./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 13:01:38,425 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 13:01:38,489 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 13:01:38,492 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 13:01:38,492 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 13:01:38,506 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 13:01:38,506 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 13:01:38,507 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 13:01:38,507 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 13:01:38,507 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 13:01:38,508 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 13:01:38,508 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 13:01:38,508 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 13:01:38,509 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 13:01:38,509 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 13:01:38,509 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 13:01:38,509 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 13:01:38,510 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 13:01:38,510 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 13:01:38,510 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 13:01:38,510 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 13:01:38,511 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 13:01:38,511 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 13:01:38,511 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 13:01:38,511 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 13:01:38,512 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 13:01:38,512 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 13:01:38,512 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 13:01:38,512 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 13:01:38,513 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 13:01:38,513 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 13:01:38,513 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 13:01:38,513 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:01:38,513 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 13:01:38,513 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 13:01:38,514 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 13:01:38,514 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 13:01:38,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 13:01:38,514 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 13:01:38,514 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 13:01:38,514 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 13:01:38,515 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 13:01:38,515 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f [2024-11-20 13:01:38,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 13:01:38,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 13:01:38,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 13:01:38,747 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 13:01:38,748 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 13:01:38,750 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-1.i [2024-11-20 13:01:39,999 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 13:01:40,257 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 13:01:40,258 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-1.i [2024-11-20 13:01:40,272 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45b460f32/0720328386924c5f8b2786b353878189/FLAG688f85976 [2024-11-20 13:01:40,567 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45b460f32/0720328386924c5f8b2786b353878189 [2024-11-20 13:01:40,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 13:01:40,574 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 13:01:40,575 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 13:01:40,575 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 13:01:40,580 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 13:01:40,581 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:01:40" (1/1) ... [2024-11-20 13:01:40,582 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab9bb60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:40, skipping insertion in model container [2024-11-20 13:01:40,582 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:01:40" (1/1) ... [2024-11-20 13:01:40,625 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 13:01:41,007 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/uthash-2.0.2/uthash_BER_nondet_test3-1.i[33519,33532] [2024-11-20 13:01:41,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:01:41,135 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 13:01:41,169 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/uthash-2.0.2/uthash_BER_nondet_test3-1.i[33519,33532] [2024-11-20 13:01:41,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:01:41,267 INFO L204 MainTranslator]: Completed translation [2024-11-20 13:01:41,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:41 WrapperNode [2024-11-20 13:01:41,268 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 13:01:41,268 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 13:01:41,269 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 13:01:41,269 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 13:01:41,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:41" (1/1) ... [2024-11-20 13:01:41,304 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:41" (1/1) ... [2024-11-20 13:01:41,353 INFO L138 Inliner]: procedures = 177, calls = 273, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1431 [2024-11-20 13:01:41,354 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 13:01:41,354 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 13:01:41,354 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 13:01:41,354 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 13:01:41,363 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:41" (1/1) ... [2024-11-20 13:01:41,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:41" (1/1) ... [2024-11-20 13:01:41,374 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:41" (1/1) ... [2024-11-20 13:01:41,439 INFO L175 MemorySlicer]: Split 254 memory accesses to 3 slices as follows [218, 2, 34]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0]. The 54 writes are split as follows [50, 0, 4]. [2024-11-20 13:01:41,439 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:41" (1/1) ... [2024-11-20 13:01:41,439 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:41" (1/1) ... [2024-11-20 13:01:41,487 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:41" (1/1) ... [2024-11-20 13:01:41,507 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:41" (1/1) ... [2024-11-20 13:01:41,514 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:41" (1/1) ... [2024-11-20 13:01:41,524 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:41" (1/1) ... [2024-11-20 13:01:41,533 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 13:01:41,534 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 13:01:41,534 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 13:01:41,535 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 13:01:41,536 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:41" (1/1) ... [2024-11-20 13:01:41,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:01:41,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:01:41,570 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) [2024-11-20 13:01:41,573 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 [2024-11-20 13:01:41,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 13:01:41,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 13:01:41,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 13:01:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-20 13:01:41,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-20 13:01:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 13:01:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 13:01:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 13:01:41,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-20 13:01:41,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-20 13:01:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-20 13:01:41,617 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-20 13:01:41,617 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-20 13:01:41,617 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-20 13:01:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 13:01:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 13:01:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-20 13:01:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-20 13:01:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-20 13:01:41,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 13:01:41,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-20 13:01:41,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-20 13:01:41,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-20 13:01:41,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 13:01:41,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 13:01:41,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 13:01:41,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 13:01:41,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 13:01:41,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 13:01:41,795 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 13:01:41,797 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 13:01:43,012 INFO L? ?]: Removed 313 outVars from TransFormulas that were not future-live. [2024-11-20 13:01:43,013 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 13:01:43,037 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 13:01:43,038 INFO L316 CfgBuilder]: Removed 63 assume(true) statements. [2024-11-20 13:01:43,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:01:43 BoogieIcfgContainer [2024-11-20 13:01:43,038 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 13:01:43,039 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 13:01:43,040 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 13:01:43,043 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 13:01:43,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 01:01:40" (1/3) ... [2024-11-20 13:01:43,043 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1482256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:01:43, skipping insertion in model container [2024-11-20 13:01:43,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:01:41" (2/3) ... [2024-11-20 13:01:43,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1482256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:01:43, skipping insertion in model container [2024-11-20 13:01:43,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:01:43" (3/3) ... [2024-11-20 13:01:43,044 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test3-1.i [2024-11-20 13:01:43,059 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 13:01:43,059 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 13:01:43,130 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:01:43,137 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;@1c6b1a72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:01:43,137 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-20 13:01:43,142 INFO L276 IsEmpty]: Start isEmpty. Operand has 402 states, 393 states have (on average 1.6208651399491094) internal successors, (637), 395 states have internal predecessors, (637), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 13:01:43,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-20 13:01:43,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:01:43,149 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:01:43,149 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:01:43,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:01:43,153 INFO L85 PathProgramCache]: Analyzing trace with hash 513351899, now seen corresponding path program 1 times [2024-11-20 13:01:43,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:01:43,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880003400] [2024-11-20 13:01:43,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:43,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:01:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:01:43,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:01:43,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880003400] [2024-11-20 13:01:43,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880003400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:01:43,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:01:43,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 13:01:43,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403384642] [2024-11-20 13:01:43,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:01:43,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-20 13:01:43,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:01:43,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-20 13:01:43,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 13:01:43,354 INFO L87 Difference]: Start difference. First operand has 402 states, 393 states have (on average 1.6208651399491094) internal successors, (637), 395 states have internal predecessors, (637), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:01:43,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:01:43,414 INFO L93 Difference]: Finished difference Result 801 states and 1292 transitions. [2024-11-20 13:01:43,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-20 13:01:43,416 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-20 13:01:43,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:01:43,426 INFO L225 Difference]: With dead ends: 801 [2024-11-20 13:01:43,426 INFO L226 Difference]: Without dead ends: 398 [2024-11-20 13:01:43,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 13:01:43,432 INFO L432 NwaCegarLoop]: 579 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, 579 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 [2024-11-20 13:01:43,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 13:01:43,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2024-11-20 13:01:43,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2024-11-20 13:01:43,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 390 states have (on average 1.4461538461538461) internal successors, (564), 391 states have internal predecessors, (564), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 13:01:43,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 574 transitions. [2024-11-20 13:01:43,486 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 574 transitions. Word has length 12 [2024-11-20 13:01:43,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:01:43,486 INFO L471 AbstractCegarLoop]: Abstraction has 398 states and 574 transitions. [2024-11-20 13:01:43,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:01:43,487 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 574 transitions. [2024-11-20 13:01:43,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-20 13:01:43,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:01:43,487 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:01:43,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 13:01:43,488 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:01:43,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:01:43,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1021376642, now seen corresponding path program 1 times [2024-11-20 13:01:43,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:01:43,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608063469] [2024-11-20 13:01:43,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:43,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:01:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:43,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:01:43,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:01:43,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608063469] [2024-11-20 13:01:43,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608063469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:01:43,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:01:43,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 13:01:43,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240046306] [2024-11-20 13:01:43,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:01:43,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 13:01:43,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:01:43,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 13:01:43,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:01:43,665 INFO L87 Difference]: Start difference. First operand 398 states and 574 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:01:43,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:01:43,913 INFO L93 Difference]: Finished difference Result 1089 states and 1589 transitions. [2024-11-20 13:01:43,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 13:01:43,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-20 13:01:43,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:01:43,918 INFO L225 Difference]: With dead ends: 1089 [2024-11-20 13:01:43,919 INFO L226 Difference]: Without dead ends: 692 [2024-11-20 13:01:43,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:01:43,921 INFO L432 NwaCegarLoop]: 563 mSDtfsCounter, 430 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 13:01:43,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1642 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 13:01:43,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2024-11-20 13:01:43,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 691. [2024-11-20 13:01:43,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 682 states have (on average 1.466275659824047) internal successors, (1000), 684 states have internal predecessors, (1000), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-20 13:01:43,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2024-11-20 13:01:43,952 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 14 [2024-11-20 13:01:43,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:01:43,953 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2024-11-20 13:01:43,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:01:43,953 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2024-11-20 13:01:43,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-20 13:01:43,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:01:43,960 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:01:43,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 13:01:43,960 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:01:43,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:01:43,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1303678867, now seen corresponding path program 1 times [2024-11-20 13:01:43,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:01:43,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753176302] [2024-11-20 13:01:43,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:43,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:01:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:44,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:01:44,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:01:44,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753176302] [2024-11-20 13:01:44,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753176302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:01:44,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:01:44,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 13:01:44,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366168564] [2024-11-20 13:01:44,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:01:44,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 13:01:44,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:01:44,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 13:01:44,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:01:44,218 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:01:44,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:01:44,322 INFO L93 Difference]: Finished difference Result 963 states and 1402 transitions. [2024-11-20 13:01:44,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 13:01:44,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-20 13:01:44,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:01:44,325 INFO L225 Difference]: With dead ends: 963 [2024-11-20 13:01:44,325 INFO L226 Difference]: Without dead ends: 607 [2024-11-20 13:01:44,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 13:01:44,330 INFO L432 NwaCegarLoop]: 472 mSDtfsCounter, 30 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 13:01:44,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1397 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 13:01:44,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2024-11-20 13:01:44,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2024-11-20 13:01:44,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 598 states have (on average 1.414715719063545) internal successors, (846), 600 states have internal predecessors, (846), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-20 13:01:44,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 858 transitions. [2024-11-20 13:01:44,352 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 858 transitions. Word has length 68 [2024-11-20 13:01:44,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:01:44,353 INFO L471 AbstractCegarLoop]: Abstraction has 607 states and 858 transitions. [2024-11-20 13:01:44,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:01:44,353 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 858 transitions. [2024-11-20 13:01:44,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-20 13:01:44,357 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:01:44,358 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:01:44,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 13:01:44,358 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:01:44,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:01:44,359 INFO L85 PathProgramCache]: Analyzing trace with hash 748783519, now seen corresponding path program 1 times [2024-11-20 13:01:44,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:01:44,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450131265] [2024-11-20 13:01:44,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:44,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:01:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:44,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:01:44,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:01:44,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450131265] [2024-11-20 13:01:44,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450131265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:01:44,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:01:44,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 13:01:44,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235576154] [2024-11-20 13:01:44,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:01:44,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 13:01:44,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:01:44,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 13:01:44,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-20 13:01:44,732 INFO L87 Difference]: Start difference. First operand 607 states and 858 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:01:44,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:01:44,912 INFO L93 Difference]: Finished difference Result 1122 states and 1555 transitions. [2024-11-20 13:01:44,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 13:01:44,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-20 13:01:44,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:01:44,918 INFO L225 Difference]: With dead ends: 1122 [2024-11-20 13:01:44,919 INFO L226 Difference]: Without dead ends: 847 [2024-11-20 13:01:44,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-20 13:01:44,922 INFO L432 NwaCegarLoop]: 522 mSDtfsCounter, 465 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 3004 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 13:01:44,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 3004 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 13:01:44,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2024-11-20 13:01:44,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 606. [2024-11-20 13:01:44,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 597 states have (on average 1.4137353433835846) internal successors, (844), 599 states have internal predecessors, (844), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-20 13:01:44,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 856 transitions. [2024-11-20 13:01:44,953 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 856 transitions. Word has length 68 [2024-11-20 13:01:44,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:01:44,953 INFO L471 AbstractCegarLoop]: Abstraction has 606 states and 856 transitions. [2024-11-20 13:01:44,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:01:44,953 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 856 transitions. [2024-11-20 13:01:44,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-20 13:01:44,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:01:44,958 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:01:44,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 13:01:44,959 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:01:44,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:01:44,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1652152192, now seen corresponding path program 1 times [2024-11-20 13:01:44,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:01:44,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139420357] [2024-11-20 13:01:44,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:44,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:01:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:45,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 13:01:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:45,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 13:01:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:45,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:01:45,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:01:45,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139420357] [2024-11-20 13:01:45,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139420357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:01:45,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:01:45,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 13:01:45,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238276996] [2024-11-20 13:01:45,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:01:45,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 13:01:45,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:01:45,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 13:01:45,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 13:01:45,213 INFO L87 Difference]: Start difference. First operand 606 states and 856 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:45,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:01:45,506 INFO L93 Difference]: Finished difference Result 1121 states and 1576 transitions. [2024-11-20 13:01:45,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 13:01:45,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 105 [2024-11-20 13:01:45,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:01:45,511 INFO L225 Difference]: With dead ends: 1121 [2024-11-20 13:01:45,511 INFO L226 Difference]: Without dead ends: 525 [2024-11-20 13:01:45,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 13:01:45,515 INFO L432 NwaCegarLoop]: 383 mSDtfsCounter, 38 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1432 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 13:01:45,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1432 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 13:01:45,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2024-11-20 13:01:45,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 522. [2024-11-20 13:01:45,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 513 states have (on average 1.345029239766082) internal successors, (690), 515 states have internal predecessors, (690), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-20 13:01:45,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 702 transitions. [2024-11-20 13:01:45,527 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 702 transitions. Word has length 105 [2024-11-20 13:01:45,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:01:45,527 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 702 transitions. [2024-11-20 13:01:45,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:45,528 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 702 transitions. [2024-11-20 13:01:45,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-20 13:01:45,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:01:45,528 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:01:45,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 13:01:45,529 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:01:45,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:01:45,529 INFO L85 PathProgramCache]: Analyzing trace with hash 200828556, now seen corresponding path program 1 times [2024-11-20 13:01:45,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:01:45,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767283338] [2024-11-20 13:01:45,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:45,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:01:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:45,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 13:01:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:45,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 13:01:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:45,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:01:45,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:01:45,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767283338] [2024-11-20 13:01:45,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767283338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:01:45,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:01:45,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 13:01:45,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551547521] [2024-11-20 13:01:45,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:01:45,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 13:01:45,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:01:45,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 13:01:45,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:01:45,767 INFO L87 Difference]: Start difference. First operand 522 states and 702 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:45,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:01:45,998 INFO L93 Difference]: Finished difference Result 1012 states and 1371 transitions. [2024-11-20 13:01:45,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 13:01:45,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 105 [2024-11-20 13:01:45,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:01:46,001 INFO L225 Difference]: With dead ends: 1012 [2024-11-20 13:01:46,001 INFO L226 Difference]: Without dead ends: 525 [2024-11-20 13:01:46,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:01:46,003 INFO L432 NwaCegarLoop]: 396 mSDtfsCounter, 8 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 13:01:46,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1090 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 13:01:46,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2024-11-20 13:01:46,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 522. [2024-11-20 13:01:46,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 513 states have (on average 1.3333333333333333) internal successors, (684), 515 states have internal predecessors, (684), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-20 13:01:46,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 696 transitions. [2024-11-20 13:01:46,015 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 696 transitions. Word has length 105 [2024-11-20 13:01:46,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:01:46,015 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 696 transitions. [2024-11-20 13:01:46,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:46,016 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 696 transitions. [2024-11-20 13:01:46,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-20 13:01:46,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:01:46,016 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:01:46,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 13:01:46,017 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:01:46,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:01:46,017 INFO L85 PathProgramCache]: Analyzing trace with hash 2111871114, now seen corresponding path program 1 times [2024-11-20 13:01:46,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:01:46,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453260090] [2024-11-20 13:01:46,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:46,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:01:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:46,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 13:01:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:46,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 13:01:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:46,476 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 13:01:46,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:01:46,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453260090] [2024-11-20 13:01:46,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453260090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:01:46,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852983728] [2024-11-20 13:01:46,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:46,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:01:46,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:01:46,480 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) [2024-11-20 13:01:46,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 13:01:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:46,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-20 13:01:46,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:01:46,792 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 11 treesize of output 7 [2024-11-20 13:01:46,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2024-11-20 13:01:47,721 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:01:47,721 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:01:47,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852983728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:01:47,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:01:47,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [5] total 15 [2024-11-20 13:01:47,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491460601] [2024-11-20 13:01:47,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:01:47,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 13:01:47,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:01:47,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 13:01:47,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-20 13:01:47,723 INFO L87 Difference]: Start difference. First operand 522 states and 696 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:49,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:01:49,275 INFO L93 Difference]: Finished difference Result 1242 states and 1672 transitions. [2024-11-20 13:01:49,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 13:01:49,275 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 105 [2024-11-20 13:01:49,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:01:49,278 INFO L225 Difference]: With dead ends: 1242 [2024-11-20 13:01:49,279 INFO L226 Difference]: Without dead ends: 765 [2024-11-20 13:01:49,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2024-11-20 13:01:49,280 INFO L432 NwaCegarLoop]: 407 mSDtfsCounter, 502 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 2455 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-20 13:01:49,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 2455 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-20 13:01:49,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2024-11-20 13:01:49,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 522. [2024-11-20 13:01:49,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 513 states have (on average 1.331384015594542) internal successors, (683), 515 states have internal predecessors, (683), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-20 13:01:49,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 695 transitions. [2024-11-20 13:01:49,295 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 695 transitions. Word has length 105 [2024-11-20 13:01:49,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:01:49,296 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 695 transitions. [2024-11-20 13:01:49,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:01:49,296 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 695 transitions. [2024-11-20 13:01:49,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-20 13:01:49,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:01:49,297 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:01:49,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 13:01:49,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:01:49,500 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:01:49,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:01:49,501 INFO L85 PathProgramCache]: Analyzing trace with hash 796076879, now seen corresponding path program 1 times [2024-11-20 13:01:49,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:01:49,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165300691] [2024-11-20 13:01:49,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:49,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:01:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:49,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-20 13:01:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:49,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-20 13:01:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:49,865 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 13:01:49,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:01:49,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165300691] [2024-11-20 13:01:49,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165300691] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:01:49,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140709116] [2024-11-20 13:01:49,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:49,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:01:49,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:01:49,873 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) [2024-11-20 13:01:49,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 13:01:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:50,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-20 13:01:50,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:01:50,166 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 11 treesize of output 7 [2024-11-20 13:01:50,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-20 13:01:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:01:50,341 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:01:50,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140709116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:01:50,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:01:50,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 9 [2024-11-20 13:01:50,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358638654] [2024-11-20 13:01:50,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:01:50,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 13:01:50,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:01:50,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 13:01:50,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-20 13:01:50,342 INFO L87 Difference]: Start difference. First operand 522 states and 695 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 13:01:50,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:01:50,479 INFO L93 Difference]: Finished difference Result 1196 states and 1607 transitions. [2024-11-20 13:01:50,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 13:01:50,480 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 106 [2024-11-20 13:01:50,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:01:50,484 INFO L225 Difference]: With dead ends: 1196 [2024-11-20 13:01:50,484 INFO L226 Difference]: Without dead ends: 766 [2024-11-20 13:01:50,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-20 13:01:50,486 INFO L432 NwaCegarLoop]: 393 mSDtfsCounter, 1018 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 13:01:50,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 1967 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 13:01:50,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2024-11-20 13:01:50,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 525. [2024-11-20 13:01:50,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 515 states have (on average 1.3320388349514563) internal successors, (686), 518 states have internal predecessors, (686), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-20 13:01:50,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 699 transitions. [2024-11-20 13:01:50,504 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 699 transitions. Word has length 106 [2024-11-20 13:01:50,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:01:50,504 INFO L471 AbstractCegarLoop]: Abstraction has 525 states and 699 transitions. [2024-11-20 13:01:50,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 13:01:50,504 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 699 transitions. [2024-11-20 13:01:50,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-20 13:01:50,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:01:50,505 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:01:50,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-20 13:01:50,706 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,SelfDestructingSolverStorable7 [2024-11-20 13:01:50,707 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:01:50,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:01:50,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1405081261, now seen corresponding path program 1 times [2024-11-20 13:01:50,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:01:50,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595133557] [2024-11-20 13:01:50,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:50,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:01:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:56,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-20 13:01:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:56,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-20 13:01:56,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:56,693 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 13:01:56,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:01:56,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595133557] [2024-11-20 13:01:56,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595133557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:01:56,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421585236] [2024-11-20 13:01:56,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:01:56,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:01:56,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:01:56,696 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) [2024-11-20 13:01:56,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 13:01:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:01:57,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-20 13:01:57,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:03:09,440 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)