./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-multidimensional/copy-partial-2-n-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-multidimensional/copy-partial-2-n-u.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2a46b64c20324a7544dfe7936b5f39eaa32bba659068797748195a7f292bdaee --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:42:11,858 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:42:11,906 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:42:11,912 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:42:11,913 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:42:11,935 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:42:11,936 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:42:11,937 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:42:11,937 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:42:11,940 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:42:11,940 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:42:11,940 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:42:11,941 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:42:11,941 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:42:11,942 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:42:11,943 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:42:11,943 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:42:11,943 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:42:11,943 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:42:11,943 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:42:11,943 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:42:11,945 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:42:11,945 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:42:11,945 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:42:11,945 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:42:11,945 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:42:11,946 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:42:11,946 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:42:11,946 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:42:11,946 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:42:11,946 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:42:11,947 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:42:11,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:42:11,947 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:42:11,947 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:42:11,947 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:42:11,947 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:42:11,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:42:11,948 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:42:11,948 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:42:11,948 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:42:11,948 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:42:11,949 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a46b64c20324a7544dfe7936b5f39eaa32bba659068797748195a7f292bdaee [2024-11-16 02:42:12,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:42:12,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:42:12,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:42:12,163 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:42:12,163 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:42:12,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-multidimensional/copy-partial-2-n-u.c [2024-11-16 02:42:13,352 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:42:13,520 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:42:13,521 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/copy-partial-2-n-u.c [2024-11-16 02:42:13,533 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fbed7c00/4d52f1b1ebf54cda833df49a17974edb/FLAG101426dde [2024-11-16 02:42:13,940 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fbed7c00/4d52f1b1ebf54cda833df49a17974edb [2024-11-16 02:42:13,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:42:13,945 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:42:13,946 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:42:13,946 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:42:13,953 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:42:13,954 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:42:13" (1/1) ... [2024-11-16 02:42:13,955 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@627bbaa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:13, skipping insertion in model container [2024-11-16 02:42:13,955 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:42:13" (1/1) ... [2024-11-16 02:42:13,973 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:42:14,115 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/array-multidimensional/copy-partial-2-n-u.c[416,429] [2024-11-16 02:42:14,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:42:14,143 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:42:14,153 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/array-multidimensional/copy-partial-2-n-u.c[416,429] [2024-11-16 02:42:14,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:42:14,178 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:42:14,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14 WrapperNode [2024-11-16 02:42:14,178 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:42:14,179 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:42:14,179 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:42:14,180 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:42:14,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14" (1/1) ... [2024-11-16 02:42:14,189 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14" (1/1) ... [2024-11-16 02:42:14,206 INFO L138 Inliner]: procedures = 15, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2024-11-16 02:42:14,206 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:42:14,208 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:42:14,208 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:42:14,208 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:42:14,215 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14" (1/1) ... [2024-11-16 02:42:14,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14" (1/1) ... [2024-11-16 02:42:14,217 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14" (1/1) ... [2024-11-16 02:42:14,225 INFO L175 MemorySlicer]: Split 7 memory accesses to 3 slices as follows [2, 3, 2]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-11-16 02:42:14,226 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14" (1/1) ... [2024-11-16 02:42:14,226 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14" (1/1) ... [2024-11-16 02:42:14,230 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14" (1/1) ... [2024-11-16 02:42:14,230 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14" (1/1) ... [2024-11-16 02:42:14,236 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14" (1/1) ... [2024-11-16 02:42:14,240 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14" (1/1) ... [2024-11-16 02:42:14,243 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:42:14,244 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:42:14,244 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:42:14,244 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:42:14,245 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14" (1/1) ... [2024-11-16 02:42:14,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:42:14,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:42:14,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 02:42:14,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 02:42:14,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:42:14,302 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-16 02:42:14,303 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-16 02:42:14,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:42:14,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:42:14,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 02:42:14,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:42:14,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:42:14,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:42:14,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 02:42:14,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:42:14,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:42:14,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:42:14,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:42:14,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 02:42:14,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:42:14,372 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:42:14,376 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:42:14,510 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L22: call ULTIMATE.dealloc(main_~#A~0#1.base, main_~#A~0#1.offset);havoc main_~#A~0#1.base, main_~#A~0#1.offset;call ULTIMATE.dealloc(main_~#B~0#1.base, main_~#B~0#1.offset);havoc main_~#B~0#1.base, main_~#B~0#1.offset; [2024-11-16 02:42:14,524 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-16 02:42:14,524 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:42:14,537 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:42:14,537 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:42:14,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:42:14 BoogieIcfgContainer [2024-11-16 02:42:14,538 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:42:14,541 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:42:14,541 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:42:14,544 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:42:14,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:42:13" (1/3) ... [2024-11-16 02:42:14,545 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67baf4f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:42:14, skipping insertion in model container [2024-11-16 02:42:14,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:42:14" (2/3) ... [2024-11-16 02:42:14,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67baf4f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:42:14, skipping insertion in model container [2024-11-16 02:42:14,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:42:14" (3/3) ... [2024-11-16 02:42:14,547 INFO L112 eAbstractionObserver]: Analyzing ICFG copy-partial-2-n-u.c [2024-11-16 02:42:14,578 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:42:14,578 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:42:14,647 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:42:14,653 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;@64e25486, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:42:14,654 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:42:14,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 32 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:42:14,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-16 02:42:14,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:42:14,664 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:42:14,664 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:42:14,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:42:14,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1505498157, now seen corresponding path program 1 times [2024-11-16 02:42:14,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:42:14,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088894483] [2024-11-16 02:42:14,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:14,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:42:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:14,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:42:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:14,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-16 02:42:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:14,847 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 02:42:14,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:42:14,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088894483] [2024-11-16 02:42:14,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088894483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:42:14,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:42:14,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:42:14,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457958628] [2024-11-16 02:42:14,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:42:14,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:42:14,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:42:14,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:42:14,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:42:14,874 INFO L87 Difference]: Start difference. First operand has 36 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 32 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:42:14,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:42:14,890 INFO L93 Difference]: Finished difference Result 68 states and 97 transitions. [2024-11-16 02:42:14,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:42:14,893 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-11-16 02:42:14,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:42:14,898 INFO L225 Difference]: With dead ends: 68 [2024-11-16 02:42:14,900 INFO L226 Difference]: Without dead ends: 31 [2024-11-16 02:42:14,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:42:14,906 INFO L432 NwaCegarLoop]: 41 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, 41 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:42:14,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:42:14,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-16 02:42:14,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-16 02:42:14,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:42:14,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2024-11-16 02:42:14,938 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 24 [2024-11-16 02:42:14,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:42:14,939 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2024-11-16 02:42:14,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:42:14,940 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2024-11-16 02:42:14,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-16 02:42:14,942 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:42:14,942 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:42:14,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:42:14,942 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:42:14,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:42:14,943 INFO L85 PathProgramCache]: Analyzing trace with hash -271109375, now seen corresponding path program 1 times [2024-11-16 02:42:14,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:42:14,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580286472] [2024-11-16 02:42:14,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:14,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:42:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:15,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:42:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:15,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-16 02:42:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:15,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 02:42:15,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:42:15,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580286472] [2024-11-16 02:42:15,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580286472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:42:15,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:42:15,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:42:15,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711558623] [2024-11-16 02:42:15,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:42:15,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:42:15,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:42:15,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:42:15,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:42:15,146 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 02:42:15,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:42:15,170 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2024-11-16 02:42:15,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:42:15,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2024-11-16 02:42:15,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:42:15,171 INFO L225 Difference]: With dead ends: 53 [2024-11-16 02:42:15,171 INFO L226 Difference]: Without dead ends: 36 [2024-11-16 02:42:15,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:42:15,172 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 15 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:42:15,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 62 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:42:15,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-16 02:42:15,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2024-11-16 02:42:15,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:42:15,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2024-11-16 02:42:15,179 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 26 [2024-11-16 02:42:15,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:42:15,180 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2024-11-16 02:42:15,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 02:42:15,180 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2024-11-16 02:42:15,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-16 02:42:15,181 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:42:15,181 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:42:15,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 02:42:15,181 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:42:15,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:42:15,181 INFO L85 PathProgramCache]: Analyzing trace with hash 862341675, now seen corresponding path program 1 times [2024-11-16 02:42:15,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:42:15,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226834210] [2024-11-16 02:42:15,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:15,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:42:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:15,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:42:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:15,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-16 02:42:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:15,310 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 02:42:15,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:42:15,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226834210] [2024-11-16 02:42:15,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226834210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:42:15,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:42:15,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:42:15,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319866395] [2024-11-16 02:42:15,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:42:15,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:42:15,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:42:15,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:42:15,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:42:15,312 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 02:42:15,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:42:15,354 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2024-11-16 02:42:15,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:42:15,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2024-11-16 02:42:15,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:42:15,356 INFO L225 Difference]: With dead ends: 66 [2024-11-16 02:42:15,357 INFO L226 Difference]: Without dead ends: 44 [2024-11-16 02:42:15,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:42:15,358 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 35 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:42:15,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 60 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:42:15,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-16 02:42:15,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2024-11-16 02:42:15,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:42:15,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2024-11-16 02:42:15,365 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 31 [2024-11-16 02:42:15,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:42:15,365 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2024-11-16 02:42:15,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 02:42:15,366 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2024-11-16 02:42:15,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-16 02:42:15,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:42:15,367 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:42:15,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 02:42:15,367 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:42:15,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:42:15,368 INFO L85 PathProgramCache]: Analyzing trace with hash -2118010038, now seen corresponding path program 1 times [2024-11-16 02:42:15,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:42:15,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80272357] [2024-11-16 02:42:15,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:15,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:42:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:15,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:42:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:15,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-16 02:42:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:15,480 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 02:42:15,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:42:15,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80272357] [2024-11-16 02:42:15,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80272357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:42:15,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:42:15,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:42:15,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466362131] [2024-11-16 02:42:15,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:42:15,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:42:15,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:42:15,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:42:15,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:42:15,483 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 02:42:15,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:42:15,519 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2024-11-16 02:42:15,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:42:15,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2024-11-16 02:42:15,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:42:15,520 INFO L225 Difference]: With dead ends: 66 [2024-11-16 02:42:15,520 INFO L226 Difference]: Without dead ends: 55 [2024-11-16 02:42:15,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:42:15,521 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 39 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:42:15,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 53 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:42:15,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-16 02:42:15,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 37. [2024-11-16 02:42:15,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:42:15,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-11-16 02:42:15,531 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 33 [2024-11-16 02:42:15,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:42:15,532 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-11-16 02:42:15,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 02:42:15,532 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-11-16 02:42:15,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-16 02:42:15,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:42:15,534 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:42:15,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 02:42:15,534 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:42:15,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:42:15,535 INFO L85 PathProgramCache]: Analyzing trace with hash -735519432, now seen corresponding path program 1 times [2024-11-16 02:42:15,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:42:15,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13015925] [2024-11-16 02:42:15,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:15,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:42:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:15,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:42:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:15,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-16 02:42:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:15,632 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 02:42:15,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:42:15,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13015925] [2024-11-16 02:42:15,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13015925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:42:15,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:42:15,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:42:15,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687671800] [2024-11-16 02:42:15,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:42:15,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:42:15,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:42:15,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:42:15,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:42:15,637 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 02:42:15,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:42:15,674 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2024-11-16 02:42:15,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:42:15,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 38 [2024-11-16 02:42:15,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:42:15,676 INFO L225 Difference]: With dead ends: 62 [2024-11-16 02:42:15,677 INFO L226 Difference]: Without dead ends: 46 [2024-11-16 02:42:15,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:42:15,678 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 25 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:42:15,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 61 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:42:15,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-16 02:42:15,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2024-11-16 02:42:15,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.162162162162162) internal successors, (43), 37 states have internal predecessors, (43), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:42:15,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2024-11-16 02:42:15,689 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 38 [2024-11-16 02:42:15,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:42:15,690 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2024-11-16 02:42:15,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 02:42:15,690 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2024-11-16 02:42:15,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-16 02:42:15,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:42:15,691 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:42:15,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 02:42:15,692 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:42:15,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:42:15,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1061952889, now seen corresponding path program 1 times [2024-11-16 02:42:15,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:42:15,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832846903] [2024-11-16 02:42:15,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:15,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:42:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:15,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:42:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:15,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-16 02:42:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:15,781 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 02:42:15,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:42:15,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832846903] [2024-11-16 02:42:15,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832846903] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:42:15,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133751147] [2024-11-16 02:42:15,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:15,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:42:15,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:42:15,785 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:42:15,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 02:42:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:15,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 02:42:15,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:42:15,931 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 02:42:15,935 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:42:15,989 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 02:42:15,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133751147] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:42:15,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:42:15,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-16 02:42:15,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388038697] [2024-11-16 02:42:15,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:42:15,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 02:42:15,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:42:15,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 02:42:15,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-16 02:42:15,991 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 02:42:16,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:42:16,073 INFO L93 Difference]: Finished difference Result 109 states and 129 transitions. [2024-11-16 02:42:16,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 02:42:16,073 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2024-11-16 02:42:16,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:42:16,078 INFO L225 Difference]: With dead ends: 109 [2024-11-16 02:42:16,078 INFO L226 Difference]: Without dead ends: 79 [2024-11-16 02:42:16,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-16 02:42:16,079 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 82 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:42:16,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 169 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:42:16,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-16 02:42:16,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 47. [2024-11-16 02:42:16,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 43 states have internal predecessors, (49), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:42:16,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2024-11-16 02:42:16,086 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 40 [2024-11-16 02:42:16,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:42:16,087 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2024-11-16 02:42:16,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 02:42:16,087 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2024-11-16 02:42:16,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-16 02:42:16,088 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:42:16,088 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:42:16,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 02:42:16,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-16 02:42:16,289 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:42:16,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:42:16,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1472925180, now seen corresponding path program 2 times [2024-11-16 02:42:16,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:42:16,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408218132] [2024-11-16 02:42:16,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:16,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:42:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:16,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:42:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:16,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-16 02:42:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:16,404 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 02:42:16,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:42:16,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408218132] [2024-11-16 02:42:16,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408218132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:42:16,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368279207] [2024-11-16 02:42:16,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:42:16,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:42:16,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:42:16,407 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:42:16,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 02:42:16,472 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:42:16,472 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:42:16,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 02:42:16,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:42:16,561 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 02:42:16,562 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:42:16,655 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 02:42:16,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368279207] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:42:16,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:42:16,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-16 02:42:16,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510744810] [2024-11-16 02:42:16,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:42:16,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-16 02:42:16,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:42:16,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-16 02:42:16,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2024-11-16 02:42:16,657 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 02:42:16,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:42:16,822 INFO L93 Difference]: Finished difference Result 181 states and 216 transitions. [2024-11-16 02:42:16,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 02:42:16,823 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2024-11-16 02:42:16,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:42:16,825 INFO L225 Difference]: With dead ends: 181 [2024-11-16 02:42:16,827 INFO L226 Difference]: Without dead ends: 145 [2024-11-16 02:42:16,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2024-11-16 02:42:16,828 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 281 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:42:16,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 221 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:42:16,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-16 02:42:16,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 59. [2024-11-16 02:42:16,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 55 states have internal predecessors, (61), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:42:16,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2024-11-16 02:42:16,842 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 46 [2024-11-16 02:42:16,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:42:16,842 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2024-11-16 02:42:16,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 02:42:16,843 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2024-11-16 02:42:16,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-16 02:42:16,844 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:42:16,844 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:42:16,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 02:42:17,046 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,SelfDestructingSolverStorable6 [2024-11-16 02:42:17,046 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:42:17,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:42:17,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1312189374, now seen corresponding path program 3 times [2024-11-16 02:42:17,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:42:17,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934515617] [2024-11-16 02:42:17,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:17,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:42:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:17,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:42:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:17,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-16 02:42:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:17,280 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 2 proven. 110 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 02:42:17,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:42:17,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934515617] [2024-11-16 02:42:17,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934515617] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:42:17,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788460315] [2024-11-16 02:42:17,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:42:17,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:42:17,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:42:17,282 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:42:17,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 02:42:17,339 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-16 02:42:17,339 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:42:17,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 02:42:17,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:42:17,442 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-11-16 02:42:17,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:42:17,509 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-11-16 02:42:17,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788460315] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:42:17,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:42:17,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 20 [2024-11-16 02:42:17,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032025592] [2024-11-16 02:42:17,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:42:17,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 02:42:17,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:42:17,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 02:42:17,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2024-11-16 02:42:17,512 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand has 20 states, 20 states have (on average 3.45) internal successors, (69), 20 states have internal predecessors, (69), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-16 02:42:18,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:42:18,626 INFO L93 Difference]: Finished difference Result 285 states and 326 transitions. [2024-11-16 02:42:18,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-16 02:42:18,626 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 20 states have internal predecessors, (69), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 58 [2024-11-16 02:42:18,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:42:18,627 INFO L225 Difference]: With dead ends: 285 [2024-11-16 02:42:18,627 INFO L226 Difference]: Without dead ends: 237 [2024-11-16 02:42:18,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1841 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1913, Invalid=4249, Unknown=0, NotChecked=0, Total=6162 [2024-11-16 02:42:18,630 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 550 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:42:18,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 226 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:42:18,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-16 02:42:18,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 142. [2024-11-16 02:42:18,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 138 states have (on average 1.065217391304348) internal successors, (147), 138 states have internal predecessors, (147), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:42:18,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 151 transitions. [2024-11-16 02:42:18,658 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 151 transitions. Word has length 58 [2024-11-16 02:42:18,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:42:18,659 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 151 transitions. [2024-11-16 02:42:18,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 20 states have internal predecessors, (69), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-16 02:42:18,659 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 151 transitions. [2024-11-16 02:42:18,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-16 02:42:18,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:42:18,660 INFO L215 NwaCegarLoop]: trace histogram [48, 44, 5, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:42:18,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 02:42:18,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:42:18,861 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:42:18,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:42:18,862 INFO L85 PathProgramCache]: Analyzing trace with hash 57034914, now seen corresponding path program 4 times [2024-11-16 02:42:18,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:42:18,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948976535] [2024-11-16 02:42:18,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:18,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:42:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:19,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:42:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:19,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-16 02:42:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:19,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2290 backedges. 872 proven. 132 refuted. 0 times theorem prover too weak. 1286 trivial. 0 not checked. [2024-11-16 02:42:19,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:42:19,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948976535] [2024-11-16 02:42:19,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948976535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:42:19,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670658515] [2024-11-16 02:42:19,246 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:42:19,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:42:19,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:42:19,248 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:42:19,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 02:42:19,332 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:42:19,332 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:42:19,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-16 02:42:19,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:42:19,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-16 02:42:19,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2290 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2286 trivial. 0 not checked. [2024-11-16 02:42:19,464 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:42:19,532 INFO L349 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2024-11-16 02:42:19,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 27 [2024-11-16 02:42:19,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2290 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2286 trivial. 0 not checked. [2024-11-16 02:42:19,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670658515] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:42:19,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:42:19,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 23 [2024-11-16 02:42:19,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713064271] [2024-11-16 02:42:19,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:42:19,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-16 02:42:19,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:42:19,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-16 02:42:19,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2024-11-16 02:42:19,578 INFO L87 Difference]: Start difference. First operand 142 states and 151 transitions. Second operand has 23 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 23 states have internal predecessors, (85), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 02:42:20,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:42:20,898 INFO L93 Difference]: Finished difference Result 479 states and 546 transitions. [2024-11-16 02:42:20,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-16 02:42:20,899 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 23 states have internal predecessors, (85), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 141 [2024-11-16 02:42:20,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:42:20,900 INFO L225 Difference]: With dead ends: 479 [2024-11-16 02:42:20,900 INFO L226 Difference]: Without dead ends: 372 [2024-11-16 02:42:20,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 278 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2173 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1876, Invalid=5434, Unknown=0, NotChecked=0, Total=7310 [2024-11-16 02:42:20,903 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 1550 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:42:20,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 265 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 02:42:20,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-16 02:42:20,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 155. [2024-11-16 02:42:20,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 151 states have (on average 1.0596026490066226) internal successors, (160), 151 states have internal predecessors, (160), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:42:20,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 164 transitions. [2024-11-16 02:42:20,916 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 164 transitions. Word has length 141 [2024-11-16 02:42:20,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:42:20,917 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 164 transitions. [2024-11-16 02:42:20,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 23 states have internal predecessors, (85), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 02:42:20,917 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 164 transitions. [2024-11-16 02:42:20,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-16 02:42:20,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:42:20,918 INFO L215 NwaCegarLoop]: trace histogram [52, 48, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:42:20,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 02:42:21,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:42:21,123 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:42:21,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:42:21,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1487940874, now seen corresponding path program 1 times [2024-11-16 02:42:21,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:42:21,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205620629] [2024-11-16 02:42:21,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:21,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:42:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:21,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:42:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:21,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-16 02:42:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:21,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2689 backedges. 1022 proven. 156 refuted. 0 times theorem prover too weak. 1511 trivial. 0 not checked. [2024-11-16 02:42:21,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:42:21,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205620629] [2024-11-16 02:42:21,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205620629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:42:21,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004473043] [2024-11-16 02:42:21,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:21,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:42:21,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:42:21,516 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:42:21,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 02:42:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:21,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 02:42:21,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:42:21,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2689 backedges. 1022 proven. 156 refuted. 0 times theorem prover too weak. 1511 trivial. 0 not checked. [2024-11-16 02:42:21,888 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:42:22,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2689 backedges. 1022 proven. 156 refuted. 0 times theorem prover too weak. 1511 trivial. 0 not checked. [2024-11-16 02:42:22,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004473043] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:42:22,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:42:22,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 43 [2024-11-16 02:42:22,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243003979] [2024-11-16 02:42:22,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:42:22,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-16 02:42:22,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:42:22,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-16 02:42:22,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=1019, Unknown=0, NotChecked=0, Total=1806 [2024-11-16 02:42:22,167 INFO L87 Difference]: Start difference. First operand 155 states and 164 transitions. Second operand has 43 states, 43 states have (on average 2.697674418604651) internal successors, (116), 43 states have internal predecessors, (116), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 02:42:22,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:42:22,665 INFO L93 Difference]: Finished difference Result 615 states and 737 transitions. [2024-11-16 02:42:22,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-16 02:42:22,666 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.697674418604651) internal successors, (116), 43 states have internal predecessors, (116), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 153 [2024-11-16 02:42:22,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:42:22,668 INFO L225 Difference]: With dead ends: 615 [2024-11-16 02:42:22,669 INFO L226 Difference]: Without dead ends: 497 [2024-11-16 02:42:22,670 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1190, Invalid=1890, Unknown=0, NotChecked=0, Total=3080 [2024-11-16 02:42:22,672 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 647 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:42:22,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 409 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:42:22,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2024-11-16 02:42:22,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 267. [2024-11-16 02:42:22,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 263 states have (on average 1.0342205323193916) internal successors, (272), 263 states have internal predecessors, (272), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:42:22,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 276 transitions. [2024-11-16 02:42:22,697 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 276 transitions. Word has length 153 [2024-11-16 02:42:22,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:42:22,697 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 276 transitions. [2024-11-16 02:42:22,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.697674418604651) internal successors, (116), 43 states have internal predecessors, (116), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 02:42:22,697 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 276 transitions. [2024-11-16 02:42:22,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-16 02:42:22,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:42:22,699 INFO L215 NwaCegarLoop]: trace histogram [108, 104, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:42:22,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 02:42:22,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-16 02:42:22,900 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:42:22,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:42:22,900 INFO L85 PathProgramCache]: Analyzing trace with hash -968498550, now seen corresponding path program 2 times [2024-11-16 02:42:22,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:42:22,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413068281] [2024-11-16 02:42:22,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:22,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:42:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:23,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:42:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:23,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-16 02:42:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:23,939 INFO L134 CoverageAnalysis]: Checked inductivity of 11593 backedges. 4382 proven. 702 refuted. 0 times theorem prover too weak. 6509 trivial. 0 not checked. [2024-11-16 02:42:23,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:42:23,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413068281] [2024-11-16 02:42:23,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413068281] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:42:23,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470123281] [2024-11-16 02:42:23,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:42:23,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:42:23,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:42:23,941 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:42:23,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 02:42:24,173 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:42:24,174 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:42:24,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-16 02:42:24,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:42:24,747 INFO L134 CoverageAnalysis]: Checked inductivity of 11593 backedges. 4382 proven. 702 refuted. 0 times theorem prover too weak. 6509 trivial. 0 not checked. [2024-11-16 02:42:24,748 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:42:25,516 INFO L134 CoverageAnalysis]: Checked inductivity of 11593 backedges. 4382 proven. 702 refuted. 0 times theorem prover too weak. 6509 trivial. 0 not checked. [2024-11-16 02:42:25,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470123281] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:42:25,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:42:25,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 85 [2024-11-16 02:42:25,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302811823] [2024-11-16 02:42:25,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:42:25,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-16 02:42:25,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:42:25,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-16 02:42:25,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3139, Invalid=4001, Unknown=0, NotChecked=0, Total=7140 [2024-11-16 02:42:25,521 INFO L87 Difference]: Start difference. First operand 267 states and 276 transitions. Second operand has 85 states, 85 states have (on average 2.3529411764705883) internal successors, (200), 85 states have internal predecessors, (200), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 02:42:27,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:42:27,055 INFO L93 Difference]: Finished difference Result 1175 states and 1409 transitions. [2024-11-16 02:42:27,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-16 02:42:27,055 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.3529411764705883) internal successors, (200), 85 states have internal predecessors, (200), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 265 [2024-11-16 02:42:27,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:42:27,058 INFO L225 Difference]: With dead ends: 1175 [2024-11-16 02:42:27,058 INFO L226 Difference]: Without dead ends: 973 [2024-11-16 02:42:27,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4425 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4732, Invalid=7700, Unknown=0, NotChecked=0, Total=12432 [2024-11-16 02:42:27,061 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 2483 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2483 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:42:27,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2483 Valid, 604 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 02:42:27,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2024-11-16 02:42:27,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 491. [2024-11-16 02:42:27,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 487 states have (on average 1.0184804928131417) internal successors, (496), 487 states have internal predecessors, (496), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:42:27,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 500 transitions. [2024-11-16 02:42:27,094 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 500 transitions. Word has length 265 [2024-11-16 02:42:27,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:42:27,094 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 500 transitions. [2024-11-16 02:42:27,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.3529411764705883) internal successors, (200), 85 states have internal predecessors, (200), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 02:42:27,094 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 500 transitions. [2024-11-16 02:42:27,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2024-11-16 02:42:27,098 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:42:27,098 INFO L215 NwaCegarLoop]: trace histogram [220, 216, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:42:27,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 02:42:27,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:42:27,299 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:42:27,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:42:27,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1804166774, now seen corresponding path program 3 times [2024-11-16 02:42:27,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:42:27,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937578523] [2024-11-16 02:42:27,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:27,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:42:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:30,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:42:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:30,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-16 02:42:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:30,680 INFO L134 CoverageAnalysis]: Checked inductivity of 48217 backedges. 18158 proven. 2970 refuted. 0 times theorem prover too weak. 27089 trivial. 0 not checked. [2024-11-16 02:42:30,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:42:30,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937578523] [2024-11-16 02:42:30,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937578523] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:42:30,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060053155] [2024-11-16 02:42:30,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:42:30,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:42:30,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:42:30,682 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:42:30,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 02:42:30,938 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-16 02:42:30,938 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:42:30,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 02:42:30,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:42:31,412 INFO L134 CoverageAnalysis]: Checked inductivity of 48217 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 48215 trivial. 0 not checked. [2024-11-16 02:42:31,413 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:42:31,812 INFO L134 CoverageAnalysis]: Checked inductivity of 48217 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 48215 trivial. 0 not checked. [2024-11-16 02:42:31,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060053155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:42:31,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:42:31,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 5, 5] total 64 [2024-11-16 02:42:31,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074075560] [2024-11-16 02:42:31,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:42:31,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-16 02:42:31,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:42:31,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-16 02:42:31,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1622, Invalid=2410, Unknown=0, NotChecked=0, Total=4032 [2024-11-16 02:42:31,816 INFO L87 Difference]: Start difference. First operand 491 states and 500 transitions. Second operand has 64 states, 64 states have (on average 2.796875) internal successors, (179), 64 states have internal predecessors, (179), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-16 02:42:47,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:42:47,898 INFO L93 Difference]: Finished difference Result 2997 states and 3460 transitions. [2024-11-16 02:42:47,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 282 states. [2024-11-16 02:42:47,898 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.796875) internal successors, (179), 64 states have internal predecessors, (179), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 489 [2024-11-16 02:42:47,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:42:47,905 INFO L225 Difference]: With dead ends: 2997 [2024-11-16 02:42:47,905 INFO L226 Difference]: Without dead ends: 2627 [2024-11-16 02:42:47,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1318 GetRequests, 976 SyntacticMatches, 0 SemanticMatches, 342 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39340 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=34942, Invalid=83050, Unknown=0, NotChecked=0, Total=117992 [2024-11-16 02:42:47,933 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 18855 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 1535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18855 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1535 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 02:42:47,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18855 Valid, 528 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1535 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 02:42:47,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2627 states. [2024-11-16 02:42:47,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2627 to 520. [2024-11-16 02:42:47,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 516 states have (on average 1.0232558139534884) internal successors, (528), 516 states have internal predecessors, (528), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:42:47,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 532 transitions. [2024-11-16 02:42:47,983 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 532 transitions. Word has length 489 [2024-11-16 02:42:47,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:42:47,983 INFO L471 AbstractCegarLoop]: Abstraction has 520 states and 532 transitions. [2024-11-16 02:42:47,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.796875) internal successors, (179), 64 states have internal predecessors, (179), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-16 02:42:47,983 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 532 transitions. [2024-11-16 02:42:47,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2024-11-16 02:42:47,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:42:47,988 INFO L215 NwaCegarLoop]: trace histogram [224, 220, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:42:48,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 02:42:48,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:42:48,189 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:42:48,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:42:48,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1970312233, now seen corresponding path program 4 times [2024-11-16 02:42:48,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:42:48,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901362625] [2024-11-16 02:42:48,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:48,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:42:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:51,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:42:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:51,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-16 02:42:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:51,245 INFO L134 CoverageAnalysis]: Checked inductivity of 50067 backedges. 18824 proven. 3080 refuted. 0 times theorem prover too weak. 28163 trivial. 0 not checked. [2024-11-16 02:42:51,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:42:51,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901362625] [2024-11-16 02:42:51,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901362625] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:42:51,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932880660] [2024-11-16 02:42:51,245 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:42:51,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:42:51,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:42:51,247 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:42:51,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 02:42:51,511 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:42:51,512 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:42:51,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 02:42:51,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:42:51,668 INFO L134 CoverageAnalysis]: Checked inductivity of 50067 backedges. 11 proven. 26 refuted. 0 times theorem prover too weak. 50030 trivial. 0 not checked. [2024-11-16 02:42:51,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:42:51,795 INFO L134 CoverageAnalysis]: Checked inductivity of 50067 backedges. 11 proven. 26 refuted. 0 times theorem prover too weak. 50030 trivial. 0 not checked. [2024-11-16 02:42:51,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932880660] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:42:51,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:42:51,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 7, 7] total 66 [2024-11-16 02:42:51,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402273180] [2024-11-16 02:42:51,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:42:51,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-16 02:42:51,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:42:51,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-16 02:42:51,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1680, Invalid=2610, Unknown=0, NotChecked=0, Total=4290 [2024-11-16 02:42:51,798 INFO L87 Difference]: Start difference. First operand 520 states and 532 transitions. Second operand has 66 states, 66 states have (on average 2.787878787878788) internal successors, (184), 66 states have internal predecessors, (184), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 02:42:54,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:42:54,528 INFO L93 Difference]: Finished difference Result 1797 states and 2103 transitions. [2024-11-16 02:42:54,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-16 02:42:54,529 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.787878787878788) internal successors, (184), 66 states have internal predecessors, (184), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 518 [2024-11-16 02:42:54,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:42:54,533 INFO L225 Difference]: With dead ends: 1797 [2024-11-16 02:42:54,533 INFO L226 Difference]: Without dead ends: 1400 [2024-11-16 02:42:54,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1211 GetRequests, 1086 SyntacticMatches, 3 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2337 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=5170, Invalid=10082, Unknown=0, NotChecked=0, Total=15252 [2024-11-16 02:42:54,534 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 2165 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2165 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:42:54,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2165 Valid, 697 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 02:42:54,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2024-11-16 02:42:54,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 579. [2024-11-16 02:42:54,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 575 states have (on average 1.0347826086956522) internal successors, (595), 575 states have internal predecessors, (595), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:42:54,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 599 transitions. [2024-11-16 02:42:54,601 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 599 transitions. Word has length 518 [2024-11-16 02:42:54,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:42:54,602 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 599 transitions. [2024-11-16 02:42:54,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.787878787878788) internal successors, (184), 66 states have internal predecessors, (184), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 02:42:54,602 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 599 transitions. [2024-11-16 02:42:54,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2024-11-16 02:42:54,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:42:54,604 INFO L215 NwaCegarLoop]: trace histogram [228, 224, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:42:54,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-16 02:42:54,804 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,SelfDestructingSolverStorable12 [2024-11-16 02:42:54,804 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:42:54,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:42:54,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1262795403, now seen corresponding path program 1 times [2024-11-16 02:42:54,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:42:54,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105925308] [2024-11-16 02:42:54,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:54,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:42:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:57,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:42:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:57,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-16 02:42:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:57,754 INFO L134 CoverageAnalysis]: Checked inductivity of 51877 backedges. 19502 proven. 3192 refuted. 0 times theorem prover too weak. 29183 trivial. 0 not checked. [2024-11-16 02:42:57,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:42:57,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105925308] [2024-11-16 02:42:57,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105925308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:42:57,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935593524] [2024-11-16 02:42:57,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:42:57,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:42:57,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:42:57,757 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:42:57,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 02:42:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:42:58,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 2460 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-16 02:42:58,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:42:59,689 INFO L134 CoverageAnalysis]: Checked inductivity of 51877 backedges. 19502 proven. 3192 refuted. 0 times theorem prover too weak. 29183 trivial. 0 not checked. [2024-11-16 02:42:59,689 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:43:02,640 INFO L134 CoverageAnalysis]: Checked inductivity of 51877 backedges. 19502 proven. 3192 refuted. 0 times theorem prover too weak. 29183 trivial. 0 not checked. [2024-11-16 02:43:02,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935593524] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:43:02,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:43:02,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 60] total 175 [2024-11-16 02:43:02,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557685716] [2024-11-16 02:43:02,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:43:02,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 175 states [2024-11-16 02:43:02,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:43:02,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2024-11-16 02:43:02,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13459, Invalid=16991, Unknown=0, NotChecked=0, Total=30450 [2024-11-16 02:43:02,648 INFO L87 Difference]: Start difference. First operand 579 states and 599 transitions. Second operand has 175 states, 175 states have (on average 2.182857142857143) internal successors, (382), 175 states have internal predecessors, (382), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 02:43:13,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:43:13,012 INFO L93 Difference]: Finished difference Result 3185 states and 4014 transitions. [2024-11-16 02:43:13,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2024-11-16 02:43:13,012 INFO L78 Accepts]: Start accepts. Automaton has has 175 states, 175 states have (on average 2.182857142857143) internal successors, (382), 175 states have internal predecessors, (382), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 531 [2024-11-16 02:43:13,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:43:13,019 INFO L225 Difference]: With dead ends: 3185 [2024-11-16 02:43:13,019 INFO L226 Difference]: Without dead ends: 2731 [2024-11-16 02:43:13,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1181 GetRequests, 951 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19605 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=20242, Invalid=33350, Unknown=0, NotChecked=0, Total=53592 [2024-11-16 02:43:13,022 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 5457 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 1309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5457 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 1908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1309 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 02:43:13,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5457 Valid, 1104 Invalid, 1908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1309 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 02:43:13,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2731 states. [2024-11-16 02:43:13,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2731 to 1043. [2024-11-16 02:43:13,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1039 states have (on average 1.0192492781520692) internal successors, (1059), 1039 states have internal predecessors, (1059), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:43:13,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1063 transitions. [2024-11-16 02:43:13,123 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1063 transitions. Word has length 531 [2024-11-16 02:43:13,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:43:13,123 INFO L471 AbstractCegarLoop]: Abstraction has 1043 states and 1063 transitions. [2024-11-16 02:43:13,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 175 states, 175 states have (on average 2.182857142857143) internal successors, (382), 175 states have internal predecessors, (382), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 02:43:13,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1063 transitions. [2024-11-16 02:43:13,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2024-11-16 02:43:13,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:43:13,129 INFO L215 NwaCegarLoop]: trace histogram [460, 456, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:43:13,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 02:43:13,330 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,SelfDestructingSolverStorable13 [2024-11-16 02:43:13,330 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:43:13,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:43:13,331 INFO L85 PathProgramCache]: Analyzing trace with hash -2043272437, now seen corresponding path program 2 times [2024-11-16 02:43:13,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:43:13,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016611761] [2024-11-16 02:43:13,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:43:13,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:43:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:43:25,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 02:43:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:43:25,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-16 02:43:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:43:25,728 INFO L134 CoverageAnalysis]: Checked inductivity of 211261 backedges. 79358 proven. 13110 refuted. 0 times theorem prover too weak. 118793 trivial. 0 not checked. [2024-11-16 02:43:25,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:43:25,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016611761] [2024-11-16 02:43:25,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016611761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:43:25,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290519179] [2024-11-16 02:43:25,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:43:25,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:43:25,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:43:25,730 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:43:25,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 02:43:26,596 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:43:26,596 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:43:26,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 4780 conjuncts, 117 conjuncts are in the unsatisfiable core [2024-11-16 02:43:26,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:43:31,169 INFO L134 CoverageAnalysis]: Checked inductivity of 211261 backedges. 79358 proven. 13110 refuted. 0 times theorem prover too weak. 118793 trivial. 0 not checked. [2024-11-16 02:43:31,169 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:43:42,826 INFO L134 CoverageAnalysis]: Checked inductivity of 211261 backedges. 79358 proven. 13110 refuted. 0 times theorem prover too weak. 118793 trivial. 0 not checked. [2024-11-16 02:43:42,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290519179] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:43:42,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:43:42,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118, 118] total 349 [2024-11-16 02:43:42,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970213710] [2024-11-16 02:43:42,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:43:42,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 349 states [2024-11-16 02:43:42,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:43:42,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 349 interpolants. [2024-11-16 02:43:42,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53827, Invalid=67625, Unknown=0, NotChecked=0, Total=121452 [2024-11-16 02:43:42,846 INFO L87 Difference]: Start difference. First operand 1043 states and 1063 transitions. Second operand has 349 states, 349 states have (on average 2.0916905444126073) internal successors, (730), 349 states have internal predecessors, (730), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)