./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 27b49876 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-27b4987-m [2024-09-21 12:11:35,570 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-21 12:11:35,643 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-21 12:11:35,648 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-21 12:11:35,649 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-21 12:11:35,677 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-21 12:11:35,678 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-21 12:11:35,678 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-21 12:11:35,678 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-21 12:11:35,679 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-21 12:11:35,681 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-21 12:11:35,681 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-21 12:11:35,682 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-21 12:11:35,686 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-21 12:11:35,686 INFO L153 SettingsManager]: * Use SBE=true [2024-09-21 12:11:35,687 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-21 12:11:35,687 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-21 12:11:35,687 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-21 12:11:35,687 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-21 12:11:35,687 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-21 12:11:35,688 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-21 12:11:35,688 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-21 12:11:35,689 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-21 12:11:35,689 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-21 12:11:35,689 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-21 12:11:35,690 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-21 12:11:35,690 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-21 12:11:35,691 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-21 12:11:35,691 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-21 12:11:35,692 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-21 12:11:35,692 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-21 12:11:35,693 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-21 12:11:35,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 12:11:35,694 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-21 12:11:35,694 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-21 12:11:35,694 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-21 12:11:35,695 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-21 12:11:35,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-21 12:11:35,695 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-21 12:11:35,695 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-21 12:11:35,695 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-21 12:11:35,696 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-21 12:11:35,696 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 174cfd8cb6426614b32355f584844d4fc6265ba8fd3c3cda6c788ade64de4fc0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-21 12:11:35,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-21 12:11:35,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-21 12:11:35,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-21 12:11:35,947 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-21 12:11:35,948 INFO L274 PluginConnector]: CDTParser initialized [2024-09-21 12:11:35,949 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.c [2024-09-21 12:11:37,329 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-21 12:11:37,495 INFO L384 CDTParser]: Found 1 translation units. [2024-09-21 12:11:37,495 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.c [2024-09-21 12:11:37,503 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/441e0c573/594f9957250c409194002ba3cd918d57/FLAGa9de6ec17 [2024-09-21 12:11:37,520 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/441e0c573/594f9957250c409194002ba3cd918d57 [2024-09-21 12:11:37,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-21 12:11:37,525 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-21 12:11:37,528 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-21 12:11:37,528 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-21 12:11:37,534 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-21 12:11:37,535 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:11:37" (1/1) ... [2024-09-21 12:11:37,535 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4288adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:37, skipping insertion in model container [2024-09-21 12:11:37,536 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:11:37" (1/1) ... [2024-09-21 12:11:37,560 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-21 12:11:37,728 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] [2024-09-21 12:11:37,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 12:11:37,752 INFO L200 MainTranslator]: Completed pre-run [2024-09-21 12:11:37,767 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] [2024-09-21 12:11:37,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 12:11:37,799 INFO L204 MainTranslator]: Completed translation [2024-09-21 12:11:37,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:37 WrapperNode [2024-09-21 12:11:37,800 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-21 12:11:37,801 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-21 12:11:37,801 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-21 12:11:37,801 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-21 12:11:37,808 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:37" (1/1) ... [2024-09-21 12:11:37,815 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:37" (1/1) ... [2024-09-21 12:11:37,822 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-21 12:11:37,823 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-21 12:11:37,823 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-21 12:11:37,823 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-21 12:11:37,824 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-21 12:11:37,834 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:37" (1/1) ... [2024-09-21 12:11:37,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:37" (1/1) ... [2024-09-21 12:11:37,840 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:37" (1/1) ... [2024-09-21 12:11:37,858 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]. [2024-09-21 12:11:37,858 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:37" (1/1) ... [2024-09-21 12:11:37,858 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:37" (1/1) ... [2024-09-21 12:11:37,861 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:37" (1/1) ... [2024-09-21 12:11:37,866 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:37" (1/1) ... [2024-09-21 12:11:37,867 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:37" (1/1) ... [2024-09-21 12:11:37,868 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:37" (1/1) ... [2024-09-21 12:11:37,870 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-21 12:11:37,871 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-21 12:11:37,871 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-21 12:11:37,871 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-21 12:11:37,872 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:37" (1/1) ... [2024-09-21 12:11:37,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 12:11:37,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:11:37,925 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) [2024-09-21 12:11:37,928 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 [2024-09-21 12:11:37,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-21 12:11:37,974 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-21 12:11:37,974 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-21 12:11:37,974 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-21 12:11:37,974 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-21 12:11:37,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-21 12:11:37,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-21 12:11:37,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-21 12:11:37,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-21 12:11:37,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-21 12:11:37,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-21 12:11:37,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-21 12:11:37,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-21 12:11:38,044 INFO L242 CfgBuilder]: Building ICFG [2024-09-21 12:11:38,047 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-21 12:11:38,245 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-21 12:11:38,245 INFO L291 CfgBuilder]: Performing block encoding [2024-09-21 12:11:38,279 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-21 12:11:38,280 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-21 12:11:38,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:11:38 BoogieIcfgContainer [2024-09-21 12:11:38,280 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-21 12:11:38,282 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-21 12:11:38,282 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-21 12:11:38,285 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-21 12:11:38,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:11:37" (1/3) ... [2024-09-21 12:11:38,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a874edf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:11:38, skipping insertion in model container [2024-09-21 12:11:38,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:11:37" (2/3) ... [2024-09-21 12:11:38,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a874edf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:11:38, skipping insertion in model container [2024-09-21 12:11:38,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:11:38" (3/3) ... [2024-09-21 12:11:38,288 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound10.c [2024-09-21 12:11:38,302 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-21 12:11:38,302 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-21 12:11:38,358 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-21 12:11:38,364 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;@77d99058, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-21 12:11:38,364 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-21 12:11:38,368 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) [2024-09-21 12:11:38,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-21 12:11:38,374 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:11:38,375 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:11:38,375 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:11:38,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:11:38,380 INFO L85 PathProgramCache]: Analyzing trace with hash -909137831, now seen corresponding path program 1 times [2024-09-21 12:11:38,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:11:38,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017573631] [2024-09-21 12:11:38,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:11:38,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:11:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:38,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:11:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:38,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:11:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:38,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 12:11:38,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:11:38,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017573631] [2024-09-21 12:11:38,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017573631] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 12:11:38,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 12:11:38,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-21 12:11:38,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115109460] [2024-09-21 12:11:38,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 12:11:38,560 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-21 12:11:38,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:11:38,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-21 12:11:38,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-21 12:11:38,581 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) [2024-09-21 12:11:38,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:11:38,607 INFO L93 Difference]: Finished difference Result 58 states and 92 transitions. [2024-09-21 12:11:38,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-21 12:11:38,610 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 [2024-09-21 12:11:38,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:11:38,616 INFO L225 Difference]: With dead ends: 58 [2024-09-21 12:11:38,616 INFO L226 Difference]: Without dead ends: 29 [2024-09-21 12:11:38,619 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 [2024-09-21 12:11:38,622 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 [2024-09-21 12:11:38,622 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] [2024-09-21 12:11:38,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-21 12:11:38,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-09-21 12:11:38,665 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) [2024-09-21 12:11:38,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2024-09-21 12:11:38,674 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 16 [2024-09-21 12:11:38,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:11:38,675 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2024-09-21 12:11:38,676 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) [2024-09-21 12:11:38,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:11:38,678 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2024-09-21 12:11:38,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-21 12:11:38,679 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:11:38,679 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:11:38,679 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-21 12:11:38,681 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:11:38,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:11:38,682 INFO L85 PathProgramCache]: Analyzing trace with hash -229079461, now seen corresponding path program 1 times [2024-09-21 12:11:38,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:11:38,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488646510] [2024-09-21 12:11:38,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:11:38,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:11:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:38,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:11:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:38,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:11:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:38,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 12:11:38,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:11:38,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488646510] [2024-09-21 12:11:38,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488646510] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 12:11:38,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 12:11:38,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-21 12:11:38,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076645907] [2024-09-21 12:11:38,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 12:11:38,932 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-21 12:11:38,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:11:38,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-21 12:11:38,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-21 12:11:38,934 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) [2024-09-21 12:11:39,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:11:39,023 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2024-09-21 12:11:39,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-21 12:11:39,023 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 [2024-09-21 12:11:39,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:11:39,024 INFO L225 Difference]: With dead ends: 42 [2024-09-21 12:11:39,025 INFO L226 Difference]: Without dead ends: 40 [2024-09-21 12:11:39,025 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 [2024-09-21 12:11:39,026 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:11:39,027 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 114 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 12:11:39,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-21 12:11:39,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2024-09-21 12:11:39,043 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) [2024-09-21 12:11:39,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2024-09-21 12:11:39,044 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 16 [2024-09-21 12:11:39,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:11:39,046 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2024-09-21 12:11:39,046 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) [2024-09-21 12:11:39,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:11:39,047 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2024-09-21 12:11:39,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-21 12:11:39,048 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:11:39,048 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] [2024-09-21 12:11:39,048 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-21 12:11:39,048 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:11:39,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:11:39,049 INFO L85 PathProgramCache]: Analyzing trace with hash 520476838, now seen corresponding path program 1 times [2024-09-21 12:11:39,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:11:39,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040296691] [2024-09-21 12:11:39,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:11:39,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:11:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:39,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:11:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:39,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:11:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:39,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-21 12:11:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:39,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 12:11:39,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:11:39,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040296691] [2024-09-21 12:11:39,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040296691] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 12:11:39,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 12:11:39,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-21 12:11:39,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486915285] [2024-09-21 12:11:39,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 12:11:39,199 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-21 12:11:39,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:11:39,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-21 12:11:39,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-21 12:11:39,202 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) [2024-09-21 12:11:39,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:11:39,277 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2024-09-21 12:11:39,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-21 12:11:39,278 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 [2024-09-21 12:11:39,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:11:39,279 INFO L225 Difference]: With dead ends: 46 [2024-09-21 12:11:39,280 INFO L226 Difference]: Without dead ends: 44 [2024-09-21 12:11:39,280 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 [2024-09-21 12:11:39,282 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:11:39,283 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 111 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 12:11:39,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-21 12:11:39,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2024-09-21 12:11:39,295 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) [2024-09-21 12:11:39,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-09-21 12:11:39,296 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 21 [2024-09-21 12:11:39,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:11:39,296 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-09-21 12:11:39,296 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) [2024-09-21 12:11:39,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:11:39,300 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-09-21 12:11:39,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-21 12:11:39,300 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:11:39,300 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] [2024-09-21 12:11:39,300 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-21 12:11:39,301 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:11:39,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:11:39,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1140086011, now seen corresponding path program 1 times [2024-09-21 12:11:39,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:11:39,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115459118] [2024-09-21 12:11:39,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:11:39,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:11:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 12:11:39,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [839618525] [2024-09-21 12:11:39,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:11:39,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:11:39,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:11:39,324 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) [2024-09-21 12:11:39,326 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-21 12:11:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:39,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-21 12:11:39,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:11:39,502 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 12:11:39,502 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-21 12:11:39,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:11:39,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115459118] [2024-09-21 12:11:39,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 12:11:39,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839618525] [2024-09-21 12:11:39,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839618525] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 12:11:39,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 12:11:39,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-21 12:11:39,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424381190] [2024-09-21 12:11:39,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 12:11:39,507 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-21 12:11:39,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:11:39,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-21 12:11:39,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-21 12:11:39,508 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) [2024-09-21 12:11:39,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:11:39,593 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2024-09-21 12:11:39,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-21 12:11:39,594 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 [2024-09-21 12:11:39,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:11:39,595 INFO L225 Difference]: With dead ends: 63 [2024-09-21 12:11:39,595 INFO L226 Difference]: Without dead ends: 50 [2024-09-21 12:11:39,596 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 [2024-09-21 12:11:39,597 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:11:39,597 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 113 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 12:11:39,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-21 12:11:39,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-09-21 12:11:39,608 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) [2024-09-21 12:11:39,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2024-09-21 12:11:39,610 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 26 [2024-09-21 12:11:39,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:11:39,610 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2024-09-21 12:11:39,610 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) [2024-09-21 12:11:39,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:11:39,611 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2024-09-21 12:11:39,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-21 12:11:39,611 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:11:39,611 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] [2024-09-21 12:11:39,631 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-21 12:11:39,812 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 [2024-09-21 12:11:39,813 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:11:39,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:11:39,813 INFO L85 PathProgramCache]: Analyzing trace with hash -975701997, now seen corresponding path program 1 times [2024-09-21 12:11:39,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:11:39,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210844858] [2024-09-21 12:11:39,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:11:39,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:11:39,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 12:11:39,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1316140467] [2024-09-21 12:11:39,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:11:39,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:11:39,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:11:39,846 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) [2024-09-21 12:11:39,849 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-21 12:11:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:39,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-21 12:11:39,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:11:39,974 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-21 12:11:39,975 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-21 12:11:39,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:11:39,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210844858] [2024-09-21 12:11:39,976 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 12:11:39,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316140467] [2024-09-21 12:11:39,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316140467] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 12:11:39,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 12:11:39,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-21 12:11:39,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454229060] [2024-09-21 12:11:39,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 12:11:39,978 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-21 12:11:39,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:11:39,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-21 12:11:39,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-21 12:11:39,982 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) [2024-09-21 12:11:40,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:11:40,064 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2024-09-21 12:11:40,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-21 12:11:40,064 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 [2024-09-21 12:11:40,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:11:40,066 INFO L225 Difference]: With dead ends: 63 [2024-09-21 12:11:40,066 INFO L226 Difference]: Without dead ends: 61 [2024-09-21 12:11:40,066 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 [2024-09-21 12:11:40,067 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:11:40,067 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 95 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 12:11:40,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-21 12:11:40,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2024-09-21 12:11:40,086 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) [2024-09-21 12:11:40,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2024-09-21 12:11:40,089 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 33 [2024-09-21 12:11:40,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:11:40,090 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2024-09-21 12:11:40,090 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) [2024-09-21 12:11:40,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:11:40,091 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2024-09-21 12:11:40,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-21 12:11:40,092 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:11:40,092 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] [2024-09-21 12:11:40,108 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-21 12:11:40,293 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 [2024-09-21 12:11:40,293 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:11:40,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:11:40,294 INFO L85 PathProgramCache]: Analyzing trace with hash -928833564, now seen corresponding path program 1 times [2024-09-21 12:11:40,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:11:40,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791578460] [2024-09-21 12:11:40,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:11:40,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:11:40,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 12:11:40,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [546945769] [2024-09-21 12:11:40,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:11:40,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:11:40,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:11:40,322 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) [2024-09-21 12:11:40,324 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-21 12:11:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:40,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-21 12:11:40,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:11:40,515 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-21 12:11:40,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:11:40,622 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-09-21 12:11:40,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:11:40,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791578460] [2024-09-21 12:11:40,623 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 12:11:40,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546945769] [2024-09-21 12:11:40,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546945769] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-21 12:11:40,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-21 12:11:40,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-21 12:11:40,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497737029] [2024-09-21 12:11:40,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 12:11:40,626 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-21 12:11:40,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:11:40,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-21 12:11:40,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-21 12:11:40,627 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) [2024-09-21 12:11:40,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:11:40,700 INFO L93 Difference]: Finished difference Result 70 states and 87 transitions. [2024-09-21 12:11:40,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-21 12:11:40,700 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 [2024-09-21 12:11:40,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:11:40,702 INFO L225 Difference]: With dead ends: 70 [2024-09-21 12:11:40,703 INFO L226 Difference]: Without dead ends: 68 [2024-09-21 12:11:40,703 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 [2024-09-21 12:11:40,704 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 [2024-09-21 12:11:40,704 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] [2024-09-21 12:11:40,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-21 12:11:40,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2024-09-21 12:11:40,717 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) [2024-09-21 12:11:40,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2024-09-21 12:11:40,718 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 43 [2024-09-21 12:11:40,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:11:40,719 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2024-09-21 12:11:40,719 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) [2024-09-21 12:11:40,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:11:40,720 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2024-09-21 12:11:40,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-21 12:11:40,721 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:11:40,721 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] [2024-09-21 12:11:40,740 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-21 12:11:40,925 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 [2024-09-21 12:11:40,926 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:11:40,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:11:40,926 INFO L85 PathProgramCache]: Analyzing trace with hash -238148106, now seen corresponding path program 1 times [2024-09-21 12:11:40,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:11:40,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447701245] [2024-09-21 12:11:40,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:11:40,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:11:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:41,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:11:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:41,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:11:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:41,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-21 12:11:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:41,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-21 12:11:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:41,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-21 12:11:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:41,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-21 12:11:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:41,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-21 12:11:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:41,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-21 12:11:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:41,090 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-21 12:11:41,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:11:41,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447701245] [2024-09-21 12:11:41,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447701245] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 12:11:41,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 12:11:41,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-21 12:11:41,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725199654] [2024-09-21 12:11:41,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 12:11:41,092 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-21 12:11:41,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:11:41,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-21 12:11:41,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-21 12:11:41,093 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) [2024-09-21 12:11:41,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:11:41,146 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2024-09-21 12:11:41,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-21 12:11:41,147 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 [2024-09-21 12:11:41,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:11:41,148 INFO L225 Difference]: With dead ends: 75 [2024-09-21 12:11:41,150 INFO L226 Difference]: Without dead ends: 63 [2024-09-21 12:11:41,150 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 [2024-09-21 12:11:41,151 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 [2024-09-21 12:11:41,151 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] [2024-09-21 12:11:41,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-21 12:11:41,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-09-21 12:11:41,172 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) [2024-09-21 12:11:41,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2024-09-21 12:11:41,175 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 49 [2024-09-21 12:11:41,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:11:41,175 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2024-09-21 12:11:41,176 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) [2024-09-21 12:11:41,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:11:41,176 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2024-09-21 12:11:41,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-21 12:11:41,177 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:11:41,177 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] [2024-09-21 12:11:41,177 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-21 12:11:41,179 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:11:41,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:11:41,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1374799408, now seen corresponding path program 1 times [2024-09-21 12:11:41,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:11:41,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328986485] [2024-09-21 12:11:41,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:11:41,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:11:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 12:11:41,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [324685012] [2024-09-21 12:11:41,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:11:41,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:11:41,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:11:41,224 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) [2024-09-21 12:11:41,225 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-21 12:11:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:41,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-21 12:11:41,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:11:41,592 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-21 12:11:41,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:11:43,074 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-21 12:11:43,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:11:43,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328986485] [2024-09-21 12:11:43,076 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 12:11:43,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324685012] [2024-09-21 12:11:43,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324685012] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:11:43,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-21 12:11:43,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2024-09-21 12:11:43,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889548433] [2024-09-21 12:11:43,077 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-21 12:11:43,077 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-21 12:11:43,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:11:43,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-21 12:11:43,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-09-21 12:11:43,079 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) [2024-09-21 12:11:43,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:11:43,710 INFO L93 Difference]: Finished difference Result 138 states and 183 transitions. [2024-09-21 12:11:43,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-21 12:11:43,711 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 [2024-09-21 12:11:43,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:11:43,713 INFO L225 Difference]: With dead ends: 138 [2024-09-21 12:11:43,713 INFO L226 Difference]: Without dead ends: 115 [2024-09-21 12:11:43,714 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-09-21 12:11:43,714 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-09-21 12:11:43,714 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 225 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-21 12:11:43,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-21 12:11:43,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2024-09-21 12:11:43,773 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) [2024-09-21 12:11:43,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 146 transitions. [2024-09-21 12:11:43,774 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 146 transitions. Word has length 63 [2024-09-21 12:11:43,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:11:43,775 INFO L474 AbstractCegarLoop]: Abstraction has 113 states and 146 transitions. [2024-09-21 12:11:43,775 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) [2024-09-21 12:11:43,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:11:43,778 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 146 transitions. [2024-09-21 12:11:43,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-21 12:11:43,779 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:11:43,779 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] [2024-09-21 12:11:43,797 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-21 12:11:43,979 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 [2024-09-21 12:11:43,980 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:11:43,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:11:43,981 INFO L85 PathProgramCache]: Analyzing trace with hash -2048390162, now seen corresponding path program 1 times [2024-09-21 12:11:43,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:11:43,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510653108] [2024-09-21 12:11:43,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:11:43,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:11:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 12:11:44,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [25477744] [2024-09-21 12:11:44,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:11:44,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:11:44,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:11:44,018 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) [2024-09-21 12:11:44,020 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-21 12:11:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:44,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-21 12:11:44,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:11:44,312 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-21 12:11:44,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:11:44,817 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-21 12:11:44,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:11:44,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510653108] [2024-09-21 12:11:44,817 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 12:11:44,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25477744] [2024-09-21 12:11:44,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25477744] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:11:44,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-21 12:11:44,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-09-21 12:11:44,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788533675] [2024-09-21 12:11:44,818 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-21 12:11:44,819 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-21 12:11:44,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:11:44,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-21 12:11:44,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-09-21 12:11:44,821 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) [2024-09-21 12:11:45,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:11:45,511 INFO L93 Difference]: Finished difference Result 168 states and 221 transitions. [2024-09-21 12:11:45,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-21 12:11:45,512 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 [2024-09-21 12:11:45,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:11:45,514 INFO L225 Difference]: With dead ends: 168 [2024-09-21 12:11:45,514 INFO L226 Difference]: Without dead ends: 136 [2024-09-21 12:11:45,515 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-09-21 12:11:45,516 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 15 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2024-09-21 12:11:45,516 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 195 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-21 12:11:45,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-21 12:11:45,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 110. [2024-09-21 12:11:45,548 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) [2024-09-21 12:11:45,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 136 transitions. [2024-09-21 12:11:45,550 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 136 transitions. Word has length 74 [2024-09-21 12:11:45,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:11:45,550 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 136 transitions. [2024-09-21 12:11:45,551 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) [2024-09-21 12:11:45,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:11:45,551 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 136 transitions. [2024-09-21 12:11:45,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-21 12:11:45,552 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:11:45,552 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] [2024-09-21 12:11:45,569 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-21 12:11:45,756 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 [2024-09-21 12:11:45,757 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:11:45,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:11:45,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1556827571, now seen corresponding path program 1 times [2024-09-21 12:11:45,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:11:45,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814996289] [2024-09-21 12:11:45,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:11:45,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:11:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:46,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:11:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:46,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:11:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:46,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-21 12:11:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:46,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-21 12:11:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:46,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-21 12:11:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:46,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-21 12:11:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:46,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-21 12:11:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:46,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-21 12:11:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:46,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-21 12:11:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:46,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-21 12:11:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:46,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-21 12:11:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:46,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-21 12:11:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:46,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-21 12:11:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:46,129 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-21 12:11:46,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:11:46,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814996289] [2024-09-21 12:11:46,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814996289] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:11:46,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913906338] [2024-09-21 12:11:46,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:11:46,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:11:46,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:11:46,132 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) [2024-09-21 12:11:46,133 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-21 12:11:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:11:46,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-21 12:11:46,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:11:46,334 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-21 12:11:46,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:11:46,699 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-21 12:11:46,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913906338] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:11:46,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:11:46,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-09-21 12:11:46,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165231073] [2024-09-21 12:11:46,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:11:46,701 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-21 12:11:46,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:11:46,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-21 12:11:46,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-09-21 12:11:46,702 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) [2024-09-21 12:11:46,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:11:46,892 INFO L93 Difference]: Finished difference Result 129 states and 155 transitions. [2024-09-21 12:11:46,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-21 12:11:46,892 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 [2024-09-21 12:11:46,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:11:46,894 INFO L225 Difference]: With dead ends: 129 [2024-09-21 12:11:46,894 INFO L226 Difference]: Without dead ends: 100 [2024-09-21 12:11:46,894 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 [2024-09-21 12:11:46,895 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 [2024-09-21 12:11:46,895 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] [2024-09-21 12:11:46,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-09-21 12:11:46,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-09-21 12:11:46,921 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) [2024-09-21 12:11:46,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2024-09-21 12:11:46,923 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 79 [2024-09-21 12:11:46,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:11:46,923 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2024-09-21 12:11:46,923 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) [2024-09-21 12:11:46,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:11:46,924 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2024-09-21 12:11:46,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-21 12:11:46,925 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:11:46,925 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] [2024-09-21 12:11:46,941 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-21 12:11:47,125 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 [2024-09-21 12:11:47,126 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:11:47,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:11:47,126 INFO L85 PathProgramCache]: Analyzing trace with hash -802122381, now seen corresponding path program 2 times [2024-09-21 12:11:47,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:11:47,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895508601] [2024-09-21 12:11:47,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:11:47,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:11:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 12:11:47,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1834980763] [2024-09-21 12:11:47,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 12:11:47,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:11:47,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:11:47,163 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) [2024-09-21 12:11:47,164 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-21 12:11:47,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 12:11:47,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:11:47,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-21 12:11:47,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:11:47,604 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 46 proven. 40 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-21 12:11:47,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:12:04,335 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 46 proven. 40 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-21 12:12:04,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:12:04,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895508601] [2024-09-21 12:12:04,336 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 12:12:04,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834980763] [2024-09-21 12:12:04,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834980763] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:12:04,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-21 12:12:04,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22 [2024-09-21 12:12:04,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047094918] [2024-09-21 12:12:04,337 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-21 12:12:04,337 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-21 12:12:04,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:12:04,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-21 12:12:04,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2024-09-21 12:12:04,338 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) [2024-09-21 12:12:17,169 WARN L293 SmtUtils]: Spent 12.37s 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) [2024-09-21 12:12:18,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-21 12:12:20,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-21 12:12:37,400 WARN L293 SmtUtils]: Spent 11.38s 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) [2024-09-21 12:12:38,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:12:38,468 INFO L93 Difference]: Finished difference Result 203 states and 265 transitions. [2024-09-21 12:12:38,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-21 12:12:38,469 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 [2024-09-21 12:12:38,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:12:38,470 INFO L225 Difference]: With dead ends: 203 [2024-09-21 12:12:38,470 INFO L226 Difference]: Without dead ends: 170 [2024-09-21 12:12:38,471 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2024-09-21 12:12:38,472 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 66 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s 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, 7.5s IncrementalHoareTripleChecker+Time [2024-09-21 12:12:38,472 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 513 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2024-09-21 12:12:38,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-09-21 12:12:38,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 166. [2024-09-21 12:12:38,531 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) [2024-09-21 12:12:38,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 216 transitions. [2024-09-21 12:12:38,533 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 216 transitions. Word has length 93 [2024-09-21 12:12:38,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:12:38,533 INFO L474 AbstractCegarLoop]: Abstraction has 166 states and 216 transitions. [2024-09-21 12:12:38,533 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) [2024-09-21 12:12:38,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:12:38,534 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 216 transitions. [2024-09-21 12:12:38,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-21 12:12:38,535 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:12:38,535 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] [2024-09-21 12:12:38,553 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-21 12:12:38,739 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 [2024-09-21 12:12:38,740 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:12:38,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:12:38,740 INFO L85 PathProgramCache]: Analyzing trace with hash 644553835, now seen corresponding path program 2 times [2024-09-21 12:12:38,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:12:38,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427697764] [2024-09-21 12:12:38,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:12:38,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:12:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 12:12:38,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [702210955] [2024-09-21 12:12:38,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 12:12:38,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:12:38,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:12:38,785 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) [2024-09-21 12:12:38,786 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-21 12:12:38,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 12:12:38,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:12:38,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-21 12:12:38,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:12:39,269 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 50 proven. 50 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-09-21 12:12:39,269 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:12:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 50 proven. 50 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-09-21 12:12:42,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:12:42,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427697764] [2024-09-21 12:12:42,496 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 12:12:42,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702210955] [2024-09-21 12:12:42,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702210955] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:12:42,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-21 12:12:42,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2024-09-21 12:12:42,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745333843] [2024-09-21 12:12:42,496 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-21 12:12:42,497 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-21 12:12:42,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:12:42,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-21 12:12:42,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2024-09-21 12:12:42,498 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) [2024-09-21 12:12:46,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-21 12:12:47,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:12:47,167 INFO L93 Difference]: Finished difference Result 246 states and 327 transitions. [2024-09-21 12:12:47,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-21 12:12:47,168 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 [2024-09-21 12:12:47,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:12:47,170 INFO L225 Difference]: With dead ends: 246 [2024-09-21 12:12:47,170 INFO L226 Difference]: Without dead ends: 185 [2024-09-21 12:12:47,173 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=270, Invalid=852, Unknown=0, NotChecked=0, Total=1122 [2024-09-21 12:12:47,174 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 34 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s 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, 3.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:12:47,174 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 422 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-09-21 12:12:47,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-09-21 12:12:47,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 161. [2024-09-21 12:12:47,250 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) [2024-09-21 12:12:47,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 204 transitions. [2024-09-21 12:12:47,251 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 204 transitions. Word has length 104 [2024-09-21 12:12:47,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:12:47,252 INFO L474 AbstractCegarLoop]: Abstraction has 161 states and 204 transitions. [2024-09-21 12:12:47,252 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) [2024-09-21 12:12:47,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:12:47,252 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 204 transitions. [2024-09-21 12:12:47,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-21 12:12:47,254 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:12:47,254 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] [2024-09-21 12:12:47,270 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-21 12:12:47,458 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 [2024-09-21 12:12:47,459 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:12:47,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:12:47,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1191181482, now seen corresponding path program 2 times [2024-09-21 12:12:47,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:12:47,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690678388] [2024-09-21 12:12:47,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:12:47,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:12:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:47,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:12:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:47,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:12:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:47,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-21 12:12:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:47,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-21 12:12:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:47,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-21 12:12:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:47,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-21 12:12:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:47,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-21 12:12:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:47,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-21 12:12:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:47,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-21 12:12:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:47,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-21 12:12:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:47,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-21 12:12:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:47,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-21 12:12:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:47,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-21 12:12:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:47,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-21 12:12:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:47,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-21 12:12:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:47,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-21 12:12:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:47,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-21 12:12:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:47,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-21 12:12:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:47,900 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-21 12:12:47,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:12:47,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690678388] [2024-09-21 12:12:47,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690678388] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:12:47,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529241860] [2024-09-21 12:12:47,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 12:12:47,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:12:47,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:12:47,903 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) [2024-09-21 12:12:47,904 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-21 12:12:47,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 12:12:47,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:12:47,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-21 12:12:47,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:12:48,257 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-09-21 12:12:48,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:12:49,477 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-09-21 12:12:49,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529241860] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:12:49,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:12:49,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 12] total 25 [2024-09-21 12:12:49,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244912693] [2024-09-21 12:12:49,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:12:49,478 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-21 12:12:49,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:12:49,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-21 12:12:49,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2024-09-21 12:12:49,479 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) [2024-09-21 12:12:49,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:12:49,862 INFO L93 Difference]: Finished difference Result 187 states and 231 transitions. [2024-09-21 12:12:49,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-21 12:12:49,863 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 [2024-09-21 12:12:49,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:12:49,864 INFO L225 Difference]: With dead ends: 187 [2024-09-21 12:12:49,865 INFO L226 Difference]: Without dead ends: 145 [2024-09-21 12:12:49,865 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 [2024-09-21 12:12:49,866 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 [2024-09-21 12:12:49,867 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] [2024-09-21 12:12:49,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-09-21 12:12:49,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2024-09-21 12:12:49,930 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) [2024-09-21 12:12:49,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 170 transitions. [2024-09-21 12:12:49,931 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 170 transitions. Word has length 109 [2024-09-21 12:12:49,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:12:49,931 INFO L474 AbstractCegarLoop]: Abstraction has 139 states and 170 transitions. [2024-09-21 12:12:49,931 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) [2024-09-21 12:12:49,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:12:49,932 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 170 transitions. [2024-09-21 12:12:49,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-09-21 12:12:49,933 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:12:49,933 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] [2024-09-21 12:12:49,945 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-21 12:12:50,133 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 [2024-09-21 12:12:50,133 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:12:50,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:12:50,134 INFO L85 PathProgramCache]: Analyzing trace with hash -626389098, now seen corresponding path program 1 times [2024-09-21 12:12:50,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:12:50,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418118765] [2024-09-21 12:12:50,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:12:50,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:12:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:50,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:12:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:50,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:12:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:50,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-21 12:12:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:50,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-21 12:12:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:50,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-21 12:12:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:50,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-21 12:12:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:50,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-21 12:12:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:50,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-21 12:12:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:50,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-21 12:12:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:50,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-21 12:12:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:50,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-21 12:12:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:50,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-21 12:12:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:50,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-21 12:12:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:50,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-21 12:12:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:50,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-21 12:12:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:50,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-21 12:12:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:50,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-21 12:12:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:50,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-21 12:12:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:50,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-21 12:12:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:50,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-21 12:12:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:50,377 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 51 proven. 28 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-21 12:12:50,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:12:50,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418118765] [2024-09-21 12:12:50,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418118765] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:12:50,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192388526] [2024-09-21 12:12:50,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:12:50,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:12:50,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:12:50,380 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) [2024-09-21 12:12:50,384 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-21 12:12:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:50,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-21 12:12:50,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:12:50,514 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 66 proven. 13 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-21 12:12:50,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:12:50,671 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 66 proven. 13 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-21 12:12:50,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192388526] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:12:50,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:12:50,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 9 [2024-09-21 12:12:50,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215615724] [2024-09-21 12:12:50,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:12:50,673 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-21 12:12:50,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:12:50,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-21 12:12:50,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-09-21 12:12:50,674 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) [2024-09-21 12:12:50,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:12:50,849 INFO L93 Difference]: Finished difference Result 155 states and 191 transitions. [2024-09-21 12:12:50,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-21 12:12:50,850 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 [2024-09-21 12:12:50,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:12:50,851 INFO L225 Difference]: With dead ends: 155 [2024-09-21 12:12:50,851 INFO L226 Difference]: Without dead ends: 148 [2024-09-21 12:12:50,852 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 276 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-09-21 12:12:50,852 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 5 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-09-21 12:12:50,853 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] [2024-09-21 12:12:50,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-09-21 12:12:50,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2024-09-21 12:12:50,931 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) [2024-09-21 12:12:50,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 182 transitions. [2024-09-21 12:12:50,932 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 182 transitions. Word has length 121 [2024-09-21 12:12:50,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:12:50,933 INFO L474 AbstractCegarLoop]: Abstraction has 147 states and 182 transitions. [2024-09-21 12:12:50,933 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) [2024-09-21 12:12:50,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:12:50,934 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 182 transitions. [2024-09-21 12:12:50,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-09-21 12:12:50,935 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:12:50,935 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] [2024-09-21 12:12:50,952 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-21 12:12:51,139 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 [2024-09-21 12:12:51,139 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:12:51,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:12:51,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1967500462, now seen corresponding path program 1 times [2024-09-21 12:12:51,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:12:51,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539343485] [2024-09-21 12:12:51,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:12:51,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:12:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:51,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:12:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:51,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:12:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:51,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-21 12:12:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:51,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-21 12:12:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:51,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-21 12:12:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:51,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-21 12:12:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:51,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-21 12:12:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:51,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-21 12:12:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:51,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-21 12:12:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:51,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-21 12:12:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:51,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-21 12:12:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:51,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-21 12:12:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:51,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-21 12:12:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:51,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-21 12:12:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:51,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-21 12:12:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:51,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-21 12:12:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:51,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-21 12:12:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:51,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-21 12:12:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:51,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-21 12:12:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:51,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-21 12:12:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:51,368 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 63 proven. 15 refuted. 0 times theorem prover too weak. 621 trivial. 0 not checked. [2024-09-21 12:12:51,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:12:51,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539343485] [2024-09-21 12:12:51,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539343485] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:12:51,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226179651] [2024-09-21 12:12:51,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:12:51,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:12:51,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:12:51,370 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) [2024-09-21 12:12:51,372 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-21 12:12:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:12:51,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-21 12:12:51,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:12:51,558 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2024-09-21 12:12:51,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-21 12:12:51,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226179651] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 12:12:51,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-21 12:12:51,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2024-09-21 12:12:51,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995739589] [2024-09-21 12:12:51,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 12:12:51,560 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-21 12:12:51,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:12:51,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-21 12:12:51,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-09-21 12:12:51,561 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) [2024-09-21 12:12:51,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:12:51,760 INFO L93 Difference]: Finished difference Result 190 states and 238 transitions. [2024-09-21 12:12:51,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-21 12:12:51,761 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 [2024-09-21 12:12:51,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:12:51,763 INFO L225 Difference]: With dead ends: 190 [2024-09-21 12:12:51,763 INFO L226 Difference]: Without dead ends: 147 [2024-09-21 12:12:51,764 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-09-21 12:12:51,765 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 14 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-09-21 12:12:51,766 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] [2024-09-21 12:12:51,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-09-21 12:12:51,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 130. [2024-09-21 12:12:51,842 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) [2024-09-21 12:12:51,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 154 transitions. [2024-09-21 12:12:51,843 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 154 transitions. Word has length 123 [2024-09-21 12:12:51,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:12:51,843 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 154 transitions. [2024-09-21 12:12:51,843 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) [2024-09-21 12:12:51,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:12:51,844 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 154 transitions. [2024-09-21 12:12:51,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-09-21 12:12:51,846 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:12:51,846 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] [2024-09-21 12:12:51,863 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-21 12:12:52,047 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 [2024-09-21 12:12:52,047 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:12:52,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:12:52,047 INFO L85 PathProgramCache]: Analyzing trace with hash -478157618, now seen corresponding path program 3 times [2024-09-21 12:12:52,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:12:52,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011458303] [2024-09-21 12:12:52,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:12:52,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:12:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 12:12:52,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [553878344] [2024-09-21 12:12:52,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 12:12:52,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:12:52,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:12:52,111 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) [2024-09-21 12:12:52,113 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-21 12:12:52,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-21 12:12:52,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:12:52,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-21 12:12:52,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:12:52,313 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 163 proven. 53 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2024-09-21 12:12:52,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:12:52,462 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-09-21 12:12:52,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:12:52,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011458303] [2024-09-21 12:12:52,462 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 12:12:52,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553878344] [2024-09-21 12:12:52,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553878344] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:12:52,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-21 12:12:52,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2024-09-21 12:12:52,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351833238] [2024-09-21 12:12:52,463 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-21 12:12:52,463 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-21 12:12:52,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:12:52,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-21 12:12:52,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-09-21 12:12:52,464 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) [2024-09-21 12:12:52,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:12:52,698 INFO L93 Difference]: Finished difference Result 130 states and 154 transitions. [2024-09-21 12:12:52,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-21 12:12:52,698 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 [2024-09-21 12:12:52,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:12:52,699 INFO L225 Difference]: With dead ends: 130 [2024-09-21 12:12:52,699 INFO L226 Difference]: Without dead ends: 0 [2024-09-21 12:12:52,701 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 [2024-09-21 12:12:52,703 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 [2024-09-21 12:12:52,703 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] [2024-09-21 12:12:52,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-21 12:12:52,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-21 12:12:52,704 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) [2024-09-21 12:12:52,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-21 12:12:52,704 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 134 [2024-09-21 12:12:52,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:12:52,704 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-21 12:12:52,704 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) [2024-09-21 12:12:52,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:12:52,705 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-21 12:12:52,705 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-21 12:12:52,709 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-21 12:12:52,726 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-21 12:12:52,913 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 [2024-09-21 12:12:52,917 INFO L408 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:12:52,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-21 12:12:55,299 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-21 12:12:55,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:12:55 BoogieIcfgContainer [2024-09-21 12:12:55,313 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-21 12:12:55,314 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-21 12:12:55,314 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-21 12:12:55,314 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-21 12:12:55,315 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:11:38" (3/4) ... [2024-09-21 12:12:55,317 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-21 12:12:55,366 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-21 12:12:55,366 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-21 12:12:55,367 INFO L158 Benchmark]: Toolchain (without parser) took 77841.62ms. Allocated memory was 167.8MB in the beginning and 358.6MB in the end (delta: 190.8MB). Free memory was 96.7MB in the beginning and 292.9MB in the end (delta: -196.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 12:12:55,367 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 167.8MB. Free memory is still 121.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 12:12:55,367 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.35ms. Allocated memory is still 167.8MB. Free memory was 96.6MB in the beginning and 84.9MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-21 12:12:55,367 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.13ms. Allocated memory is still 167.8MB. Free memory was 84.9MB in the beginning and 83.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 12:12:55,368 INFO L158 Benchmark]: Boogie Preprocessor took 46.70ms. Allocated memory is still 167.8MB. Free memory was 83.9MB in the beginning and 82.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 12:12:55,368 INFO L158 Benchmark]: RCFGBuilder took 409.63ms. Allocated memory is still 167.8MB. Free memory was 82.0MB in the beginning and 125.7MB in the end (delta: -43.6MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2024-09-21 12:12:55,368 INFO L158 Benchmark]: TraceAbstraction took 77031.39ms. Allocated memory was 167.8MB in the beginning and 358.6MB in the end (delta: 190.8MB). Free memory was 124.9MB in the beginning and 296.0MB in the end (delta: -171.1MB). Peak memory consumption was 204.9MB. Max. memory is 16.1GB. [2024-09-21 12:12:55,368 INFO L158 Benchmark]: Witness Printer took 52.27ms. Allocated memory is still 358.6MB. Free memory was 295.0MB in the beginning and 292.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 12:12:55,370 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 167.8MB. Free memory is still 121.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 272.35ms. Allocated memory is still 167.8MB. Free memory was 96.6MB in the beginning and 84.9MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.13ms. Allocated memory is still 167.8MB. Free memory was 84.9MB in the beginning and 83.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 46.70ms. Allocated memory is still 167.8MB. Free memory was 83.9MB in the beginning and 82.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 409.63ms. Allocated memory is still 167.8MB. Free memory was 82.0MB in the beginning and 125.7MB in the end (delta: -43.6MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * TraceAbstraction took 77031.39ms. Allocated memory was 167.8MB in the beginning and 358.6MB in the end (delta: 190.8MB). Free memory was 124.9MB in the beginning and 296.0MB in the end (delta: -171.1MB). Peak memory consumption was 204.9MB. Max. memory is 16.1GB. * Witness Printer took 52.27ms. Allocated memory is still 358.6MB. Free memory was 295.0MB in the beginning and 292.9MB 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: 74.6s, OverallIterations: 16, TraceHistogramMax: 21, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 41.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 319 SdHoareTripleChecker+Valid, 12.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 264 mSDsluCounter, 3086 SdHoareTripleChecker+Invalid, 11.9s 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, 35.1s 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: 0.6s AutomataMinimizationTime, 16 MinimizatonAttempts, 96 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 28.1s 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: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-09-21 12:12:55,436 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