./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1-todo/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i --full-output --preprocessor.use.memory.slicer true --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 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 ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1-todo/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash cb4cf2f7b619bb65636b8158cc0f6ae5cf90699f1f1c19bf802021a20c422d2c --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 18:04:19,114 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 18:04:19,183 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-22 18:04:19,189 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 18:04:19,190 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 18:04:19,212 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 18:04:19,212 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 18:04:19,213 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 18:04:19,213 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 18:04:19,216 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 18:04:19,217 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 18:04:19,217 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 18:04:19,218 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 18:04:19,219 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 18:04:19,219 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 18:04:19,219 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 18:04:19,219 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 18:04:19,219 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 18:04:19,220 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 18:04:19,220 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 18:04:19,220 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 18:04:19,220 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 18:04:19,221 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 18:04:19,221 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 18:04:19,221 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 18:04:19,222 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 18:04:19,222 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 18:04:19,222 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 18:04:19,222 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 18:04:19,222 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 18:04:19,223 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 18:04:19,223 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 18:04:19,223 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 18:04:19,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 18:04:19,224 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 18:04:19,224 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 18:04:19,224 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 18:04:19,224 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 18:04:19,224 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 18:04:19,225 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb4cf2f7b619bb65636b8158cc0f6ae5cf90699f1f1c19bf802021a20c422d2c Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-22 18:04:19,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 18:04:19,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 18:04:19,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 18:04:19,471 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 18:04:19,471 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 18:04:19,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1-todo/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2023-11-22 18:04:20,475 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 18:04:20,795 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 18:04:20,796 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1-todo/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2023-11-22 18:04:20,822 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e01637e5f/fa5d22a9e83f42ca9450f0d7ebda0e7b/FLAGe882edd79 [2023-11-22 18:04:20,837 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e01637e5f/fa5d22a9e83f42ca9450f0d7ebda0e7b [2023-11-22 18:04:20,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 18:04:20,841 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 18:04:20,842 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 18:04:20,842 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 18:04:20,846 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 18:04:20,847 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:04:20" (1/1) ... [2023-11-22 18:04:20,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a80692e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:04:20, skipping insertion in model container [2023-11-22 18:04:20,848 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:04:20" (1/1) ... [2023-11-22 18:04:20,920 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 18:04:21,422 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1-todo/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i[153287,153300] [2023-11-22 18:04:21,564 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 18:04:21,581 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 18:04:21,675 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1-todo/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i[153287,153300] [2023-11-22 18:04:21,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 18:04:21,756 INFO L206 MainTranslator]: Completed translation [2023-11-22 18:04:21,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:04:21 WrapperNode [2023-11-22 18:04:21,756 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 18:04:21,757 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 18:04:21,757 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 18:04:21,758 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 18:04:21,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:04:21" (1/1) ... [2023-11-22 18:04:21,793 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:04:21" (1/1) ... [2023-11-22 18:04:21,835 INFO L138 Inliner]: procedures = 82, calls = 143, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 483 [2023-11-22 18:04:21,842 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 18:04:21,842 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 18:04:21,842 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 18:04:21,843 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 18:04:21,851 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:04:21" (1/1) ... [2023-11-22 18:04:21,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:04:21" (1/1) ... [2023-11-22 18:04:21,868 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:04:21" (1/1) ... [2023-11-22 18:04:21,922 INFO L189 HeapSplitter]: Split 55 memory accesses to 10 slices as follows [2, 1, 33, 2, 0, 2, 8, 2, 5, 0] [2023-11-22 18:04:21,927 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:04:21" (1/1) ... [2023-11-22 18:04:21,928 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:04:21" (1/1) ... [2023-11-22 18:04:21,959 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:04:21" (1/1) ... [2023-11-22 18:04:21,971 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:04:21" (1/1) ... [2023-11-22 18:04:21,978 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:04:21" (1/1) ... [2023-11-22 18:04:21,996 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:04:21" (1/1) ... [2023-11-22 18:04:22,006 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 18:04:22,014 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 18:04:22,014 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 18:04:22,014 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 18:04:22,015 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:04:21" (1/1) ... [2023-11-22 18:04:22,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 18:04:22,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:04:22,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 18:04:22,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 18:04:22,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 18:04:22,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2023-11-22 18:04:22,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2023-11-22 18:04:22,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2023-11-22 18:04:22,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2023-11-22 18:04:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2023-11-22 18:04:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2023-11-22 18:04:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2023-11-22 18:04:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2023-11-22 18:04:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2023-11-22 18:04:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2023-11-22 18:04:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 18:04:22,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-22 18:04:22,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-22 18:04:22,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-22 18:04:22,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-22 18:04:22,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-22 18:04:22,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-22 18:04:22,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-22 18:04:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-22 18:04:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-22 18:04:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2023-11-22 18:04:22,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2023-11-22 18:04:22,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2023-11-22 18:04:22,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2023-11-22 18:04:22,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2023-11-22 18:04:22,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2023-11-22 18:04:22,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2023-11-22 18:04:22,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#6 [2023-11-22 18:04:22,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#7 [2023-11-22 18:04:22,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#8 [2023-11-22 18:04:22,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#9 [2023-11-22 18:04:22,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2023-11-22 18:04:22,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2023-11-22 18:04:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2023-11-22 18:04:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2023-11-22 18:04:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2023-11-22 18:04:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2023-11-22 18:04:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2023-11-22 18:04:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2023-11-22 18:04:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2023-11-22 18:04:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2023-11-22 18:04:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-22 18:04:22,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-22 18:04:22,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-22 18:04:22,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-22 18:04:22,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-22 18:04:22,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-22 18:04:22,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-22 18:04:22,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-22 18:04:22,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-22 18:04:22,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-22 18:04:22,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-22 18:04:22,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-22 18:04:22,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-22 18:04:22,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-22 18:04:22,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-22 18:04:22,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-22 18:04:22,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-22 18:04:22,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-22 18:04:22,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-22 18:04:22,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-22 18:04:22,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-22 18:04:22,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2023-11-22 18:04:22,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2023-11-22 18:04:22,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2023-11-22 18:04:22,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#0 [2023-11-22 18:04:22,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#1 [2023-11-22 18:04:22,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#2 [2023-11-22 18:04:22,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#3 [2023-11-22 18:04:22,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#4 [2023-11-22 18:04:22,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#5 [2023-11-22 18:04:22,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#6 [2023-11-22 18:04:22,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#7 [2023-11-22 18:04:22,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#8 [2023-11-22 18:04:22,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#9 [2023-11-22 18:04:22,118 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#0 [2023-11-22 18:04:22,118 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#1 [2023-11-22 18:04:22,119 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#2 [2023-11-22 18:04:22,119 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#3 [2023-11-22 18:04:22,119 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#4 [2023-11-22 18:04:22,119 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#5 [2023-11-22 18:04:22,119 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#6 [2023-11-22 18:04:22,119 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#7 [2023-11-22 18:04:22,120 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#8 [2023-11-22 18:04:22,120 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#9 [2023-11-22 18:04:22,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-22 18:04:22,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-22 18:04:22,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 18:04:22,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-22 18:04:22,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-22 18:04:22,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-22 18:04:22,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-22 18:04:22,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-22 18:04:22,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-22 18:04:22,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-22 18:04:22,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-22 18:04:22,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-22 18:04:22,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2023-11-22 18:04:22,122 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2023-11-22 18:04:22,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2023-11-22 18:04:22,122 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-22 18:04:22,122 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-22 18:04:22,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-22 18:04:22,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-22 18:04:22,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-22 18:04:22,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-22 18:04:22,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-22 18:04:22,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-22 18:04:22,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-22 18:04:22,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-22 18:04:22,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-22 18:04:22,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-22 18:04:22,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-22 18:04:22,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-22 18:04:22,125 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-22 18:04:22,125 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-22 18:04:22,125 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-22 18:04:22,125 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-22 18:04:22,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 18:04:22,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-22 18:04:22,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-22 18:04:22,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-22 18:04:22,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-22 18:04:22,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-22 18:04:22,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-22 18:04:22,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-22 18:04:22,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-22 18:04:22,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-22 18:04:22,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-22 18:04:22,127 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2023-11-22 18:04:22,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2023-11-22 18:04:22,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2023-11-22 18:04:22,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2023-11-22 18:04:22,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2023-11-22 18:04:22,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2023-11-22 18:04:22,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2023-11-22 18:04:22,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2023-11-22 18:04:22,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#6 [2023-11-22 18:04:22,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#7 [2023-11-22 18:04:22,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#8 [2023-11-22 18:04:22,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#9 [2023-11-22 18:04:22,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-22 18:04:22,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-22 18:04:22,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 18:04:22,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 18:04:22,378 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 18:04:22,380 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 18:04:22,402 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-22 18:04:23,087 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 18:04:23,157 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 18:04:23,158 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-22 18:04:23,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:04:23 BoogieIcfgContainer [2023-11-22 18:04:23,159 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 18:04:23,160 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 18:04:23,161 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 18:04:23,163 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 18:04:23,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 06:04:20" (1/3) ... [2023-11-22 18:04:23,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5108f989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:04:23, skipping insertion in model container [2023-11-22 18:04:23,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:04:21" (2/3) ... [2023-11-22 18:04:23,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5108f989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:04:23, skipping insertion in model container [2023-11-22 18:04:23,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:04:23" (3/3) ... [2023-11-22 18:04:23,171 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2023-11-22 18:04:23,184 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 18:04:23,185 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 18:04:23,219 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 18:04:23,224 INFO L357 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, mHoare=true, 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;@6d337e98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 18:04:23,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 18:04:23,227 INFO L276 IsEmpty]: Start isEmpty. Operand has 146 states, 109 states have (on average 1.5229357798165137) internal successors, (166), 114 states have internal predecessors, (166), 25 states have call successors, (25), 11 states have call predecessors, (25), 10 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-22 18:04:23,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-22 18:04:23,233 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:04:23,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:04:23,234 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:04:23,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:04:23,238 INFO L85 PathProgramCache]: Analyzing trace with hash 275293622, now seen corresponding path program 1 times [2023-11-22 18:04:23,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:04:23,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463947935] [2023-11-22 18:04:23,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:04:23,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:04:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:23,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:04:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:23,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:04:23,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:04:23,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463947935] [2023-11-22 18:04:23,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463947935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:04:23,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:04:23,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 18:04:23,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896200831] [2023-11-22 18:04:23,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:04:23,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:04:23,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:04:23,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:04:23,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 18:04:23,735 INFO L87 Difference]: Start difference. First operand has 146 states, 109 states have (on average 1.5229357798165137) internal successors, (166), 114 states have internal predecessors, (166), 25 states have call successors, (25), 11 states have call predecessors, (25), 10 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-22 18:04:24,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:04:24,178 INFO L93 Difference]: Finished difference Result 453 states and 695 transitions. [2023-11-22 18:04:24,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:04:24,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-11-22 18:04:24,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:04:24,188 INFO L225 Difference]: With dead ends: 453 [2023-11-22 18:04:24,188 INFO L226 Difference]: Without dead ends: 299 [2023-11-22 18:04:24,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:04:24,193 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 263 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:04:24,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 375 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 18:04:24,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-11-22 18:04:24,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 257. [2023-11-22 18:04:24,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 199 states have (on average 1.4120603015075377) internal successors, (281), 199 states have internal predecessors, (281), 39 states have call successors, (39), 19 states have call predecessors, (39), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-22 18:04:24,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 358 transitions. [2023-11-22 18:04:24,239 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 358 transitions. Word has length 18 [2023-11-22 18:04:24,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:04:24,240 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 358 transitions. [2023-11-22 18:04:24,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-22 18:04:24,240 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 358 transitions. [2023-11-22 18:04:24,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-22 18:04:24,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:04:24,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:04:24,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 18:04:24,242 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:04:24,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:04:24,243 INFO L85 PathProgramCache]: Analyzing trace with hash -354957720, now seen corresponding path program 1 times [2023-11-22 18:04:24,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:04:24,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20250610] [2023-11-22 18:04:24,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:04:24,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:04:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:24,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:04:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:24,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:04:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:24,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:04:24,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:04:24,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20250610] [2023-11-22 18:04:24,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20250610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:04:24,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:04:24,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 18:04:24,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851574494] [2023-11-22 18:04:24,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:04:24,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:04:24,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:04:24,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:04:24,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 18:04:24,369 INFO L87 Difference]: Start difference. First operand 257 states and 358 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 18:04:24,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:04:24,621 INFO L93 Difference]: Finished difference Result 555 states and 780 transitions. [2023-11-22 18:04:24,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 18:04:24,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2023-11-22 18:04:24,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:04:24,629 INFO L225 Difference]: With dead ends: 555 [2023-11-22 18:04:24,629 INFO L226 Difference]: Without dead ends: 302 [2023-11-22 18:04:24,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 18:04:24,638 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 43 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:04:24,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 363 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 18:04:24,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-11-22 18:04:24,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 258. [2023-11-22 18:04:24,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 200 states have (on average 1.41) internal successors, (282), 200 states have internal predecessors, (282), 39 states have call successors, (39), 19 states have call predecessors, (39), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-22 18:04:24,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 359 transitions. [2023-11-22 18:04:24,674 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 359 transitions. Word has length 28 [2023-11-22 18:04:24,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:04:24,674 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 359 transitions. [2023-11-22 18:04:24,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 18:04:24,675 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 359 transitions. [2023-11-22 18:04:24,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-22 18:04:24,680 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:04:24,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:04:24,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 18:04:24,681 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:04:24,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:04:24,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1279910342, now seen corresponding path program 1 times [2023-11-22 18:04:24,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:04:24,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059550916] [2023-11-22 18:04:24,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:04:24,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:04:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:24,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:04:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:24,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:04:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:24,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:04:24,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:04:24,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059550916] [2023-11-22 18:04:24,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059550916] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:04:24,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316242529] [2023-11-22 18:04:24,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:04:24,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:04:24,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:04:24,843 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) [2023-11-22 18:04:24,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 18:04:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:25,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:04:25,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:04:25,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:04:25,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:04:25,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:04:25,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316242529] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:04:25,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:04:25,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-11-22 18:04:25,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207525270] [2023-11-22 18:04:25,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:04:25,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 18:04:25,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:04:25,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 18:04:25,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:04:25,157 INFO L87 Difference]: Start difference. First operand 258 states and 359 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 18:04:25,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:04:25,515 INFO L93 Difference]: Finished difference Result 563 states and 792 transitions. [2023-11-22 18:04:25,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:04:25,515 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2023-11-22 18:04:25,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:04:25,517 INFO L225 Difference]: With dead ends: 563 [2023-11-22 18:04:25,517 INFO L226 Difference]: Without dead ends: 309 [2023-11-22 18:04:25,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:04:25,519 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 49 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:04:25,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 618 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 18:04:25,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-11-22 18:04:25,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 267. [2023-11-22 18:04:25,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 209 states have (on average 1.4066985645933014) internal successors, (294), 209 states have internal predecessors, (294), 39 states have call successors, (39), 19 states have call predecessors, (39), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-22 18:04:25,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 371 transitions. [2023-11-22 18:04:25,533 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 371 transitions. Word has length 31 [2023-11-22 18:04:25,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:04:25,533 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 371 transitions. [2023-11-22 18:04:25,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 18:04:25,533 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 371 transitions. [2023-11-22 18:04:25,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-22 18:04:25,534 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:04:25,535 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:04:25,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-22 18:04:25,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:04:25,748 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:04:25,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:04:25,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1937247464, now seen corresponding path program 2 times [2023-11-22 18:04:25,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:04:25,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416929013] [2023-11-22 18:04:25,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:04:25,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:04:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:25,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:04:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:25,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:04:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:25,926 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-22 18:04:25,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:04:25,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416929013] [2023-11-22 18:04:25,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416929013] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:04:25,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:04:25,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 18:04:25,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346944921] [2023-11-22 18:04:25,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:04:25,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:04:25,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:04:25,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:04:25,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 18:04:25,928 INFO L87 Difference]: Start difference. First operand 267 states and 371 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 18:04:26,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:04:26,152 INFO L93 Difference]: Finished difference Result 571 states and 799 transitions. [2023-11-22 18:04:26,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 18:04:26,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 40 [2023-11-22 18:04:26,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:04:26,154 INFO L225 Difference]: With dead ends: 571 [2023-11-22 18:04:26,154 INFO L226 Difference]: Without dead ends: 308 [2023-11-22 18:04:26,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:04:26,155 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 243 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:04:26,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 231 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 18:04:26,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-22 18:04:26,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 266. [2023-11-22 18:04:26,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 208 states have (on average 1.3942307692307692) internal successors, (290), 208 states have internal predecessors, (290), 39 states have call successors, (39), 19 states have call predecessors, (39), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-22 18:04:26,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 367 transitions. [2023-11-22 18:04:26,168 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 367 transitions. Word has length 40 [2023-11-22 18:04:26,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:04:26,169 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 367 transitions. [2023-11-22 18:04:26,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 18:04:26,169 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 367 transitions. [2023-11-22 18:04:26,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-22 18:04:26,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:04:26,170 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:04:26,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-22 18:04:26,171 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:04:26,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:04:26,171 INFO L85 PathProgramCache]: Analyzing trace with hash -365978726, now seen corresponding path program 1 times [2023-11-22 18:04:26,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:04:26,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300327658] [2023-11-22 18:04:26,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:04:26,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:04:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:26,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:04:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:26,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:04:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:26,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-22 18:04:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:26,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 18:04:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:26,318 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-22 18:04:26,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:04:26,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300327658] [2023-11-22 18:04:26,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300327658] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:04:26,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075186682] [2023-11-22 18:04:26,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:04:26,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:04:26,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:04:26,330 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) [2023-11-22 18:04:26,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 18:04:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:26,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 18:04:26,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:04:26,560 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-22 18:04:26,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:04:26,617 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-22 18:04:26,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075186682] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:04:26,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:04:26,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2023-11-22 18:04:26,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769056179] [2023-11-22 18:04:26,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:04:26,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-22 18:04:26,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:04:26,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-22 18:04:26,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2023-11-22 18:04:26,619 INFO L87 Difference]: Start difference. First operand 266 states and 367 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 18:04:26,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:04:26,917 INFO L93 Difference]: Finished difference Result 473 states and 663 transitions. [2023-11-22 18:04:26,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-22 18:04:26,918 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 58 [2023-11-22 18:04:26,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:04:26,919 INFO L225 Difference]: With dead ends: 473 [2023-11-22 18:04:26,919 INFO L226 Difference]: Without dead ends: 326 [2023-11-22 18:04:26,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2023-11-22 18:04:26,920 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 70 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:04:26,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 489 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 18:04:26,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-11-22 18:04:26,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 284. [2023-11-22 18:04:26,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 226 states have (on average 1.3893805309734513) internal successors, (314), 226 states have internal predecessors, (314), 39 states have call successors, (39), 19 states have call predecessors, (39), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-22 18:04:26,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 391 transitions. [2023-11-22 18:04:26,931 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 391 transitions. Word has length 58 [2023-11-22 18:04:26,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:04:26,932 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 391 transitions. [2023-11-22 18:04:26,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 18:04:26,932 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 391 transitions. [2023-11-22 18:04:26,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-22 18:04:26,933 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:04:26,933 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:04:26,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-22 18:04:27,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:04:27,146 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:04:27,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:04:27,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1128287578, now seen corresponding path program 2 times [2023-11-22 18:04:27,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:04:27,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100367856] [2023-11-22 18:04:27,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:04:27,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:04:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:27,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:04:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:27,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:04:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:27,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:04:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:27,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 18:04:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:27,547 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 5 proven. 145 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-22 18:04:27,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:04:27,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100367856] [2023-11-22 18:04:27,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100367856] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:04:27,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859540434] [2023-11-22 18:04:27,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 18:04:27,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:04:27,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:04:27,549 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) [2023-11-22 18:04:27,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 18:04:27,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 18:04:27,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:04:27,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 18:04:27,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:04:27,842 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 13 proven. 145 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-22 18:04:27,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:04:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 5 proven. 145 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-22 18:04:28,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859540434] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:04:28,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:04:28,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 26 [2023-11-22 18:04:28,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169154285] [2023-11-22 18:04:28,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:04:28,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-22 18:04:28,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:04:28,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-22 18:04:28,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2023-11-22 18:04:28,053 INFO L87 Difference]: Start difference. First operand 284 states and 391 transitions. Second operand has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 25 states have internal predecessors, (101), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 18:04:28,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:04:28,451 INFO L93 Difference]: Finished difference Result 527 states and 741 transitions. [2023-11-22 18:04:28,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-22 18:04:28,452 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 25 states have internal predecessors, (101), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2023-11-22 18:04:28,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:04:28,453 INFO L225 Difference]: With dead ends: 527 [2023-11-22 18:04:28,453 INFO L226 Difference]: Without dead ends: 362 [2023-11-22 18:04:28,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2023-11-22 18:04:28,454 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 107 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:04:28,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 749 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 18:04:28,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-11-22 18:04:28,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 320. [2023-11-22 18:04:28,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 262 states have (on average 1.381679389312977) internal successors, (362), 262 states have internal predecessors, (362), 39 states have call successors, (39), 19 states have call predecessors, (39), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-22 18:04:28,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 439 transitions. [2023-11-22 18:04:28,473 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 439 transitions. Word has length 76 [2023-11-22 18:04:28,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:04:28,474 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 439 transitions. [2023-11-22 18:04:28,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 25 states have internal predecessors, (101), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 18:04:28,474 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 439 transitions. [2023-11-22 18:04:28,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-22 18:04:28,475 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:04:28,475 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:04:28,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-22 18:04:28,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:04:28,689 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:04:28,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:04:28,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1574625498, now seen corresponding path program 3 times [2023-11-22 18:04:28,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:04:28,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856756244] [2023-11-22 18:04:28,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:04:28,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:04:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:29,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:04:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:29,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:04:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:29,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 18:04:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:29,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 18:04:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:29,508 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 5 proven. 715 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-22 18:04:29,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:04:29,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856756244] [2023-11-22 18:04:29,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856756244] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:04:29,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315800033] [2023-11-22 18:04:29,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 18:04:29,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:04:29,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:04:29,510 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) [2023-11-22 18:04:29,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 18:04:29,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-22 18:04:29,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:04:29,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-22 18:04:29,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:04:29,856 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2023-11-22 18:04:29,857 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:04:29,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315800033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:04:29,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:04:29,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [26] total 28 [2023-11-22 18:04:29,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568787113] [2023-11-22 18:04:29,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:04:29,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:04:29,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:04:29,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:04:29,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=450, Unknown=0, NotChecked=0, Total=756 [2023-11-22 18:04:29,859 INFO L87 Difference]: Start difference. First operand 320 states and 439 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-22 18:04:29,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:04:29,950 INFO L93 Difference]: Finished difference Result 949 states and 1309 transitions. [2023-11-22 18:04:29,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 18:04:29,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 112 [2023-11-22 18:04:29,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:04:29,952 INFO L225 Difference]: With dead ends: 949 [2023-11-22 18:04:29,952 INFO L226 Difference]: Without dead ends: 631 [2023-11-22 18:04:29,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=310, Invalid=502, Unknown=0, NotChecked=0, Total=812 [2023-11-22 18:04:29,954 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 154 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:04:29,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 515 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:04:29,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2023-11-22 18:04:29,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 625. [2023-11-22 18:04:29,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 512 states have (on average 1.37890625) internal successors, (706), 512 states have internal predecessors, (706), 76 states have call successors, (76), 37 states have call predecessors, (76), 36 states have return successors, (79), 75 states have call predecessors, (79), 75 states have call successors, (79) [2023-11-22 18:04:29,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 861 transitions. [2023-11-22 18:04:29,980 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 861 transitions. Word has length 112 [2023-11-22 18:04:29,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:04:29,980 INFO L495 AbstractCegarLoop]: Abstraction has 625 states and 861 transitions. [2023-11-22 18:04:29,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-22 18:04:29,980 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 861 transitions. [2023-11-22 18:04:29,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-22 18:04:29,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:04:29,982 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 4, 4, 4, 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] [2023-11-22 18:04:30,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-22 18:04:30,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:04:30,209 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:04:30,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:04:30,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1416157804, now seen corresponding path program 1 times [2023-11-22 18:04:30,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:04:30,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291764340] [2023-11-22 18:04:30,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:04:30,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:04:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:30,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:04:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:30,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:04:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:30,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 18:04:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:30,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:04:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:30,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 18:04:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:30,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-22 18:04:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:30,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 18:04:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:30,494 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2023-11-22 18:04:30,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:04:30,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291764340] [2023-11-22 18:04:30,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291764340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:04:30,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:04:30,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:04:30,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131474710] [2023-11-22 18:04:30,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:04:30,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:04:30,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:04:30,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:04:30,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:04:30,496 INFO L87 Difference]: Start difference. First operand 625 states and 861 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 18:04:31,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:04:31,083 INFO L93 Difference]: Finished difference Result 1262 states and 1732 transitions. [2023-11-22 18:04:31,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:04:31,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2023-11-22 18:04:31,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:04:31,086 INFO L225 Difference]: With dead ends: 1262 [2023-11-22 18:04:31,086 INFO L226 Difference]: Without dead ends: 641 [2023-11-22 18:04:31,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:04:31,088 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 95 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 18:04:31,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 430 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 18:04:31,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-11-22 18:04:31,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 460. [2023-11-22 18:04:31,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 391 states have (on average 1.3734015345268542) internal successors, (537), 393 states have internal predecessors, (537), 43 states have call successors, (43), 23 states have call predecessors, (43), 25 states have return successors, (49), 43 states have call predecessors, (49), 42 states have call successors, (49) [2023-11-22 18:04:31,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 629 transitions. [2023-11-22 18:04:31,106 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 629 transitions. Word has length 147 [2023-11-22 18:04:31,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:04:31,106 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 629 transitions. [2023-11-22 18:04:31,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 18:04:31,107 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 629 transitions. [2023-11-22 18:04:31,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-22 18:04:31,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:04:31,108 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 4, 4, 4, 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] [2023-11-22 18:04:31,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-22 18:04:31,108 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:04:31,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:04:31,109 INFO L85 PathProgramCache]: Analyzing trace with hash 870100556, now seen corresponding path program 2 times [2023-11-22 18:04:31,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:04:31,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799568424] [2023-11-22 18:04:31,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:04:31,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:04:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:31,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:04:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:31,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:04:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:31,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 18:04:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:31,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 18:04:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:31,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-22 18:04:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:31,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 18:04:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:31,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:04:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:31,605 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2023-11-22 18:04:31,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:04:31,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799568424] [2023-11-22 18:04:31,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799568424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:04:31,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:04:31,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 18:04:31,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206924082] [2023-11-22 18:04:31,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:04:31,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 18:04:31,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:04:31,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 18:04:31,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:04:31,608 INFO L87 Difference]: Start difference. First operand 460 states and 629 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 18:04:32,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:04:32,268 INFO L93 Difference]: Finished difference Result 915 states and 1263 transitions. [2023-11-22 18:04:32,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 18:04:32,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 147 [2023-11-22 18:04:32,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:04:32,286 INFO L225 Difference]: With dead ends: 915 [2023-11-22 18:04:32,286 INFO L226 Difference]: Without dead ends: 482 [2023-11-22 18:04:32,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:04:32,288 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 67 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:04:32,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 598 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 18:04:32,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-11-22 18:04:32,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 459. [2023-11-22 18:04:32,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 389 states have (on average 1.365038560411311) internal successors, (531), 391 states have internal predecessors, (531), 43 states have call successors, (43), 23 states have call predecessors, (43), 26 states have return successors, (52), 44 states have call predecessors, (52), 42 states have call successors, (52) [2023-11-22 18:04:32,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 626 transitions. [2023-11-22 18:04:32,306 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 626 transitions. Word has length 147 [2023-11-22 18:04:32,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:04:32,306 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 626 transitions. [2023-11-22 18:04:32,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 18:04:32,306 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 626 transitions. [2023-11-22 18:04:32,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-22 18:04:32,308 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:04:32,309 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 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] [2023-11-22 18:04:32,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-22 18:04:32,309 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:04:32,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:04:32,309 INFO L85 PathProgramCache]: Analyzing trace with hash -853647844, now seen corresponding path program 1 times [2023-11-22 18:04:32,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:04:32,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357143920] [2023-11-22 18:04:32,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:04:32,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:04:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:32,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:04:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:32,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:04:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:32,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 18:04:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:32,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 18:04:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:32,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-22 18:04:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:32,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 18:04:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:32,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:04:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:33,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:04:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:33,006 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2023-11-22 18:04:33,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:04:33,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357143920] [2023-11-22 18:04:33,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357143920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:04:33,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:04:33,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-22 18:04:33,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831999531] [2023-11-22 18:04:33,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:04:33,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-22 18:04:33,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:04:33,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-22 18:04:33,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-22 18:04:33,008 INFO L87 Difference]: Start difference. First operand 459 states and 626 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-22 18:04:33,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:04:33,529 INFO L93 Difference]: Finished difference Result 920 states and 1268 transitions. [2023-11-22 18:04:33,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 18:04:33,530 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 153 [2023-11-22 18:04:33,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:04:33,531 INFO L225 Difference]: With dead ends: 920 [2023-11-22 18:04:33,532 INFO L226 Difference]: Without dead ends: 488 [2023-11-22 18:04:33,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-22 18:04:33,533 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 74 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 18:04:33,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1116 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 18:04:33,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-11-22 18:04:33,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 465. [2023-11-22 18:04:33,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 394 states have (on average 1.3553299492385786) internal successors, (534), 395 states have internal predecessors, (534), 43 states have call successors, (43), 23 states have call predecessors, (43), 27 states have return successors, (53), 46 states have call predecessors, (53), 42 states have call successors, (53) [2023-11-22 18:04:33,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 630 transitions. [2023-11-22 18:04:33,551 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 630 transitions. Word has length 153 [2023-11-22 18:04:33,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:04:33,551 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 630 transitions. [2023-11-22 18:04:33,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-22 18:04:33,552 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 630 transitions. [2023-11-22 18:04:33,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-22 18:04:33,553 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:04:33,553 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 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] [2023-11-22 18:04:33,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-22 18:04:33,553 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:04:33,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:04:33,553 INFO L85 PathProgramCache]: Analyzing trace with hash 362791113, now seen corresponding path program 1 times [2023-11-22 18:04:33,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:04:33,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084154117] [2023-11-22 18:04:33,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:04:33,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:04:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:34,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:04:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:34,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:04:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:34,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 18:04:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:34,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 18:04:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:34,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-22 18:04:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:34,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 18:04:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:34,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:04:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:34,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:04:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:34,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-22 18:04:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:34,529 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 7 proven. 715 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-22 18:04:34,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:04:34,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084154117] [2023-11-22 18:04:34,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084154117] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:04:34,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298394802] [2023-11-22 18:04:34,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:04:34,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:04:34,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:04:34,531 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:04:34,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-22 18:04:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:34,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 1203 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-22 18:04:34,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:04:34,977 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 19 proven. 715 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 18:04:34,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:04:35,669 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 7 proven. 715 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-22 18:04:35,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298394802] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:04:35,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:04:35,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 25] total 52 [2023-11-22 18:04:35,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17162016] [2023-11-22 18:04:35,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:04:35,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-22 18:04:35,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:04:35,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-22 18:04:35,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1185, Invalid=1467, Unknown=0, NotChecked=0, Total=2652 [2023-11-22 18:04:35,672 INFO L87 Difference]: Start difference. First operand 465 states and 630 transitions. Second operand has 52 states, 52 states have (on average 4.346153846153846) internal successors, (226), 49 states have internal predecessors, (226), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-22 18:04:36,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:04:36,388 INFO L93 Difference]: Finished difference Result 1064 states and 1496 transitions. [2023-11-22 18:04:36,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-22 18:04:36,389 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.346153846153846) internal successors, (226), 49 states have internal predecessors, (226), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 159 [2023-11-22 18:04:36,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:04:36,391 INFO L225 Difference]: With dead ends: 1064 [2023-11-22 18:04:36,391 INFO L226 Difference]: Without dead ends: 626 [2023-11-22 18:04:36,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1185, Invalid=1467, Unknown=0, NotChecked=0, Total=2652 [2023-11-22 18:04:36,392 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 185 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 18:04:36,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 1049 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 18:04:36,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-11-22 18:04:36,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 609. [2023-11-22 18:04:36,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 538 states have (on average 1.3494423791821561) internal successors, (726), 539 states have internal predecessors, (726), 43 states have call successors, (43), 23 states have call predecessors, (43), 27 states have return successors, (53), 46 states have call predecessors, (53), 42 states have call successors, (53) [2023-11-22 18:04:36,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 822 transitions. [2023-11-22 18:04:36,411 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 822 transitions. Word has length 159 [2023-11-22 18:04:36,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:04:36,411 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 822 transitions. [2023-11-22 18:04:36,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 4.346153846153846) internal successors, (226), 49 states have internal predecessors, (226), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-22 18:04:36,411 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 822 transitions. [2023-11-22 18:04:36,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-11-22 18:04:36,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:04:36,414 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 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] [2023-11-22 18:04:36,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-22 18:04:36,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-22 18:04:36,626 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:04:36,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:04:36,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1718024649, now seen corresponding path program 2 times [2023-11-22 18:04:36,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:04:36,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343076213] [2023-11-22 18:04:36,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:04:36,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:04:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:38,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:04:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:38,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:04:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:38,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-22 18:04:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:38,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 18:04:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:38,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-22 18:04:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:39,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-11-22 18:04:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:39,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:04:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:39,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:04:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:39,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-11-22 18:04:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:39,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3184 backedges. 7 proven. 3151 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-22 18:04:39,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:04:39,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343076213] [2023-11-22 18:04:39,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343076213] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:04:39,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516047909] [2023-11-22 18:04:39,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 18:04:39,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:04:39,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:04:39,089 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:04:39,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-22 18:04:39,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 18:04:39,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:04:39,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-22 18:04:39,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:04:39,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3184 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3171 trivial. 0 not checked. [2023-11-22 18:04:39,818 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:04:39,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516047909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:04:39,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:04:39,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [52] total 63 [2023-11-22 18:04:39,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514473445] [2023-11-22 18:04:39,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:04:39,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-22 18:04:39,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:04:39,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-22 18:04:39,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1208, Invalid=2698, Unknown=0, NotChecked=0, Total=3906 [2023-11-22 18:04:39,822 INFO L87 Difference]: Start difference. First operand 609 states and 822 transitions. Second operand has 13 states, 12 states have (on average 5.75) internal successors, (69), 10 states have internal predecessors, (69), 4 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 18:04:40,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:04:40,177 INFO L93 Difference]: Finished difference Result 1229 states and 1669 transitions. [2023-11-22 18:04:40,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-22 18:04:40,178 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.75) internal successors, (69), 10 states have internal predecessors, (69), 4 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 231 [2023-11-22 18:04:40,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:04:40,180 INFO L225 Difference]: With dead ends: 1229 [2023-11-22 18:04:40,180 INFO L226 Difference]: Without dead ends: 647 [2023-11-22 18:04:40,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1221, Invalid=3069, Unknown=0, NotChecked=0, Total=4290 [2023-11-22 18:04:40,182 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 21 mSDsluCounter, 2038 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2228 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:04:40,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2228 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 18:04:40,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2023-11-22 18:04:40,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 617. [2023-11-22 18:04:40,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 544 states have (on average 1.3455882352941178) internal successors, (732), 545 states have internal predecessors, (732), 45 states have call successors, (45), 23 states have call predecessors, (45), 27 states have return successors, (55), 48 states have call predecessors, (55), 44 states have call successors, (55) [2023-11-22 18:04:40,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 832 transitions. [2023-11-22 18:04:40,205 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 832 transitions. Word has length 231 [2023-11-22 18:04:40,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:04:40,206 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 832 transitions. [2023-11-22 18:04:40,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.75) internal successors, (69), 10 states have internal predecessors, (69), 4 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 18:04:40,206 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 832 transitions. [2023-11-22 18:04:40,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-11-22 18:04:40,208 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:04:40,208 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 4, 4, 4, 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] [2023-11-22 18:04:40,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-22 18:04:40,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:04:40,420 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:04:40,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:04:40,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1280549609, now seen corresponding path program 1 times [2023-11-22 18:04:40,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:04:40,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835343833] [2023-11-22 18:04:40,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:04:40,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:04:40,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:40,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:04:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:40,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:04:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:40,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-22 18:04:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:40,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 18:04:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:40,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-22 18:04:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:40,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-11-22 18:04:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:40,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:04:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:40,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-11-22 18:04:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:40,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-11-22 18:04:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:40,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-11-22 18:04:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:40,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3184 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3177 trivial. 0 not checked. [2023-11-22 18:04:40,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:04:40,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835343833] [2023-11-22 18:04:40,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835343833] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:04:40,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:04:40,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 18:04:40,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045275834] [2023-11-22 18:04:40,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:04:40,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 18:04:40,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:04:40,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 18:04:40,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:04:40,865 INFO L87 Difference]: Start difference. First operand 617 states and 832 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-22 18:04:41,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:04:41,298 INFO L93 Difference]: Finished difference Result 936 states and 1274 transitions. [2023-11-22 18:04:41,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 18:04:41,299 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 239 [2023-11-22 18:04:41,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:04:41,301 INFO L225 Difference]: With dead ends: 936 [2023-11-22 18:04:41,301 INFO L226 Difference]: Without dead ends: 636 [2023-11-22 18:04:41,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-11-22 18:04:41,304 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 195 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:04:41,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 451 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 18:04:41,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2023-11-22 18:04:41,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 619. [2023-11-22 18:04:41,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 546 states have (on average 1.3443223443223444) internal successors, (734), 547 states have internal predecessors, (734), 45 states have call successors, (45), 23 states have call predecessors, (45), 27 states have return successors, (55), 48 states have call predecessors, (55), 44 states have call successors, (55) [2023-11-22 18:04:41,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 834 transitions. [2023-11-22 18:04:41,323 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 834 transitions. Word has length 239 [2023-11-22 18:04:41,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:04:41,323 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 834 transitions. [2023-11-22 18:04:41,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-22 18:04:41,323 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 834 transitions. [2023-11-22 18:04:41,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-22 18:04:41,325 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:04:41,325 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 4, 4, 4, 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] [2023-11-22 18:04:41,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-22 18:04:41,326 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:04:41,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:04:41,326 INFO L85 PathProgramCache]: Analyzing trace with hash -324110532, now seen corresponding path program 1 times [2023-11-22 18:04:41,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:04:41,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37376301] [2023-11-22 18:04:41,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:04:41,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:04:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:41,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:04:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:41,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:04:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:41,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-22 18:04:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:41,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 18:04:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:41,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-22 18:04:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:41,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-11-22 18:04:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:41,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:04:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:41,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-11-22 18:04:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:41,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-11-22 18:04:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:42,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-11-22 18:04:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:42,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3184 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3177 trivial. 0 not checked. [2023-11-22 18:04:42,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:04:42,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37376301] [2023-11-22 18:04:42,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37376301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:04:42,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:04:42,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-22 18:04:42,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617489482] [2023-11-22 18:04:42,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:04:42,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-22 18:04:42,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:04:42,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-22 18:04:42,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-22 18:04:42,130 INFO L87 Difference]: Start difference. First operand 619 states and 834 transitions. Second operand has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (11), 7 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 18:04:43,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:04:43,526 INFO L93 Difference]: Finished difference Result 1237 states and 1674 transitions. [2023-11-22 18:04:43,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-22 18:04:43,527 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (11), 7 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 240 [2023-11-22 18:04:43,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:04:43,529 INFO L225 Difference]: With dead ends: 1237 [2023-11-22 18:04:43,529 INFO L226 Difference]: Without dead ends: 645 [2023-11-22 18:04:43,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2023-11-22 18:04:43,530 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 327 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 18:04:43,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 890 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 18:04:43,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2023-11-22 18:04:43,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 618. [2023-11-22 18:04:43,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 545 states have (on average 1.3394495412844036) internal successors, (730), 546 states have internal predecessors, (730), 45 states have call successors, (45), 23 states have call predecessors, (45), 27 states have return successors, (54), 48 states have call predecessors, (54), 44 states have call successors, (54) [2023-11-22 18:04:43,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 829 transitions. [2023-11-22 18:04:43,549 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 829 transitions. Word has length 240 [2023-11-22 18:04:43,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:04:43,549 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 829 transitions. [2023-11-22 18:04:43,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (11), 7 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 18:04:43,549 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 829 transitions. [2023-11-22 18:04:43,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-11-22 18:04:43,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:04:43,551 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:04:43,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-22 18:04:43,552 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:04:43,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:04:43,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1767520871, now seen corresponding path program 1 times [2023-11-22 18:04:43,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:04:43,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937501591] [2023-11-22 18:04:43,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:04:43,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:04:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:45,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:04:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:45,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:04:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:45,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-22 18:04:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:45,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 18:04:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:45,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-22 18:04:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:45,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-11-22 18:04:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:45,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:04:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:45,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:04:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:45,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-11-22 18:04:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:45,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2023-11-22 18:04:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:45,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-11-22 18:04:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:46,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-11-22 18:04:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:46,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3188 backedges. 7 proven. 3151 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-22 18:04:46,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:04:46,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937501591] [2023-11-22 18:04:46,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937501591] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:04:46,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229391086] [2023-11-22 18:04:46,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:04:46,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:04:46,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:04:46,126 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:04:46,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-22 18:04:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:46,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 1930 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-22 18:04:46,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:04:46,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3188 backedges. 19 proven. 3151 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-22 18:04:46,878 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:04:49,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3188 backedges. 7 proven. 3151 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-22 18:04:49,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229391086] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:04:49,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:04:49,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 49, 49] total 102 [2023-11-22 18:04:49,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647107401] [2023-11-22 18:04:49,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:04:49,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2023-11-22 18:04:49,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:04:49,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2023-11-22 18:04:49,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4672, Invalid=5630, Unknown=0, NotChecked=0, Total=10302 [2023-11-22 18:04:49,438 INFO L87 Difference]: Start difference. First operand 618 states and 829 transitions. Second operand has 102 states, 102 states have (on average 3.843137254901961) internal successors, (392), 97 states have internal predecessors, (392), 2 states have call successors, (32), 7 states have call predecessors, (32), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-22 18:04:50,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:04:50,844 INFO L93 Difference]: Finished difference Result 1516 states and 2137 transitions. [2023-11-22 18:04:50,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-11-22 18:04:50,845 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 3.843137254901961) internal successors, (392), 97 states have internal predecessors, (392), 2 states have call successors, (32), 7 states have call predecessors, (32), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 252 [2023-11-22 18:04:50,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:04:50,848 INFO L225 Difference]: With dead ends: 1516 [2023-11-22 18:04:50,848 INFO L226 Difference]: Without dead ends: 925 [2023-11-22 18:04:50,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4684, Invalid=6028, Unknown=0, NotChecked=0, Total=10712 [2023-11-22 18:04:50,852 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 555 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-22 18:04:50,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 1401 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-22 18:04:50,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2023-11-22 18:04:50,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 906. [2023-11-22 18:04:50,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 833 states have (on average 1.3373349339735894) internal successors, (1114), 834 states have internal predecessors, (1114), 45 states have call successors, (45), 23 states have call predecessors, (45), 27 states have return successors, (54), 48 states have call predecessors, (54), 44 states have call successors, (54) [2023-11-22 18:04:50,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1213 transitions. [2023-11-22 18:04:50,872 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1213 transitions. Word has length 252 [2023-11-22 18:04:50,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:04:50,873 INFO L495 AbstractCegarLoop]: Abstraction has 906 states and 1213 transitions. [2023-11-22 18:04:50,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 3.843137254901961) internal successors, (392), 97 states have internal predecessors, (392), 2 states have call successors, (32), 7 states have call predecessors, (32), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-22 18:04:50,873 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1213 transitions. [2023-11-22 18:04:50,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-11-22 18:04:50,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:04:50,876 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:04:50,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-22 18:04:51,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:04:51,091 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:04:51,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:04:51,094 INFO L85 PathProgramCache]: Analyzing trace with hash 746195047, now seen corresponding path program 2 times [2023-11-22 18:04:51,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:04:51,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348570778] [2023-11-22 18:04:51,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:04:51,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:04:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:57,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:04:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:57,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:04:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:57,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-11-22 18:04:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:57,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-11-22 18:04:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:57,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2023-11-22 18:04:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:57,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2023-11-22 18:04:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:57,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:04:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:57,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:04:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:57,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2023-11-22 18:04:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:57,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2023-11-22 18:04:57,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:57,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2023-11-22 18:04:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:57,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2023-11-22 18:04:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:04:57,720 INFO L134 CoverageAnalysis]: Checked inductivity of 13244 backedges. 7 proven. 13207 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-22 18:04:57,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:04:57,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348570778] [2023-11-22 18:04:57,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348570778] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:04:57,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40544595] [2023-11-22 18:04:57,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 18:04:57,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:04:57,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:04:57,737 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:04:57,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-22 18:04:58,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 18:04:58,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:04:58,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-22 18:04:58,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:04:58,316 INFO L134 CoverageAnalysis]: Checked inductivity of 13244 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13237 trivial. 0 not checked. [2023-11-22 18:04:58,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:04:58,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40544595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:04:58,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:04:58,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [102] total 103 [2023-11-22 18:04:58,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646999022] [2023-11-22 18:04:58,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:04:58,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:04:58,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:04:58,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:04:58,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4674, Invalid=5832, Unknown=0, NotChecked=0, Total=10506 [2023-11-22 18:04:58,321 INFO L87 Difference]: Start difference. First operand 906 states and 1213 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-22 18:04:58,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:04:58,371 INFO L93 Difference]: Finished difference Result 1783 states and 2389 transitions. [2023-11-22 18:04:58,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:04:58,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 396 [2023-11-22 18:04:58,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:04:58,374 INFO L225 Difference]: With dead ends: 1783 [2023-11-22 18:04:58,374 INFO L226 Difference]: Without dead ends: 904 [2023-11-22 18:04:58,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4674, Invalid=5832, Unknown=0, NotChecked=0, Total=10506 [2023-11-22 18:04:58,378 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 7 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:04:58,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 323 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:04:58,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2023-11-22 18:04:58,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 902. [2023-11-22 18:04:58,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 831 states have (on average 1.3357400722021662) internal successors, (1110), 832 states have internal predecessors, (1110), 43 states have call successors, (43), 23 states have call predecessors, (43), 27 states have return successors, (52), 46 states have call predecessors, (52), 42 states have call successors, (52) [2023-11-22 18:04:58,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1205 transitions. [2023-11-22 18:04:58,401 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1205 transitions. Word has length 396 [2023-11-22 18:04:58,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:04:58,402 INFO L495 AbstractCegarLoop]: Abstraction has 902 states and 1205 transitions. [2023-11-22 18:04:58,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-22 18:04:58,402 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1205 transitions. [2023-11-22 18:04:58,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-11-22 18:04:58,406 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:04:58,406 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:04:58,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-22 18:04:58,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-22 18:04:58,616 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:04:58,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:04:58,617 INFO L85 PathProgramCache]: Analyzing trace with hash 282748003, now seen corresponding path program 1 times [2023-11-22 18:04:58,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:04:58,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439765110] [2023-11-22 18:04:58,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:04:58,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:04:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:05:05,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:05:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:05:05,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:05:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:05:05,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-11-22 18:05:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:05:05,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-11-22 18:05:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:05:05,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2023-11-22 18:05:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:05:05,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2023-11-22 18:05:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:05:05,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:05:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:05:05,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:05:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:05:05,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2023-11-22 18:05:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:05:05,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2023-11-22 18:05:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:05:05,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2023-11-22 18:05:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:05:05,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2023-11-22 18:05:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:05:05,456 INFO L134 CoverageAnalysis]: Checked inductivity of 13244 backedges. 7 proven. 13207 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-22 18:05:05,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:05:05,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439765110] [2023-11-22 18:05:05,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439765110] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:05:05,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340227617] [2023-11-22 18:05:05,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:05:05,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:05:05,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:05:05,459 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:05:05,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-22 18:05:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:05:06,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 2938 conjuncts, 96 conjunts are in the unsatisfiable core [2023-11-22 18:05:06,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:05:06,624 INFO L134 CoverageAnalysis]: Checked inductivity of 13244 backedges. 19 proven. 13207 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-22 18:05:06,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:05:15,686 INFO L134 CoverageAnalysis]: Checked inductivity of 13244 backedges. 7 proven. 13207 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-22 18:05:15,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340227617] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:05:15,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:05:15,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 97, 97] total 198 [2023-11-22 18:05:15,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372370943] [2023-11-22 18:05:15,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:05:15,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 198 states [2023-11-22 18:05:15,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:05:15,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2023-11-22 18:05:15,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18544, Invalid=20462, Unknown=0, NotChecked=0, Total=39006 [2023-11-22 18:05:15,702 INFO L87 Difference]: Start difference. First operand 902 states and 1205 transitions. Second operand has 198 states, 198 states have (on average 3.4343434343434343) internal successors, (680), 193 states have internal predecessors, (680), 2 states have call successors, (32), 7 states have call predecessors, (32), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-22 18:05:21,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:05:21,274 INFO L93 Difference]: Finished difference Result 2372 states and 3367 transitions. [2023-11-22 18:05:21,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2023-11-22 18:05:21,298 INFO L78 Accepts]: Start accepts. Automaton has has 198 states, 198 states have (on average 3.4343434343434343) internal successors, (680), 193 states have internal predecessors, (680), 2 states have call successors, (32), 7 states have call predecessors, (32), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 396 [2023-11-22 18:05:21,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:05:21,305 INFO L225 Difference]: With dead ends: 2372 [2023-11-22 18:05:21,305 INFO L226 Difference]: Without dead ends: 1497 [2023-11-22 18:05:21,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1523 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=18556, Invalid=21244, Unknown=0, NotChecked=0, Total=39800 [2023-11-22 18:05:21,310 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 819 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:05:21,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 1493 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1359 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-22 18:05:21,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2023-11-22 18:05:21,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1478. [2023-11-22 18:05:21,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1407 states have (on average 1.3347547974413647) internal successors, (1878), 1408 states have internal predecessors, (1878), 43 states have call successors, (43), 23 states have call predecessors, (43), 27 states have return successors, (52), 46 states have call predecessors, (52), 42 states have call successors, (52) [2023-11-22 18:05:21,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 1973 transitions. [2023-11-22 18:05:21,338 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 1973 transitions. Word has length 396 [2023-11-22 18:05:21,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:05:21,339 INFO L495 AbstractCegarLoop]: Abstraction has 1478 states and 1973 transitions. [2023-11-22 18:05:21,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 198 states, 198 states have (on average 3.4343434343434343) internal successors, (680), 193 states have internal predecessors, (680), 2 states have call successors, (32), 7 states have call predecessors, (32), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-22 18:05:21,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 1973 transitions. [2023-11-22 18:05:21,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 685 [2023-11-22 18:05:21,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:05:21,344 INFO L195 NwaCegarLoop]: trace histogram [190, 190, 190, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:05:21,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-22 18:05:21,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-22 18:05:21,560 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:05:21,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:05:21,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1717960803, now seen corresponding path program 2 times [2023-11-22 18:05:21,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:05:21,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723775594] [2023-11-22 18:05:21,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:05:21,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:05:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:05:45,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:05:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:05:45,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:05:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:05:45,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 593 [2023-11-22 18:05:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:05:45,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2023-11-22 18:05:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:05:45,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2023-11-22 18:05:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:05:46,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2023-11-22 18:05:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:05:46,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:05:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:05:46,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:05:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:05:46,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2023-11-22 18:05:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:05:46,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 650 [2023-11-22 18:05:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:05:46,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2023-11-22 18:05:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:05:46,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 665 [2023-11-22 18:05:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:05:46,422 INFO L134 CoverageAnalysis]: Checked inductivity of 54092 backedges. 7 proven. 54055 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-22 18:05:46,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:05:46,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723775594] [2023-11-22 18:05:46,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723775594] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:05:46,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345388790] [2023-11-22 18:05:46,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 18:05:46,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:05:46,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:05:46,432 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:05:46,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-22 18:05:47,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 18:05:47,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:05:47,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 18:05:47,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:05:47,583 INFO L134 CoverageAnalysis]: Checked inductivity of 54092 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 54085 trivial. 0 not checked. [2023-11-22 18:05:47,584 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:05:47,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345388790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:05:47,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:05:47,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [198] total 201 [2023-11-22 18:05:47,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115616588] [2023-11-22 18:05:47,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:05:47,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:05:47,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:05:47,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:05:47,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18550, Invalid=21650, Unknown=0, NotChecked=0, Total=40200 [2023-11-22 18:05:47,588 INFO L87 Difference]: Start difference. First operand 1478 states and 1973 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-22 18:05:47,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:05:47,772 INFO L93 Difference]: Finished difference Result 2937 states and 3927 transitions. [2023-11-22 18:05:47,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:05:47,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 684 [2023-11-22 18:05:47,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:05:47,777 INFO L225 Difference]: With dead ends: 2937 [2023-11-22 18:05:47,778 INFO L226 Difference]: Without dead ends: 1482 [2023-11-22 18:05:47,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 701 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=18554, Invalid=22048, Unknown=0, NotChecked=0, Total=40602 [2023-11-22 18:05:47,783 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 8 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:05:47,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 646 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:05:47,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2023-11-22 18:05:47,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1480. [2023-11-22 18:05:47,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 1409 states have (on average 1.3342796309439318) internal successors, (1880), 1410 states have internal predecessors, (1880), 43 states have call successors, (43), 23 states have call predecessors, (43), 27 states have return successors, (52), 46 states have call predecessors, (52), 42 states have call successors, (52) [2023-11-22 18:05:47,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 1975 transitions. [2023-11-22 18:05:47,820 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 1975 transitions. Word has length 684 [2023-11-22 18:05:47,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:05:47,821 INFO L495 AbstractCegarLoop]: Abstraction has 1480 states and 1975 transitions. [2023-11-22 18:05:47,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-22 18:05:47,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 1975 transitions. [2023-11-22 18:05:47,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-22 18:05:47,826 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:05:47,826 INFO L195 NwaCegarLoop]: trace histogram [190, 190, 190, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:05:47,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-22 18:05:48,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-22 18:05:48,038 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:05:48,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:05:48,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1927219223, now seen corresponding path program 1 times [2023-11-22 18:05:48,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:05:48,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977892505] [2023-11-22 18:05:48,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:05:48,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:05:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:12,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:06:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:12,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:06:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:12,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 593 [2023-11-22 18:06:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:12,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2023-11-22 18:06:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:12,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2023-11-22 18:06:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:12,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2023-11-22 18:06:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:12,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:06:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:12,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:06:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:12,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2023-11-22 18:06:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:12,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 650 [2023-11-22 18:06:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:12,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2023-11-22 18:06:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:12,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 666 [2023-11-22 18:06:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:12,960 INFO L134 CoverageAnalysis]: Checked inductivity of 54093 backedges. 7 proven. 54055 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-22 18:06:12,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:06:12,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977892505] [2023-11-22 18:06:12,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977892505] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:06:12,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348788971] [2023-11-22 18:06:12,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:06:12,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:06:12,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:06:12,963 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:06:12,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-22 18:06:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:14,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 5036 conjuncts, 192 conjunts are in the unsatisfiable core [2023-11-22 18:06:14,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:06:14,929 INFO L134 CoverageAnalysis]: Checked inductivity of 54093 backedges. 19 proven. 54055 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-22 18:06:14,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:06:29,730 INFO L134 CoverageAnalysis]: Checked inductivity of 54093 backedges. 7 proven. 54055 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-22 18:06:29,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348788971] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:06:29,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:06:29,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [198, 193, 193] total 264 [2023-11-22 18:06:29,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116850083] [2023-11-22 18:06:29,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:06:29,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 264 states [2023-11-22 18:06:29,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:06:29,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 264 interpolants. [2023-11-22 18:06:29,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33427, Invalid=36005, Unknown=0, NotChecked=0, Total=69432 [2023-11-22 18:06:29,741 INFO L87 Difference]: Start difference. First operand 1480 states and 1975 transitions. Second operand has 264 states, 264 states have (on average 3.3446969696969697) internal successors, (883), 259 states have internal predecessors, (883), 2 states have call successors, (32), 7 states have call predecessors, (32), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-22 18:06:43,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:06:43,730 INFO L93 Difference]: Finished difference Result 3342 states and 4597 transitions. [2023-11-22 18:06:43,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 263 states. [2023-11-22 18:06:43,731 INFO L78 Accepts]: Start accepts. Automaton has has 264 states, 264 states have (on average 3.3446969696969697) internal successors, (883), 259 states have internal predecessors, (883), 2 states have call successors, (32), 7 states have call predecessors, (32), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 685 [2023-11-22 18:06:43,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:06:43,736 INFO L225 Difference]: With dead ends: 3342 [2023-11-22 18:06:43,736 INFO L226 Difference]: Without dead ends: 1889 [2023-11-22 18:06:43,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1589 GetRequests, 1199 SyntacticMatches, 126 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18242 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=33439, Invalid=37051, Unknown=0, NotChecked=0, Total=70490 [2023-11-22 18:06:43,741 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 1359 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1360 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:06:43,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1360 Valid, 1332 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1415 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-22 18:06:43,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2023-11-22 18:06:43,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1876. [2023-11-22 18:06:43,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1876 states, 1805 states have (on average 1.3340720221606648) internal successors, (2408), 1806 states have internal predecessors, (2408), 43 states have call successors, (43), 23 states have call predecessors, (43), 27 states have return successors, (52), 46 states have call predecessors, (52), 42 states have call successors, (52) [2023-11-22 18:06:43,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1876 states to 1876 states and 2503 transitions. [2023-11-22 18:06:43,769 INFO L78 Accepts]: Start accepts. Automaton has 1876 states and 2503 transitions. Word has length 685 [2023-11-22 18:06:43,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:06:43,770 INFO L495 AbstractCegarLoop]: Abstraction has 1876 states and 2503 transitions. [2023-11-22 18:06:43,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 264 states, 264 states have (on average 3.3446969696969697) internal successors, (883), 259 states have internal predecessors, (883), 2 states have call successors, (32), 7 states have call predecessors, (32), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-22 18:06:43,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 2503 transitions. [2023-11-22 18:06:43,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 884 [2023-11-22 18:06:43,776 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:06:43,776 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:06:43,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-22 18:06:43,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:06:43,989 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:06:43,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:06:43,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1821809833, now seen corresponding path program 2 times [2023-11-22 18:06:43,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:06:43,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938071432] [2023-11-22 18:06:43,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:06:43,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:06:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:46,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:06:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:46,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:06:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:46,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 791 [2023-11-22 18:06:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:46,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 797 [2023-11-22 18:06:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:46,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 811 [2023-11-22 18:06:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:46,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2023-11-22 18:06:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:46,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:06:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:46,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:06:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:46,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 840 [2023-11-22 18:06:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:46,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 848 [2023-11-22 18:06:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:46,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2023-11-22 18:06:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:46,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 864 [2023-11-22 18:06:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:46,358 INFO L134 CoverageAnalysis]: Checked inductivity of 98214 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 98207 trivial. 0 not checked. [2023-11-22 18:06:46,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:06:46,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938071432] [2023-11-22 18:06:46,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938071432] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:06:46,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:06:46,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-22 18:06:46,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241868852] [2023-11-22 18:06:46,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:06:46,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-22 18:06:46,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:06:46,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-22 18:06:46,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-22 18:06:46,361 INFO L87 Difference]: Start difference. First operand 1876 states and 2503 transitions. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-22 18:06:48,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:06:48,397 INFO L93 Difference]: Finished difference Result 3778 states and 5049 transitions. [2023-11-22 18:06:48,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-22 18:06:48,397 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 883 [2023-11-22 18:06:48,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:06:48,405 INFO L225 Difference]: With dead ends: 3778 [2023-11-22 18:06:48,405 INFO L226 Difference]: Without dead ends: 2847 [2023-11-22 18:06:48,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=243, Invalid=813, Unknown=0, NotChecked=0, Total=1056 [2023-11-22 18:06:48,407 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 807 mSDsluCounter, 1281 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 1373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:06:48,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 1509 Invalid, 1373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-22 18:06:48,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2023-11-22 18:06:48,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 2806. [2023-11-22 18:06:48,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2806 states, 2701 states have (on average 1.3350610884857461) internal successors, (3606), 2704 states have internal predecessors, (3606), 63 states have call successors, (63), 33 states have call predecessors, (63), 41 states have return successors, (78), 68 states have call predecessors, (78), 62 states have call successors, (78) [2023-11-22 18:06:48,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2806 states to 2806 states and 3747 transitions. [2023-11-22 18:06:48,480 INFO L78 Accepts]: Start accepts. Automaton has 2806 states and 3747 transitions. Word has length 883 [2023-11-22 18:06:48,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:06:48,481 INFO L495 AbstractCegarLoop]: Abstraction has 2806 states and 3747 transitions. [2023-11-22 18:06:48,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-22 18:06:48,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2806 states and 3747 transitions. [2023-11-22 18:06:48,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2023-11-22 18:06:48,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:06:48,488 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:06:48,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-22 18:06:48,488 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:06:48,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:06:48,489 INFO L85 PathProgramCache]: Analyzing trace with hash 878205636, now seen corresponding path program 1 times [2023-11-22 18:06:48,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:06:48,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291899249] [2023-11-22 18:06:48,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:06:48,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:06:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:49,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:06:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:49,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:06:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:49,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 791 [2023-11-22 18:06:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:49,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 797 [2023-11-22 18:06:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:49,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 811 [2023-11-22 18:06:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:49,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2023-11-22 18:06:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:49,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:06:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:49,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:06:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:49,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 840 [2023-11-22 18:06:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:49,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 848 [2023-11-22 18:06:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:49,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2023-11-22 18:06:49,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:49,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 864 [2023-11-22 18:06:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:49,921 INFO L134 CoverageAnalysis]: Checked inductivity of 98214 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 98207 trivial. 0 not checked. [2023-11-22 18:06:49,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:06:49,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291899249] [2023-11-22 18:06:49,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291899249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:06:49,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:06:49,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-22 18:06:49,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603254472] [2023-11-22 18:06:49,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:06:49,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 18:06:49,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:06:49,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 18:06:49,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-22 18:06:49,923 INFO L87 Difference]: Start difference. First operand 2806 states and 3747 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 7 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-22 18:06:50,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:06:50,632 INFO L93 Difference]: Finished difference Result 4684 states and 6266 transitions. [2023-11-22 18:06:50,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 18:06:50,644 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 7 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 884 [2023-11-22 18:06:50,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:06:50,653 INFO L225 Difference]: With dead ends: 4684 [2023-11-22 18:06:50,653 INFO L226 Difference]: Without dead ends: 2826 [2023-11-22 18:06:50,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2023-11-22 18:06:50,656 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 137 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 18:06:50,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 640 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 18:06:50,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2023-11-22 18:06:50,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 2806. [2023-11-22 18:06:50,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2806 states, 2701 states have (on average 1.3343206219918549) internal successors, (3604), 2704 states have internal predecessors, (3604), 63 states have call successors, (63), 33 states have call predecessors, (63), 41 states have return successors, (78), 68 states have call predecessors, (78), 62 states have call successors, (78) [2023-11-22 18:06:50,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2806 states to 2806 states and 3745 transitions. [2023-11-22 18:06:50,727 INFO L78 Accepts]: Start accepts. Automaton has 2806 states and 3745 transitions. Word has length 884 [2023-11-22 18:06:50,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:06:50,729 INFO L495 AbstractCegarLoop]: Abstraction has 2806 states and 3745 transitions. [2023-11-22 18:06:50,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 7 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-22 18:06:50,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2806 states and 3745 transitions. [2023-11-22 18:06:50,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2023-11-22 18:06:50,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:06:50,737 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:06:50,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-22 18:06:50,737 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:06:50,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:06:50,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1822158723, now seen corresponding path program 1 times [2023-11-22 18:06:50,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:06:50,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317929734] [2023-11-22 18:06:50,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:06:50,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:06:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:53,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:06:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:53,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:06:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:53,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 791 [2023-11-22 18:06:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:53,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 797 [2023-11-22 18:06:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:53,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 811 [2023-11-22 18:06:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:53,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2023-11-22 18:06:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:53,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:06:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:53,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:06:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:53,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 840 [2023-11-22 18:06:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:53,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 848 [2023-11-22 18:06:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:53,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2023-11-22 18:06:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:53,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 864 [2023-11-22 18:06:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:53,637 INFO L134 CoverageAnalysis]: Checked inductivity of 98216 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 98209 trivial. 0 not checked. [2023-11-22 18:06:53,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:06:53,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317929734] [2023-11-22 18:06:53,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317929734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:06:53,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:06:53,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-22 18:06:53,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877981192] [2023-11-22 18:06:53,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:06:53,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 18:06:53,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:06:53,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 18:06:53,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:06:53,640 INFO L87 Difference]: Start difference. First operand 2806 states and 3745 transitions. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 5 states have internal predecessors, (83), 5 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-22 18:06:54,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:06:54,216 INFO L93 Difference]: Finished difference Result 5695 states and 7633 transitions. [2023-11-22 18:06:54,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 18:06:54,217 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 5 states have internal predecessors, (83), 5 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 886 [2023-11-22 18:06:54,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:06:54,224 INFO L225 Difference]: With dead ends: 5695 [2023-11-22 18:06:54,224 INFO L226 Difference]: Without dead ends: 2916 [2023-11-22 18:06:54,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-22 18:06:54,228 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 267 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 18:06:54,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 549 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 18:06:54,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2023-11-22 18:06:54,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2866. [2023-11-22 18:06:54,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2746 states have (on average 1.3310269482884196) internal successors, (3655), 2746 states have internal predecessors, (3655), 78 states have call successors, (78), 33 states have call predecessors, (78), 41 states have return successors, (99), 86 states have call predecessors, (99), 77 states have call successors, (99) [2023-11-22 18:06:54,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 3832 transitions. [2023-11-22 18:06:54,279 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 3832 transitions. Word has length 886 [2023-11-22 18:06:54,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:06:54,280 INFO L495 AbstractCegarLoop]: Abstraction has 2866 states and 3832 transitions. [2023-11-22 18:06:54,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 5 states have internal predecessors, (83), 5 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-22 18:06:54,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 3832 transitions. [2023-11-22 18:06:54,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2023-11-22 18:06:54,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:06:54,286 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:06:54,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-22 18:06:54,287 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:06:54,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:06:54,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1505457919, now seen corresponding path program 1 times [2023-11-22 18:06:54,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:06:54,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153817728] [2023-11-22 18:06:54,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:06:54,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:06:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:56,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:06:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:56,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:06:56,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:56,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 791 [2023-11-22 18:06:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:56,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 797 [2023-11-22 18:06:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:56,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 811 [2023-11-22 18:06:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:56,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2023-11-22 18:06:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:56,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:06:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:56,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:06:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:56,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 840 [2023-11-22 18:06:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:56,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 848 [2023-11-22 18:06:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:56,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2023-11-22 18:06:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:56,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 864 [2023-11-22 18:06:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:56,451 INFO L134 CoverageAnalysis]: Checked inductivity of 98216 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98216 trivial. 0 not checked. [2023-11-22 18:06:56,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:06:56,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153817728] [2023-11-22 18:06:56,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153817728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:06:56,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:06:56,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 18:06:56,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940806096] [2023-11-22 18:06:56,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:06:56,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 18:06:56,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:06:56,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 18:06:56,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:06:56,453 INFO L87 Difference]: Start difference. First operand 2866 states and 3832 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-22 18:06:56,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:06:56,861 INFO L93 Difference]: Finished difference Result 5739 states and 7690 transitions. [2023-11-22 18:06:56,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 18:06:56,871 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 886 [2023-11-22 18:06:56,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:06:56,877 INFO L225 Difference]: With dead ends: 5739 [2023-11-22 18:06:56,878 INFO L226 Difference]: Without dead ends: 2887 [2023-11-22 18:06:56,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:06:56,881 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 85 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:06:56,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 515 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 18:06:56,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2023-11-22 18:06:56,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 2867. [2023-11-22 18:06:56,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2867 states, 2747 states have (on average 1.3309064433927922) internal successors, (3656), 2747 states have internal predecessors, (3656), 78 states have call successors, (78), 33 states have call predecessors, (78), 41 states have return successors, (99), 86 states have call predecessors, (99), 77 states have call successors, (99) [2023-11-22 18:06:56,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2867 states to 2867 states and 3833 transitions. [2023-11-22 18:06:56,938 INFO L78 Accepts]: Start accepts. Automaton has 2867 states and 3833 transitions. Word has length 886 [2023-11-22 18:06:56,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:06:56,938 INFO L495 AbstractCegarLoop]: Abstraction has 2867 states and 3833 transitions. [2023-11-22 18:06:56,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-22 18:06:56,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 3833 transitions. [2023-11-22 18:06:56,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2023-11-22 18:06:56,945 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:06:56,946 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:06:56,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-22 18:06:56,946 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:06:56,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:06:56,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1543325357, now seen corresponding path program 1 times [2023-11-22 18:06:56,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:06:56,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459482525] [2023-11-22 18:06:56,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:06:56,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:06:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:59,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:06:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:59,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:06:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:59,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2023-11-22 18:06:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:59,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 798 [2023-11-22 18:06:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:59,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 812 [2023-11-22 18:06:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:59,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 818 [2023-11-22 18:06:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:59,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:06:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:59,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:06:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:59,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2023-11-22 18:06:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:59,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2023-11-22 18:06:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:59,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 856 [2023-11-22 18:06:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:59,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 865 [2023-11-22 18:06:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:06:59,358 INFO L134 CoverageAnalysis]: Checked inductivity of 98217 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 98209 trivial. 0 not checked. [2023-11-22 18:06:59,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:06:59,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459482525] [2023-11-22 18:06:59,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459482525] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:06:59,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232015188] [2023-11-22 18:06:59,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:06:59,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:06:59,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:06:59,359 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:06:59,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-22 18:07:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:07:01,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 6446 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 18:07:01,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:07:01,496 INFO L134 CoverageAnalysis]: Checked inductivity of 98217 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 98209 trivial. 0 not checked. [2023-11-22 18:07:01,496 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:07:01,557 INFO L134 CoverageAnalysis]: Checked inductivity of 98217 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 98209 trivial. 0 not checked. [2023-11-22 18:07:01,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232015188] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 18:07:01,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 18:07:01,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11, 5] total 12 [2023-11-22 18:07:01,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237283106] [2023-11-22 18:07:01,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:07:01,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:07:01,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:07:01,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:07:01,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-22 18:07:01,560 INFO L87 Difference]: Start difference. First operand 2867 states and 3833 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-22 18:07:01,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:07:01,687 INFO L93 Difference]: Finished difference Result 5709 states and 7644 transitions. [2023-11-22 18:07:01,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 18:07:01,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 887 [2023-11-22 18:07:01,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:07:01,707 INFO L225 Difference]: With dead ends: 5709 [2023-11-22 18:07:01,707 INFO L226 Difference]: Without dead ends: 2870 [2023-11-22 18:07:01,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1802 GetRequests, 1789 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-22 18:07:01,710 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 3 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:07:01,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 488 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:07:01,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2023-11-22 18:07:01,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 2870. [2023-11-22 18:07:01,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2750 states have (on average 1.3305454545454545) internal successors, (3659), 2750 states have internal predecessors, (3659), 78 states have call successors, (78), 33 states have call predecessors, (78), 41 states have return successors, (99), 86 states have call predecessors, (99), 77 states have call successors, (99) [2023-11-22 18:07:01,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 3836 transitions. [2023-11-22 18:07:01,773 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 3836 transitions. Word has length 887 [2023-11-22 18:07:01,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:07:01,774 INFO L495 AbstractCegarLoop]: Abstraction has 2870 states and 3836 transitions. [2023-11-22 18:07:01,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-22 18:07:01,774 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 3836 transitions. [2023-11-22 18:07:01,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2023-11-22 18:07:01,782 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:07:01,782 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:07:01,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-22 18:07:01,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-22 18:07:01,999 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:07:01,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:07:01,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1058837295, now seen corresponding path program 1 times [2023-11-22 18:07:02,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:07:02,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387475794] [2023-11-22 18:07:02,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:07:02,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:07:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:07:03,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:07:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:07:03,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:07:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:07:03,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2023-11-22 18:07:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:07:03,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 798 [2023-11-22 18:07:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:07:03,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 812 [2023-11-22 18:07:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:07:04,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 818 [2023-11-22 18:07:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:07:04,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:07:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:07:04,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:07:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:07:04,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2023-11-22 18:07:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:07:04,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2023-11-22 18:07:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:07:04,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 856 [2023-11-22 18:07:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:07:04,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 866 [2023-11-22 18:07:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:07:04,198 INFO L134 CoverageAnalysis]: Checked inductivity of 98218 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 98210 trivial. 0 not checked. [2023-11-22 18:07:04,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:07:04,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387475794] [2023-11-22 18:07:04,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387475794] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:07:04,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696787171] [2023-11-22 18:07:04,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:07:04,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:07:04,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:07:04,200 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:07:04,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process Killed by 15