./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound50.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 fc71ae13b1bed24e074eb2de07c8f2064aa903343708c3aabf1b928078c9e7f6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 07:04:14,677 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 07:04:14,767 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 07:04:14,776 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 07:04:14,776 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 07:04:14,808 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 07:04:14,809 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 07:04:14,809 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 07:04:14,810 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 07:04:14,811 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 07:04:14,811 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 07:04:14,812 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 07:04:14,812 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 07:04:14,814 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 07:04:14,815 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 07:04:14,815 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 07:04:14,815 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 07:04:14,816 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 07:04:14,816 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 07:04:14,816 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 07:04:14,817 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 07:04:14,820 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 07:04:14,821 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 07:04:14,821 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 07:04:14,821 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 07:04:14,821 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 07:04:14,821 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 07:04:14,822 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 07:04:14,822 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 07:04:14,822 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 07:04:14,829 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 07:04:14,829 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 07:04:14,829 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 07:04:14,829 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 07:04:14,830 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 07:04:14,830 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 07:04:14,830 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 07:04:14,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 07:04:14,830 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 07:04:14,830 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 07:04:14,830 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 07:04:14,831 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 07:04:14,832 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/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc71ae13b1bed24e074eb2de07c8f2064aa903343708c3aabf1b928078c9e7f6 [2024-11-16 07:04:15,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 07:04:15,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 07:04:15,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 07:04:15,123 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 07:04:15,123 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 07:04:15,124 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound50.c [2024-11-16 07:04:16,586 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 07:04:16,774 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 07:04:16,775 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound50.c [2024-11-16 07:04:16,785 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7117c49e0/dcea0a8c58854ddf8ff675b46eed2ab8/FLAG021c17f53 [2024-11-16 07:04:16,802 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7117c49e0/dcea0a8c58854ddf8ff675b46eed2ab8 [2024-11-16 07:04:16,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 07:04:16,807 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 07:04:16,808 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 07:04:16,808 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 07:04:16,815 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 07:04:16,816 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:04:16" (1/1) ... [2024-11-16 07:04:16,817 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c4f72c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:16, skipping insertion in model container [2024-11-16 07:04:16,817 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:04:16" (1/1) ... [2024-11-16 07:04:16,837 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 07:04:17,021 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound50.c[490,503] [2024-11-16 07:04:17,043 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 07:04:17,051 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 07:04:17,062 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound50.c[490,503] [2024-11-16 07:04:17,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 07:04:17,087 INFO L204 MainTranslator]: Completed translation [2024-11-16 07:04:17,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:17 WrapperNode [2024-11-16 07:04:17,088 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 07:04:17,089 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 07:04:17,089 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 07:04:17,089 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 07:04:17,096 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:17" (1/1) ... [2024-11-16 07:04:17,104 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:17" (1/1) ... [2024-11-16 07:04:17,122 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 77 [2024-11-16 07:04:17,124 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 07:04:17,124 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 07:04:17,124 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 07:04:17,125 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 07:04:17,134 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:17" (1/1) ... [2024-11-16 07:04:17,135 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:17" (1/1) ... [2024-11-16 07:04:17,136 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:17" (1/1) ... [2024-11-16 07:04:17,147 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 07:04:17,147 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:17" (1/1) ... [2024-11-16 07:04:17,148 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:17" (1/1) ... [2024-11-16 07:04:17,151 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:17" (1/1) ... [2024-11-16 07:04:17,151 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:17" (1/1) ... [2024-11-16 07:04:17,152 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:17" (1/1) ... [2024-11-16 07:04:17,153 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:17" (1/1) ... [2024-11-16 07:04:17,155 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 07:04:17,158 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 07:04:17,158 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 07:04:17,158 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 07:04:17,159 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:17" (1/1) ... [2024-11-16 07:04:17,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 07:04:17,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:04:17,192 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 07:04:17,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 07:04:17,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 07:04:17,232 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-16 07:04:17,232 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-16 07:04:17,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 07:04:17,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 07:04:17,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 07:04:17,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-16 07:04:17,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-16 07:04:17,291 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 07:04:17,293 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 07:04:17,477 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-16 07:04:17,477 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 07:04:17,495 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 07:04:17,496 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 07:04:17,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:04:17 BoogieIcfgContainer [2024-11-16 07:04:17,496 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 07:04:17,501 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 07:04:17,501 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 07:04:17,505 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 07:04:17,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:04:16" (1/3) ... [2024-11-16 07:04:17,506 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a900f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:04:17, skipping insertion in model container [2024-11-16 07:04:17,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:17" (2/3) ... [2024-11-16 07:04:17,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a900f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:04:17, skipping insertion in model container [2024-11-16 07:04:17,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:04:17" (3/3) ... [2024-11-16 07:04:17,509 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound50.c [2024-11-16 07:04:17,526 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 07:04:17,527 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 07:04:17,581 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 07:04:17,587 INFO L333 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=LoopHeads, 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;@57f7dc05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 07:04:17,588 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 07:04:17,592 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 24 states have internal predecessors, (31), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-16 07:04:17,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-16 07:04:17,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:04:17,600 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:04:17,601 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:04:17,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:04:17,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1415255888, now seen corresponding path program 1 times [2024-11-16 07:04:17,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:04:17,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148308874] [2024-11-16 07:04:17,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:17,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:04:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:17,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:04:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:17,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 07:04:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:17,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 07:04:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:17,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 07:04:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:17,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-16 07:04:17,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:17,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 07:04:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:17,803 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-16 07:04:17,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:04:17,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148308874] [2024-11-16 07:04:17,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148308874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 07:04:17,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 07:04:17,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 07:04:17,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206571412] [2024-11-16 07:04:17,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 07:04:17,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 07:04:17,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:04:17,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 07:04:17,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 07:04:17,840 INFO L87 Difference]: Start difference. First operand has 38 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 24 states have internal predecessors, (31), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 07:04:17,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:04:17,864 INFO L93 Difference]: Finished difference Result 73 states and 118 transitions. [2024-11-16 07:04:17,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 07:04:17,868 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 40 [2024-11-16 07:04:17,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:04:17,877 INFO L225 Difference]: With dead ends: 73 [2024-11-16 07:04:17,878 INFO L226 Difference]: Without dead ends: 34 [2024-11-16 07:04:17,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 07:04:17,886 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 07:04:17,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 07:04:17,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-16 07:04:17,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-16 07:04:17,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-16 07:04:17,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2024-11-16 07:04:17,920 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 40 [2024-11-16 07:04:17,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:04:17,921 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2024-11-16 07:04:17,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 07:04:17,921 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2024-11-16 07:04:17,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-16 07:04:17,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:04:17,923 INFO L215 NwaCegarLoop]: trace histogram [6, 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] [2024-11-16 07:04:17,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 07:04:17,924 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:04:17,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:04:17,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1274504883, now seen corresponding path program 1 times [2024-11-16 07:04:17,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:04:17,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241719699] [2024-11-16 07:04:17,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:17,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:04:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:18,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:04:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:18,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 07:04:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:18,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 07:04:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:18,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 07:04:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:18,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-16 07:04:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:18,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 07:04:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:18,363 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-16 07:04:18,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:04:18,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241719699] [2024-11-16 07:04:18,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241719699] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:04:18,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671614511] [2024-11-16 07:04:18,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:18,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:04:18,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:04:18,372 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 07:04:18,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 07:04:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:18,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-16 07:04:18,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:04:18,787 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-16 07:04:18,788 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:04:18,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671614511] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:04:18,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-16 07:04:18,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 11 [2024-11-16 07:04:18,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867967901] [2024-11-16 07:04:18,989 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-16 07:04:18,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 07:04:18,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:04:18,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 07:04:18,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-16 07:04:18,996 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-16 07:04:19,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:04:19,260 INFO L93 Difference]: Finished difference Result 58 states and 75 transitions. [2024-11-16 07:04:19,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 07:04:19,261 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 42 [2024-11-16 07:04:19,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:04:19,262 INFO L225 Difference]: With dead ends: 58 [2024-11-16 07:04:19,263 INFO L226 Difference]: Without dead ends: 49 [2024-11-16 07:04:19,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-16 07:04:19,265 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 38 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 07:04:19,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 218 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 07:04:19,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-16 07:04:19,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2024-11-16 07:04:19,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 29 states have internal predecessors, (32), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-16 07:04:19,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 63 transitions. [2024-11-16 07:04:19,279 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 63 transitions. Word has length 42 [2024-11-16 07:04:19,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:04:19,280 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 63 transitions. [2024-11-16 07:04:19,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-16 07:04:19,280 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 63 transitions. [2024-11-16 07:04:19,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-16 07:04:19,282 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:04:19,282 INFO L215 NwaCegarLoop]: trace histogram [6, 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] [2024-11-16 07:04:19,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 07:04:19,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:04:19,487 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:04:19,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:04:19,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1060669222, now seen corresponding path program 1 times [2024-11-16 07:04:19,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:04:19,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742459623] [2024-11-16 07:04:19,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:19,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:04:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 07:04:19,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1259132058] [2024-11-16 07:04:19,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:19,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:04:19,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:04:19,517 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 07:04:19,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 07:04:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:19,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 07:04:19,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:04:19,640 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-16 07:04:19,641 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 07:04:19,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:04:19,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742459623] [2024-11-16 07:04:19,642 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 07:04:19,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259132058] [2024-11-16 07:04:19,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259132058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 07:04:19,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 07:04:19,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 07:04:19,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723051150] [2024-11-16 07:04:19,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 07:04:19,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 07:04:19,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:04:19,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 07:04:19,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 07:04:19,647 INFO L87 Difference]: Start difference. First operand 48 states and 63 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-16 07:04:19,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:04:19,708 INFO L93 Difference]: Finished difference Result 70 states and 94 transitions. [2024-11-16 07:04:19,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 07:04:19,709 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 44 [2024-11-16 07:04:19,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:04:19,710 INFO L225 Difference]: With dead ends: 70 [2024-11-16 07:04:19,710 INFO L226 Difference]: Without dead ends: 67 [2024-11-16 07:04:19,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 07:04:19,712 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 4 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 07:04:19,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 148 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 07:04:19,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-16 07:04:19,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2024-11-16 07:04:19,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 38 states have internal predecessors, (39), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-16 07:04:19,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 74 transitions. [2024-11-16 07:04:19,727 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 74 transitions. Word has length 44 [2024-11-16 07:04:19,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:04:19,730 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 74 transitions. [2024-11-16 07:04:19,730 INFO L472 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-16 07:04:19,730 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 74 transitions. [2024-11-16 07:04:19,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 07:04:19,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:04:19,732 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:04:19,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 07:04:19,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-16 07:04:19,934 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:04:19,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:04:19,934 INFO L85 PathProgramCache]: Analyzing trace with hash 952841133, now seen corresponding path program 1 times [2024-11-16 07:04:19,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:04:19,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93943370] [2024-11-16 07:04:19,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:19,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:04:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 07:04:19,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2060515660] [2024-11-16 07:04:19,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:19,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:04:19,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:04:19,979 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 07:04:19,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 07:04:20,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:20,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-16 07:04:20,034 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:04:20,139 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-16 07:04:20,139 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 07:04:20,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:04:20,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93943370] [2024-11-16 07:04:20,141 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 07:04:20,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060515660] [2024-11-16 07:04:20,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060515660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 07:04:20,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 07:04:20,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 07:04:20,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470958507] [2024-11-16 07:04:20,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 07:04:20,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 07:04:20,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:04:20,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 07:04:20,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 07:04:20,143 INFO L87 Difference]: Start difference. First operand 58 states and 74 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 07:04:20,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:04:20,198 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2024-11-16 07:04:20,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 07:04:20,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 49 [2024-11-16 07:04:20,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:04:20,201 INFO L225 Difference]: With dead ends: 66 [2024-11-16 07:04:20,203 INFO L226 Difference]: Without dead ends: 63 [2024-11-16 07:04:20,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 07:04:20,204 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 5 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 07:04:20,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 158 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 07:04:20,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-16 07:04:20,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2024-11-16 07:04:20,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 38 states have (on average 1.105263157894737) internal successors, (42), 41 states have internal predecessors, (42), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-16 07:04:20,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2024-11-16 07:04:20,221 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 49 [2024-11-16 07:04:20,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:04:20,222 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2024-11-16 07:04:20,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 07:04:20,222 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2024-11-16 07:04:20,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-16 07:04:20,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:04:20,223 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:04:20,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 07:04:20,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:04:20,428 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:04:20,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:04:20,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1901382541, now seen corresponding path program 1 times [2024-11-16 07:04:20,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:04:20,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937566183] [2024-11-16 07:04:20,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:20,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:04:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 07:04:20,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [42034737] [2024-11-16 07:04:20,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:20,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:04:20,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:04:20,457 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 07:04:20,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 07:04:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:20,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-16 07:04:20,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:04:20,756 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 07:04:20,757 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 07:04:20,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:04:20,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937566183] [2024-11-16 07:04:20,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 07:04:20,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42034737] [2024-11-16 07:04:20,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42034737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 07:04:20,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 07:04:20,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 07:04:20,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219245038] [2024-11-16 07:04:20,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 07:04:20,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 07:04:20,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:04:20,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 07:04:20,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 07:04:20,762 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-16 07:04:20,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:04:20,833 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2024-11-16 07:04:20,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 07:04:20,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 59 [2024-11-16 07:04:20,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:04:20,835 INFO L225 Difference]: With dead ends: 70 [2024-11-16 07:04:20,835 INFO L226 Difference]: Without dead ends: 67 [2024-11-16 07:04:20,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 07:04:20,836 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 5 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 07:04:20,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 145 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 07:04:20,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-16 07:04:20,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2024-11-16 07:04:20,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 44 states have internal predecessors, (45), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-16 07:04:20,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2024-11-16 07:04:20,858 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 59 [2024-11-16 07:04:20,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:04:20,858 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2024-11-16 07:04:20,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-16 07:04:20,859 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2024-11-16 07:04:20,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-16 07:04:20,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:04:20,862 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:04:20,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 07:04:21,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:04:21,063 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:04:21,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:04:21,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1573647644, now seen corresponding path program 1 times [2024-11-16 07:04:21,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:04:21,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308051139] [2024-11-16 07:04:21,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:21,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:04:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 07:04:21,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1226683635] [2024-11-16 07:04:21,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:21,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:04:21,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:04:21,086 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 07:04:21,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 07:04:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:21,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-16 07:04:21,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:04:21,355 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-16 07:04:21,355 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:04:21,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:04:21,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308051139] [2024-11-16 07:04:21,445 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 07:04:21,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226683635] [2024-11-16 07:04:21,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226683635] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:04:21,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-16 07:04:21,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-16 07:04:21,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94460901] [2024-11-16 07:04:21,446 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-16 07:04:21,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 07:04:21,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:04:21,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 07:04:21,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-16 07:04:21,447 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-16 07:04:21,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:04:21,662 INFO L93 Difference]: Finished difference Result 100 states and 131 transitions. [2024-11-16 07:04:21,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 07:04:21,663 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 67 [2024-11-16 07:04:21,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:04:21,666 INFO L225 Difference]: With dead ends: 100 [2024-11-16 07:04:21,667 INFO L226 Difference]: Without dead ends: 97 [2024-11-16 07:04:21,668 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-16 07:04:21,669 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 21 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 07:04:21,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 236 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 07:04:21,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-16 07:04:21,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 84. [2024-11-16 07:04:21,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 50 states have (on average 1.12) internal successors, (56), 53 states have internal predecessors, (56), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-16 07:04:21,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2024-11-16 07:04:21,693 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 67 [2024-11-16 07:04:21,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:04:21,695 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2024-11-16 07:04:21,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-16 07:04:21,695 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2024-11-16 07:04:21,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 07:04:21,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:04:21,696 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:04:21,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 07:04:21,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:04:21,897 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:04:21,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:04:21,898 INFO L85 PathProgramCache]: Analyzing trace with hash -611527986, now seen corresponding path program 1 times [2024-11-16 07:04:21,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:04:21,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175039003] [2024-11-16 07:04:21,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:21,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:04:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:22,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:04:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:22,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 07:04:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:22,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 07:04:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:22,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 07:04:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:22,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-16 07:04:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:22,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 07:04:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:22,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 07:04:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:22,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-16 07:04:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:22,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-16 07:04:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:22,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-16 07:04:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:22,150 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-16 07:04:22,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:04:22,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175039003] [2024-11-16 07:04:22,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175039003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:04:22,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858515571] [2024-11-16 07:04:22,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:22,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:04:22,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:04:22,153 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 07:04:22,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 07:04:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:22,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-16 07:04:22,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:04:22,266 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-16 07:04:22,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:04:22,384 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-16 07:04:22,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858515571] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 07:04:22,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 07:04:22,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2024-11-16 07:04:22,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024176315] [2024-11-16 07:04:22,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 07:04:22,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 07:04:22,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:04:22,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 07:04:22,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-16 07:04:22,389 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 7 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-16 07:04:22,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:04:22,599 INFO L93 Difference]: Finished difference Result 138 states and 186 transitions. [2024-11-16 07:04:22,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 07:04:22,601 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 7 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 69 [2024-11-16 07:04:22,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:04:22,605 INFO L225 Difference]: With dead ends: 138 [2024-11-16 07:04:22,605 INFO L226 Difference]: Without dead ends: 129 [2024-11-16 07:04:22,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 149 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-16 07:04:22,606 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 28 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 07:04:22,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 432 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 07:04:22,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-16 07:04:22,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 116. [2024-11-16 07:04:22,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 69 states have (on average 1.144927536231884) internal successors, (79), 73 states have internal predecessors, (79), 39 states have call successors, (39), 7 states have call predecessors, (39), 7 states have return successors, (38), 35 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-16 07:04:22,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 156 transitions. [2024-11-16 07:04:22,640 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 156 transitions. Word has length 69 [2024-11-16 07:04:22,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:04:22,640 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 156 transitions. [2024-11-16 07:04:22,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 7 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-16 07:04:22,641 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 156 transitions. [2024-11-16 07:04:22,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-16 07:04:22,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:04:22,644 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:04:22,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 07:04:22,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:04:22,846 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:04:22,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:04:22,847 INFO L85 PathProgramCache]: Analyzing trace with hash -616299726, now seen corresponding path program 1 times [2024-11-16 07:04:22,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:04:22,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76004500] [2024-11-16 07:04:22,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:22,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:04:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 07:04:22,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738666375] [2024-11-16 07:04:22,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:22,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:04:22,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:04:22,866 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 07:04:22,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 07:04:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:22,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-16 07:04:22,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:04:23,267 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-16 07:04:23,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:04:23,521 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-16 07:04:23,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:04:23,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76004500] [2024-11-16 07:04:23,522 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 07:04:23,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738666375] [2024-11-16 07:04:23,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738666375] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 07:04:23,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-16 07:04:23,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2024-11-16 07:04:23,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573138408] [2024-11-16 07:04:23,523 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-16 07:04:23,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 07:04:23,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:04:23,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 07:04:23,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-16 07:04:23,525 INFO L87 Difference]: Start difference. First operand 116 states and 156 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 13 states have internal predecessors, (42), 8 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2024-11-16 07:04:24,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:04:24,544 INFO L93 Difference]: Finished difference Result 170 states and 233 transitions. [2024-11-16 07:04:24,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 07:04:24,545 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 13 states have internal predecessors, (42), 8 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) Word has length 76 [2024-11-16 07:04:24,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:04:24,546 INFO L225 Difference]: With dead ends: 170 [2024-11-16 07:04:24,547 INFO L226 Difference]: Without dead ends: 166 [2024-11-16 07:04:24,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-11-16 07:04:24,548 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 48 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 07:04:24,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 328 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 07:04:24,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-16 07:04:24,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 163. [2024-11-16 07:04:24,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 96 states have (on average 1.15625) internal successors, (111), 103 states have internal predecessors, (111), 58 states have call successors, (58), 8 states have call predecessors, (58), 8 states have return successors, (56), 51 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-16 07:04:24,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 225 transitions. [2024-11-16 07:04:24,585 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 225 transitions. Word has length 76 [2024-11-16 07:04:24,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:04:24,585 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 225 transitions. [2024-11-16 07:04:24,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 13 states have internal predecessors, (42), 8 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2024-11-16 07:04:24,586 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 225 transitions. [2024-11-16 07:04:24,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-16 07:04:24,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:04:24,587 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:04:24,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 07:04:24,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:04:24,790 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:04:24,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:04:24,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1530494997, now seen corresponding path program 2 times [2024-11-16 07:04:24,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:04:24,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812160086] [2024-11-16 07:04:24,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:24,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:04:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 07:04:24,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1171503700] [2024-11-16 07:04:24,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 07:04:24,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:04:24,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:04:24,809 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 07:04:24,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 07:04:24,873 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 07:04:24,873 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 07:04:24,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-16 07:04:24,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:04:25,077 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-16 07:04:25,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:04:25,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:04:25,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812160086] [2024-11-16 07:04:25,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 07:04:25,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171503700] [2024-11-16 07:04:25,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171503700] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:04:25,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-16 07:04:25,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2024-11-16 07:04:25,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211770000] [2024-11-16 07:04:25,162 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-16 07:04:25,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 07:04:25,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:04:25,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 07:04:25,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-16 07:04:25,163 INFO L87 Difference]: Start difference. First operand 163 states and 225 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-16 07:04:25,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:04:25,304 INFO L93 Difference]: Finished difference Result 176 states and 236 transitions. [2024-11-16 07:04:25,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 07:04:25,305 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 81 [2024-11-16 07:04:25,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:04:25,307 INFO L225 Difference]: With dead ends: 176 [2024-11-16 07:04:25,307 INFO L226 Difference]: Without dead ends: 173 [2024-11-16 07:04:25,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-16 07:04:25,309 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 14 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 07:04:25,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 242 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 07:04:25,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-16 07:04:25,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 171. [2024-11-16 07:04:25,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 102 states have (on average 1.1470588235294117) internal successors, (117), 109 states have internal predecessors, (117), 58 states have call successors, (58), 10 states have call predecessors, (58), 10 states have return successors, (56), 51 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-16 07:04:25,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 231 transitions. [2024-11-16 07:04:25,342 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 231 transitions. Word has length 81 [2024-11-16 07:04:25,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:04:25,342 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 231 transitions. [2024-11-16 07:04:25,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-16 07:04:25,343 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 231 transitions. [2024-11-16 07:04:25,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-16 07:04:25,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:04:25,344 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:04:25,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-16 07:04:25,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-16 07:04:25,549 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:04:25,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:04:25,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1524123438, now seen corresponding path program 3 times [2024-11-16 07:04:25,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:04:25,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675247301] [2024-11-16 07:04:25,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:25,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:04:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 07:04:25,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [796435410] [2024-11-16 07:04:25,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 07:04:25,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:04:25,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:04:25,570 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 07:04:25,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 07:04:25,633 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 07:04:25,633 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 07:04:25,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-16 07:04:25,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:04:26,433 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 43 proven. 22 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-16 07:04:26,433 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:04:28,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:04:28,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675247301] [2024-11-16 07:04:28,033 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 07:04:28,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796435410] [2024-11-16 07:04:28,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796435410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:04:28,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-16 07:04:28,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-11-16 07:04:28,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648105793] [2024-11-16 07:04:28,034 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-16 07:04:28,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 07:04:28,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:04:28,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 07:04:28,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2024-11-16 07:04:28,036 INFO L87 Difference]: Start difference. First operand 171 states and 231 transitions. Second operand has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-16 07:04:28,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:04:28,440 INFO L93 Difference]: Finished difference Result 180 states and 239 transitions. [2024-11-16 07:04:28,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 07:04:28,441 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 86 [2024-11-16 07:04:28,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:04:28,443 INFO L225 Difference]: With dead ends: 180 [2024-11-16 07:04:28,443 INFO L226 Difference]: Without dead ends: 177 [2024-11-16 07:04:28,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2024-11-16 07:04:28,444 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 28 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 07:04:28,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 348 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 07:04:28,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-16 07:04:28,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 175. [2024-11-16 07:04:28,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 105 states have (on average 1.1428571428571428) internal successors, (120), 112 states have internal predecessors, (120), 58 states have call successors, (58), 11 states have call predecessors, (58), 11 states have return successors, (56), 51 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-16 07:04:28,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 234 transitions. [2024-11-16 07:04:28,474 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 234 transitions. Word has length 86 [2024-11-16 07:04:28,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:04:28,475 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 234 transitions. [2024-11-16 07:04:28,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-16 07:04:28,475 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 234 transitions. [2024-11-16 07:04:28,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-16 07:04:28,476 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:04:28,476 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:04:28,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-16 07:04:28,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-16 07:04:28,677 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:04:28,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:04:28,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1563243110, now seen corresponding path program 2 times [2024-11-16 07:04:28,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:04:28,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136035773] [2024-11-16 07:04:28,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:28,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:04:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 07:04:28,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1533359413] [2024-11-16 07:04:28,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 07:04:28,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:04:28,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:04:28,711 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 07:04:28,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 07:04:28,764 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 07:04:28,764 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 07:04:28,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-16 07:04:28,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:04:28,861 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-16 07:04:28,861 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:04:28,949 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2024-11-16 07:04:28,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:04:28,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136035773] [2024-11-16 07:04:28,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 07:04:28,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533359413] [2024-11-16 07:04:28,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533359413] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 07:04:28,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 07:04:28,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-11-16 07:04:28,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291685454] [2024-11-16 07:04:28,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 07:04:28,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 07:04:28,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:04:28,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 07:04:28,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-16 07:04:28,951 INFO L87 Difference]: Start difference. First operand 175 states and 234 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-16 07:04:28,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:04:28,998 INFO L93 Difference]: Finished difference Result 182 states and 240 transitions. [2024-11-16 07:04:28,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 07:04:28,999 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 90 [2024-11-16 07:04:28,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:04:29,001 INFO L225 Difference]: With dead ends: 182 [2024-11-16 07:04:29,001 INFO L226 Difference]: Without dead ends: 179 [2024-11-16 07:04:29,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 170 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-16 07:04:29,003 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 4 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 07:04:29,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 141 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 07:04:29,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-16 07:04:29,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 152. [2024-11-16 07:04:29,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 93 states have (on average 1.1397849462365592) internal successors, (106), 97 states have internal predecessors, (106), 47 states have call successors, (47), 11 states have call predecessors, (47), 11 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-16 07:04:29,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 198 transitions. [2024-11-16 07:04:29,029 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 198 transitions. Word has length 90 [2024-11-16 07:04:29,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:04:29,029 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 198 transitions. [2024-11-16 07:04:29,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-16 07:04:29,030 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 198 transitions. [2024-11-16 07:04:29,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-16 07:04:29,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:04:29,031 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:04:29,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-16 07:04:29,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-16 07:04:29,231 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:04:29,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:04:29,232 INFO L85 PathProgramCache]: Analyzing trace with hash 797294596, now seen corresponding path program 1 times [2024-11-16 07:04:29,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:04:29,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906273136] [2024-11-16 07:04:29,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:29,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:04:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 07:04:29,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [858005742] [2024-11-16 07:04:29,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:29,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:04:29,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:04:29,256 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 07:04:29,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 07:04:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:29,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-16 07:04:29,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:04:29,844 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 22 proven. 19 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-11-16 07:04:29,845 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:04:30,523 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-16 07:04:30,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:04:30,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906273136] [2024-11-16 07:04:30,523 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 07:04:30,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858005742] [2024-11-16 07:04:30,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858005742] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 07:04:30,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-16 07:04:30,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2024-11-16 07:04:30,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786087919] [2024-11-16 07:04:30,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-16 07:04:30,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-16 07:04:30,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:04:30,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-16 07:04:30,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-16 07:04:30,526 INFO L87 Difference]: Start difference. First operand 152 states and 198 transitions. Second operand has 21 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 10 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2024-11-16 07:04:33,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:04:33,009 INFO L93 Difference]: Finished difference Result 263 states and 370 transitions. [2024-11-16 07:04:33,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 07:04:33,009 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 10 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) Word has length 92 [2024-11-16 07:04:33,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:04:33,011 INFO L225 Difference]: With dead ends: 263 [2024-11-16 07:04:33,011 INFO L226 Difference]: Without dead ends: 258 [2024-11-16 07:04:33,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=255, Invalid=1151, Unknown=0, NotChecked=0, Total=1406 [2024-11-16 07:04:33,012 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 102 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 07:04:33,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 654 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 07:04:33,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-16 07:04:33,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 255. [2024-11-16 07:04:33,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 147 states have (on average 1.183673469387755) internal successors, (174), 150 states have internal predecessors, (174), 94 states have call successors, (94), 13 states have call predecessors, (94), 13 states have return successors, (92), 91 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-16 07:04:33,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 360 transitions. [2024-11-16 07:04:33,081 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 360 transitions. Word has length 92 [2024-11-16 07:04:33,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:04:33,081 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 360 transitions. [2024-11-16 07:04:33,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 10 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2024-11-16 07:04:33,082 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 360 transitions. [2024-11-16 07:04:33,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-16 07:04:33,083 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:04:33,083 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-16 07:04:33,100 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-16 07:04:33,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-16 07:04:33,288 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:04:33,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:04:33,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1889884019, now seen corresponding path program 4 times [2024-11-16 07:04:33,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:04:33,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664656394] [2024-11-16 07:04:33,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:33,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:04:33,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:33,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:04:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:33,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 07:04:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:33,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 07:04:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:33,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 07:04:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:33,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-16 07:04:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:33,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 07:04:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:33,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 07:04:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:33,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-16 07:04:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:33,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-16 07:04:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:33,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-16 07:04:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:33,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-16 07:04:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:33,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-16 07:04:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:33,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-16 07:04:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:33,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-11-16 07:04:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:33,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-11-16 07:04:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:33,419 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-11-16 07:04:33,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:04:33,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664656394] [2024-11-16 07:04:33,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664656394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 07:04:33,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 07:04:33,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 07:04:33,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499628259] [2024-11-16 07:04:33,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 07:04:33,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 07:04:33,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:04:33,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 07:04:33,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 07:04:33,421 INFO L87 Difference]: Start difference. First operand 255 states and 360 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-16 07:04:33,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:04:33,529 INFO L93 Difference]: Finished difference Result 321 states and 448 transitions. [2024-11-16 07:04:33,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 07:04:33,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 103 [2024-11-16 07:04:33,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:04:33,531 INFO L225 Difference]: With dead ends: 321 [2024-11-16 07:04:33,531 INFO L226 Difference]: Without dead ends: 230 [2024-11-16 07:04:33,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-16 07:04:33,532 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 8 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 07:04:33,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 189 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 07:04:33,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-16 07:04:33,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 215. [2024-11-16 07:04:33,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 123 states have (on average 1.1382113821138211) internal successors, (140), 126 states have internal predecessors, (140), 78 states have call successors, (78), 13 states have call predecessors, (78), 13 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-16 07:04:33,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 294 transitions. [2024-11-16 07:04:33,595 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 294 transitions. Word has length 103 [2024-11-16 07:04:33,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:04:33,595 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 294 transitions. [2024-11-16 07:04:33,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-16 07:04:33,596 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 294 transitions. [2024-11-16 07:04:33,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-16 07:04:33,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:04:33,597 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:04:33,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 07:04:33,597 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:04:33,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:04:33,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1162616412, now seen corresponding path program 1 times [2024-11-16 07:04:33,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:04:33,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509557299] [2024-11-16 07:04:33,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:33,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:04:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 07:04:33,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1892316889] [2024-11-16 07:04:33,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:33,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:04:33,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:04:33,622 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 07:04:33,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-16 07:04:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:33,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-16 07:04:33,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:04:34,844 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 57 proven. 32 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-16 07:04:34,844 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:04:35,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:04:35,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509557299] [2024-11-16 07:04:35,872 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 07:04:35,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892316889] [2024-11-16 07:04:35,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892316889] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:04:35,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-16 07:04:35,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-16 07:04:35,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920255796] [2024-11-16 07:04:35,872 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-16 07:04:35,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-16 07:04:35,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:04:35,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-16 07:04:35,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2024-11-16 07:04:35,874 INFO L87 Difference]: Start difference. First operand 215 states and 294 transitions. Second operand has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 13 states have internal predecessors, (35), 7 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2024-11-16 07:04:36,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:04:36,697 INFO L93 Difference]: Finished difference Result 228 states and 305 transitions. [2024-11-16 07:04:36,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 07:04:36,697 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 13 states have internal predecessors, (35), 7 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) Word has length 109 [2024-11-16 07:04:36,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:04:36,699 INFO L225 Difference]: With dead ends: 228 [2024-11-16 07:04:36,699 INFO L226 Difference]: Without dead ends: 225 [2024-11-16 07:04:36,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=134, Invalid=568, Unknown=0, NotChecked=0, Total=702 [2024-11-16 07:04:36,700 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 33 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 07:04:36,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 446 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 07:04:36,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-16 07:04:36,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 223. [2024-11-16 07:04:36,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 129 states have (on average 1.1317829457364341) internal successors, (146), 132 states have internal predecessors, (146), 78 states have call successors, (78), 15 states have call predecessors, (78), 15 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-16 07:04:36,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 300 transitions. [2024-11-16 07:04:36,772 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 300 transitions. Word has length 109 [2024-11-16 07:04:36,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:04:36,772 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 300 transitions. [2024-11-16 07:04:36,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 13 states have internal predecessors, (35), 7 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2024-11-16 07:04:36,773 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 300 transitions. [2024-11-16 07:04:36,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-16 07:04:36,775 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:04:36,775 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:04:36,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-16 07:04:36,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-16 07:04:36,980 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:04:36,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:04:36,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1963907256, now seen corresponding path program 1 times [2024-11-16 07:04:36,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:04:36,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252246553] [2024-11-16 07:04:36,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:36,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:04:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:37,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 07:04:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:37,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 07:04:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:37,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 07:04:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:37,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 07:04:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:37,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-16 07:04:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:37,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 07:04:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:37,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 07:04:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:37,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-16 07:04:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:37,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-16 07:04:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:37,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-16 07:04:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:37,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-16 07:04:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:37,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-16 07:04:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:37,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-16 07:04:37,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:37,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-11-16 07:04:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:37,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-16 07:04:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:37,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-16 07:04:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:37,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-11-16 07:04:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:37,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-11-16 07:04:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:37,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-11-16 07:04:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:37,183 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 46 proven. 11 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-11-16 07:04:37,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:04:37,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252246553] [2024-11-16 07:04:37,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252246553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:04:37,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143095993] [2024-11-16 07:04:37,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:37,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:04:37,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:04:37,187 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 07:04:37,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-16 07:04:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 07:04:37,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 07:04:37,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:04:37,299 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 92 proven. 11 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2024-11-16 07:04:37,299 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:04:37,407 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 46 proven. 11 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-11-16 07:04:37,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143095993] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 07:04:37,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 07:04:37,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2024-11-16 07:04:37,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768861778] [2024-11-16 07:04:37,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 07:04:37,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 07:04:37,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:04:37,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 07:04:37,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 07:04:37,411 INFO L87 Difference]: Start difference. First operand 223 states and 300 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-16 07:04:37,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:04:37,613 INFO L93 Difference]: Finished difference Result 257 states and 346 transitions. [2024-11-16 07:04:37,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 07:04:37,614 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 124 [2024-11-16 07:04:37,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:04:37,616 INFO L225 Difference]: With dead ends: 257 [2024-11-16 07:04:37,616 INFO L226 Difference]: Without dead ends: 244 [2024-11-16 07:04:37,617 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 283 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-16 07:04:37,617 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 23 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 07:04:37,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 364 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 07:04:37,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-16 07:04:37,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 222. [2024-11-16 07:04:37,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 129 states have (on average 1.124031007751938) internal successors, (145), 131 states have internal predecessors, (145), 77 states have call successors, (77), 15 states have call predecessors, (77), 15 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2024-11-16 07:04:37,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 297 transitions. [2024-11-16 07:04:37,673 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 297 transitions. Word has length 124 [2024-11-16 07:04:37,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:04:37,673 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 297 transitions. [2024-11-16 07:04:37,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-16 07:04:37,673 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 297 transitions. [2024-11-16 07:04:37,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-16 07:04:37,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:04:37,675 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 6, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:04:37,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-16 07:04:37,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-16 07:04:37,876 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:04:37,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:04:37,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1457294975, now seen corresponding path program 2 times [2024-11-16 07:04:37,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:04:37,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323550369] [2024-11-16 07:04:37,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:37,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:04:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 07:04:37,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [294957393] [2024-11-16 07:04:37,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 07:04:37,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:04:37,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:04:37,897 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 07:04:37,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-16 07:04:37,974 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 07:04:37,974 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 07:04:37,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-16 07:04:37,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:04:38,563 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 61 proven. 59 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2024-11-16 07:04:38,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:04:38,867 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 78 proven. 7 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2024-11-16 07:04:38,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:04:38,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323550369] [2024-11-16 07:04:38,868 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 07:04:38,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294957393] [2024-11-16 07:04:38,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294957393] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 07:04:38,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-16 07:04:38,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8] total 22 [2024-11-16 07:04:38,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965560077] [2024-11-16 07:04:38,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-16 07:04:38,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-16 07:04:38,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:04:38,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-16 07:04:38,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2024-11-16 07:04:38,869 INFO L87 Difference]: Start difference. First operand 222 states and 297 transitions. Second operand has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 19 states have internal predecessors, (62), 9 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 9 states have call predecessors, (30), 9 states have call successors, (30) [2024-11-16 07:04:40,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:04:40,745 INFO L93 Difference]: Finished difference Result 257 states and 345 transitions. [2024-11-16 07:04:40,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-16 07:04:40,746 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 19 states have internal predecessors, (62), 9 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 9 states have call predecessors, (30), 9 states have call successors, (30) Word has length 126 [2024-11-16 07:04:40,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:04:40,748 INFO L225 Difference]: With dead ends: 257 [2024-11-16 07:04:40,748 INFO L226 Difference]: Without dead ends: 253 [2024-11-16 07:04:40,749 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2024-11-16 07:04:40,749 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 70 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 07:04:40,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 654 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 07:04:40,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-16 07:04:40,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 224. [2024-11-16 07:04:40,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 132 states have (on average 1.121212121212121) internal successors, (148), 133 states have internal predecessors, (148), 75 states have call successors, (75), 16 states have call predecessors, (75), 16 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2024-11-16 07:04:40,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 297 transitions. [2024-11-16 07:04:40,814 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 297 transitions. Word has length 126 [2024-11-16 07:04:40,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:04:40,814 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 297 transitions. [2024-11-16 07:04:40,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 19 states have internal predecessors, (62), 9 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 9 states have call predecessors, (30), 9 states have call successors, (30) [2024-11-16 07:04:40,815 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 297 transitions. [2024-11-16 07:04:40,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-16 07:04:40,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:04:40,816 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2024-11-16 07:04:40,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-16 07:04:41,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:04:41,021 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:04:41,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:04:41,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1922555051, now seen corresponding path program 3 times [2024-11-16 07:04:41,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:04:41,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305922057] [2024-11-16 07:04:41,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:41,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:04:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 07:04:41,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1502370221] [2024-11-16 07:04:41,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 07:04:41,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:04:41,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:04:41,066 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 07:04:41,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-16 07:04:41,148 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-16 07:04:41,148 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 07:04:41,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-16 07:04:41,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:04:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 37 proven. 45 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2024-11-16 07:04:41,726 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:04:43,113 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 28 proven. 39 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2024-11-16 07:04:43,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:04:43,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305922057] [2024-11-16 07:04:43,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 07:04:43,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502370221] [2024-11-16 07:04:43,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502370221] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 07:04:43,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-16 07:04:43,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2024-11-16 07:04:43,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928023006] [2024-11-16 07:04:43,114 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-16 07:04:43,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-16 07:04:43,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:04:43,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-16 07:04:43,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2024-11-16 07:04:43,115 INFO L87 Difference]: Start difference. First operand 224 states and 297 transitions. Second operand has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 18 states have internal predecessors, (56), 11 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (37), 12 states have call predecessors, (37), 11 states have call successors, (37) [2024-11-16 07:04:51,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:04:51,462 INFO L93 Difference]: Finished difference Result 329 states and 453 transitions. [2024-11-16 07:04:51,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-16 07:04:51,462 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 18 states have internal predecessors, (56), 11 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (37), 12 states have call predecessors, (37), 11 states have call successors, (37) Word has length 127 [2024-11-16 07:04:51,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:04:51,464 INFO L225 Difference]: With dead ends: 329 [2024-11-16 07:04:51,464 INFO L226 Difference]: Without dead ends: 326 [2024-11-16 07:04:51,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=305, Invalid=1255, Unknown=0, NotChecked=0, Total=1560 [2024-11-16 07:04:51,465 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 88 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-16 07:04:51,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 827 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-16 07:04:51,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-16 07:04:51,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 289. [2024-11-16 07:04:51,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 166 states have (on average 1.1385542168674698) internal successors, (189), 167 states have internal predecessors, (189), 103 states have call successors, (103), 19 states have call predecessors, (103), 19 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-16 07:04:51,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 394 transitions. [2024-11-16 07:04:51,578 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 394 transitions. Word has length 127 [2024-11-16 07:04:51,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:04:51,579 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 394 transitions. [2024-11-16 07:04:51,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 18 states have internal predecessors, (56), 11 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (37), 12 states have call predecessors, (37), 11 states have call successors, (37) [2024-11-16 07:04:51,579 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 394 transitions. [2024-11-16 07:04:51,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-16 07:04:51,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:04:51,581 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 07:04:51,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-16 07:04:51,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-16 07:04:51,782 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:04:51,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:04:51,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1667388634, now seen corresponding path program 4 times [2024-11-16 07:04:51,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:04:51,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014619523] [2024-11-16 07:04:51,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:51,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:04:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 07:04:51,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1480787056] [2024-11-16 07:04:51,801 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 07:04:51,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:04:51,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:04:51,803 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 07:04:51,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-16 07:04:51,885 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 07:04:51,885 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 07:04:51,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-16 07:04:51,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:04:53,711 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 57 proven. 56 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-11-16 07:04:53,711 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:04:54,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 07:04:54,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014619523] [2024-11-16 07:04:54,700 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-16 07:04:54,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480787056] [2024-11-16 07:04:54,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480787056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 07:04:54,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-16 07:04:54,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-11-16 07:04:54,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486757039] [2024-11-16 07:04:54,700 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-16 07:04:54,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 07:04:54,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 07:04:54,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 07:04:54,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-11-16 07:04:54,701 INFO L87 Difference]: Start difference. First operand 289 states and 394 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 13 states have internal predecessors, (39), 7 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-16 07:04:56,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 07:04:56,427 INFO L93 Difference]: Finished difference Result 341 states and 455 transitions. [2024-11-16 07:04:56,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 07:04:56,428 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 13 states have internal predecessors, (39), 7 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) Word has length 131 [2024-11-16 07:04:56,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 07:04:56,429 INFO L225 Difference]: With dead ends: 341 [2024-11-16 07:04:56,429 INFO L226 Difference]: Without dead ends: 338 [2024-11-16 07:04:56,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2024-11-16 07:04:56,430 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 29 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 07:04:56,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 523 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 07:04:56,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2024-11-16 07:04:56,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 334. [2024-11-16 07:04:56,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 194 states have (on average 1.1288659793814433) internal successors, (219), 195 states have internal predecessors, (219), 115 states have call successors, (115), 24 states have call predecessors, (115), 24 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2024-11-16 07:04:56,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 448 transitions. [2024-11-16 07:04:56,547 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 448 transitions. Word has length 131 [2024-11-16 07:04:56,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 07:04:56,547 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 448 transitions. [2024-11-16 07:04:56,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 13 states have internal predecessors, (39), 7 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-16 07:04:56,548 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 448 transitions. [2024-11-16 07:04:56,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-16 07:04:56,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 07:04:56,549 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2024-11-16 07:04:56,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-16 07:04:56,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 07:04:56,753 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 07:04:56,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 07:04:56,753 INFO L85 PathProgramCache]: Analyzing trace with hash 853351826, now seen corresponding path program 5 times [2024-11-16 07:04:56,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 07:04:56,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756146736] [2024-11-16 07:04:56,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 07:04:56,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 07:04:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-16 07:04:56,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [591786770] [2024-11-16 07:04:56,788 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 07:04:56,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 07:04:56,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 07:04:56,789 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 07:04:56,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-16 07:04:57,007 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-16 07:04:57,008 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 07:04:57,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-16 07:04:57,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 07:04:58,064 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 105 proven. 75 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-11-16 07:04:58,064 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 07:05:34,897 WARN L286 SmtUtils]: Spent 7.29s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-16 07:05:40,312 WARN L286 SmtUtils]: Spent 5.02s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-16 07:05:46,375 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse1 (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1|)) (.cse9 (* 2 |c_ULTIMATE.start_main_~b~0#1|)) (.cse6 (* |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~k~0#1|))) (let ((.cse5 (+ .cse9 .cse6)) (.cse10 (* .cse0 2)) (.cse11 (* .cse1 2)) (.cse2 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~b~0#1|)) (.cse12 (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse13 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1| |c_ULTIMATE.start_main_~k~0#1|)) (.cse3 (* |c_ULTIMATE.start_main_~xy~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse7 (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~p~0#1|)) (.cse8 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~r~0#1|)) (.cse4 (* |c_ULTIMATE.start_main_~yy~0#1| |c_ULTIMATE.start_main_~s~0#1|))) (or (not (= (+ .cse0 .cse1 .cse2) (+ .cse3 .cse4 |c_ULTIMATE.start_main_~b~0#1|))) (< |c_ULTIMATE.start_main_~a~0#1| .cse5) (< (+ (* 3 |c_ULTIMATE.start_main_~b~0#1|) .cse6) (+ |c_ULTIMATE.start_main_~a~0#1| 1)) (= |c_ULTIMATE.start_main_~a~0#1| .cse5) (not (= (+ .cse7 .cse8 .cse9 .cse6) (+ .cse10 |c_ULTIMATE.start_main_~a~0#1| .cse11 .cse12 .cse13))) (not (= (+ |c_ULTIMATE.start_main_~c~0#1| .cse6) |c_ULTIMATE.start_main_~a~0#1|)) (= (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~k~0#1|) .cse10 |c_ULTIMATE.start_main_~a~0#1| .cse11 (* |c_ULTIMATE.start_main_~yy~0#1| |c_ULTIMATE.start_main_~r~0#1|) (* |c_ULTIMATE.start_main_~xy~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* 2 .cse2) .cse12 .cse13) (+ (* |c_ULTIMATE.start_main_~xy~0#1| |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~a~0#1|) (* .cse3 2) .cse7 (* |c_ULTIMATE.start_main_~yy~0#1| |c_ULTIMATE.start_main_~s~0#1| |c_ULTIMATE.start_main_~k~0#1|) .cse8 .cse9 (* 2 .cse4) .cse6))))) is different from true