./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/rangesum40.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/reducercommutativity/rangesum40.i -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 a418834dbd1069728d4982a06f4275da717a1d93e3d5061fbbc21c5c3a319ddf --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:02:22,296 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:02:22,369 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:02:22,376 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:02:22,377 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:02:22,415 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:02:22,416 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:02:22,416 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:02:22,417 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:02:22,420 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:02:22,421 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:02:22,421 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:02:22,421 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:02:22,422 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:02:22,422 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:02:22,422 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:02:22,422 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:02:22,422 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:02:22,423 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:02:22,423 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:02:22,423 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:02:22,426 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:02:22,427 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:02:22,427 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:02:22,427 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:02:22,427 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:02:22,427 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:02:22,428 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:02:22,428 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:02:22,428 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:02:22,428 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:02:22,429 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:02:22,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:02:22,429 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:02:22,429 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:02:22,429 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:02:22,429 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:02:22,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:02:22,430 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:02:22,430 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:02:22,430 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:02:22,431 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:02:22,431 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a418834dbd1069728d4982a06f4275da717a1d93e3d5061fbbc21c5c3a319ddf [2024-11-09 18:02:22,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:02:22,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:02:22,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:02:22,787 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:02:22,787 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:02:22,788 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/rangesum40.i [2024-11-09 18:02:24,251 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:02:24,464 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:02:24,464 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/rangesum40.i [2024-11-09 18:02:24,475 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8d3f5a3d/dca20f76363d430fa032f137595420f4/FLAG3dd07ae98 [2024-11-09 18:02:24,825 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8d3f5a3d/dca20f76363d430fa032f137595420f4 [2024-11-09 18:02:24,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:02:24,829 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:02:24,830 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:02:24,830 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:02:24,835 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:02:24,835 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:02:24" (1/1) ... [2024-11-09 18:02:24,836 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@985c382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:24, skipping insertion in model container [2024-11-09 18:02:24,836 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:02:24" (1/1) ... [2024-11-09 18:02:24,866 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:02:25,036 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/reducercommutativity/rangesum40.i[1465,1478] [2024-11-09 18:02:25,040 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:02:25,047 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:02:25,066 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/reducercommutativity/rangesum40.i[1465,1478] [2024-11-09 18:02:25,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:02:25,083 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:02:25,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:25 WrapperNode [2024-11-09 18:02:25,084 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:02:25,085 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:02:25,085 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:02:25,086 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:02:25,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:25" (1/1) ... [2024-11-09 18:02:25,099 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:25" (1/1) ... [2024-11-09 18:02:25,116 INFO L138 Inliner]: procedures = 17, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2024-11-09 18:02:25,117 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:02:25,118 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:02:25,118 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:02:25,118 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:02:25,128 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:25" (1/1) ... [2024-11-09 18:02:25,128 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:25" (1/1) ... [2024-11-09 18:02:25,130 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:25" (1/1) ... [2024-11-09 18:02:25,144 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-11-09 18:02:25,145 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:25" (1/1) ... [2024-11-09 18:02:25,145 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:25" (1/1) ... [2024-11-09 18:02:25,151 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:25" (1/1) ... [2024-11-09 18:02:25,151 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:25" (1/1) ... [2024-11-09 18:02:25,153 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:25" (1/1) ... [2024-11-09 18:02:25,154 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:25" (1/1) ... [2024-11-09 18:02:25,155 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:02:25,156 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:02:25,156 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:02:25,157 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:02:25,157 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:25" (1/1) ... [2024-11-09 18:02:25,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:02:25,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:02:25,189 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) [2024-11-09 18:02:25,194 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 [2024-11-09 18:02:25,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:02:25,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:02:25,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 18:02:25,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 18:02:25,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 18:02:25,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 18:02:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:02:25,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:02:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 18:02:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 18:02:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2024-11-09 18:02:25,235 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2024-11-09 18:02:25,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 18:02:25,310 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:02:25,311 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:02:25,477 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L42: call ULTIMATE.dealloc(main_~#x~0#1.base, main_~#x~0#1.offset);havoc main_~#x~0#1.base, main_~#x~0#1.offset; [2024-11-09 18:02:25,517 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-09 18:02:25,517 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:02:25,532 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:02:25,534 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:02:25,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:02:25 BoogieIcfgContainer [2024-11-09 18:02:25,535 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:02:25,538 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:02:25,538 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:02:25,541 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:02:25,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:02:24" (1/3) ... [2024-11-09 18:02:25,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0dc68d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:02:25, skipping insertion in model container [2024-11-09 18:02:25,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:25" (2/3) ... [2024-11-09 18:02:25,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0dc68d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:02:25, skipping insertion in model container [2024-11-09 18:02:25,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:02:25" (3/3) ... [2024-11-09 18:02:25,546 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum40.i [2024-11-09 18:02:25,563 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:02:25,563 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:02:25,623 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:02:25,630 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;@383081c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:02:25,630 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:02:25,634 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 23 states have (on average 1.434782608695652) internal successors, (33), 24 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:02:25,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 18:02:25,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:02:25,644 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:02:25,644 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:02:25,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:02:25,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1908990660, now seen corresponding path program 1 times [2024-11-09 18:02:25,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:02:25,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717476430] [2024-11-09 18:02:25,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:25,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:02:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:25,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-09 18:02:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:25,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 18:02:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:25,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-09 18:02:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:25,905 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 18:02:25,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:02:25,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717476430] [2024-11-09 18:02:25,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717476430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:02:25,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:02:25,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:02:25,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862002508] [2024-11-09 18:02:25,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:02:25,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 18:02:25,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:02:25,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 18:02:25,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:02:25,944 INFO L87 Difference]: Start difference. First operand has 29 states, 23 states have (on average 1.434782608695652) internal successors, (33), 24 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 18:02:25,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:02:25,966 INFO L93 Difference]: Finished difference Result 54 states and 75 transitions. [2024-11-09 18:02:25,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 18:02:25,969 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-09 18:02:25,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:02:25,976 INFO L225 Difference]: With dead ends: 54 [2024-11-09 18:02:25,976 INFO L226 Difference]: Without dead ends: 25 [2024-11-09 18:02:25,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:02:25,983 INFO L432 NwaCegarLoop]: 35 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, 35 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 [2024-11-09 18:02:25,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:02:26,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-09 18:02:26,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-09 18:02:26,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:02:26,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2024-11-09 18:02:26,027 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 29 [2024-11-09 18:02:26,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:02:26,028 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2024-11-09 18:02:26,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 18:02:26,029 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2024-11-09 18:02:26,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 18:02:26,032 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:02:26,032 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:02:26,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:02:26,033 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:02:26,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:02:26,038 INFO L85 PathProgramCache]: Analyzing trace with hash 749000362, now seen corresponding path program 1 times [2024-11-09 18:02:26,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:02:26,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192685316] [2024-11-09 18:02:26,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:26,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:02:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:26,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 18:02:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:26,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 18:02:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:26,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-09 18:02:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:26,235 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:02:26,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:02:26,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192685316] [2024-11-09 18:02:26,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192685316] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:02:26,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263887581] [2024-11-09 18:02:26,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:26,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:26,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:02:26,239 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) [2024-11-09 18:02:26,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 18:02:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:26,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:02:26,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:02:26,397 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:02:26,398 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:02:26,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263887581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:02:26,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:02:26,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-09 18:02:26,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453618482] [2024-11-09 18:02:26,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:02:26,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:02:26,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:02:26,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:02:26,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:02:26,404 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 18:02:26,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:02:26,422 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2024-11-09 18:02:26,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:02:26,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2024-11-09 18:02:26,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:02:26,424 INFO L225 Difference]: With dead ends: 48 [2024-11-09 18:02:26,425 INFO L226 Difference]: Without dead ends: 27 [2024-11-09 18:02:26,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:02:26,427 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:02:26,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:02:26,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-09 18:02:26,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-09 18:02:26,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:02:26,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-11-09 18:02:26,440 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 34 [2024-11-09 18:02:26,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:02:26,440 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-11-09 18:02:26,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 18:02:26,442 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-11-09 18:02:26,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 18:02:26,444 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:02:26,444 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:02:26,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 18:02:26,648 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 [2024-11-09 18:02:26,649 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:02:26,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:02:26,650 INFO L85 PathProgramCache]: Analyzing trace with hash 325830121, now seen corresponding path program 1 times [2024-11-09 18:02:26,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:02:26,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296028409] [2024-11-09 18:02:26,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:26,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:02:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:26,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:02:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:26,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-09 18:02:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:26,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 18:02:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:02:26,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:02:26,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296028409] [2024-11-09 18:02:26,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296028409] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:02:26,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133505941] [2024-11-09 18:02:26,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:26,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:26,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:02:26,818 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) [2024-11-09 18:02:26,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 18:02:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:26,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:02:26,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:02:26,924 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 18:02:26,924 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:02:26,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133505941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:02:26,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:02:26,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2024-11-09 18:02:26,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104817605] [2024-11-09 18:02:26,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:02:26,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:02:26,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:02:26,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:02:26,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:02:26,927 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 18:02:26,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:02:26,943 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2024-11-09 18:02:26,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:02:26,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2024-11-09 18:02:26,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:02:26,944 INFO L225 Difference]: With dead ends: 50 [2024-11-09 18:02:26,945 INFO L226 Difference]: Without dead ends: 31 [2024-11-09 18:02:26,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:02:26,947 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:02:26,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 53 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:02:26,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-09 18:02:26,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2024-11-09 18:02:26,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:02:26,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-11-09 18:02:26,953 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 36 [2024-11-09 18:02:26,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:02:26,954 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-11-09 18:02:26,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 18:02:26,954 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-11-09 18:02:26,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-09 18:02:26,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:02:26,955 INFO L215 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:02:26,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 18:02:27,170 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 [2024-11-09 18:02:27,171 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:02:27,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:02:27,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1445204300, now seen corresponding path program 1 times [2024-11-09 18:02:27,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:02:27,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103679443] [2024-11-09 18:02:27,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:27,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:02:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:27,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:02:27,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:27,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-09 18:02:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:27,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-09 18:02:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:27,324 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 18:02:27,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:02:27,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103679443] [2024-11-09 18:02:27,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103679443] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:02:27,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497994290] [2024-11-09 18:02:27,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:27,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:27,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:02:27,329 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) [2024-11-09 18:02:27,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 18:02:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:27,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:02:27,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:02:27,448 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 18:02:27,449 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:02:27,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497994290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:02:27,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:02:27,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-09 18:02:27,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020180583] [2024-11-09 18:02:27,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:02:27,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:02:27,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:02:27,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:02:27,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:02:27,452 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 18:02:27,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:02:27,469 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2024-11-09 18:02:27,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:02:27,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 48 [2024-11-09 18:02:27,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:02:27,471 INFO L225 Difference]: With dead ends: 49 [2024-11-09 18:02:27,471 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 18:02:27,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:02:27,472 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:02:27,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:02:27,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 18:02:27,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-09 18:02:27,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:02:27,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2024-11-09 18:02:27,485 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 48 [2024-11-09 18:02:27,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:02:27,487 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2024-11-09 18:02:27,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 18:02:27,488 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2024-11-09 18:02:27,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 18:02:27,490 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:02:27,491 INFO L215 NwaCegarLoop]: trace histogram [6, 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] [2024-11-09 18:02:27,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 18:02:27,692 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 [2024-11-09 18:02:27,692 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:02:27,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:02:27,693 INFO L85 PathProgramCache]: Analyzing trace with hash -51485427, now seen corresponding path program 1 times [2024-11-09 18:02:27,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:02:27,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085039279] [2024-11-09 18:02:27,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:27,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:02:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:27,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:02:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:27,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-09 18:02:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:27,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 18:02:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:27,805 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 18:02:27,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:02:27,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085039279] [2024-11-09 18:02:27,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085039279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:02:27,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729886753] [2024-11-09 18:02:27,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:27,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:27,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:02:27,808 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) [2024-11-09 18:02:27,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 18:02:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:27,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:02:27,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:02:27,913 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-09 18:02:27,914 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:02:27,957 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-09 18:02:27,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729886753] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:02:27,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:02:27,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2024-11-09 18:02:27,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317310693] [2024-11-09 18:02:27,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:02:27,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 18:02:27,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:02:27,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 18:02:27,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:02:27,959 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 18:02:28,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:02:28,014 INFO L93 Difference]: Finished difference Result 69 states and 88 transitions. [2024-11-09 18:02:28,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 18:02:28,015 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 50 [2024-11-09 18:02:28,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:02:28,016 INFO L225 Difference]: With dead ends: 69 [2024-11-09 18:02:28,016 INFO L226 Difference]: Without dead ends: 43 [2024-11-09 18:02:28,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:02:28,018 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:02:28,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 103 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:02:28,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-09 18:02:28,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2024-11-09 18:02:28,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:02:28,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2024-11-09 18:02:28,028 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 50 [2024-11-09 18:02:28,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:02:28,028 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2024-11-09 18:02:28,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 18:02:28,028 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2024-11-09 18:02:28,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 18:02:28,031 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:02:28,031 INFO L215 NwaCegarLoop]: trace histogram [9, 6, 6, 6, 5, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:02:28,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 18:02:28,232 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 [2024-11-09 18:02:28,232 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:02:28,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:02:28,233 INFO L85 PathProgramCache]: Analyzing trace with hash -408317715, now seen corresponding path program 2 times [2024-11-09 18:02:28,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:02:28,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458243495] [2024-11-09 18:02:28,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:28,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:02:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:28,283 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 18:02:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:28,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-09 18:02:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:28,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-09 18:02:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:28,332 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-09 18:02:28,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:02:28,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458243495] [2024-11-09 18:02:28,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458243495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:02:28,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046755193] [2024-11-09 18:02:28,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:02:28,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:28,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:02:28,336 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) [2024-11-09 18:02:28,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 18:02:28,430 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:02:28,430 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:02:28,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 18:02:28,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:02:28,499 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-09 18:02:28,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:02:28,594 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-09 18:02:28,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046755193] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:02:28,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:02:28,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-09 18:02:28,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649589974] [2024-11-09 18:02:28,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:02:28,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 18:02:28,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:02:28,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 18:02:28,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-09 18:02:28,597 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 18:02:28,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:02:28,646 INFO L93 Difference]: Finished difference Result 89 states and 111 transitions. [2024-11-09 18:02:28,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 18:02:28,646 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2024-11-09 18:02:28,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:02:28,647 INFO L225 Difference]: With dead ends: 89 [2024-11-09 18:02:28,647 INFO L226 Difference]: Without dead ends: 59 [2024-11-09 18:02:28,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-09 18:02:28,649 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:02:28,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 150 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:02:28,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-09 18:02:28,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2024-11-09 18:02:28,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:02:28,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2024-11-09 18:02:28,655 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 68 [2024-11-09 18:02:28,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:02:28,656 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2024-11-09 18:02:28,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 18:02:28,656 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2024-11-09 18:02:28,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-09 18:02:28,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:02:28,661 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 10, 9, 9, 6, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:02:28,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 18:02:28,862 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 [2024-11-09 18:02:28,862 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:02:28,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:02:28,863 INFO L85 PathProgramCache]: Analyzing trace with hash 221063529, now seen corresponding path program 1 times [2024-11-09 18:02:28,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:02:28,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915848987] [2024-11-09 18:02:28,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:28,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:02:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:28,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-09 18:02:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:28,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-09 18:02:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:28,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-09 18:02:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:29,012 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 77 proven. 61 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-09 18:02:29,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:02:29,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915848987] [2024-11-09 18:02:29,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915848987] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:02:29,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509416525] [2024-11-09 18:02:29,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:29,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:29,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:02:29,015 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) [2024-11-09 18:02:29,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 18:02:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:29,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 18:02:29,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:02:29,288 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2024-11-09 18:02:29,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:02:29,574 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2024-11-09 18:02:29,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509416525] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:02:29,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:02:29,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13, 13] total 26 [2024-11-09 18:02:29,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995894086] [2024-11-09 18:02:29,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:02:29,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 18:02:29,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:02:29,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 18:02:29,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650 [2024-11-09 18:02:29,579 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand has 26 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 26 states have internal predecessors, (90), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 18:02:29,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:02:29,631 INFO L93 Difference]: Finished difference Result 118 states and 145 transitions. [2024-11-09 18:02:29,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 18:02:29,632 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 26 states have internal predecessors, (90), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 92 [2024-11-09 18:02:29,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:02:29,633 INFO L225 Difference]: With dead ends: 118 [2024-11-09 18:02:29,633 INFO L226 Difference]: Without dead ends: 85 [2024-11-09 18:02:29,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650 [2024-11-09 18:02:29,634 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:02:29,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 132 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:02:29,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-09 18:02:29,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2024-11-09 18:02:29,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 76 states have (on average 1.0526315789473684) internal successors, (80), 76 states have internal predecessors, (80), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:02:29,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2024-11-09 18:02:29,642 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 92 [2024-11-09 18:02:29,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:02:29,642 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2024-11-09 18:02:29,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 26 states have internal predecessors, (90), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 18:02:29,642 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2024-11-09 18:02:29,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-09 18:02:29,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:02:29,644 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 12, 9, 9, 6, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:02:29,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 18:02:29,844 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 [2024-11-09 18:02:29,845 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:02:29,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:02:29,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1376300740, now seen corresponding path program 1 times [2024-11-09 18:02:29,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:02:29,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702164026] [2024-11-09 18:02:29,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:29,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:02:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:29,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-09 18:02:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:29,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-09 18:02:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:30,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-09 18:02:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:30,014 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-09 18:02:30,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:02:30,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702164026] [2024-11-09 18:02:30,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702164026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:02:30,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070293678] [2024-11-09 18:02:30,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:30,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:30,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:02:30,017 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) [2024-11-09 18:02:30,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 18:02:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:30,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 18:02:30,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:02:30,564 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2024-11-09 18:02:30,564 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:02:31,319 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2024-11-09 18:02:31,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070293678] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:02:31,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:02:31,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 25, 25] total 44 [2024-11-09 18:02:31,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921871630] [2024-11-09 18:02:31,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:02:31,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-09 18:02:31,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:02:31,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-09 18:02:31,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=866, Invalid=1026, Unknown=0, NotChecked=0, Total=1892 [2024-11-09 18:02:31,324 INFO L87 Difference]: Start difference. First operand 81 states and 86 transitions. Second operand has 44 states, 44 states have (on average 2.7954545454545454) internal successors, (123), 44 states have internal predecessors, (123), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 18:02:31,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:02:31,417 INFO L93 Difference]: Finished difference Result 152 states and 180 transitions. [2024-11-09 18:02:31,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-09 18:02:31,419 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.7954545454545454) internal successors, (123), 44 states have internal predecessors, (123), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 116 [2024-11-09 18:02:31,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:02:31,420 INFO L225 Difference]: With dead ends: 152 [2024-11-09 18:02:31,420 INFO L226 Difference]: Without dead ends: 119 [2024-11-09 18:02:31,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 192 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=866, Invalid=1026, Unknown=0, NotChecked=0, Total=1892 [2024-11-09 18:02:31,425 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:02:31,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 189 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:02:31,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-09 18:02:31,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2024-11-09 18:02:31,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 114 states have (on average 1.0350877192982457) internal successors, (118), 114 states have internal predecessors, (118), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:02:31,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 124 transitions. [2024-11-09 18:02:31,444 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 124 transitions. Word has length 116 [2024-11-09 18:02:31,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:02:31,445 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 124 transitions. [2024-11-09 18:02:31,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.7954545454545454) internal successors, (123), 44 states have internal predecessors, (123), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 18:02:31,445 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 124 transitions. [2024-11-09 18:02:31,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-09 18:02:31,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:02:31,451 INFO L215 NwaCegarLoop]: trace histogram [41, 40, 12, 9, 9, 6, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:02:31,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 18:02:31,652 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 [2024-11-09 18:02:31,652 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:02:31,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:02:31,653 INFO L85 PathProgramCache]: Analyzing trace with hash 734771371, now seen corresponding path program 2 times [2024-11-09 18:02:31,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:02:31,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879973180] [2024-11-09 18:02:31,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:31,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:02:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:31,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 18:02:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:31,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-09 18:02:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:31,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-11-09 18:02:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:31,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1862 backedges. 8 proven. 116 refuted. 0 times theorem prover too weak. 1738 trivial. 0 not checked. [2024-11-09 18:02:31,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:02:31,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879973180] [2024-11-09 18:02:31,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879973180] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:02:31,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397861614] [2024-11-09 18:02:31,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:02:31,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:31,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:02:31,922 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) [2024-11-09 18:02:31,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 18:02:32,100 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:02:32,100 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:02:32,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:02:32,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:02:32,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1862 backedges. 88 proven. 10 refuted. 0 times theorem prover too weak. 1764 trivial. 0 not checked. [2024-11-09 18:02:32,134 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:02:32,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1862 backedges. 8 proven. 116 refuted. 0 times theorem prover too weak. 1738 trivial. 0 not checked. [2024-11-09 18:02:32,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397861614] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:02:32,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:02:32,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-09 18:02:32,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205010464] [2024-11-09 18:02:32,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:02:32,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 18:02:32,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:02:32,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 18:02:32,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-09 18:02:32,183 INFO L87 Difference]: Start difference. First operand 119 states and 124 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 18:02:32,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:02:32,214 INFO L93 Difference]: Finished difference Result 168 states and 183 transitions. [2024-11-09 18:02:32,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 18:02:32,215 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 154 [2024-11-09 18:02:32,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:02:32,216 INFO L225 Difference]: With dead ends: 168 [2024-11-09 18:02:32,216 INFO L226 Difference]: Without dead ends: 135 [2024-11-09 18:02:32,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-09 18:02:32,217 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:02:32,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 56 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:02:32,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-09 18:02:32,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2024-11-09 18:02:32,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 130 states have (on average 1.0307692307692307) internal successors, (134), 130 states have internal predecessors, (134), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:02:32,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 140 transitions. [2024-11-09 18:02:32,230 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 140 transitions. Word has length 154 [2024-11-09 18:02:32,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:02:32,232 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 140 transitions. [2024-11-09 18:02:32,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 18:02:32,233 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 140 transitions. [2024-11-09 18:02:32,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-09 18:02:32,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:02:32,237 INFO L215 NwaCegarLoop]: trace histogram [41, 40, 24, 21, 21, 18, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:02:32,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 18:02:32,438 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 [2024-11-09 18:02:32,438 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:02:32,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:02:32,439 INFO L85 PathProgramCache]: Analyzing trace with hash -384401609, now seen corresponding path program 3 times [2024-11-09 18:02:32,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:02:32,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765262541] [2024-11-09 18:02:32,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:32,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:02:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:32,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 18:02:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:32,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-11-09 18:02:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:32,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-11-09 18:02:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:32,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2630 backedges. 20 proven. 536 refuted. 0 times theorem prover too weak. 2074 trivial. 0 not checked. [2024-11-09 18:02:32,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:02:32,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765262541] [2024-11-09 18:02:32,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765262541] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:02:32,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336980788] [2024-11-09 18:02:32,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:02:32,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:32,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:02:32,821 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) [2024-11-09 18:02:32,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 18:02:32,957 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 18:02:32,957 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:02:32,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:02:32,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:02:33,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2630 backedges. 152 proven. 3 refuted. 0 times theorem prover too weak. 2475 trivial. 0 not checked. [2024-11-09 18:02:33,000 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:02:33,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2630 backedges. 152 proven. 3 refuted. 0 times theorem prover too weak. 2475 trivial. 0 not checked. [2024-11-09 18:02:33,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336980788] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:02:33,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:02:33,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 15 [2024-11-09 18:02:33,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614186221] [2024-11-09 18:02:33,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:02:33,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 18:02:33,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:02:33,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 18:02:33,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-11-09 18:02:33,065 INFO L87 Difference]: Start difference. First operand 135 states and 140 transitions. Second operand has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 18:02:33,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:02:33,126 INFO L93 Difference]: Finished difference Result 208 states and 229 transitions. [2024-11-09 18:02:33,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 18:02:33,127 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 202 [2024-11-09 18:02:33,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:02:33,129 INFO L225 Difference]: With dead ends: 208 [2024-11-09 18:02:33,129 INFO L226 Difference]: Without dead ends: 159 [2024-11-09 18:02:33,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-11-09 18:02:33,130 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 12 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:02:33,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 154 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:02:33,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-09 18:02:33,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2024-11-09 18:02:33,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 154 states have (on average 1.051948051948052) internal successors, (162), 154 states have internal predecessors, (162), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:02:33,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 168 transitions. [2024-11-09 18:02:33,153 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 168 transitions. Word has length 202 [2024-11-09 18:02:33,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:02:33,153 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 168 transitions. [2024-11-09 18:02:33,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 18:02:33,156 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 168 transitions. [2024-11-09 18:02:33,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-11-09 18:02:33,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:02:33,159 INFO L215 NwaCegarLoop]: trace histogram [42, 41, 40, 39, 39, 24, 15, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:02:33,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 18:02:33,360 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 [2024-11-09 18:02:33,360 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:02:33,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:02:33,360 INFO L85 PathProgramCache]: Analyzing trace with hash -380741499, now seen corresponding path program 4 times [2024-11-09 18:02:33,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:02:33,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853421895] [2024-11-09 18:02:33,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:33,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:02:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:33,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 18:02:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:33,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-11-09 18:02:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:33,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-11-09 18:02:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:33,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4862 backedges. 166 proven. 1602 refuted. 0 times theorem prover too weak. 3094 trivial. 0 not checked. [2024-11-09 18:02:33,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:02:33,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853421895] [2024-11-09 18:02:33,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853421895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:02:33,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510985100] [2024-11-09 18:02:33,827 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:02:33,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:33,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:02:33,828 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) [2024-11-09 18:02:33,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 18:02:34,044 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:02:34,045 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:02:34,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 18:02:34,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:02:34,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4862 backedges. 1584 proven. 210 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2024-11-09 18:02:34,138 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:02:34,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4862 backedges. 1584 proven. 210 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2024-11-09 18:02:34,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510985100] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:02:34,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:02:34,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 23 [2024-11-09 18:02:34,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357345498] [2024-11-09 18:02:34,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:02:34,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 18:02:34,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:02:34,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 18:02:34,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-11-09 18:02:34,380 INFO L87 Difference]: Start difference. First operand 159 states and 168 transitions. Second operand has 23 states, 23 states have (on average 5.391304347826087) internal successors, (124), 23 states have internal predecessors, (124), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 18:02:34,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:02:34,462 INFO L93 Difference]: Finished difference Result 284 states and 316 transitions. [2024-11-09 18:02:34,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 18:02:34,463 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.391304347826087) internal successors, (124), 23 states have internal predecessors, (124), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 274 [2024-11-09 18:02:34,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:02:34,464 INFO L225 Difference]: With dead ends: 284 [2024-11-09 18:02:34,464 INFO L226 Difference]: Without dead ends: 211 [2024-11-09 18:02:34,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 541 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-11-09 18:02:34,466 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 9 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:02:34,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 94 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:02:34,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-09 18:02:34,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2024-11-09 18:02:34,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 206 states have (on average 1.0388349514563107) internal successors, (214), 206 states have internal predecessors, (214), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:02:34,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 220 transitions. [2024-11-09 18:02:34,477 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 220 transitions. Word has length 274 [2024-11-09 18:02:34,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:02:34,477 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 220 transitions. [2024-11-09 18:02:34,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.391304347826087) internal successors, (124), 23 states have internal predecessors, (124), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 18:02:34,478 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 220 transitions. [2024-11-09 18:02:34,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2024-11-09 18:02:34,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:02:34,485 INFO L215 NwaCegarLoop]: trace histogram [81, 78, 78, 63, 41, 40, 15, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:02:34,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 18:02:34,685 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 [2024-11-09 18:02:34,685 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:02:34,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:02:34,686 INFO L85 PathProgramCache]: Analyzing trace with hash -738757492, now seen corresponding path program 5 times [2024-11-09 18:02:34,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:02:34,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528061200] [2024-11-09 18:02:34,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:34,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:02:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:35,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 18:02:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:35,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-11-09 18:02:35,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:35,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-11-09 18:02:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 14144 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 14138 trivial. 0 not checked. [2024-11-09 18:02:35,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:02:35,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528061200] [2024-11-09 18:02:35,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528061200] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:02:35,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883703738] [2024-11-09 18:02:35,075 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:02:35,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:35,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:02:35,077 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) [2024-11-09 18:02:35,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 18:02:35,257 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-11-09 18:02:35,258 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:02:35,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 18:02:35,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:02:35,500 INFO L134 CoverageAnalysis]: Checked inductivity of 14144 backedges. 6323 proven. 351 refuted. 0 times theorem prover too weak. 7470 trivial. 0 not checked. [2024-11-09 18:02:35,501 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:02:35,791 INFO L134 CoverageAnalysis]: Checked inductivity of 14144 backedges. 701 proven. 3273 refuted. 0 times theorem prover too weak. 10170 trivial. 0 not checked. [2024-11-09 18:02:35,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883703738] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:02:35,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:02:35,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 17, 17] total 25 [2024-11-09 18:02:35,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037716767] [2024-11-09 18:02:35,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:02:35,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 18:02:35,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:02:35,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 18:02:35,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=360, Unknown=0, NotChecked=0, Total=600 [2024-11-09 18:02:35,795 INFO L87 Difference]: Start difference. First operand 211 states and 220 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 18:02:35,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:02:35,906 INFO L93 Difference]: Finished difference Result 394 states and 442 transitions. [2024-11-09 18:02:35,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 18:02:35,907 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 430 [2024-11-09 18:02:35,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:02:35,908 INFO L225 Difference]: With dead ends: 394 [2024-11-09 18:02:35,908 INFO L226 Difference]: Without dead ends: 269 [2024-11-09 18:02:35,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 869 GetRequests, 836 SyntacticMatches, 10 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=240, Invalid=360, Unknown=0, NotChecked=0, Total=600 [2024-11-09 18:02:35,910 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:02:35,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 156 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:02:35,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-11-09 18:02:35,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2024-11-09 18:02:35,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 264 states have (on average 1.0833333333333333) internal successors, (286), 264 states have internal predecessors, (286), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:02:35,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 292 transitions. [2024-11-09 18:02:35,927 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 292 transitions. Word has length 430 [2024-11-09 18:02:35,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:02:35,927 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 292 transitions. [2024-11-09 18:02:35,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 18:02:35,927 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 292 transitions. [2024-11-09 18:02:35,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2024-11-09 18:02:35,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:02:35,938 INFO L215 NwaCegarLoop]: trace histogram [123, 120, 120, 63, 57, 41, 40, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:02:35,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 18:02:36,139 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 [2024-11-09 18:02:36,140 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:02:36,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:02:36,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1987527465, now seen corresponding path program 6 times [2024-11-09 18:02:36,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:02:36,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617078090] [2024-11-09 18:02:36,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:36,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:02:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:36,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 18:02:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:36,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-11-09 18:02:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:36,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2024-11-09 18:02:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:36,614 INFO L134 CoverageAnalysis]: Checked inductivity of 30950 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30938 trivial. 0 not checked. [2024-11-09 18:02:36,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:02:36,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617078090] [2024-11-09 18:02:36,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617078090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:02:36,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562985361] [2024-11-09 18:02:36,615 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:02:36,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:36,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:02:36,618 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) [2024-11-09 18:02:36,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 18:02:36,854 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-09 18:02:36,854 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:02:36,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 18:02:36,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:02:36,931 INFO L134 CoverageAnalysis]: Checked inductivity of 30950 backedges. 13212 proven. 12 refuted. 0 times theorem prover too weak. 17726 trivial. 0 not checked. [2024-11-09 18:02:36,931 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:02:37,033 INFO L134 CoverageAnalysis]: Checked inductivity of 30950 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30938 trivial. 0 not checked. [2024-11-09 18:02:37,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562985361] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:02:37,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:02:37,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 12 [2024-11-09 18:02:37,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033839825] [2024-11-09 18:02:37,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:02:37,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 18:02:37,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:02:37,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 18:02:37,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-09 18:02:37,036 INFO L87 Difference]: Start difference. First operand 269 states and 292 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 18:02:37,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:02:37,067 INFO L93 Difference]: Finished difference Result 451 states and 498 transitions. [2024-11-09 18:02:37,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 18:02:37,068 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 600 [2024-11-09 18:02:37,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:02:37,070 INFO L225 Difference]: With dead ends: 451 [2024-11-09 18:02:37,070 INFO L226 Difference]: Without dead ends: 279 [2024-11-09 18:02:37,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1210 GetRequests, 1200 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-09 18:02:37,072 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:02:37,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:02:37,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-09 18:02:37,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2024-11-09 18:02:37,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 274 states have (on average 1.0802919708029197) internal successors, (296), 274 states have internal predecessors, (296), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:02:37,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 302 transitions. [2024-11-09 18:02:37,082 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 302 transitions. Word has length 600 [2024-11-09 18:02:37,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:02:37,082 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 302 transitions. [2024-11-09 18:02:37,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 18:02:37,083 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 302 transitions. [2024-11-09 18:02:37,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2024-11-09 18:02:37,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:02:37,086 INFO L215 NwaCegarLoop]: trace histogram [123, 120, 120, 63, 57, 41, 40, 9, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:02:37,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 18:02:37,290 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,SelfDestructingSolverStorable12 [2024-11-09 18:02:37,291 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:02:37,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:02:37,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1490959250, now seen corresponding path program 7 times [2024-11-09 18:02:37,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:02:37,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358233218] [2024-11-09 18:02:37,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:37,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:02:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:37,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 18:02:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:37,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-11-09 18:02:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:37,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2024-11-09 18:02:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:37,925 INFO L134 CoverageAnalysis]: Checked inductivity of 31010 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 30938 trivial. 0 not checked. [2024-11-09 18:02:37,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:02:37,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358233218] [2024-11-09 18:02:37,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358233218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:02:37,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051850154] [2024-11-09 18:02:37,926 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 18:02:37,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:37,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:02:37,928 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) [2024-11-09 18:02:37,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 18:02:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:38,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 18:02:38,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:02:38,372 INFO L134 CoverageAnalysis]: Checked inductivity of 31010 backedges. 13132 proven. 72 refuted. 0 times theorem prover too weak. 17806 trivial. 0 not checked. [2024-11-09 18:02:38,372 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:02:38,540 INFO L134 CoverageAnalysis]: Checked inductivity of 31010 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 30938 trivial. 0 not checked. [2024-11-09 18:02:38,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051850154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:02:38,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:02:38,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2024-11-09 18:02:38,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384544504] [2024-11-09 18:02:38,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:02:38,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 18:02:38,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:02:38,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 18:02:38,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2024-11-09 18:02:38,543 INFO L87 Difference]: Start difference. First operand 279 states and 302 transitions. Second operand has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 21 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 18:02:38,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:02:38,579 INFO L93 Difference]: Finished difference Result 471 states and 523 transitions. [2024-11-09 18:02:38,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 18:02:38,580 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 21 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 610 [2024-11-09 18:02:38,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:02:38,582 INFO L225 Difference]: With dead ends: 471 [2024-11-09 18:02:38,582 INFO L226 Difference]: Without dead ends: 299 [2024-11-09 18:02:38,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1235 GetRequests, 1216 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2024-11-09 18:02:38,583 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:02:38,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 168 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:02:38,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-09 18:02:38,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2024-11-09 18:02:38,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 294 states have (on average 1.0748299319727892) internal successors, (316), 294 states have internal predecessors, (316), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:02:38,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 322 transitions. [2024-11-09 18:02:38,593 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 322 transitions. Word has length 610 [2024-11-09 18:02:38,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:02:38,594 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 322 transitions. [2024-11-09 18:02:38,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 21 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 18:02:38,594 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 322 transitions. [2024-11-09 18:02:38,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2024-11-09 18:02:38,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:02:38,598 INFO L215 NwaCegarLoop]: trace histogram [123, 120, 120, 63, 57, 41, 40, 19, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:02:38,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 18:02:38,802 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,SelfDestructingSolverStorable13 [2024-11-09 18:02:38,803 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:02:38,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:02:38,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1684185032, now seen corresponding path program 8 times [2024-11-09 18:02:38,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:02:38,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689680709] [2024-11-09 18:02:38,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:38,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:02:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:39,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 18:02:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:39,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-11-09 18:02:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:39,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2024-11-09 18:02:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:39,864 INFO L134 CoverageAnalysis]: Checked inductivity of 31280 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 30938 trivial. 0 not checked. [2024-11-09 18:02:39,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:02:39,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689680709] [2024-11-09 18:02:39,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689680709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:02:39,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622569310] [2024-11-09 18:02:39,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:02:39,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:39,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:02:39,867 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) [2024-11-09 18:02:39,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 18:02:40,251 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:02:40,251 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:02:40,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 1518 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 18:02:40,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:02:40,333 INFO L134 CoverageAnalysis]: Checked inductivity of 31280 backedges. 13132 proven. 342 refuted. 0 times theorem prover too weak. 17806 trivial. 0 not checked. [2024-11-09 18:02:40,333 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:02:40,896 INFO L134 CoverageAnalysis]: Checked inductivity of 31280 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 30938 trivial. 0 not checked. [2024-11-09 18:02:40,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622569310] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:02:40,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:02:40,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 41 [2024-11-09 18:02:40,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670092589] [2024-11-09 18:02:40,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:02:40,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-09 18:02:40,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:02:40,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-09 18:02:40,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2024-11-09 18:02:40,901 INFO L87 Difference]: Start difference. First operand 299 states and 322 transitions. Second operand has 41 states, 41 states have (on average 2.682926829268293) internal successors, (110), 41 states have internal predecessors, (110), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 18:02:40,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:02:40,955 INFO L93 Difference]: Finished difference Result 511 states and 573 transitions. [2024-11-09 18:02:40,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-09 18:02:40,956 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.682926829268293) internal successors, (110), 41 states have internal predecessors, (110), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 630 [2024-11-09 18:02:40,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:02:40,958 INFO L225 Difference]: With dead ends: 511 [2024-11-09 18:02:40,958 INFO L226 Difference]: Without dead ends: 339 [2024-11-09 18:02:40,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1285 GetRequests, 1246 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2024-11-09 18:02:40,961 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:02:40,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 187 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:02:40,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-11-09 18:02:40,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2024-11-09 18:02:40,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 334 states have (on average 1.0658682634730539) internal successors, (356), 334 states have internal predecessors, (356), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:02:40,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 362 transitions. [2024-11-09 18:02:40,972 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 362 transitions. Word has length 630 [2024-11-09 18:02:40,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:02:40,973 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 362 transitions. [2024-11-09 18:02:40,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.682926829268293) internal successors, (110), 41 states have internal predecessors, (110), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 18:02:40,973 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 362 transitions. [2024-11-09 18:02:40,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 671 [2024-11-09 18:02:40,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:02:40,978 INFO L215 NwaCegarLoop]: trace histogram [123, 120, 120, 63, 57, 41, 40, 39, 38, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:02:40,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 18:02:41,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:41,183 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:02:41,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:02:41,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1613382452, now seen corresponding path program 9 times [2024-11-09 18:02:41,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:02:41,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118112276] [2024-11-09 18:02:41,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:41,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:02:41,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:43,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 18:02:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:43,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-11-09 18:02:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:43,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2024-11-09 18:02:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:43,472 INFO L134 CoverageAnalysis]: Checked inductivity of 32420 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 30938 trivial. 0 not checked. [2024-11-09 18:02:43,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:02:43,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118112276] [2024-11-09 18:02:43,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118112276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:02:43,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967131326] [2024-11-09 18:02:43,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:02:43,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:43,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:02:43,475 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) [2024-11-09 18:02:43,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process