./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-pthread/cs_stateful-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-pthread/cs_stateful-2.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 c1d6cba599289c2637bd3d8da41e464d318a32e6ae6e6e0e391ff437e6ce1fcc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:17:53,293 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:17:53,369 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:17:53,375 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:17:53,375 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:17:53,398 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:17:53,400 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:17:53,400 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:17:53,400 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:17:53,403 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:17:53,403 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:17:53,403 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:17:53,404 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:17:53,404 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:17:53,404 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:17:53,404 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:17:53,404 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:17:53,404 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:17:53,404 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:17:53,405 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:17:53,405 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:17:53,406 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:17:53,406 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:17:53,406 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:17:53,406 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:17:53,407 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:17:53,407 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:17:53,407 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:17:53,407 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:17:53,407 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:17:53,407 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:17:53,407 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:17:53,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:17:53,408 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:17:53,408 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:17:53,408 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:17:53,408 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:17:53,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:17:53,408 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:17:53,408 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:17:53,409 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:17:53,409 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:17:53,409 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1d6cba599289c2637bd3d8da41e464d318a32e6ae6e6e0e391ff437e6ce1fcc [2024-11-18 15:17:53,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:17:53,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:17:53,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:17:53,617 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:17:53,617 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:17:53,618 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_stateful-2.i [2024-11-18 15:17:54,809 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:17:55,047 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:17:55,049 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_stateful-2.i [2024-11-18 15:17:55,066 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/103125040/ae7e7fc3952347a6bae619e821fead47/FLAGc28b8f34e [2024-11-18 15:17:55,395 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/103125040/ae7e7fc3952347a6bae619e821fead47 [2024-11-18 15:17:55,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:17:55,399 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:17:55,401 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:17:55,402 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:17:55,410 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:17:55,410 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:17:55" (1/1) ... [2024-11-18 15:17:55,411 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39aaf0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:55, skipping insertion in model container [2024-11-18 15:17:55,411 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:17:55" (1/1) ... [2024-11-18 15:17:55,445 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:17:55,699 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/seq-pthread/cs_stateful-2.i[23607,23620] [2024-11-18 15:17:55,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:17:55,793 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:17:55,820 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/seq-pthread/cs_stateful-2.i[23607,23620] [2024-11-18 15:17:55,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:17:55,887 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:17:55,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:55 WrapperNode [2024-11-18 15:17:55,887 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:17:55,888 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:17:55,889 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:17:55,889 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:17:55,894 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:55" (1/1) ... [2024-11-18 15:17:55,915 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:55" (1/1) ... [2024-11-18 15:17:55,947 INFO L138 Inliner]: procedures = 145, calls = 254, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 554 [2024-11-18 15:17:55,948 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:17:55,948 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:17:55,949 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:17:55,949 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:17:55,957 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:55" (1/1) ... [2024-11-18 15:17:55,957 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:55" (1/1) ... [2024-11-18 15:17:55,962 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:55" (1/1) ... [2024-11-18 15:17:55,988 INFO L175 MemorySlicer]: Split 122 memory accesses to 17 slices as follows [2, 3, 7, 0, 8, 8, 8, 20, 12, 7, 3, 10, 12, 10, 6, 3, 3]. 16 percent of accesses are in the largest equivalence class. The 33 initializations are split as follows [2, 0, 0, 0, 3, 3, 3, 6, 6, 0, 0, 2, 4, 2, 2, 0, 0]. The 37 writes are split as follows [0, 1, 1, 0, 2, 2, 2, 8, 3, 1, 1, 4, 4, 4, 2, 1, 1]. [2024-11-18 15:17:55,988 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:55" (1/1) ... [2024-11-18 15:17:55,988 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:55" (1/1) ... [2024-11-18 15:17:56,011 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:55" (1/1) ... [2024-11-18 15:17:56,015 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:55" (1/1) ... [2024-11-18 15:17:56,020 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:55" (1/1) ... [2024-11-18 15:17:56,023 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:55" (1/1) ... [2024-11-18 15:17:56,030 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:17:56,031 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:17:56,031 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:17:56,031 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:17:56,032 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:55" (1/1) ... [2024-11-18 15:17:56,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:17:56,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:17:56,065 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) [2024-11-18 15:17:56,068 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 [2024-11-18 15:17:56,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 15:17:56,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 15:17:56,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 15:17:56,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-18 15:17:56,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-18 15:17:56,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-18 15:17:56,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-18 15:17:56,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-18 15:17:56,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-18 15:17:56,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-18 15:17:56,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-18 15:17:56,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-18 15:17:56,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-18 15:17:56,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-18 15:17:56,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-18 15:17:56,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-18 15:17:56,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2024-11-18 15:17:56,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 15:17:56,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 15:17:56,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 15:17:56,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-18 15:17:56,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-18 15:17:56,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-18 15:17:56,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-18 15:17:56,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-18 15:17:56,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-18 15:17:56,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-18 15:17:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-18 15:17:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-18 15:17:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-18 15:17:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-18 15:17:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-18 15:17:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-11-18 15:17:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2024-11-18 15:17:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 15:17:56,113 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 15:17:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:17:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 15:17:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-18 15:17:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-18 15:17:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-18 15:17:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-18 15:17:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-18 15:17:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-18 15:17:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-18 15:17:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-18 15:17:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-18 15:17:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-18 15:17:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-18 15:17:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-18 15:17:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-11-18 15:17:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-11-18 15:17:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2024-11-18 15:17:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2024-11-18 15:17:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#16 [2024-11-18 15:17:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_init [2024-11-18 15:17:56,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_init [2024-11-18 15:17:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2024-11-18 15:17:56,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2024-11-18 15:17:56,114 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2024-11-18 15:17:56,115 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2024-11-18 15:17:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-18 15:17:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-18 15:17:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-18 15:17:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-18 15:17:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-18 15:17:56,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-18 15:17:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-18 15:17:56,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-18 15:17:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-18 15:17:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-18 15:17:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-18 15:17:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-18 15:17:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-18 15:17:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-11-18 15:17:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2024-11-18 15:17:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2024-11-18 15:17:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#16 [2024-11-18 15:17:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2024-11-18 15:17:56,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2024-11-18 15:17:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-18 15:17:56,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-18 15:17:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 15:17:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-18 15:17:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-18 15:17:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-18 15:17:56,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-18 15:17:56,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-18 15:17:56,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-18 15:17:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-18 15:17:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-18 15:17:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-18 15:17:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-11-18 15:17:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-11-18 15:17:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2024-11-18 15:17:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2024-11-18 15:17:56,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2024-11-18 15:17:56,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2024-11-18 15:17:56,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#15 [2024-11-18 15:17:56,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#16 [2024-11-18 15:17:56,121 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2024-11-18 15:17:56,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2024-11-18 15:17:56,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:17:56,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 15:17:56,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 15:17:56,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 15:17:56,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-18 15:17:56,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-18 15:17:56,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-18 15:17:56,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-18 15:17:56,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-18 15:17:56,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-18 15:17:56,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-18 15:17:56,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-18 15:17:56,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-18 15:17:56,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-18 15:17:56,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-18 15:17:56,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-18 15:17:56,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-18 15:17:56,124 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2024-11-18 15:17:56,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2024-11-18 15:17:56,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:17:56,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:17:56,336 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:17:56,338 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:17:56,711 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L750: SUMMARY for call __CS_cs(); srcloc: null [2024-11-18 15:17:56,711 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L750-1: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset);havoc main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset);havoc main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset; [2024-11-18 15:17:56,711 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint L750-1: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:17:56,711 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:17:56,711 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset);havoc main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset);havoc main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset; [2024-11-18 15:17:56,712 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2024-11-18 15:17:56,712 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset);havoc main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset);havoc main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset; [2024-11-18 15:18:00,906 INFO L? ?]: Removed 78 outVars from TransFormulas that were not future-live. [2024-11-18 15:18:00,906 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:18:00,921 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:18:00,921 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-18 15:18:00,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:18:00 BoogieIcfgContainer [2024-11-18 15:18:00,922 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:18:00,923 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:18:00,924 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:18:00,927 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:18:00,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:17:55" (1/3) ... [2024-11-18 15:18:00,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6991f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:18:00, skipping insertion in model container [2024-11-18 15:18:00,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:17:55" (2/3) ... [2024-11-18 15:18:00,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6991f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:18:00, skipping insertion in model container [2024-11-18 15:18:00,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:18:00" (3/3) ... [2024-11-18 15:18:00,929 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_stateful-2.i [2024-11-18 15:18:00,941 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:18:00,942 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 15:18:00,998 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:18:01,006 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;@4bea006c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:18:01,007 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 15:18:01,010 INFO L276 IsEmpty]: Start isEmpty. Operand has 173 states, 109 states have (on average 1.4495412844036697) internal successors, (158), 110 states have internal predecessors, (158), 54 states have call successors, (54), 8 states have call predecessors, (54), 8 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-18 15:18:01,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-18 15:18:01,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:18:01,023 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:18:01,023 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:18:01,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:18:01,029 INFO L85 PathProgramCache]: Analyzing trace with hash 570935421, now seen corresponding path program 1 times [2024-11-18 15:18:01,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:18:01,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152179509] [2024-11-18 15:18:01,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:01,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:18:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:01,447 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-18 15:18:01,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:18:01,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152179509] [2024-11-18 15:18:01,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152179509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:18:01,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:18:01,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:18:01,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102699663] [2024-11-18 15:18:01,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:18:01,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:18:01,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:18:01,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:18:01,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:18:01,475 INFO L87 Difference]: Start difference. First operand has 173 states, 109 states have (on average 1.4495412844036697) internal successors, (158), 110 states have internal predecessors, (158), 54 states have call successors, (54), 8 states have call predecessors, (54), 8 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-18 15:18:01,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:18:01,555 INFO L93 Difference]: Finished difference Result 348 states and 580 transitions. [2024-11-18 15:18:01,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:18:01,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 72 [2024-11-18 15:18:01,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:18:01,568 INFO L225 Difference]: With dead ends: 348 [2024-11-18 15:18:01,568 INFO L226 Difference]: Without dead ends: 173 [2024-11-18 15:18:01,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:18:01,574 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 4 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:18:01,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 515 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:18:01,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-18 15:18:01,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 170. [2024-11-18 15:18:01,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 107 states have (on average 1.411214953271028) internal successors, (151), 107 states have internal predecessors, (151), 54 states have call successors, (54), 8 states have call predecessors, (54), 8 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-18 15:18:01,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 259 transitions. [2024-11-18 15:18:01,620 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 259 transitions. Word has length 72 [2024-11-18 15:18:01,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:18:01,620 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 259 transitions. [2024-11-18 15:18:01,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-18 15:18:01,621 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 259 transitions. [2024-11-18 15:18:01,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-18 15:18:01,625 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:18:01,625 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:18:01,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 15:18:01,626 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:18:01,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:18:01,627 INFO L85 PathProgramCache]: Analyzing trace with hash -726884241, now seen corresponding path program 1 times [2024-11-18 15:18:01,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:18:01,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601578102] [2024-11-18 15:18:01,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:01,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:18:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:01,814 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-18 15:18:01,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:18:01,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601578102] [2024-11-18 15:18:01,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601578102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:18:01,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:18:01,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:18:01,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873399443] [2024-11-18 15:18:01,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:18:01,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:18:01,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:18:01,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:18:01,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:18:01,818 INFO L87 Difference]: Start difference. First operand 170 states and 259 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-18 15:18:01,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:18:01,857 INFO L93 Difference]: Finished difference Result 339 states and 518 transitions. [2024-11-18 15:18:01,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:18:01,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 75 [2024-11-18 15:18:01,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:18:01,860 INFO L225 Difference]: With dead ends: 339 [2024-11-18 15:18:01,860 INFO L226 Difference]: Without dead ends: 172 [2024-11-18 15:18:01,862 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:18:01,863 INFO L432 NwaCegarLoop]: 256 mSDtfsCounter, 1 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:18:01,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 509 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:18:01,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-18 15:18:01,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 171. [2024-11-18 15:18:01,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 108 states have (on average 1.4074074074074074) internal successors, (152), 108 states have internal predecessors, (152), 54 states have call successors, (54), 8 states have call predecessors, (54), 8 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-18 15:18:01,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 260 transitions. [2024-11-18 15:18:01,878 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 260 transitions. Word has length 75 [2024-11-18 15:18:01,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:18:01,881 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 260 transitions. [2024-11-18 15:18:01,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-18 15:18:01,881 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 260 transitions. [2024-11-18 15:18:01,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-18 15:18:01,884 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:18:01,884 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:18:01,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 15:18:01,884 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:18:01,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:18:01,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1394128817, now seen corresponding path program 1 times [2024-11-18 15:18:01,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:18:01,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496965183] [2024-11-18 15:18:01,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:01,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:18:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:02,080 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-18 15:18:02,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:18:02,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496965183] [2024-11-18 15:18:02,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496965183] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:18:02,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231564903] [2024-11-18 15:18:02,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:02,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:18:02,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:18:02,085 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) [2024-11-18 15:18:02,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 15:18:02,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:02,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 15:18:02,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:18:02,417 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-18 15:18:02,417 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:18:02,482 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-18 15:18:02,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231564903] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:18:02,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:18:02,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-18 15:18:02,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153976974] [2024-11-18 15:18:02,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:18:02,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:18:02,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:18:02,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:18:02,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:18:02,484 INFO L87 Difference]: Start difference. First operand 171 states and 260 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 15:18:02,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:18:02,534 INFO L93 Difference]: Finished difference Result 343 states and 523 transitions. [2024-11-18 15:18:02,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 15:18:02,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 77 [2024-11-18 15:18:02,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:18:02,538 INFO L225 Difference]: With dead ends: 343 [2024-11-18 15:18:02,538 INFO L226 Difference]: Without dead ends: 175 [2024-11-18 15:18:02,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:18:02,540 INFO L432 NwaCegarLoop]: 256 mSDtfsCounter, 1 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:18:02,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 509 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:18:02,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-18 15:18:02,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2024-11-18 15:18:02,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 112 states have (on average 1.3928571428571428) internal successors, (156), 112 states have internal predecessors, (156), 54 states have call successors, (54), 8 states have call predecessors, (54), 8 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-18 15:18:02,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 264 transitions. [2024-11-18 15:18:02,551 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 264 transitions. Word has length 77 [2024-11-18 15:18:02,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:18:02,551 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 264 transitions. [2024-11-18 15:18:02,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 15:18:02,551 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 264 transitions. [2024-11-18 15:18:02,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-18 15:18:02,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:18:02,553 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:18:02,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 15:18:02,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:18:02,754 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:18:02,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:18:02,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1761170251, now seen corresponding path program 2 times [2024-11-18 15:18:02,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:18:02,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562908305] [2024-11-18 15:18:02,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 15:18:02,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:18:02,816 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-18 15:18:02,816 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 15:18:02,926 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-18 15:18:02,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:18:02,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562908305] [2024-11-18 15:18:02,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562908305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:18:02,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:18:02,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:18:02,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947596154] [2024-11-18 15:18:02,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:18:02,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:18:02,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:18:02,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:18:02,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:18:02,931 INFO L87 Difference]: Start difference. First operand 175 states and 264 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-18 15:18:02,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:18:02,989 INFO L93 Difference]: Finished difference Result 335 states and 518 transitions. [2024-11-18 15:18:02,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:18:02,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 81 [2024-11-18 15:18:02,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:18:02,994 INFO L225 Difference]: With dead ends: 335 [2024-11-18 15:18:02,994 INFO L226 Difference]: Without dead ends: 309 [2024-11-18 15:18:02,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:18:02,995 INFO L432 NwaCegarLoop]: 336 mSDtfsCounter, 218 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:18:02,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 915 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:18:02,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-18 15:18:03,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 308. [2024-11-18 15:18:03,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 194 states have (on average 1.4278350515463918) internal successors, (277), 194 states have internal predecessors, (277), 97 states have call successors, (97), 16 states have call predecessors, (97), 16 states have return successors, (105), 97 states have call predecessors, (105), 97 states have call successors, (105) [2024-11-18 15:18:03,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 479 transitions. [2024-11-18 15:18:03,030 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 479 transitions. Word has length 81 [2024-11-18 15:18:03,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:18:03,030 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 479 transitions. [2024-11-18 15:18:03,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-18 15:18:03,030 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 479 transitions. [2024-11-18 15:18:03,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-18 15:18:03,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:18:03,033 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:18:03,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 15:18:03,033 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:18:03,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:18:03,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1792426119, now seen corresponding path program 1 times [2024-11-18 15:18:03,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:18:03,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874441054] [2024-11-18 15:18:03,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:03,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:18:03,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:03,223 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2024-11-18 15:18:03,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:18:03,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874441054] [2024-11-18 15:18:03,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874441054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:18:03,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803519809] [2024-11-18 15:18:03,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:03,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:18:03,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:18:03,227 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) [2024-11-18 15:18:03,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 15:18:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:03,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 15:18:03,566 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:18:03,596 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2024-11-18 15:18:03,596 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:18:03,737 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2024-11-18 15:18:03,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803519809] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:18:03,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:18:03,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-11-18 15:18:03,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770080816] [2024-11-18 15:18:03,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:18:03,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:18:03,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:18:03,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:18:03,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:18:03,739 INFO L87 Difference]: Start difference. First operand 308 states and 479 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2024-11-18 15:18:03,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:18:03,780 INFO L93 Difference]: Finished difference Result 613 states and 955 transitions. [2024-11-18 15:18:03,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:18:03,781 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 147 [2024-11-18 15:18:03,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:18:03,783 INFO L225 Difference]: With dead ends: 613 [2024-11-18 15:18:03,783 INFO L226 Difference]: Without dead ends: 317 [2024-11-18 15:18:03,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 291 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:18:03,785 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 4 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:18:03,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1012 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:18:03,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2024-11-18 15:18:03,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2024-11-18 15:18:03,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 203 states have (on average 1.4137931034482758) internal successors, (287), 203 states have internal predecessors, (287), 97 states have call successors, (97), 16 states have call predecessors, (97), 16 states have return successors, (105), 97 states have call predecessors, (105), 97 states have call successors, (105) [2024-11-18 15:18:03,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 489 transitions. [2024-11-18 15:18:03,802 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 489 transitions. Word has length 147 [2024-11-18 15:18:03,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:18:03,802 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 489 transitions. [2024-11-18 15:18:03,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2024-11-18 15:18:03,802 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 489 transitions. [2024-11-18 15:18:03,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-18 15:18:03,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:18:03,805 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 6, 6, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:18:03,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 15:18:04,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:18:04,006 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:18:04,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:18:04,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1023329023, now seen corresponding path program 1 times [2024-11-18 15:18:04,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:18:04,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868859804] [2024-11-18 15:18:04,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:04,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:18:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:04,443 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2024-11-18 15:18:04,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:18:04,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868859804] [2024-11-18 15:18:04,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868859804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:18:04,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:18:04,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:18:04,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671521573] [2024-11-18 15:18:04,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:18:04,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:18:04,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:18:04,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:18:04,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:18:04,446 INFO L87 Difference]: Start difference. First operand 317 states and 489 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 15:18:06,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:18:06,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:18:06,350 INFO L93 Difference]: Finished difference Result 881 states and 1381 transitions. [2024-11-18 15:18:06,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:18:06,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 156 [2024-11-18 15:18:06,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:18:06,355 INFO L225 Difference]: With dead ends: 881 [2024-11-18 15:18:06,356 INFO L226 Difference]: Without dead ends: 602 [2024-11-18 15:18:06,357 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 [2024-11-18 15:18:06,358 INFO L432 NwaCegarLoop]: 303 mSDtfsCounter, 239 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 15:18:06,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 844 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 15:18:06,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2024-11-18 15:18:06,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 598. [2024-11-18 15:18:06,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 374 states have (on average 1.427807486631016) internal successors, (534), 374 states have internal predecessors, (534), 191 states have call successors, (191), 32 states have call predecessors, (191), 32 states have return successors, (214), 191 states have call predecessors, (214), 191 states have call successors, (214) [2024-11-18 15:18:06,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 939 transitions. [2024-11-18 15:18:06,401 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 939 transitions. Word has length 156 [2024-11-18 15:18:06,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:18:06,401 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 939 transitions. [2024-11-18 15:18:06,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 15:18:06,402 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 939 transitions. [2024-11-18 15:18:06,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-18 15:18:06,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:18:06,405 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 6, 6, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:18:06,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 15:18:06,406 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:18:06,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:18:06,406 INFO L85 PathProgramCache]: Analyzing trace with hash -2120851187, now seen corresponding path program 1 times [2024-11-18 15:18:06,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:18:06,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596197293] [2024-11-18 15:18:06,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:06,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:18:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:06,828 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2024-11-18 15:18:06,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:18:06,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596197293] [2024-11-18 15:18:06,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596197293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:18:06,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:18:06,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:18:06,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638416556] [2024-11-18 15:18:06,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:18:06,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:18:06,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:18:06,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:18:06,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:18:06,832 INFO L87 Difference]: Start difference. First operand 598 states and 939 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-18 15:18:11,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:18:11,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:18:11,573 INFO L93 Difference]: Finished difference Result 648 states and 1002 transitions. [2024-11-18 15:18:11,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 15:18:11,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 156 [2024-11-18 15:18:11,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:18:11,579 INFO L225 Difference]: With dead ends: 648 [2024-11-18 15:18:11,579 INFO L226 Difference]: Without dead ends: 607 [2024-11-18 15:18:11,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:18:11,581 INFO L432 NwaCegarLoop]: 293 mSDtfsCounter, 252 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-18 15:18:11,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 1079 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 72 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2024-11-18 15:18:11,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2024-11-18 15:18:11,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 598. [2024-11-18 15:18:11,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 376 states have (on average 1.4148936170212767) internal successors, (532), 378 states have internal predecessors, (532), 186 states have call successors, (186), 32 states have call predecessors, (186), 35 states have return successors, (215), 187 states have call predecessors, (215), 186 states have call successors, (215) [2024-11-18 15:18:11,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 933 transitions. [2024-11-18 15:18:11,624 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 933 transitions. Word has length 156 [2024-11-18 15:18:11,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:18:11,625 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 933 transitions. [2024-11-18 15:18:11,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-18 15:18:11,625 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 933 transitions. [2024-11-18 15:18:11,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-18 15:18:11,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:18:11,628 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 6, 6, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:18:11,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 15:18:11,628 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:18:11,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:18:11,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1658576225, now seen corresponding path program 1 times [2024-11-18 15:18:11,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:18:11,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787985448] [2024-11-18 15:18:11,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:11,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:18:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:11,998 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2024-11-18 15:18:11,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:18:11,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787985448] [2024-11-18 15:18:11,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787985448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:18:11,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:18:11,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:18:11,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320370997] [2024-11-18 15:18:11,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:18:12,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:18:12,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:18:12,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:18:12,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:18:12,001 INFO L87 Difference]: Start difference. First operand 598 states and 933 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 15:18:16,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:18:16,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:18:16,142 INFO L93 Difference]: Finished difference Result 1112 states and 1724 transitions. [2024-11-18 15:18:16,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:18:16,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 156 [2024-11-18 15:18:16,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:18:16,147 INFO L225 Difference]: With dead ends: 1112 [2024-11-18 15:18:16,147 INFO L226 Difference]: Without dead ends: 538 [2024-11-18 15:18:16,149 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 [2024-11-18 15:18:16,150 INFO L432 NwaCegarLoop]: 303 mSDtfsCounter, 235 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:18:16,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 845 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2024-11-18 15:18:16,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-11-18 15:18:16,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 531. [2024-11-18 15:18:16,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 335 states have (on average 1.3402985074626865) internal successors, (449), 336 states have internal predecessors, (449), 164 states have call successors, (164), 29 states have call predecessors, (164), 31 states have return successors, (184), 165 states have call predecessors, (184), 164 states have call successors, (184) [2024-11-18 15:18:16,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 797 transitions. [2024-11-18 15:18:16,180 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 797 transitions. Word has length 156 [2024-11-18 15:18:16,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:18:16,180 INFO L471 AbstractCegarLoop]: Abstraction has 531 states and 797 transitions. [2024-11-18 15:18:16,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 15:18:16,181 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 797 transitions. [2024-11-18 15:18:16,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-18 15:18:16,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:18:16,184 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 6, 6, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:18:16,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 15:18:16,184 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:18:16,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:18:16,185 INFO L85 PathProgramCache]: Analyzing trace with hash 365031039, now seen corresponding path program 1 times [2024-11-18 15:18:16,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:18:16,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487403963] [2024-11-18 15:18:16,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:16,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:18:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:16,703 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2024-11-18 15:18:16,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:18:16,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487403963] [2024-11-18 15:18:16,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487403963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:18:16,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:18:16,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:18:16,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467702886] [2024-11-18 15:18:16,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:18:16,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:18:16,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:18:16,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:18:16,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:18:16,706 INFO L87 Difference]: Start difference. First operand 531 states and 797 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-18 15:18:17,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:18:17,736 INFO L93 Difference]: Finished difference Result 578 states and 855 transitions. [2024-11-18 15:18:17,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 15:18:17,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 156 [2024-11-18 15:18:17,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:18:17,740 INFO L225 Difference]: With dead ends: 578 [2024-11-18 15:18:17,740 INFO L226 Difference]: Without dead ends: 456 [2024-11-18 15:18:17,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:18:17,742 INFO L432 NwaCegarLoop]: 316 mSDtfsCounter, 259 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:18:17,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 1022 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 15:18:17,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2024-11-18 15:18:17,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 446. [2024-11-18 15:18:17,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 286 states have (on average 1.3496503496503496) internal successors, (386), 287 states have internal predecessors, (386), 132 states have call successors, (132), 25 states have call predecessors, (132), 27 states have return successors, (150), 133 states have call predecessors, (150), 132 states have call successors, (150) [2024-11-18 15:18:17,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 668 transitions. [2024-11-18 15:18:17,767 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 668 transitions. Word has length 156 [2024-11-18 15:18:17,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:18:17,767 INFO L471 AbstractCegarLoop]: Abstraction has 446 states and 668 transitions. [2024-11-18 15:18:17,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-18 15:18:17,767 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 668 transitions. [2024-11-18 15:18:17,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-18 15:18:17,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:18:17,770 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 8, 8, 8, 8, 8, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:18:17,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 15:18:17,771 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:18:17,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:18:17,771 INFO L85 PathProgramCache]: Analyzing trace with hash -180066932, now seen corresponding path program 1 times [2024-11-18 15:18:17,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:18:17,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225631993] [2024-11-18 15:18:17,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:17,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:18:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:18,144 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 802 trivial. 0 not checked. [2024-11-18 15:18:18,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:18:18,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225631993] [2024-11-18 15:18:18,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225631993] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:18:18,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716224072] [2024-11-18 15:18:18,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:18,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:18:18,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:18:18,147 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) [2024-11-18 15:18:18,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 15:18:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:18,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 1526 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 15:18:18,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:18:18,724 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 320 proven. 4 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2024-11-18 15:18:18,725 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:18:19,085 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 802 trivial. 0 not checked. [2024-11-18 15:18:19,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716224072] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:18:19,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:18:19,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 11 [2024-11-18 15:18:19,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295488130] [2024-11-18 15:18:19,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:18:19,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 15:18:19,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:18:19,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 15:18:19,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-18 15:18:19,087 INFO L87 Difference]: Start difference. First operand 446 states and 668 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 9 states have call successors, (50), 5 states have call predecessors, (50), 6 states have return successors, (51), 7 states have call predecessors, (51), 9 states have call successors, (51) [2024-11-18 15:18:20,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:18:21,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:18:21,232 INFO L93 Difference]: Finished difference Result 1098 states and 1682 transitions. [2024-11-18 15:18:21,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 15:18:21,233 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 9 states have call successors, (50), 5 states have call predecessors, (50), 6 states have return successors, (51), 7 states have call predecessors, (51), 9 states have call successors, (51) Word has length 215 [2024-11-18 15:18:21,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:18:21,237 INFO L225 Difference]: With dead ends: 1098 [2024-11-18 15:18:21,237 INFO L226 Difference]: Without dead ends: 696 [2024-11-18 15:18:21,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-18 15:18:21,239 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 629 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:18:21,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 980 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-18 15:18:21,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2024-11-18 15:18:21,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 679. [2024-11-18 15:18:21,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 428 states have (on average 1.3738317757009346) internal successors, (588), 431 states have internal predecessors, (588), 205 states have call successors, (205), 43 states have call predecessors, (205), 45 states have return successors, (237), 204 states have call predecessors, (237), 205 states have call successors, (237) [2024-11-18 15:18:21,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1030 transitions. [2024-11-18 15:18:21,286 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1030 transitions. Word has length 215 [2024-11-18 15:18:21,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:18:21,286 INFO L471 AbstractCegarLoop]: Abstraction has 679 states and 1030 transitions. [2024-11-18 15:18:21,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 9 states have call successors, (50), 5 states have call predecessors, (50), 6 states have return successors, (51), 7 states have call predecessors, (51), 9 states have call successors, (51) [2024-11-18 15:18:21,287 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1030 transitions. [2024-11-18 15:18:21,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-18 15:18:21,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:18:21,290 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 8, 8, 8, 8, 8, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:18:21,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 15:18:21,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:18:21,491 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:18:21,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:18:21,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1001433004, now seen corresponding path program 1 times [2024-11-18 15:18:21,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:18:21,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093670388] [2024-11-18 15:18:21,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:21,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:18:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:23,071 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 802 trivial. 0 not checked. [2024-11-18 15:18:23,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:18:23,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093670388] [2024-11-18 15:18:23,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093670388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:18:23,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56756971] [2024-11-18 15:18:23,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:18:23,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:18:23,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:18:23,074 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:18:23,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 15:18:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:18:23,559 INFO L255 TraceCheckSpWp]: Trace formula consists of 1624 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-18 15:18:23,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:18:23,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-18 15:18:27,476 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-11-18 15:18:27,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 15 [2024-11-18 15:18:28,464 INFO L349 Elim1Store]: treesize reduction 35, result has 27.1 percent of original size [2024-11-18 15:18:28,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2024-11-18 15:18:47,855 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 473 proven. 4 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2024-11-18 15:18:47,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:18:48,025 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 25 treesize of output 23 [2024-11-18 15:18:48,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 35 treesize of output 31 [2024-11-18 15:18:48,343 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 20 treesize of output 18 [2024-11-18 15:18:48,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 26 treesize of output 22 [2024-11-18 15:18:48,388 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 20 treesize of output 18 [2024-11-18 15:18:48,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 26 treesize of output 22 [2024-11-18 15:18:48,523 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 802 trivial. 0 not checked. [2024-11-18 15:18:48,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56756971] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:18:48,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:18:48,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 9] total 34 [2024-11-18 15:18:48,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217412274] [2024-11-18 15:18:48,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:18:48,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-18 15:18:48,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:18:48,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-18 15:18:48,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1009, Unknown=1, NotChecked=0, Total=1122 [2024-11-18 15:18:48,525 INFO L87 Difference]: Start difference. First operand 679 states and 1030 transitions. Second operand has 34 states, 32 states have (on average 4.5) internal successors, (144), 32 states have internal predecessors, (144), 16 states have call successors, (64), 10 states have call predecessors, (64), 13 states have return successors, (65), 15 states have call predecessors, (65), 16 states have call successors, (65) [2024-11-18 15:18:52,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:18:56,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:19:00,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:19:03,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 15:19:07,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:19:07,977 INFO L93 Difference]: Finished difference Result 1327 states and 2065 transitions. [2024-11-18 15:19:07,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-18 15:19:07,977 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 4.5) internal successors, (144), 32 states have internal predecessors, (144), 16 states have call successors, (64), 10 states have call predecessors, (64), 13 states have return successors, (65), 15 states have call predecessors, (65), 16 states have call successors, (65) Word has length 215 [2024-11-18 15:19:07,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:19:07,984 INFO L225 Difference]: With dead ends: 1327 [2024-11-18 15:19:07,984 INFO L226 Difference]: Without dead ends: 777 [2024-11-18 15:19:07,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 410 SyntacticMatches, 8 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=588, Invalid=3193, Unknown=1, NotChecked=0, Total=3782 [2024-11-18 15:19:07,988 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 1755 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 3481 mSolverCounterSat, 1596 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1755 SdHoareTripleChecker+Valid, 2531 SdHoareTripleChecker+Invalid, 5080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1596 IncrementalHoareTripleChecker+Valid, 3481 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:19:07,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1755 Valid, 2531 Invalid, 5080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1596 Valid, 3481 Invalid, 3 Unknown, 0 Unchecked, 18.4s Time] [2024-11-18 15:19:07,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2024-11-18 15:19:08,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 728. [2024-11-18 15:19:08,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 458 states have (on average 1.3733624454148472) internal successors, (629), 464 states have internal predecessors, (629), 219 states have call successors, (219), 43 states have call predecessors, (219), 50 states have return successors, (276), 220 states have call predecessors, (276), 219 states have call successors, (276) [2024-11-18 15:19:08,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1124 transitions. [2024-11-18 15:19:08,047 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1124 transitions. Word has length 215 [2024-11-18 15:19:08,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:19:08,048 INFO L471 AbstractCegarLoop]: Abstraction has 728 states and 1124 transitions. [2024-11-18 15:19:08,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 4.5) internal successors, (144), 32 states have internal predecessors, (144), 16 states have call successors, (64), 10 states have call predecessors, (64), 13 states have return successors, (65), 15 states have call predecessors, (65), 16 states have call successors, (65) [2024-11-18 15:19:08,048 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1124 transitions. [2024-11-18 15:19:08,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-11-18 15:19:08,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:19:08,053 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 9, 9, 9, 9, 9, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:19:08,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 15:19:08,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:19:08,253 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:19:08,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:19:08,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1749135152, now seen corresponding path program 1 times [2024-11-18 15:19:08,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:19:08,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18329766] [2024-11-18 15:19:08,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:19:08,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:19:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:19:10,172 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 915 trivial. 0 not checked. [2024-11-18 15:19:10,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:19:10,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18329766] [2024-11-18 15:19:10,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18329766] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:19:10,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479564138] [2024-11-18 15:19:10,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:19:10,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:19:10,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:19:10,174 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:19:10,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 15:19:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:19:10,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 1821 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-18 15:19:10,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:19:10,731 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 27 treesize of output 1 [2024-11-18 15:19:13,899 INFO L349 Elim1Store]: treesize reduction 10, result has 65.5 percent of original size [2024-11-18 15:19:13,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 50 [2024-11-18 15:19:14,070 INFO L349 Elim1Store]: treesize reduction 61, result has 60.9 percent of original size [2024-11-18 15:19:14,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 127 [2024-11-18 15:19:17,207 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 15:19:17,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 29 [2024-11-18 15:19:17,246 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 495 proven. 57 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2024-11-18 15:19:17,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:19:17,462 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 28 treesize of output 26 [2024-11-18 15:19:17,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 142 treesize of output 134 [2024-11-18 15:19:17,814 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 21 treesize of output 19 [2024-11-18 15:19:17,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 30 treesize of output 26 [2024-11-18 15:19:17,895 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 21 treesize of output 19 [2024-11-18 15:19:17,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 30 treesize of output 26 [2024-11-18 15:19:18,110 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2024-11-18 15:19:18,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479564138] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:19:18,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:19:18,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18, 14] total 36 [2024-11-18 15:19:18,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080434380] [2024-11-18 15:19:18,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:19:18,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-18 15:19:18,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:19:18,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-18 15:19:18,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1117, Unknown=3, NotChecked=0, Total=1260 [2024-11-18 15:19:18,112 INFO L87 Difference]: Start difference. First operand 728 states and 1124 transitions. Second operand has 36 states, 32 states have (on average 5.0) internal successors, (160), 35 states have internal predecessors, (160), 19 states have call successors, (68), 9 states have call predecessors, (68), 14 states have return successors, (68), 16 states have call predecessors, (68), 19 states have call successors, (68) [2024-11-18 15:19:22,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-18 15:19:25,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []