./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-pthread/cs_lamport.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-pthread/cs_lamport.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 d49d34698411f85a0a6e83adb869f73bcb1d6aade5262b0ab5e3122db7000276 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 03:03:11,546 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 03:03:11,608 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 03:03:11,617 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 03:03:11,619 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 03:03:11,648 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 03:03:11,648 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 03:03:11,648 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 03:03:11,649 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 03:03:11,649 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 03:03:11,661 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 03:03:11,662 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 03:03:11,662 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 03:03:11,664 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 03:03:11,664 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 03:03:11,665 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 03:03:11,665 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 03:03:11,665 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 03:03:11,665 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 03:03:11,666 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 03:03:11,666 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 03:03:11,667 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 03:03:11,667 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 03:03:11,667 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 03:03:11,667 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 03:03:11,668 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 03:03:11,668 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 03:03:11,668 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 03:03:11,669 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 03:03:11,669 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 03:03:11,669 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 03:03:11,669 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 03:03:11,674 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 03:03:11,675 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 03:03:11,675 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 03:03:11,675 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 03:03:11,675 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 03:03:11,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 03:03:11,676 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 03:03:11,676 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 03:03:11,676 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 03:03:11,676 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 03:03:11,676 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d49d34698411f85a0a6e83adb869f73bcb1d6aade5262b0ab5e3122db7000276 [2024-11-22 03:03:11,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 03:03:11,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 03:03:11,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 03:03:11,970 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 03:03:11,971 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 03:03:11,972 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_lamport.i [2024-11-22 03:03:13,528 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 03:03:13,854 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 03:03:13,855 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_lamport.i [2024-11-22 03:03:13,878 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22d65b0cb/63f4e24d31e64a4c990f0dbadcfe4416/FLAG951ddf927 [2024-11-22 03:03:14,117 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22d65b0cb/63f4e24d31e64a4c990f0dbadcfe4416 [2024-11-22 03:03:14,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 03:03:14,121 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 03:03:14,122 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 03:03:14,122 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 03:03:14,131 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 03:03:14,131 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:03:14" (1/1) ... [2024-11-22 03:03:14,133 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56b7986f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:03:14, skipping insertion in model container [2024-11-22 03:03:14,133 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:03:14" (1/1) ... [2024-11-22 03:03:14,171 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 03:03:14,509 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_lamport.i[23604,23617] [2024-11-22 03:03:14,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 03:03:14,692 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 03:03:14,722 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_lamport.i[23604,23617] [2024-11-22 03:03:14,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 03:03:14,816 INFO L204 MainTranslator]: Completed translation [2024-11-22 03:03:14,817 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:03:14 WrapperNode [2024-11-22 03:03:14,817 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 03:03:14,818 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 03:03:14,818 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 03:03:14,819 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 03:03:14,826 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:03:14" (1/1) ... [2024-11-22 03:03:14,853 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:03:14" (1/1) ... [2024-11-22 03:03:14,901 INFO L138 Inliner]: procedures = 145, calls = 360, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 477 [2024-11-22 03:03:14,902 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 03:03:14,903 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 03:03:14,903 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 03:03:14,903 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 03:03:14,920 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:03:14" (1/1) ... [2024-11-22 03:03:14,920 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:03:14" (1/1) ... [2024-11-22 03:03:14,932 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:03:14" (1/1) ... [2024-11-22 03:03:15,000 INFO L175 MemorySlicer]: Split 168 memory accesses to 20 slices as follows [2, 5, 8, 5, 6, 8, 5, 8, 29, 21, 7, 7, 7, 13, 7, 7, 13, 5, 5, 0]. 17 percent of accesses are in the largest equivalence class. The 46 initializations are split as follows [2, 0, 3, 0, 2, 3, 0, 3, 9, 9, 3, 3, 3, 0, 3, 3, 0, 0, 0, 0]. The 42 writes are split as follows [0, 1, 2, 1, 2, 2, 1, 2, 11, 6, 2, 2, 2, 1, 2, 2, 1, 1, 1, 0]. [2024-11-22 03:03:15,001 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:03:14" (1/1) ... [2024-11-22 03:03:15,001 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:03:14" (1/1) ... [2024-11-22 03:03:15,058 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:03:14" (1/1) ... [2024-11-22 03:03:15,067 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:03:14" (1/1) ... [2024-11-22 03:03:15,082 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:03:14" (1/1) ... [2024-11-22 03:03:15,092 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:03:14" (1/1) ... [2024-11-22 03:03:15,111 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 03:03:15,115 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 03:03:15,115 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 03:03:15,115 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 03:03:15,117 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:03:14" (1/1) ... [2024-11-22 03:03:15,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 03:03:15,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:03:15,164 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) [2024-11-22 03:03:15,169 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 [2024-11-22 03:03:15,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 03:03:15,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 03:03:15,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 03:03:15,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-22 03:03:15,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-22 03:03:15,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-22 03:03:15,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-22 03:03:15,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-22 03:03:15,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-22 03:03:15,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-22 03:03:15,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-22 03:03:15,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-22 03:03:15,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-22 03:03:15,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-22 03:03:15,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-22 03:03:15,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-22 03:03:15,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2024-11-22 03:03:15,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#17 [2024-11-22 03:03:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#18 [2024-11-22 03:03:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#19 [2024-11-22 03:03:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 03:03:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 03:03:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 03:03:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-22 03:03:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-22 03:03:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-22 03:03:15,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-22 03:03:15,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-22 03:03:15,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-22 03:03:15,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-22 03:03:15,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-22 03:03:15,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-22 03:03:15,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-22 03:03:15,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-22 03:03:15,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-22 03:03:15,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-11-22 03:03:15,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2024-11-22 03:03:15,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#17 [2024-11-22 03:03:15,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#18 [2024-11-22 03:03:15,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#19 [2024-11-22 03:03:15,224 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 03:03:15,224 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 03:03:15,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 03:03:15,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 03:03:15,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-22 03:03:15,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-22 03:03:15,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-22 03:03:15,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-22 03:03:15,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-22 03:03:15,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-22 03:03:15,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-22 03:03:15,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-22 03:03:15,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-22 03:03:15,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-22 03:03:15,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-22 03:03:15,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-22 03:03:15,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-11-22 03:03:15,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-11-22 03:03:15,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2024-11-22 03:03:15,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2024-11-22 03:03:15,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#16 [2024-11-22 03:03:15,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#17 [2024-11-22 03:03:15,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#18 [2024-11-22 03:03:15,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#19 [2024-11-22 03:03:15,227 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2024-11-22 03:03:15,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2024-11-22 03:03:15,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-22 03:03:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-22 03:03:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-22 03:03:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-22 03:03:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-22 03:03:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-22 03:03:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-22 03:03:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-22 03:03:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-22 03:03:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-22 03:03:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-22 03:03:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-22 03:03:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-22 03:03:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-11-22 03:03:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2024-11-22 03:03:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2024-11-22 03:03:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#16 [2024-11-22 03:03:15,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#17 [2024-11-22 03:03:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#18 [2024-11-22 03:03:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#19 [2024-11-22 03:03:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2024-11-22 03:03:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2024-11-22 03:03:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-22 03:03:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2024-11-22 03:03:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 03:03:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-22 03:03:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-22 03:03:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-22 03:03:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-22 03:03:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-22 03:03:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-22 03:03:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-22 03:03:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-22 03:03:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-22 03:03:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-11-22 03:03:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-11-22 03:03:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2024-11-22 03:03:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2024-11-22 03:03:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2024-11-22 03:03:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2024-11-22 03:03:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#15 [2024-11-22 03:03:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#16 [2024-11-22 03:03:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#17 [2024-11-22 03:03:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#18 [2024-11-22 03:03:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#19 [2024-11-22 03:03:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2024-11-22 03:03:15,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2024-11-22 03:03:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 03:03:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 03:03:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 03:03:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-22 03:03:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-22 03:03:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-22 03:03:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-22 03:03:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-22 03:03:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-22 03:03:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-22 03:03:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-22 03:03:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-22 03:03:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-22 03:03:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-22 03:03:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-22 03:03:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-22 03:03:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-22 03:03:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-22 03:03:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-22 03:03:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-22 03:03:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 03:03:15,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 03:03:15,435 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 03:03:15,437 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 03:03:16,323 INFO L? ?]: Removed 53 outVars from TransFormulas that were not future-live. [2024-11-22 03:03:16,323 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 03:03:16,339 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 03:03:16,339 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-22 03:03:16,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:03:16 BoogieIcfgContainer [2024-11-22 03:03:16,340 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 03:03:16,343 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 03:03:16,343 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 03:03:16,346 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 03:03:16,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:03:14" (1/3) ... [2024-11-22 03:03:16,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa53431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:03:16, skipping insertion in model container [2024-11-22 03:03:16,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:03:14" (2/3) ... [2024-11-22 03:03:16,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa53431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:03:16, skipping insertion in model container [2024-11-22 03:03:16,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:03:16" (3/3) ... [2024-11-22 03:03:16,349 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_lamport.i [2024-11-22 03:03:16,364 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 03:03:16,364 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 03:03:16,414 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 03:03:16,419 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;@6177af86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 03:03:16,420 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 03:03:16,433 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 74 states have (on average 1.3108108108108107) internal successors, (97), 75 states have internal predecessors, (97), 36 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-22 03:03:16,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-22 03:03:16,447 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:03:16,448 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:03:16,449 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:03:16,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:03:16,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1573742471, now seen corresponding path program 1 times [2024-11-22 03:03:16,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:03:16,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822054573] [2024-11-22 03:03:16,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:03:16,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:03:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:03:17,080 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-22 03:03:17,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:03:17,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822054573] [2024-11-22 03:03:17,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822054573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:03:17,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:03:17,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 03:03:17,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874218076] [2024-11-22 03:03:17,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:03:17,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 03:03:17,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:03:17,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 03:03:17,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 03:03:17,129 INFO L87 Difference]: Start difference. First operand has 117 states, 74 states have (on average 1.3108108108108107) internal successors, (97), 75 states have internal predecessors, (97), 36 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-22 03:03:17,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:03:17,223 INFO L93 Difference]: Finished difference Result 236 states and 378 transitions. [2024-11-22 03:03:17,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 03:03:17,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 144 [2024-11-22 03:03:17,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:03:17,236 INFO L225 Difference]: With dead ends: 236 [2024-11-22 03:03:17,236 INFO L226 Difference]: Without dead ends: 117 [2024-11-22 03:03:17,245 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 [2024-11-22 03:03:17,249 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 4 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 321 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 [2024-11-22 03:03:17,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 321 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:03:17,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-22 03:03:17,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 114. [2024-11-22 03:03:17,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 72 states have (on average 1.25) internal successors, (90), 72 states have internal predecessors, (90), 36 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-22 03:03:17,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 162 transitions. [2024-11-22 03:03:17,308 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 162 transitions. Word has length 144 [2024-11-22 03:03:17,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:03:17,308 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 162 transitions. [2024-11-22 03:03:17,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-22 03:03:17,309 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 162 transitions. [2024-11-22 03:03:17,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-22 03:03:17,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:03:17,313 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:03:17,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 03:03:17,313 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:03:17,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:03:17,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1072773259, now seen corresponding path program 1 times [2024-11-22 03:03:17,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:03:17,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337252220] [2024-11-22 03:03:17,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:03:17,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:03:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:03:17,691 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-22 03:03:17,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:03:17,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337252220] [2024-11-22 03:03:17,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337252220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:03:17,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:03:17,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 03:03:17,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122629291] [2024-11-22 03:03:17,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:03:17,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 03:03:17,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:03:17,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 03:03:17,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 03:03:17,694 INFO L87 Difference]: Start difference. First operand 114 states and 162 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-22 03:03:17,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:03:17,747 INFO L93 Difference]: Finished difference Result 227 states and 324 transitions. [2024-11-22 03:03:17,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 03:03:17,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 147 [2024-11-22 03:03:17,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:03:17,749 INFO L225 Difference]: With dead ends: 227 [2024-11-22 03:03:17,749 INFO L226 Difference]: Without dead ends: 116 [2024-11-22 03:03:17,750 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 [2024-11-22 03:03:17,751 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 1 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 315 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 [2024-11-22 03:03:17,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 315 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:03:17,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-22 03:03:17,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2024-11-22 03:03:17,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 73 states have (on average 1.2465753424657535) internal successors, (91), 73 states have internal predecessors, (91), 36 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-22 03:03:17,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 163 transitions. [2024-11-22 03:03:17,761 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 163 transitions. Word has length 147 [2024-11-22 03:03:17,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:03:17,761 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 163 transitions. [2024-11-22 03:03:17,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-22 03:03:17,762 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 163 transitions. [2024-11-22 03:03:17,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-22 03:03:17,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:03:17,764 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:03:17,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 03:03:17,764 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:03:17,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:03:17,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1028614451, now seen corresponding path program 1 times [2024-11-22 03:03:17,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:03:17,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946085822] [2024-11-22 03:03:17,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:03:17,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:03:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:03:17,973 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-22 03:03:17,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:03:17,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946085822] [2024-11-22 03:03:17,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946085822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:03:17,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654888854] [2024-11-22 03:03:17,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:03:17,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:03:17,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:03:17,976 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) [2024-11-22 03:03:17,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 03:03:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:03:18,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 03:03:18,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:03:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-22 03:03:18,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 03:03:18,684 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-22 03:03:18,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654888854] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 03:03:18,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 03:03:18,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-22 03:03:18,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956356495] [2024-11-22 03:03:18,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 03:03:18,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 03:03:18,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:03:18,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 03:03:18,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:03:18,689 INFO L87 Difference]: Start difference. First operand 115 states and 163 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 03:03:18,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:03:18,741 INFO L93 Difference]: Finished difference Result 231 states and 329 transitions. [2024-11-22 03:03:18,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 03:03:18,743 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 149 [2024-11-22 03:03:18,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:03:18,744 INFO L225 Difference]: With dead ends: 231 [2024-11-22 03:03:18,744 INFO L226 Difference]: Without dead ends: 119 [2024-11-22 03:03:18,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 295 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:03:18,746 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 1 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 03:03:18,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 471 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:03:18,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-22 03:03:18,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2024-11-22 03:03:18,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 77 states have (on average 1.2337662337662338) internal successors, (95), 77 states have internal predecessors, (95), 36 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-22 03:03:18,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 167 transitions. [2024-11-22 03:03:18,759 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 167 transitions. Word has length 149 [2024-11-22 03:03:18,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:03:18,761 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 167 transitions. [2024-11-22 03:03:18,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 03:03:18,762 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 167 transitions. [2024-11-22 03:03:18,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-22 03:03:18,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:03:18,766 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 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, 1, 1] [2024-11-22 03:03:18,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 03:03:18,967 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 [2024-11-22 03:03:18,968 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:03:18,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:03:18,969 INFO L85 PathProgramCache]: Analyzing trace with hash -829171247, now seen corresponding path program 2 times [2024-11-22 03:03:18,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:03:18,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146958821] [2024-11-22 03:03:18,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 03:03:18,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:03:19,112 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 03:03:19,114 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 03:03:19,298 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 934 trivial. 0 not checked. [2024-11-22 03:03:19,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:03:19,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146958821] [2024-11-22 03:03:19,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146958821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:03:19,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:03:19,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 03:03:19,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115139669] [2024-11-22 03:03:19,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:03:19,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 03:03:19,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:03:19,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 03:03:19,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 03:03:19,302 INFO L87 Difference]: Start difference. First operand 119 states and 167 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-22 03:03:19,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:03:19,345 INFO L93 Difference]: Finished difference Result 223 states and 320 transitions. [2024-11-22 03:03:19,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 03:03:19,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 153 [2024-11-22 03:03:19,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:03:19,348 INFO L225 Difference]: With dead ends: 223 [2024-11-22 03:03:19,348 INFO L226 Difference]: Without dead ends: 173 [2024-11-22 03:03:19,349 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 [2024-11-22 03:03:19,353 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 99 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 496 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 [2024-11-22 03:03:19,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 496 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:03:19,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-22 03:03:19,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2024-11-22 03:03:19,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 113 states have (on average 1.2743362831858407) internal successors, (144), 113 states have internal predecessors, (144), 49 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (53), 49 states have call predecessors, (53), 49 states have call successors, (53) [2024-11-22 03:03:19,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 246 transitions. [2024-11-22 03:03:19,379 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 246 transitions. Word has length 153 [2024-11-22 03:03:19,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:03:19,380 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 246 transitions. [2024-11-22 03:03:19,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-22 03:03:19,380 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 246 transitions. [2024-11-22 03:03:19,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-22 03:03:19,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:03:19,384 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:03:19,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 03:03:19,385 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:03:19,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:03:19,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1805589549, now seen corresponding path program 1 times [2024-11-22 03:03:19,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:03:19,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324734987] [2024-11-22 03:03:19,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:03:19,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:03:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:03:20,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1343 trivial. 0 not checked. [2024-11-22 03:03:20,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:03:20,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324734987] [2024-11-22 03:03:20,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324734987] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:03:20,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977747909] [2024-11-22 03:03:20,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:03:20,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:03:20,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:03:20,043 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) [2024-11-22 03:03:20,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 03:03:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:03:20,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 1546 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 03:03:20,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:03:20,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1343 trivial. 0 not checked. [2024-11-22 03:03:20,776 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 03:03:21,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1343 trivial. 0 not checked. [2024-11-22 03:03:21,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977747909] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 03:03:21,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 03:03:21,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-22 03:03:21,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719428566] [2024-11-22 03:03:21,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 03:03:21,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 03:03:21,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:03:21,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 03:03:21,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:03:21,041 INFO L87 Difference]: Start difference. First operand 173 states and 246 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2024-11-22 03:03:21,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:03:21,126 INFO L93 Difference]: Finished difference Result 352 states and 500 transitions. [2024-11-22 03:03:21,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 03:03:21,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 222 [2024-11-22 03:03:21,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:03:21,129 INFO L225 Difference]: With dead ends: 352 [2024-11-22 03:03:21,129 INFO L226 Difference]: Without dead ends: 191 [2024-11-22 03:03:21,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 441 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:03:21,131 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 4 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 03:03:21,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 626 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 03:03:21,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-22 03:03:21,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2024-11-22 03:03:21,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 131 states have (on average 1.251908396946565) internal successors, (164), 131 states have internal predecessors, (164), 49 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (53), 49 states have call predecessors, (53), 49 states have call successors, (53) [2024-11-22 03:03:21,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 266 transitions. [2024-11-22 03:03:21,146 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 266 transitions. Word has length 222 [2024-11-22 03:03:21,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:03:21,147 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 266 transitions. [2024-11-22 03:03:21,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2024-11-22 03:03:21,147 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 266 transitions. [2024-11-22 03:03:21,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-22 03:03:21,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:03:21,149 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 9, 9, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:03:21,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 03:03:21,350 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 [2024-11-22 03:03:21,351 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:03:21,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:03:21,352 INFO L85 PathProgramCache]: Analyzing trace with hash 624474195, now seen corresponding path program 2 times [2024-11-22 03:03:21,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:03:21,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936181512] [2024-11-22 03:03:21,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 03:03:21,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:03:21,498 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 03:03:21,498 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 03:03:21,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2024-11-22 03:03:21,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:03:21,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936181512] [2024-11-22 03:03:21,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936181512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:03:21,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:03:21,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 03:03:21,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478914960] [2024-11-22 03:03:21,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:03:21,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 03:03:21,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:03:21,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 03:03:21,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 03:03:21,774 INFO L87 Difference]: Start difference. First operand 191 states and 266 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-22 03:03:24,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:03:25,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:03:25,073 INFO L93 Difference]: Finished difference Result 485 states and 692 transitions. [2024-11-22 03:03:25,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 03:03:25,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 240 [2024-11-22 03:03:25,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:03:25,076 INFO L225 Difference]: With dead ends: 485 [2024-11-22 03:03:25,077 INFO L226 Difference]: Without dead ends: 341 [2024-11-22 03:03:25,077 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 [2024-11-22 03:03:25,078 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 142 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-22 03:03:25,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 667 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-22 03:03:25,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2024-11-22 03:03:25,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 337. [2024-11-22 03:03:25,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 221 states have (on average 1.257918552036199) internal successors, (278), 221 states have internal predecessors, (278), 95 states have call successors, (95), 20 states have call predecessors, (95), 20 states have return successors, (110), 95 states have call predecessors, (110), 95 states have call successors, (110) [2024-11-22 03:03:25,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 483 transitions. [2024-11-22 03:03:25,113 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 483 transitions. Word has length 240 [2024-11-22 03:03:25,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:03:25,113 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 483 transitions. [2024-11-22 03:03:25,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-22 03:03:25,114 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 483 transitions. [2024-11-22 03:03:25,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-22 03:03:25,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:03:25,116 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 9, 9, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:03:25,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 03:03:25,117 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:03:25,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:03:25,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1274905475, now seen corresponding path program 1 times [2024-11-22 03:03:25,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:03:25,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976902913] [2024-11-22 03:03:25,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:03:25,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:03:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:03:25,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2024-11-22 03:03:25,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:03:25,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976902913] [2024-11-22 03:03:25,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976902913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:03:25,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:03:25,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 03:03:25,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291605467] [2024-11-22 03:03:25,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:03:25,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 03:03:25,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:03:25,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 03:03:25,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 03:03:25,924 INFO L87 Difference]: Start difference. First operand 337 states and 483 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-22 03:03:29,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:03:29,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:03:29,743 INFO L93 Difference]: Finished difference Result 607 states and 862 transitions. [2024-11-22 03:03:29,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 03:03:29,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 240 [2024-11-22 03:03:29,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:03:29,746 INFO L225 Difference]: With dead ends: 607 [2024-11-22 03:03:29,746 INFO L226 Difference]: Without dead ends: 311 [2024-11-22 03:03:29,748 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 [2024-11-22 03:03:29,749 INFO L432 NwaCegarLoop]: 265 mSDtfsCounter, 138 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-22 03:03:29,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 671 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-22 03:03:29,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-22 03:03:29,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 307. [2024-11-22 03:03:29,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 202 states have (on average 1.2178217821782178) internal successors, (246), 202 states have internal predecessors, (246), 86 states have call successors, (86), 18 states have call predecessors, (86), 18 states have return successors, (94), 86 states have call predecessors, (94), 86 states have call successors, (94) [2024-11-22 03:03:29,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 426 transitions. [2024-11-22 03:03:29,778 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 426 transitions. Word has length 240 [2024-11-22 03:03:29,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:03:29,778 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 426 transitions. [2024-11-22 03:03:29,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-22 03:03:29,779 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 426 transitions. [2024-11-22 03:03:29,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-22 03:03:29,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:03:29,782 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 9, 9, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:03:29,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 03:03:29,783 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:03:29,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:03:29,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1231711001, now seen corresponding path program 1 times [2024-11-22 03:03:29,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:03:29,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104505772] [2024-11-22 03:03:29,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:03:29,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:03:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:03:30,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1441 trivial. 0 not checked. [2024-11-22 03:03:30,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:03:30,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104505772] [2024-11-22 03:03:30,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104505772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:03:30,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325340015] [2024-11-22 03:03:30,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:03:30,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:03:30,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:03:30,307 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) [2024-11-22 03:03:30,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 03:03:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:03:30,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 03:03:30,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:03:31,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 352 proven. 4 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2024-11-22 03:03:31,019 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 03:03:31,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1441 trivial. 0 not checked. [2024-11-22 03:03:31,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325340015] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 03:03:31,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 03:03:31,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 11 [2024-11-22 03:03:31,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114907046] [2024-11-22 03:03:31,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 03:03:31,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 03:03:31,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:03:31,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 03:03:31,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-22 03:03:31,417 INFO L87 Difference]: Start difference. First operand 307 states and 426 transitions. Second operand has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 11 states have internal predecessors, (87), 9 states have call successors, (62), 5 states have call predecessors, (62), 6 states have return successors, (63), 7 states have call predecessors, (63), 9 states have call successors, (63) [2024-11-22 03:03:35,435 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 [] [2024-11-22 03:03:36,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:03:36,337 INFO L93 Difference]: Finished difference Result 599 states and 849 transitions. [2024-11-22 03:03:36,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 03:03:36,338 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 11 states have internal predecessors, (87), 9 states have call successors, (62), 5 states have call predecessors, (62), 6 states have return successors, (63), 7 states have call predecessors, (63), 9 states have call successors, (63) Word has length 240 [2024-11-22 03:03:36,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:03:36,349 INFO L225 Difference]: With dead ends: 599 [2024-11-22 03:03:36,349 INFO L226 Difference]: Without dead ends: 329 [2024-11-22 03:03:36,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-22 03:03:36,351 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 187 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 127 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-22 03:03:36,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 472 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 304 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2024-11-22 03:03:36,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-11-22 03:03:36,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 326. [2024-11-22 03:03:36,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 220 states have (on average 1.240909090909091) internal successors, (273), 222 states have internal predecessors, (273), 77 states have call successors, (77), 26 states have call predecessors, (77), 28 states have return successors, (97), 77 states have call predecessors, (97), 77 states have call successors, (97) [2024-11-22 03:03:36,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 447 transitions. [2024-11-22 03:03:36,411 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 447 transitions. Word has length 240 [2024-11-22 03:03:36,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:03:36,412 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 447 transitions. [2024-11-22 03:03:36,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 11 states have internal predecessors, (87), 9 states have call successors, (62), 5 states have call predecessors, (62), 6 states have return successors, (63), 7 states have call predecessors, (63), 9 states have call successors, (63) [2024-11-22 03:03:36,412 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 447 transitions. [2024-11-22 03:03:36,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-22 03:03:36,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:03:36,417 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 9, 9, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:03:36,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 03:03:36,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:03:36,622 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:03:36,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:03:36,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1969115449, now seen corresponding path program 1 times [2024-11-22 03:03:36,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:03:36,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468081857] [2024-11-22 03:03:36,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:03:36,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:03:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:03:39,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1441 trivial. 0 not checked. [2024-11-22 03:03:39,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:03:39,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468081857] [2024-11-22 03:03:39,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468081857] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:03:39,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607404424] [2024-11-22 03:03:39,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:03:39,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:03:39,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:03:39,791 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) [2024-11-22 03:03:39,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 03:03:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:03:40,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-22 03:03:40,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:03:40,867 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 13 treesize of output 9 [2024-11-22 03:03:48,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 03:03:48,880 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 03:03:48,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 48 [2024-11-22 03:03:51,935 INFO L349 Elim1Store]: treesize reduction 64, result has 54.9 percent of original size [2024-11-22 03:03:51,936 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 49 treesize of output 104 [2024-11-22 03:04:13,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 397 proven. 4 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2024-11-22 03:04:13,530 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 03:04:13,963 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 [2024-11-22 03:04:13,971 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 [2024-11-22 03:04:14,556 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 [2024-11-22 03:04:14,564 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 [2024-11-22 03:04:14,649 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 [2024-11-22 03:04:14,653 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 [2024-11-22 03:04:14,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1441 trivial. 0 not checked. [2024-11-22 03:04:14,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607404424] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 03:04:14,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 03:04:14,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 9] total 38 [2024-11-22 03:04:14,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681809050] [2024-11-22 03:04:14,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 03:04:14,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-22 03:04:14,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:04:14,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-22 03:04:14,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1252, Unknown=3, NotChecked=0, Total=1406 [2024-11-22 03:04:14,768 INFO L87 Difference]: Start difference. First operand 326 states and 447 transitions. Second operand has 38 states, 35 states have (on average 4.142857142857143) internal successors, (145), 35 states have internal predecessors, (145), 19 states have call successors, (72), 12 states have call predecessors, (72), 14 states have return successors, (72), 17 states have call predecessors, (72), 19 states have call successors, (72) [2024-11-22 03:04:18,820 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 [] [2024-11-22 03:04:22,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:04:26,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:04:30,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:04:34,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:04:38,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:04:42,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 03:04:46,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []