,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 19:32:20,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:32:20,493 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2024-09-20 19:32:20,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-20 19:32:20,496 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 21 states have internal predecessors, (45), 13 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) Word has length 56 [2024-09-20 19:32:20,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:32:20,498 INFO L225 Difference]: With dead ends: 61 [2024-09-20 19:32:20,498 INFO L226 Difference]: Without dead ends: 56 [2024-09-20 19:32:20,499 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 90 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 45.0s TimeCoverageRelationStatistics Valid=99, Invalid=370, Unknown=9, NotChecked=172, Total=650 [2024-09-20 19:32:20,499 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 18 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 20 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 237 IncrementalHoareTripleChecker+Unchecked, 28.9s IncrementalHoareTripleChecker+Time [2024-09-20 19:32:20,500 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 240 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 223 Invalid, 7 Unknown, 237 Unchecked, 28.9s Time] [2024-09-20 19:32:20,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-20 19:32:20,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-09-20 19:32:20,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-20 19:32:20,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2024-09-20 19:32:20,518 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 56 [2024-09-20 19:32:20,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:32:20,519 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2024-09-20 19:32:20,519 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 21 states have internal predecessors, (45), 13 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2024-09-20 19:32:20,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:32:20,519 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2024-09-20 19:32:20,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-09-20 19:32:20,521 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:32:20,521 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:32:20,527 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-20 19:32:20,721 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 [2024-09-20 19:32:20,722 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:32:20,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:32:20,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1596035779, now seen corresponding path program 3 times [2024-09-20 19:32:20,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:32:20,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557751390] [2024-09-20 19:32:20,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:32:20,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:32:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:32:20,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788249738] [2024-09-20 19:32:20,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 19:32:20,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:32:20,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:32:20,778 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:32:20,780 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process