./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.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 f1d7dc9d 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/hard2_valuebound10.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 174cfd8cb6426614b32355f584844d4fc6265ba8fd3c3cda6c788ade64de4fc0 --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-f1d7dc9-m [2024-09-20 12:49:17,454 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 12:49:17,510 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 12:49:17,515 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 12:49:17,516 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 12:49:17,537 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 12:49:17,537 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 12:49:17,538 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 12:49:17,538 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 12:49:17,538 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 12:49:17,539 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 12:49:17,539 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 12:49:17,541 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 12:49:17,544 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 12:49:17,544 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 12:49:17,544 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 12:49:17,544 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 12:49:17,545 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 12:49:17,545 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 12:49:17,545 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 12:49:17,545 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 12:49:17,546 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 12:49:17,546 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 12:49:17,547 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 12:49:17,547 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 12:49:17,547 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 12:49:17,548 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 12:49:17,548 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 12:49:17,548 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 12:49:17,548 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 12:49:17,548 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 12:49:17,549 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 12:49:17,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 12:49:17,550 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 12:49:17,550 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 12:49:17,550 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 12:49:17,550 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 12:49:17,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 12:49:17,551 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 12:49:17,551 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 12:49:17,551 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 12:49:17,552 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 12:49:17,552 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 174cfd8cb6426614b32355f584844d4fc6265ba8fd3c3cda6c788ade64de4fc0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 12:49:17,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 12:49:17,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 12:49:17,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 12:49:17,758 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 12:49:17,762 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 12:49:17,763 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.c [2024-09-20 12:49:18,991 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 12:49:19,133 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 12:49:19,134 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.c [2024-09-20 12:49:19,139 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/e3c772fe9/5bcae81f86d54bd3a8de64924d682810/FLAG4628992e8 [2024-09-20 12:49:19,563 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/e3c772fe9/5bcae81f86d54bd3a8de64924d682810 [2024-09-20 12:49:19,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 12:49:19,566 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 12:49:19,567 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 12:49:19,567 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 12:49:19,576 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 12:49:19,576 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:49:19" (1/1) ... [2024-09-20 12:49:19,577 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a357dca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:49:19, skipping insertion in model container [2024-09-20 12:49:19,577 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:49:19" (1/1) ... [2024-09-20 12:49:19,592 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 12:49:19,712 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/hard2_valuebound10.c[526,539] [2024-09-20 12:49:19,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 12:49:19,741 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 12:49:19,751 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/hard2_valuebound10.c[526,539] [2024-09-20 12:49:19,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 12:49:19,780 INFO L204 MainTranslator]: Completed translation [2024-09-20 12:49:19,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:49:19 WrapperNode [2024-09-20 12:49:19,781 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 12:49:19,782 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 12:49:19,782 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 12:49:19,782 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 12:49:19,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:49:19" (1/1) ... [2024-09-20 12:49:19,802 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:49:19" (1/1) ... [2024-09-20 12:49:19,807 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 12:49:19,807 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 12:49:19,808 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 12:49:19,808 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 12:49:19,808 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 12:49:19,815 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:49:19" (1/1) ... [2024-09-20 12:49:19,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:49:19" (1/1) ... [2024-09-20 12:49:19,817 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:49:19" (1/1) ... [2024-09-20 12:49:19,825 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-09-20 12:49:19,826 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:49:19" (1/1) ... [2024-09-20 12:49:19,826 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:49:19" (1/1) ... [2024-09-20 12:49:19,828 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:49:19" (1/1) ... [2024-09-20 12:49:19,830 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:49:19" (1/1) ... [2024-09-20 12:49:19,831 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:49:19" (1/1) ... [2024-09-20 12:49:19,832 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:49:19" (1/1) ... [2024-09-20 12:49:19,833 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 12:49:19,833 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 12:49:19,833 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 12:49:19,834 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 12:49:19,834 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:49:19" (1/1) ... [2024-09-20 12:49:19,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 12:49:19,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:49:19,862 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 12:49:19,868 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 12:49:19,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 12:49:19,899 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-20 12:49:19,899 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-20 12:49:19,900 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 12:49:19,900 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 12:49:19,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 12:49:19,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-20 12:49:19,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 12:49:19,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 12:49:19,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 12:49:19,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 12:49:19,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 12:49:19,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 12:49:19,952 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 12:49:19,954 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 12:49:20,146 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-20 12:49:20,147 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 12:49:20,172 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 12:49:20,173 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-20 12:49:20,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:49:20 BoogieIcfgContainer [2024-09-20 12:49:20,173 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 12:49:20,175 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 12:49:20,175 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 12:49:20,177 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 12:49:20,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 12:49:19" (1/3) ... [2024-09-20 12:49:20,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea6f153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:49:20, skipping insertion in model container [2024-09-20 12:49:20,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:49:19" (2/3) ... [2024-09-20 12:49:20,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea6f153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:49:20, skipping insertion in model container [2024-09-20 12:49:20,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:49:20" (3/3) ... [2024-09-20 12:49:20,180 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound10.c [2024-09-20 12:49:20,191 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 12:49:20,191 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 12:49:20,230 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 12:49:20,235 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;@7818d84f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 12:49:20,235 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 12:49:20,238 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-20 12:49:20,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-20 12:49:20,243 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:49:20,243 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:49:20,244 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:49:20,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:49:20,247 INFO L85 PathProgramCache]: Analyzing trace with hash -909137831, now seen corresponding path program 1 times [2024-09-20 12:49:20,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:49:20,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524184792] [2024-09-20 12:49:20,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:49:20,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:49:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:20,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:49:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:20,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 12:49:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:20,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 12:49:20,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:49:20,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524184792] [2024-09-20 12:49:20,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524184792] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:49:20,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 12:49:20,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 12:49:20,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455299034] [2024-09-20 12:49:20,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:49:20,367 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-20 12:49:20,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:49:20,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-20 12:49:20,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 12:49:20,384 INFO L87 Difference]: Start difference. First operand has 33 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 12:49:20,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:49:20,409 INFO L93 Difference]: Finished difference Result 58 states and 92 transitions. [2024-09-20 12:49:20,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-20 12:49:20,411 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-20 12:49:20,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:49:20,416 INFO L225 Difference]: With dead ends: 58 [2024-09-20 12:49:20,416 INFO L226 Difference]: Without dead ends: 29 [2024-09-20 12:49:20,418 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 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 12:49:20,420 INFO L434 NwaCegarLoop]: 39 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, 39 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 12:49:20,421 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:49:20,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-20 12:49:20,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-09-20 12:49:20,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 12:49:20,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2024-09-20 12:49:20,446 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 16 [2024-09-20 12:49:20,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:49:20,446 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2024-09-20 12:49:20,447 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 12:49:20,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:49:20,447 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2024-09-20 12:49:20,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-20 12:49:20,448 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:49:20,448 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:49:20,448 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 12:49:20,448 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:49:20,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:49:20,449 INFO L85 PathProgramCache]: Analyzing trace with hash -229079461, now seen corresponding path program 1 times [2024-09-20 12:49:20,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:49:20,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562223572] [2024-09-20 12:49:20,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:49:20,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:49:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:20,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:49:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:20,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 12:49:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:20,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 12:49:20,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:49:20,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562223572] [2024-09-20 12:49:20,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562223572] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:49:20,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 12:49:20,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 12:49:20,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553884203] [2024-09-20 12:49:20,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:49:20,582 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 12:49:20,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:49:20,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 12:49:20,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 12:49:20,584 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 12:49:20,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:49:20,665 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2024-09-20 12:49:20,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 12:49:20,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-20 12:49:20,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:49:20,667 INFO L225 Difference]: With dead ends: 42 [2024-09-20 12:49:20,667 INFO L226 Difference]: Without dead ends: 40 [2024-09-20 12:49:20,667 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 12:49:20,668 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 114 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 [2024-09-20 12:49:20,669 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 114 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:49:20,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-20 12:49:20,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2024-09-20 12:49:20,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 12:49:20,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2024-09-20 12:49:20,676 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 16 [2024-09-20 12:49:20,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:49:20,676 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2024-09-20 12:49:20,676 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 12:49:20,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:49:20,677 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2024-09-20 12:49:20,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-20 12:49:20,677 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:49:20,677 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:49:20,677 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-20 12:49:20,678 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:49:20,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:49:20,678 INFO L85 PathProgramCache]: Analyzing trace with hash 520476838, now seen corresponding path program 1 times [2024-09-20 12:49:20,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:49:20,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210262996] [2024-09-20 12:49:20,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:49:20,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:49:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:20,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:49:20,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:20,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 12:49:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:20,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-20 12:49:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:20,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 12:49:20,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:49:20,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210262996] [2024-09-20 12:49:20,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210262996] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:49:20,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 12:49:20,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 12:49:20,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438693044] [2024-09-20 12:49:20,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:49:20,773 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 12:49:20,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:49:20,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 12:49:20,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 12:49:20,774 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-20 12:49:20,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:49:20,817 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2024-09-20 12:49:20,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 12:49:20,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-20 12:49:20,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:49:20,819 INFO L225 Difference]: With dead ends: 46 [2024-09-20 12:49:20,821 INFO L226 Difference]: Without dead ends: 44 [2024-09-20 12:49:20,821 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 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 12:49:20,822 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:49:20,824 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 111 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:49:20,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-20 12:49:20,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2024-09-20 12:49:20,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 12:49:20,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-09-20 12:49:20,830 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 21 [2024-09-20 12:49:20,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:49:20,830 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-09-20 12:49:20,830 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-20 12:49:20,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:49:20,831 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-09-20 12:49:20,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-20 12:49:20,831 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:49:20,832 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:49:20,832 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-20 12:49:20,832 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:49:20,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:49:20,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1140086011, now seen corresponding path program 1 times [2024-09-20 12:49:20,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:49:20,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490675761] [2024-09-20 12:49:20,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:49:20,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:49:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 12:49:20,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [719314744] [2024-09-20 12:49:20,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:49:20,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:49:20,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:49:20,846 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 12:49:20,847 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 12:49:20,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:20,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-20 12:49:20,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:49:20,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 12:49:20,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 12:49:20,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:49:20,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490675761] [2024-09-20 12:49:20,949 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 12:49:20,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719314744] [2024-09-20 12:49:20,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719314744] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:49:20,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 12:49:20,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 12:49:20,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289162086] [2024-09-20 12:49:20,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:49:20,954 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 12:49:20,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:49:20,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 12:49:20,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 12:49:20,954 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-20 12:49:21,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:49:21,014 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2024-09-20 12:49:21,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 12:49:21,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2024-09-20 12:49:21,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:49:21,015 INFO L225 Difference]: With dead ends: 63 [2024-09-20 12:49:21,015 INFO L226 Difference]: Without dead ends: 50 [2024-09-20 12:49:21,016 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 12:49:21,016 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:49:21,017 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 113 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:49:21,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-20 12:49:21,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-09-20 12:49:21,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 29 states have internal predecessors, (33), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-20 12:49:21,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2024-09-20 12:49:21,026 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 26 [2024-09-20 12:49:21,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:49:21,026 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2024-09-20 12:49:21,026 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-20 12:49:21,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:49:21,026 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2024-09-20 12:49:21,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-20 12:49:21,027 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:49:21,027 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:49:21,040 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 12:49:21,229 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:49:21,230 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:49:21,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:49:21,230 INFO L85 PathProgramCache]: Analyzing trace with hash -975701997, now seen corresponding path program 1 times [2024-09-20 12:49:21,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:49:21,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667525587] [2024-09-20 12:49:21,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:49:21,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:49:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 12:49:21,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1341792036] [2024-09-20 12:49:21,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:49:21,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:49:21,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:49:21,245 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 12:49:21,258 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 12:49:21,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:21,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-20 12:49:21,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:49:21,387 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 12:49:21,391 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 12:49:21,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:49:21,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667525587] [2024-09-20 12:49:21,391 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 12:49:21,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341792036] [2024-09-20 12:49:21,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341792036] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:49:21,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 12:49:21,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 12:49:21,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147013080] [2024-09-20 12:49:21,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:49:21,392 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 12:49:21,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:49:21,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 12:49:21,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 12:49:21,393 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-20 12:49:21,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:49:21,458 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2024-09-20 12:49:21,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 12:49:21,458 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-09-20 12:49:21,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:49:21,459 INFO L225 Difference]: With dead ends: 63 [2024-09-20 12:49:21,459 INFO L226 Difference]: Without dead ends: 61 [2024-09-20 12:49:21,460 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 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 12:49:21,460 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:49:21,461 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 95 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:49:21,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-20 12:49:21,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2024-09-20 12:49:21,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 36 states have internal predecessors, (41), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 12:49:21,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2024-09-20 12:49:21,476 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 33 [2024-09-20 12:49:21,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:49:21,477 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2024-09-20 12:49:21,477 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-20 12:49:21,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:49:21,477 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2024-09-20 12:49:21,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-20 12:49:21,478 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:49:21,478 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:49:21,502 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 12:49:21,679 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:49:21,679 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:49:21,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:49:21,680 INFO L85 PathProgramCache]: Analyzing trace with hash -928833564, now seen corresponding path program 1 times [2024-09-20 12:49:21,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:49:21,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339900580] [2024-09-20 12:49:21,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:49:21,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:49:21,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 12:49:21,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2007566384] [2024-09-20 12:49:21,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:49:21,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:49:21,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:49:21,708 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 12:49:21,712 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 12:49:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:21,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-20 12:49:21,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:49:21,852 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-20 12:49:21,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:49:21,909 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-09-20 12:49:21,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:49:21,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339900580] [2024-09-20 12:49:21,910 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 12:49:21,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007566384] [2024-09-20 12:49:21,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007566384] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-20 12:49:21,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-20 12:49:21,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-20 12:49:21,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37010414] [2024-09-20 12:49:21,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:49:21,911 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 12:49:21,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:49:21,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 12:49:21,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-20 12:49:21,912 INFO L87 Difference]: Start difference. First operand 60 states and 75 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-20 12:49:21,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:49:21,955 INFO L93 Difference]: Finished difference Result 70 states and 87 transitions. [2024-09-20 12:49:21,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 12:49:21,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2024-09-20 12:49:21,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:49:21,958 INFO L225 Difference]: With dead ends: 70 [2024-09-20 12:49:21,958 INFO L226 Difference]: Without dead ends: 68 [2024-09-20 12:49:21,958 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-20 12:49:21,959 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:49:21,959 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 106 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:49:21,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-20 12:49:21,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2024-09-20 12:49:21,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 41 states have internal predecessors, (45), 20 states have call successors, (20), 9 states have call predecessors, (20), 8 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 12:49:21,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2024-09-20 12:49:21,968 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 43 [2024-09-20 12:49:21,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:49:21,969 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2024-09-20 12:49:21,969 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-20 12:49:21,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:49:21,969 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2024-09-20 12:49:21,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-20 12:49:21,970 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:49:21,970 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:49:21,985 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 12:49:22,171 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-20 12:49:22,171 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:49:22,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:49:22,172 INFO L85 PathProgramCache]: Analyzing trace with hash -238148106, now seen corresponding path program 1 times [2024-09-20 12:49:22,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:49:22,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475462296] [2024-09-20 12:49:22,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:49:22,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:49:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:22,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:49:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:22,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 12:49:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:22,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-20 12:49:22,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:22,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 12:49:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:22,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-20 12:49:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:22,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 12:49:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:22,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 12:49:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:22,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 12:49:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:22,315 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 12:49:22,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:49:22,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475462296] [2024-09-20 12:49:22,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475462296] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:49:22,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 12:49:22,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 12:49:22,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377161527] [2024-09-20 12:49:22,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:49:22,315 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 12:49:22,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:49:22,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 12:49:22,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 12:49:22,316 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-20 12:49:22,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:49:22,362 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2024-09-20 12:49:22,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 12:49:22,363 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 49 [2024-09-20 12:49:22,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:49:22,364 INFO L225 Difference]: With dead ends: 75 [2024-09-20 12:49:22,365 INFO L226 Difference]: Without dead ends: 63 [2024-09-20 12:49:22,365 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 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 12:49:22,366 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 3 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:49:22,367 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 123 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:49:22,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-20 12:49:22,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-09-20 12:49:22,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 39 states have internal predecessors, (42), 18 states have call successors, (18), 9 states have call predecessors, (18), 8 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 12:49:22,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2024-09-20 12:49:22,380 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 49 [2024-09-20 12:49:22,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:49:22,381 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2024-09-20 12:49:22,381 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-20 12:49:22,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:49:22,381 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2024-09-20 12:49:22,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-20 12:49:22,384 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:49:22,384 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:49:22,384 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-20 12:49:22,385 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:49:22,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:49:22,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1374799408, now seen corresponding path program 1 times [2024-09-20 12:49:22,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:49:22,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856815474] [2024-09-20 12:49:22,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:49:22,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:49:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 12:49:22,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1892778474] [2024-09-20 12:49:22,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:49:22,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:49:22,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:49:22,414 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 12:49:22,415 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 12:49:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:22,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-20 12:49:22,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:49:22,686 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-20 12:49:22,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:49:23,756 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-20 12:49:23,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:49:23,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856815474] [2024-09-20 12:49:23,757 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 12:49:23,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892778474] [2024-09-20 12:49:23,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892778474] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:49:23,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 12:49:23,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2024-09-20 12:49:23,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857709941] [2024-09-20 12:49:23,758 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 12:49:23,758 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-20 12:49:23,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:49:23,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-20 12:49:23,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-09-20 12:49:23,759 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-20 12:49:24,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:49:24,199 INFO L93 Difference]: Finished difference Result 138 states and 183 transitions. [2024-09-20 12:49:24,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-20 12:49:24,199 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) Word has length 63 [2024-09-20 12:49:24,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:49:24,201 INFO L225 Difference]: With dead ends: 138 [2024-09-20 12:49:24,201 INFO L226 Difference]: Without dead ends: 115 [2024-09-20 12:49:24,201 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-09-20 12:49:24,202 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 12:49:24,202 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 225 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 12:49:24,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-20 12:49:24,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2024-09-20 12:49:24,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 71 states have internal predecessors, (80), 34 states have call successors, (34), 13 states have call predecessors, (34), 12 states have return successors, (32), 28 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-20 12:49:24,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 146 transitions. [2024-09-20 12:49:24,242 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 146 transitions. Word has length 63 [2024-09-20 12:49:24,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:49:24,243 INFO L474 AbstractCegarLoop]: Abstraction has 113 states and 146 transitions. [2024-09-20 12:49:24,243 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-20 12:49:24,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:49:24,243 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 146 transitions. [2024-09-20 12:49:24,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-20 12:49:24,247 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:49:24,247 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:49:24,260 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-20 12:49:24,451 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:49:24,452 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:49:24,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:49:24,452 INFO L85 PathProgramCache]: Analyzing trace with hash -2048390162, now seen corresponding path program 1 times [2024-09-20 12:49:24,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:49:24,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567662549] [2024-09-20 12:49:24,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:49:24,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:49:24,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 12:49:24,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1581157078] [2024-09-20 12:49:24,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:49:24,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:49:24,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:49:24,468 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) [2024-09-20 12:49:24,470 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-20 12:49:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:24,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-20 12:49:24,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:49:24,677 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-20 12:49:24,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:49:25,049 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-20 12:49:25,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:49:25,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567662549] [2024-09-20 12:49:25,050 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 12:49:25,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581157078] [2024-09-20 12:49:25,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581157078] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:49:25,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 12:49:25,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-09-20 12:49:25,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909431930] [2024-09-20 12:49:25,051 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 12:49:25,051 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-20 12:49:25,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:49:25,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-20 12:49:25,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-09-20 12:49:25,052 INFO L87 Difference]: Start difference. First operand 113 states and 146 transitions. Second operand has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2024-09-20 12:49:25,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:49:25,535 INFO L93 Difference]: Finished difference Result 168 states and 221 transitions. [2024-09-20 12:49:25,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-20 12:49:25,536 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) Word has length 74 [2024-09-20 12:49:25,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:49:25,537 INFO L225 Difference]: With dead ends: 168 [2024-09-20 12:49:25,537 INFO L226 Difference]: Without dead ends: 136 [2024-09-20 12:49:25,537 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-09-20 12:49:25,538 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 15 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 12:49:25,538 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 195 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 12:49:25,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-20 12:49:25,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 110. [2024-09-20 12:49:25,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 70 states have internal predecessors, (76), 31 states have call successors, (31), 14 states have call predecessors, (31), 13 states have return successors, (29), 25 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-20 12:49:25,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 136 transitions. [2024-09-20 12:49:25,559 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 136 transitions. Word has length 74 [2024-09-20 12:49:25,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:49:25,559 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 136 transitions. [2024-09-20 12:49:25,559 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2024-09-20 12:49:25,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:49:25,560 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 136 transitions. [2024-09-20 12:49:25,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-20 12:49:25,561 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:49:25,561 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:49:25,573 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-20 12:49:25,764 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:49:25,765 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:49:25,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:49:25,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1556827571, now seen corresponding path program 1 times [2024-09-20 12:49:25,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:49:25,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947355211] [2024-09-20 12:49:25,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:49:25,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:49:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:25,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:49:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:25,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 12:49:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:25,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-20 12:49:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:25,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 12:49:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:25,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-20 12:49:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:25,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 12:49:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:25,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 12:49:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:25,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 12:49:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:25,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 12:49:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:25,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 12:49:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:25,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 12:49:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:25,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 12:49:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:25,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 12:49:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:25,997 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-20 12:49:25,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:49:25,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947355211] [2024-09-20 12:49:25,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947355211] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:49:25,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216659421] [2024-09-20 12:49:25,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:49:25,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:49:25,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:49:26,003 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) [2024-09-20 12:49:26,007 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-20 12:49:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:49:26,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-20 12:49:26,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:49:26,212 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-20 12:49:26,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:49:26,495 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-20 12:49:26,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216659421] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:49:26,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:49:26,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-09-20 12:49:26,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662423220] [2024-09-20 12:49:26,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:49:26,497 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-20 12:49:26,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:49:26,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-20 12:49:26,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-09-20 12:49:26,498 INFO L87 Difference]: Start difference. First operand 110 states and 136 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) [2024-09-20 12:49:26,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:49:26,637 INFO L93 Difference]: Finished difference Result 129 states and 155 transitions. [2024-09-20 12:49:26,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-20 12:49:26,638 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) Word has length 79 [2024-09-20 12:49:26,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:49:26,639 INFO L225 Difference]: With dead ends: 129 [2024-09-20 12:49:26,639 INFO L226 Difference]: Without dead ends: 100 [2024-09-20 12:49:26,639 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 177 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-09-20 12:49:26,640 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:49:26,640 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 225 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:49:26,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-09-20 12:49:26,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-09-20 12:49:26,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 63 states have internal predecessors, (67), 26 states have call successors, (26), 14 states have call predecessors, (26), 13 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-20 12:49:26,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2024-09-20 12:49:26,659 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 79 [2024-09-20 12:49:26,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:49:26,659 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2024-09-20 12:49:26,659 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) [2024-09-20 12:49:26,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:49:26,660 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2024-09-20 12:49:26,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-20 12:49:26,664 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:49:26,664 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:49:26,676 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-20 12:49:26,867 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-20 12:49:26,868 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:49:26,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:49:26,869 INFO L85 PathProgramCache]: Analyzing trace with hash -802122381, now seen corresponding path program 2 times [2024-09-20 12:49:26,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:49:26,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703964340] [2024-09-20 12:49:26,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:49:26,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:49:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 12:49:26,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [153840993] [2024-09-20 12:49:26,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 12:49:26,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:49:26,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:49:26,893 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:49:26,894 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-20 12:49:26,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 12:49:26,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:49:26,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-20 12:49:26,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:49:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 46 proven. 40 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-20 12:49:27,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:49:42,846 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 46 proven. 40 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-20 12:49:42,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:49:42,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703964340] [2024-09-20 12:49:42,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 12:49:42,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153840993] [2024-09-20 12:49:42,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153840993] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:49:42,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 12:49:42,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22 [2024-09-20 12:49:42,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046970660] [2024-09-20 12:49:42,847 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 12:49:42,848 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-20 12:49:42,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:49:42,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-20 12:49:42,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2024-09-20 12:49:42,849 INFO L87 Difference]: Start difference. First operand 100 states and 117 transitions. Second operand has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2024-09-20 12:49:55,255 WARN L293 SmtUtils]: Spent 12.07s on a formula simplification. DAG size of input: 171 DAG size of output: 83 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-20 12:49:56,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 12:49:58,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 12:50:14,914 WARN L293 SmtUtils]: Spent 11.05s on a formula simplification. DAG size of input: 156 DAG size of output: 91 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-20 12:50:15,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:50:15,958 INFO L93 Difference]: Finished difference Result 203 states and 265 transitions. [2024-09-20 12:50:15,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-20 12:50:15,959 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 93 [2024-09-20 12:50:15,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:50:15,960 INFO L225 Difference]: With dead ends: 203 [2024-09-20 12:50:15,960 INFO L226 Difference]: Without dead ends: 170 [2024-09-20 12:50:15,961 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 29.0s TimeCoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2024-09-20 12:50:15,961 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 66 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-09-20 12:50:15,961 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 513 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-09-20 12:50:15,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-09-20 12:50:16,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 166. [2024-09-20 12:50:16,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.183673469387755) internal successors, (116), 105 states have internal predecessors, (116), 51 states have call successors, (51), 17 states have call predecessors, (51), 16 states have return successors, (49), 43 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-20 12:50:16,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 216 transitions. [2024-09-20 12:50:16,006 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 216 transitions. Word has length 93 [2024-09-20 12:50:16,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:50:16,006 INFO L474 AbstractCegarLoop]: Abstraction has 166 states and 216 transitions. [2024-09-20 12:50:16,007 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2024-09-20 12:50:16,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:16,007 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 216 transitions. [2024-09-20 12:50:16,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-20 12:50:16,008 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:50:16,008 INFO L216 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:50:16,020 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-20 12:50:16,208 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:50:16,209 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:50:16,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:16,209 INFO L85 PathProgramCache]: Analyzing trace with hash 644553835, now seen corresponding path program 2 times [2024-09-20 12:50:16,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:50:16,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016584407] [2024-09-20 12:50:16,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:50:16,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:50:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 12:50:16,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [808416733] [2024-09-20 12:50:16,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 12:50:16,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:50:16,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:50:16,232 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:50:16,232 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-20 12:50:16,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 12:50:16,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:50:16,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-20 12:50:16,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:50:16,612 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 50 proven. 50 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-09-20 12:50:16,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:50:19,565 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 50 proven. 50 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-09-20 12:50:19,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:50:19,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016584407] [2024-09-20 12:50:19,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 12:50:19,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808416733] [2024-09-20 12:50:19,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808416733] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:50:19,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 12:50:19,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2024-09-20 12:50:19,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117118813] [2024-09-20 12:50:19,567 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 12:50:19,567 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-20 12:50:19,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:50:19,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-20 12:50:19,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2024-09-20 12:50:19,569 INFO L87 Difference]: Start difference. First operand 166 states and 216 transitions. Second operand has 27 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 16 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) [2024-09-20 12:50:23,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 12:50:24,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:50:24,082 INFO L93 Difference]: Finished difference Result 246 states and 327 transitions. [2024-09-20 12:50:24,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-20 12:50:24,083 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 16 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) Word has length 104 [2024-09-20 12:50:24,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:50:24,086 INFO L225 Difference]: With dead ends: 246 [2024-09-20 12:50:24,087 INFO L226 Difference]: Without dead ends: 185 [2024-09-20 12:50:24,087 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=270, Invalid=852, Unknown=0, NotChecked=0, Total=1122 [2024-09-20 12:50:24,088 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 34 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:50:24,088 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 422 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-09-20 12:50:24,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-09-20 12:50:24,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 161. [2024-09-20 12:50:24,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 96 states have (on average 1.1666666666666667) internal successors, (112), 103 states have internal predecessors, (112), 47 states have call successors, (47), 18 states have call predecessors, (47), 17 states have return successors, (45), 39 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-20 12:50:24,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 204 transitions. [2024-09-20 12:50:24,149 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 204 transitions. Word has length 104 [2024-09-20 12:50:24,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:50:24,149 INFO L474 AbstractCegarLoop]: Abstraction has 161 states and 204 transitions. [2024-09-20 12:50:24,150 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 16 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) [2024-09-20 12:50:24,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:24,150 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 204 transitions. [2024-09-20 12:50:24,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-20 12:50:24,151 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:50:24,151 INFO L216 NwaCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:50:24,163 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-20 12:50:24,354 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:50:24,355 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:50:24,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:24,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1191181482, now seen corresponding path program 2 times [2024-09-20 12:50:24,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:50:24,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458171365] [2024-09-20 12:50:24,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:50:24,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:50:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:24,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:50:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:24,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 12:50:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:24,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-20 12:50:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:24,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 12:50:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:24,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-20 12:50:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:24,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 12:50:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:24,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 12:50:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:24,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 12:50:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:24,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 12:50:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:24,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 12:50:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:24,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 12:50:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:24,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 12:50:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:24,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 12:50:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:24,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 12:50:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:24,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 12:50:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:24,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 12:50:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:24,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 12:50:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:24,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 12:50:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:24,675 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-20 12:50:24,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:50:24,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458171365] [2024-09-20 12:50:24,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458171365] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:50:24,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624496745] [2024-09-20 12:50:24,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 12:50:24,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:50:24,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:50:24,678 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:50:24,679 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-20 12:50:24,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 12:50:24,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:50:24,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-20 12:50:24,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:50:24,930 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-09-20 12:50:24,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:50:25,877 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-09-20 12:50:25,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624496745] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:50:25,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:50:25,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 12] total 25 [2024-09-20 12:50:25,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857575064] [2024-09-20 12:50:25,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:50:25,878 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-20 12:50:25,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:50:25,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-20 12:50:25,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2024-09-20 12:50:25,880 INFO L87 Difference]: Start difference. First operand 161 states and 204 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 18 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 18 states have call predecessors, (49), 18 states have call successors, (49) [2024-09-20 12:50:26,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:50:26,249 INFO L93 Difference]: Finished difference Result 187 states and 231 transitions. [2024-09-20 12:50:26,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-20 12:50:26,250 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 18 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 18 states have call predecessors, (49), 18 states have call successors, (49) Word has length 109 [2024-09-20 12:50:26,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:50:26,251 INFO L225 Difference]: With dead ends: 187 [2024-09-20 12:50:26,251 INFO L226 Difference]: Without dead ends: 145 [2024-09-20 12:50:26,251 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2024-09-20 12:50:26,252 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 21 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 12:50:26,252 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 334 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 12:50:26,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-09-20 12:50:26,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2024-09-20 12:50:26,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 84 states have (on average 1.1428571428571428) internal successors, (96), 89 states have internal predecessors, (96), 38 states have call successors, (38), 17 states have call predecessors, (38), 16 states have return successors, (36), 32 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-20 12:50:26,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 170 transitions. [2024-09-20 12:50:26,303 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 170 transitions. Word has length 109 [2024-09-20 12:50:26,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:50:26,303 INFO L474 AbstractCegarLoop]: Abstraction has 139 states and 170 transitions. [2024-09-20 12:50:26,303 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 18 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 18 states have call predecessors, (49), 18 states have call successors, (49) [2024-09-20 12:50:26,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:26,304 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 170 transitions. [2024-09-20 12:50:26,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-09-20 12:50:26,304 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:50:26,305 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:50:26,317 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-20 12:50:26,505 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-20 12:50:26,505 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:50:26,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:26,506 INFO L85 PathProgramCache]: Analyzing trace with hash -626389098, now seen corresponding path program 1 times [2024-09-20 12:50:26,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:50:26,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501821412] [2024-09-20 12:50:26,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:50:26,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:50:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:26,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:50:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:26,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 12:50:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:26,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-20 12:50:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:26,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 12:50:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:26,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-20 12:50:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:26,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 12:50:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:26,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 12:50:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:26,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 12:50:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:26,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 12:50:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:26,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 12:50:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:26,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 12:50:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:26,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 12:50:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:26,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 12:50:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:26,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 12:50:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:26,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 12:50:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:26,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 12:50:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:26,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 12:50:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:26,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 12:50:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:26,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 12:50:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:26,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 12:50:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:26,681 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 51 proven. 28 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 12:50:26,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:50:26,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501821412] [2024-09-20 12:50:26,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501821412] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:50:26,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817138369] [2024-09-20 12:50:26,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:50:26,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:50:26,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:50:26,683 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:50:26,684 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-20 12:50:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:26,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-20 12:50:26,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:50:26,776 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 66 proven. 13 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 12:50:26,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:50:26,899 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 66 proven. 13 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 12:50:26,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817138369] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:50:26,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:50:26,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 9 [2024-09-20 12:50:26,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076602268] [2024-09-20 12:50:26,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:50:26,900 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-20 12:50:26,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:50:26,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-20 12:50:26,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-09-20 12:50:26,901 INFO L87 Difference]: Start difference. First operand 139 states and 170 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 9 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2024-09-20 12:50:27,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:50:27,023 INFO L93 Difference]: Finished difference Result 155 states and 191 transitions. [2024-09-20 12:50:27,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-20 12:50:27,023 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 9 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) Word has length 121 [2024-09-20 12:50:27,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:50:27,025 INFO L225 Difference]: With dead ends: 155 [2024-09-20 12:50:27,025 INFO L226 Difference]: Without dead ends: 148 [2024-09-20 12:50:27,025 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 276 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-09-20 12:50:27,025 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 5 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:50:27,026 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 185 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:50:27,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-09-20 12:50:27,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2024-09-20 12:50:27,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 88 states have (on average 1.1363636363636365) internal successors, (100), 93 states have internal predecessors, (100), 42 states have call successors, (42), 17 states have call predecessors, (42), 16 states have return successors, (40), 36 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-20 12:50:27,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 182 transitions. [2024-09-20 12:50:27,082 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 182 transitions. Word has length 121 [2024-09-20 12:50:27,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:50:27,083 INFO L474 AbstractCegarLoop]: Abstraction has 147 states and 182 transitions. [2024-09-20 12:50:27,083 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 9 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2024-09-20 12:50:27,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:27,083 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 182 transitions. [2024-09-20 12:50:27,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-09-20 12:50:27,084 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:50:27,084 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:50:27,096 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-20 12:50:27,284 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-20 12:50:27,285 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:50:27,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:27,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1967500462, now seen corresponding path program 1 times [2024-09-20 12:50:27,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:50:27,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811730486] [2024-09-20 12:50:27,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:50:27,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:50:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:50:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 12:50:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-20 12:50:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 12:50:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-20 12:50:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 12:50:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 12:50:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 12:50:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 12:50:27,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 12:50:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 12:50:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 12:50:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 12:50:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 12:50:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 12:50:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 12:50:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 12:50:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 12:50:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 12:50:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 12:50:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,466 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 63 proven. 15 refuted. 0 times theorem prover too weak. 621 trivial. 0 not checked. [2024-09-20 12:50:27,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:50:27,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811730486] [2024-09-20 12:50:27,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811730486] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:50:27,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938863657] [2024-09-20 12:50:27,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:50:27,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:50:27,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:50:27,468 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:50:27,468 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-20 12:50:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:50:27,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-20 12:50:27,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:50:27,607 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2024-09-20 12:50:27,607 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 12:50:27,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938863657] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:50:27,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-20 12:50:27,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2024-09-20 12:50:27,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993778937] [2024-09-20 12:50:27,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:50:27,608 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-20 12:50:27,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:50:27,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-20 12:50:27,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-09-20 12:50:27,609 INFO L87 Difference]: Start difference. First operand 147 states and 182 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-20 12:50:27,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:50:27,733 INFO L93 Difference]: Finished difference Result 190 states and 238 transitions. [2024-09-20 12:50:27,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-20 12:50:27,733 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 123 [2024-09-20 12:50:27,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:50:27,734 INFO L225 Difference]: With dead ends: 190 [2024-09-20 12:50:27,734 INFO L226 Difference]: Without dead ends: 147 [2024-09-20 12:50:27,735 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-09-20 12:50:27,736 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 14 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:50:27,736 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 125 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:50:27,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-09-20 12:50:27,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 130. [2024-09-20 12:50:27,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 79 states have (on average 1.1139240506329113) internal successors, (88), 83 states have internal predecessors, (88), 34 states have call successors, (34), 17 states have call predecessors, (34), 16 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-20 12:50:27,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 154 transitions. [2024-09-20 12:50:27,788 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 154 transitions. Word has length 123 [2024-09-20 12:50:27,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:50:27,788 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 154 transitions. [2024-09-20 12:50:27,788 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-20 12:50:27,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:27,789 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 154 transitions. [2024-09-20 12:50:27,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-09-20 12:50:27,790 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:50:27,790 INFO L216 NwaCegarLoop]: trace histogram [21, 20, 20, 4, 4, 4, 4, 4, 4, 4, 4, 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 12:50:27,802 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-20 12:50:27,990 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-20 12:50:27,990 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:50:27,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:27,991 INFO L85 PathProgramCache]: Analyzing trace with hash -478157618, now seen corresponding path program 3 times [2024-09-20 12:50:27,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:50:27,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873083694] [2024-09-20 12:50:27,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:50:27,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:50:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 12:50:28,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [169110646] [2024-09-20 12:50:28,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 12:50:28,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:50:28,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:50:28,032 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:50:28,033 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-20 12:50:28,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-20 12:50:28,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:50:28,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-20 12:50:28,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:50:28,183 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 163 proven. 53 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2024-09-20 12:50:28,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:50:28,311 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-09-20 12:50:28,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:50:28,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873083694] [2024-09-20 12:50:28,311 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 12:50:28,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169110646] [2024-09-20 12:50:28,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169110646] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:50:28,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 12:50:28,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2024-09-20 12:50:28,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860967150] [2024-09-20 12:50:28,312 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 12:50:28,312 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-20 12:50:28,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:50:28,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-20 12:50:28,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-09-20 12:50:28,313 INFO L87 Difference]: Start difference. First operand 130 states and 154 transitions. Second operand has 16 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 7 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) [2024-09-20 12:50:28,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:50:28,495 INFO L93 Difference]: Finished difference Result 130 states and 154 transitions. [2024-09-20 12:50:28,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-20 12:50:28,495 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 7 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) Word has length 134 [2024-09-20 12:50:28,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:50:28,496 INFO L225 Difference]: With dead ends: 130 [2024-09-20 12:50:28,496 INFO L226 Difference]: Without dead ends: 0 [2024-09-20 12:50:28,497 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2024-09-20 12:50:28,497 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 31 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:50:28,497 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 161 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:50:28,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-20 12:50:28,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-20 12:50:28,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 12:50:28,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-20 12:50:28,498 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 134 [2024-09-20 12:50:28,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:50:28,498 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-20 12:50:28,498 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 7 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) [2024-09-20 12:50:28,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:50:28,499 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-20 12:50:28,499 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-20 12:50:28,501 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-20 12:50:28,513 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-20 12:50:28,704 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-20 12:50:28,707 INFO L408 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:50:28,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-20 12:50:30,851 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-20 12:50:30,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 12:50:30 BoogieIcfgContainer [2024-09-20 12:50:30,867 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-20 12:50:30,868 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-20 12:50:30,868 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-20 12:50:30,868 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-20 12:50:30,868 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:49:20" (3/4) ... [2024-09-20 12:50:30,870 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-20 12:50:30,911 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-20 12:50:30,911 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-20 12:50:30,912 INFO L158 Benchmark]: Toolchain (without parser) took 71346.00ms. Allocated memory was 201.3MB in the beginning and 507.5MB in the end (delta: 306.2MB). Free memory was 129.8MB in the beginning and 315.4MB in the end (delta: -185.6MB). Peak memory consumption was 123.7MB. Max. memory is 16.1GB. [2024-09-20 12:50:30,912 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 159.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 12:50:30,912 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.39ms. Allocated memory is still 201.3MB. Free memory was 129.5MB in the beginning and 117.8MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-20 12:50:30,913 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.44ms. Allocated memory is still 201.3MB. Free memory was 117.8MB in the beginning and 116.9MB in the end (delta: 901.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 12:50:30,913 INFO L158 Benchmark]: Boogie Preprocessor took 25.20ms. Allocated memory is still 201.3MB. Free memory was 116.9MB in the beginning and 115.1MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 12:50:30,913 INFO L158 Benchmark]: RCFGBuilder took 340.01ms. Allocated memory is still 201.3MB. Free memory was 115.1MB in the beginning and 165.5MB in the end (delta: -50.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-20 12:50:30,914 INFO L158 Benchmark]: TraceAbstraction took 70692.98ms. Allocated memory was 201.3MB in the beginning and 507.5MB in the end (delta: 306.2MB). Free memory was 165.5MB in the beginning and 317.5MB in the end (delta: -152.0MB). Peak memory consumption was 303.3MB. Max. memory is 16.1GB. [2024-09-20 12:50:30,914 INFO L158 Benchmark]: Witness Printer took 43.27ms. Allocated memory is still 507.5MB. Free memory was 317.5MB in the beginning and 315.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 12:50:30,915 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 159.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 214.39ms. Allocated memory is still 201.3MB. Free memory was 129.5MB in the beginning and 117.8MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.44ms. Allocated memory is still 201.3MB. Free memory was 117.8MB in the beginning and 116.9MB in the end (delta: 901.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.20ms. Allocated memory is still 201.3MB. Free memory was 116.9MB in the beginning and 115.1MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 340.01ms. Allocated memory is still 201.3MB. Free memory was 115.1MB in the beginning and 165.5MB in the end (delta: -50.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 70692.98ms. Allocated memory was 201.3MB in the beginning and 507.5MB in the end (delta: 306.2MB). Free memory was 165.5MB in the beginning and 317.5MB in the end (delta: -152.0MB). Peak memory consumption was 303.3MB. Max. memory is 16.1GB. * Witness Printer took 43.27ms. Allocated memory is still 507.5MB. Free memory was 317.5MB in the beginning and 315.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 68.5s, OverallIterations: 16, TraceHistogramMax: 21, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 39.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 319 SdHoareTripleChecker+Valid, 11.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 264 mSDsluCounter, 3086 SdHoareTripleChecker+Invalid, 11.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2515 mSDsCounter, 424 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2567 IncrementalHoareTripleChecker+Invalid, 2991 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 424 mSolverCounterUnsat, 571 mSDtfsCounter, 2567 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2069 GetRequests, 1867 SyntacticMatches, 10 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 33.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=11, InterpolantAutomatonStates: 150, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 16 MinimizatonAttempts, 96 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 24.6s InterpolantComputationTime, 2106 NumberOfCodeBlocks, 2036 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 2327 ConstructedInterpolants, 0 QuantifiedInterpolants, 21218 SizeOfPredicates, 25 NumberOfNonLiveVariables, 2338 ConjunctsInSsa, 295 ConjunctsInUnsatCore, 29 InterpolantComputations, 8 PerfectInterpolantSequences, 9533/10134 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: ((((d == p) && (1 <= p)) && (((long long) A + d) == (((long long) q + p) + r))) && (B == 1)) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((A == r) && (p == 2)) && (d == 2)) && (q == 0)) && (B == 1)) || (((((((A == r) && (((long long) A + d) == ((long long) p + r))) && ((d / 2) <= r)) && ((d % 2) == 0)) && (q == 0)) && (B == 1)) && (4 <= (d / 2)))) || ((((((A == r) && (d == 4)) && (2 <= r)) && (q == 0)) && (B == 1)) && (p == 4))) || (((((A == r) && (d == 1)) && (q == 0)) && (B == 1)) && (p == 1))) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (\old(cond) != 0) Ensures: (\old(cond) != 0) RESULT: Ultimate proved your program to be correct! [2024-09-20 12:50:30,981 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE