./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 21:39:30,548 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 21:39:30,598 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-22 21:39:30,602 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 21:39:30,602 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 21:39:30,615 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 21:39:30,616 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 21:39:30,616 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 21:39:30,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 21:39:30,617 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 21:39:30,617 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 21:39:30,617 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 21:39:30,618 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 21:39:30,618 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 21:39:30,628 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 21:39:30,629 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 21:39:30,629 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 21:39:30,629 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 21:39:30,630 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 21:39:30,630 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 21:39:30,630 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 21:39:30,630 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 21:39:30,631 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 21:39:30,631 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 21:39:30,631 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 21:39:30,632 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 21:39:30,632 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 21:39:30,632 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 21:39:30,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 21:39:30,633 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 21:39:30,633 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 21:39:30,633 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 21:39:30,633 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 21:39:30,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 21:39:30,634 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 21:39:30,634 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 21:39:30,634 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 21:39:30,634 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 21:39:30,635 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 21:39:30,635 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb4cf2f7b619bb65636b8158cc0f6ae5cf90699f1f1c19bf802021a20c422d2c Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-22 21:39:30,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 21:39:30,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 21:39:30,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 21:39:30,810 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 21:39:30,811 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 21:39:30,811 INFO L431 ainManager$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 21:39:31,857 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 21:39:32,142 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 21:39:32,142 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 21:39:32,167 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1e8f4fb4/60759aad3ac04e818b07777f84d94548/FLAGc3520c637 [2023-11-22 21:39:32,177 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1e8f4fb4/60759aad3ac04e818b07777f84d94548 [2023-11-22 21:39:32,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 21:39:32,180 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 21:39:32,181 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 21:39:32,181 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 21:39:32,184 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 21:39:32,185 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:39:32" (1/1) ... [2023-11-22 21:39:32,185 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b3ccc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:32, skipping insertion in model container [2023-11-22 21:39:32,186 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:39:32" (1/1) ... [2023-11-22 21:39:32,251 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 21:39:32,638 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 21:39:32,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 21:39:32,777 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 21:39:32,904 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 21:39:32,947 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 21:39:32,973 INFO L206 MainTranslator]: Completed translation [2023-11-22 21:39:32,973 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:32 WrapperNode [2023-11-22 21:39:32,974 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 21:39:32,974 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 21:39:32,975 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 21:39:32,975 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 21:39:32,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:32" (1/1) ... [2023-11-22 21:39:33,006 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:32" (1/1) ... [2023-11-22 21:39:33,043 INFO L138 Inliner]: procedures = 82, calls = 143, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 483 [2023-11-22 21:39:33,049 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 21:39:33,050 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 21:39:33,050 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 21:39:33,050 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 21:39:33,066 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:32" (1/1) ... [2023-11-22 21:39:33,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:32" (1/1) ... [2023-11-22 21:39:33,083 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:32" (1/1) ... [2023-11-22 21:39:33,130 INFO L189 HeapSplitter]: Split 55 memory accesses to 10 slices as follows [2, 2, 1, 5, 2, 8, 0, 33, 2, 0] [2023-11-22 21:39:33,135 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:32" (1/1) ... [2023-11-22 21:39:33,135 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:32" (1/1) ... [2023-11-22 21:39:33,168 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:32" (1/1) ... [2023-11-22 21:39:33,176 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:32" (1/1) ... [2023-11-22 21:39:33,189 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:32" (1/1) ... [2023-11-22 21:39:33,193 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:32" (1/1) ... [2023-11-22 21:39:33,199 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 21:39:33,205 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 21:39:33,205 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 21:39:33,208 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 21:39:33,209 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:32" (1/1) ... [2023-11-22 21:39:33,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 21:39:33,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:39:33,237 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 21:39:33,295 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 21:39:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 21:39:33,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2023-11-22 21:39:33,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2023-11-22 21:39:33,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2023-11-22 21:39:33,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2023-11-22 21:39:33,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2023-11-22 21:39:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2023-11-22 21:39:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2023-11-22 21:39:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2023-11-22 21:39:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2023-11-22 21:39:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2023-11-22 21:39:33,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 21:39:33,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-22 21:39:33,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-22 21:39:33,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-22 21:39:33,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-22 21:39:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-22 21:39:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-22 21:39:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-22 21:39:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-22 21:39:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-22 21:39:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2023-11-22 21:39:33,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2023-11-22 21:39:33,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2023-11-22 21:39:33,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2023-11-22 21:39:33,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2023-11-22 21:39:33,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2023-11-22 21:39:33,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2023-11-22 21:39:33,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#6 [2023-11-22 21:39:33,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#7 [2023-11-22 21:39:33,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#8 [2023-11-22 21:39:33,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#9 [2023-11-22 21:39:33,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2023-11-22 21:39:33,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2023-11-22 21:39:33,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2023-11-22 21:39:33,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2023-11-22 21:39:33,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2023-11-22 21:39:33,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2023-11-22 21:39:33,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2023-11-22 21:39:33,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2023-11-22 21:39:33,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2023-11-22 21:39:33,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2023-11-22 21:39:33,332 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-22 21:39:33,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-22 21:39:33,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-22 21:39:33,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-22 21:39:33,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-22 21:39:33,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-22 21:39:33,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-22 21:39:33,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-22 21:39:33,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-22 21:39:33,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-22 21:39:33,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-22 21:39:33,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-22 21:39:33,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-22 21:39:33,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-22 21:39:33,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-22 21:39:33,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-22 21:39:33,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-22 21:39:33,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-22 21:39:33,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-22 21:39:33,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-22 21:39:33,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-22 21:39:33,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2023-11-22 21:39:33,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2023-11-22 21:39:33,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2023-11-22 21:39:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#0 [2023-11-22 21:39:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#1 [2023-11-22 21:39:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#2 [2023-11-22 21:39:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#3 [2023-11-22 21:39:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#4 [2023-11-22 21:39:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#5 [2023-11-22 21:39:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#6 [2023-11-22 21:39:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#7 [2023-11-22 21:39:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#8 [2023-11-22 21:39:33,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#9 [2023-11-22 21:39:33,337 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#0 [2023-11-22 21:39:33,337 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#1 [2023-11-22 21:39:33,337 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#2 [2023-11-22 21:39:33,337 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#3 [2023-11-22 21:39:33,337 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#4 [2023-11-22 21:39:33,337 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#5 [2023-11-22 21:39:33,338 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#6 [2023-11-22 21:39:33,338 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#7 [2023-11-22 21:39:33,338 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#8 [2023-11-22 21:39:33,338 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#9 [2023-11-22 21:39:33,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-22 21:39:33,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-22 21:39:33,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 21:39:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-22 21:39:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-22 21:39:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-22 21:39:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-22 21:39:33,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-22 21:39:33,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-22 21:39:33,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-22 21:39:33,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-22 21:39:33,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-22 21:39:33,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2023-11-22 21:39:33,341 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2023-11-22 21:39:33,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2023-11-22 21:39:33,341 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-22 21:39:33,341 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-22 21:39:33,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-22 21:39:33,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-22 21:39:33,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-22 21:39:33,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-22 21:39:33,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-22 21:39:33,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-22 21:39:33,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-22 21:39:33,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-22 21:39:33,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-22 21:39:33,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-22 21:39:33,343 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-22 21:39:33,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-22 21:39:33,343 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-22 21:39:33,343 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-22 21:39:33,343 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-22 21:39:33,343 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-22 21:39:33,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 21:39:33,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-22 21:39:33,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-22 21:39:33,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-22 21:39:33,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-22 21:39:33,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-22 21:39:33,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-22 21:39:33,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-22 21:39:33,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-22 21:39:33,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-22 21:39:33,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-22 21:39:33,346 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2023-11-22 21:39:33,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2023-11-22 21:39:33,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2023-11-22 21:39:33,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2023-11-22 21:39:33,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2023-11-22 21:39:33,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2023-11-22 21:39:33,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2023-11-22 21:39:33,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2023-11-22 21:39:33,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#6 [2023-11-22 21:39:33,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#7 [2023-11-22 21:39:33,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#8 [2023-11-22 21:39:33,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#9 [2023-11-22 21:39:33,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-22 21:39:33,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-22 21:39:33,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 21:39:33,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 21:39:33,572 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 21:39:33,574 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 21:39:33,598 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-22 21:39:34,146 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 21:39:34,203 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 21:39:34,204 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-22 21:39:34,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:39:34 BoogieIcfgContainer [2023-11-22 21:39:34,205 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 21:39:34,207 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 21:39:34,207 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 21:39:34,210 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 21:39:34,210 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:39:32" (1/3) ... [2023-11-22 21:39:34,211 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389e4a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:39:34, skipping insertion in model container [2023-11-22 21:39:34,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:32" (2/3) ... [2023-11-22 21:39:34,215 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389e4a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:39:34, skipping insertion in model container [2023-11-22 21:39:34,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:39:34" (3/3) ... [2023-11-22 21:39:34,216 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 21:39:34,229 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 21:39:34,229 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 21:39:34,277 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 21:39:34,282 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;@4d33e350, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 21:39:34,283 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 21:39:34,287 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 21:39:34,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-22 21:39:34,294 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:39:34,295 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 21:39:34,295 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:39:34,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:39:34,300 INFO L85 PathProgramCache]: Analyzing trace with hash 275293622, now seen corresponding path program 1 times [2023-11-22 21:39:34,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:39:34,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176272132] [2023-11-22 21:39:34,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:39:34,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:39:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:34,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:39:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:34,752 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 21:39:34,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:39:34,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176272132] [2023-11-22 21:39:34,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176272132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:39:34,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:39:34,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 21:39:34,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758644224] [2023-11-22 21:39:34,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:39:34,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:39:34,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:39:34,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:39:34,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 21:39:34,778 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 21:39:35,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:39:35,212 INFO L93 Difference]: Finished difference Result 453 states and 695 transitions. [2023-11-22 21:39:35,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:39:35,215 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 21:39:35,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:39:35,223 INFO L225 Difference]: With dead ends: 453 [2023-11-22 21:39:35,223 INFO L226 Difference]: Without dead ends: 299 [2023-11-22 21:39:35,226 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 21:39:35,228 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 21:39:35,229 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 21:39:35,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-11-22 21:39:35,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 257. [2023-11-22 21:39:35,277 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 21:39:35,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 358 transitions. [2023-11-22 21:39:35,280 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 358 transitions. Word has length 18 [2023-11-22 21:39:35,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:39:35,281 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 358 transitions. [2023-11-22 21:39:35,281 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 21:39:35,281 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 358 transitions. [2023-11-22 21:39:35,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-22 21:39:35,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:39:35,283 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 21:39:35,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 21:39:35,283 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:39:35,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:39:35,284 INFO L85 PathProgramCache]: Analyzing trace with hash -354957720, now seen corresponding path program 1 times [2023-11-22 21:39:35,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:39:35,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165805087] [2023-11-22 21:39:35,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:39:35,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:39:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:35,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:39:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:35,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 21:39:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:35,381 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 21:39:35,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:39:35,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165805087] [2023-11-22 21:39:35,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165805087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:39:35,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:39:35,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 21:39:35,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126032237] [2023-11-22 21:39:35,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:39:35,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:39:35,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:39:35,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:39:35,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 21:39:35,385 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 21:39:35,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:39:35,652 INFO L93 Difference]: Finished difference Result 555 states and 780 transitions. [2023-11-22 21:39:35,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 21:39:35,652 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 21:39:35,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:39:35,654 INFO L225 Difference]: With dead ends: 555 [2023-11-22 21:39:35,654 INFO L226 Difference]: Without dead ends: 302 [2023-11-22 21:39:35,655 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 21:39:35,656 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 21:39:35,657 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 21:39:35,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-11-22 21:39:35,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 258. [2023-11-22 21:39:35,672 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 21:39:35,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 359 transitions. [2023-11-22 21:39:35,674 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 359 transitions. Word has length 28 [2023-11-22 21:39:35,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:39:35,674 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 359 transitions. [2023-11-22 21:39:35,674 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 21:39:35,674 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 359 transitions. [2023-11-22 21:39:35,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-22 21:39:35,675 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:39:35,675 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 21:39:35,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 21:39:35,676 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:39:35,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:39:35,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1279910342, now seen corresponding path program 1 times [2023-11-22 21:39:35,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:39:35,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574015644] [2023-11-22 21:39:35,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:39:35,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:39:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:35,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:39:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:35,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 21:39:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:35,760 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 21:39:35,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:39:35,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574015644] [2023-11-22 21:39:35,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574015644] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:39:35,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769789861] [2023-11-22 21:39:35,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:39:35,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:39:35,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:39:35,772 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 21:39:35,776 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 21:39:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:35,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:39:35,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:39:36,005 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 21:39:36,005 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:39:36,033 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 21:39:36,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769789861] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:39:36,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:39:36,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-11-22 21:39:36,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882244231] [2023-11-22 21:39:36,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:39:36,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 21:39:36,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:39:36,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 21:39:36,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:39:36,036 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 21:39:36,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:39:36,349 INFO L93 Difference]: Finished difference Result 563 states and 792 transitions. [2023-11-22 21:39:36,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 21:39:36,351 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 21:39:36,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:39:36,353 INFO L225 Difference]: With dead ends: 563 [2023-11-22 21:39:36,353 INFO L226 Difference]: Without dead ends: 309 [2023-11-22 21:39:36,354 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 21:39:36,354 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 49 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 21:39:36,355 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 21:39:36,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-11-22 21:39:36,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 267. [2023-11-22 21:39:36,380 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 21:39:36,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 371 transitions. [2023-11-22 21:39:36,382 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 371 transitions. Word has length 31 [2023-11-22 21:39:36,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:39:36,382 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 371 transitions. [2023-11-22 21:39:36,382 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 21:39:36,383 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 371 transitions. [2023-11-22 21:39:36,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-22 21:39:36,387 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:39:36,387 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 21:39:36,415 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 21:39:36,600 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 21:39:36,601 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:39:36,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:39:36,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1937247464, now seen corresponding path program 2 times [2023-11-22 21:39:36,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:39:36,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590230752] [2023-11-22 21:39:36,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:39:36,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:39:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:36,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:39:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:36,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 21:39:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:36,782 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 21:39:36,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:39:36,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590230752] [2023-11-22 21:39:36,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590230752] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:39:36,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:39:36,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 21:39:36,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255180588] [2023-11-22 21:39:36,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:39:36,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:39:36,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:39:36,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:39:36,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 21:39:36,783 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 21:39:37,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:39:37,029 INFO L93 Difference]: Finished difference Result 571 states and 799 transitions. [2023-11-22 21:39:37,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 21:39:37,029 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 21:39:37,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:39:37,031 INFO L225 Difference]: With dead ends: 571 [2023-11-22 21:39:37,031 INFO L226 Difference]: Without dead ends: 308 [2023-11-22 21:39:37,032 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 21:39:37,037 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 21:39:37,037 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 21:39:37,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-22 21:39:37,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 266. [2023-11-22 21:39:37,057 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 21:39:37,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 367 transitions. [2023-11-22 21:39:37,058 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 367 transitions. Word has length 40 [2023-11-22 21:39:37,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:39:37,059 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 367 transitions. [2023-11-22 21:39:37,059 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 21:39:37,059 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 367 transitions. [2023-11-22 21:39:37,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-22 21:39:37,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:39:37,062 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 21:39:37,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-22 21:39:37,063 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:39:37,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:39:37,063 INFO L85 PathProgramCache]: Analyzing trace with hash -365978726, now seen corresponding path program 1 times [2023-11-22 21:39:37,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:39:37,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280191440] [2023-11-22 21:39:37,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:39:37,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:39:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:37,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:39:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:37,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 21:39:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:37,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-22 21:39:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:37,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 21:39:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:37,250 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 21:39:37,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:39:37,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280191440] [2023-11-22 21:39:37,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280191440] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:39:37,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544248494] [2023-11-22 21:39:37,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:39:37,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:39:37,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:39:37,261 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 21:39:37,300 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 21:39:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:37,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 21:39:37,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:39:37,541 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 21:39:37,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:39:37,599 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 21:39:37,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544248494] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:39:37,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:39:37,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2023-11-22 21:39:37,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890526312] [2023-11-22 21:39:37,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:39:37,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-22 21:39:37,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:39:37,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-22 21:39:37,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2023-11-22 21:39:37,602 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 21:39:37,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:39:37,905 INFO L93 Difference]: Finished difference Result 473 states and 663 transitions. [2023-11-22 21:39:37,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-22 21:39:37,905 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 21:39:37,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:39:37,907 INFO L225 Difference]: With dead ends: 473 [2023-11-22 21:39:37,907 INFO L226 Difference]: Without dead ends: 326 [2023-11-22 21:39:37,907 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 21:39:37,908 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 21:39:37,908 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 21:39:37,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-11-22 21:39:37,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 284. [2023-11-22 21:39:37,933 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 21:39:37,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 391 transitions. [2023-11-22 21:39:37,934 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 391 transitions. Word has length 58 [2023-11-22 21:39:37,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:39:37,934 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 391 transitions. [2023-11-22 21:39:37,934 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 21:39:37,935 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 391 transitions. [2023-11-22 21:39:37,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-22 21:39:37,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:39:37,936 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 21:39:37,958 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 21:39:38,155 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 21:39:38,156 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:39:38,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:39:38,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1128287578, now seen corresponding path program 2 times [2023-11-22 21:39:38,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:39:38,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356462097] [2023-11-22 21:39:38,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:39:38,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:39:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:38,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:39:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:38,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 21:39:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:38,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 21:39:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:38,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 21:39:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:38,501 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 21:39:38,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:39:38,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356462097] [2023-11-22 21:39:38,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356462097] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:39:38,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978935048] [2023-11-22 21:39:38,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 21:39:38,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:39:38,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:39:38,503 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 21:39:38,520 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 21:39:38,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 21:39:38,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 21:39:38,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 21:39:38,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:39:38,818 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 21:39:38,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:39:39,039 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 21:39:39,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978935048] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:39:39,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:39:39,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 26 [2023-11-22 21:39:39,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808483962] [2023-11-22 21:39:39,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:39:39,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-22 21:39:39,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:39:39,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-22 21:39:39,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2023-11-22 21:39:39,041 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 21:39:39,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:39:39,449 INFO L93 Difference]: Finished difference Result 527 states and 741 transitions. [2023-11-22 21:39:39,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-22 21:39:39,450 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 21:39:39,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:39:39,451 INFO L225 Difference]: With dead ends: 527 [2023-11-22 21:39:39,451 INFO L226 Difference]: Without dead ends: 362 [2023-11-22 21:39:39,452 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 21:39:39,452 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 21:39:39,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 749 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 21:39:39,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-11-22 21:39:39,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 320. [2023-11-22 21:39:39,462 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 21:39:39,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 439 transitions. [2023-11-22 21:39:39,463 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 439 transitions. Word has length 76 [2023-11-22 21:39:39,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:39:39,464 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 439 transitions. [2023-11-22 21:39:39,464 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 21:39:39,464 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 439 transitions. [2023-11-22 21:39:39,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-22 21:39:39,465 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:39:39,465 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 21:39:39,478 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 21:39:39,677 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 21:39:39,678 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:39:39,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:39:39,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1574625498, now seen corresponding path program 3 times [2023-11-22 21:39:39,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:39:39,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113997899] [2023-11-22 21:39:39,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:39:39,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:39:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:40,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:39:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:40,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 21:39:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:40,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 21:39:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:40,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 21:39:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:40,483 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 21:39:40,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:39:40,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113997899] [2023-11-22 21:39:40,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113997899] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:39:40,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38813843] [2023-11-22 21:39:40,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 21:39:40,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:39:40,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:39:40,485 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 21:39:40,504 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 21:39:40,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-22 21:39:40,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 21:39:40,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 21:39:40,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:39:40,879 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2023-11-22 21:39:40,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:39:40,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38813843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:39:40,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:39:40,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [26] total 29 [2023-11-22 21:39:40,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471926592] [2023-11-22 21:39:40,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:39:40,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 21:39:40,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:39:40,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 21:39:40,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=503, Unknown=0, NotChecked=0, Total=812 [2023-11-22 21:39:40,881 INFO L87 Difference]: Start difference. First operand 320 states and 439 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 21:39:41,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:39:41,057 INFO L93 Difference]: Finished difference Result 951 states and 1311 transitions. [2023-11-22 21:39:41,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:39:41,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 21:39:41,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:39:41,059 INFO L225 Difference]: With dead ends: 951 [2023-11-22 21:39:41,059 INFO L226 Difference]: Without dead ends: 633 [2023-11-22 21:39:41,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=313, Invalid=557, Unknown=0, NotChecked=0, Total=870 [2023-11-22 21:39:41,060 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 126 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:39:41,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 624 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:39:41,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2023-11-22 21:39:41,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 625. [2023-11-22 21:39:41,080 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 21:39:41,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 861 transitions. [2023-11-22 21:39:41,082 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 861 transitions. Word has length 112 [2023-11-22 21:39:41,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:39:41,082 INFO L495 AbstractCegarLoop]: Abstraction has 625 states and 861 transitions. [2023-11-22 21:39:41,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 21:39:41,083 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 861 transitions. [2023-11-22 21:39:41,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-22 21:39:41,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:39:41,084 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 21:39:41,099 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 21:39:41,299 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 21:39:41,299 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:39:41,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:39:41,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1416157804, now seen corresponding path program 1 times [2023-11-22 21:39:41,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:39:41,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764462024] [2023-11-22 21:39:41,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:39:41,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:39:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:41,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:39:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:41,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 21:39:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:41,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 21:39:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:41,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:39:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:41,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 21:39:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:41,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-22 21:39:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:41,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 21:39:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:41,551 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 21:39:41,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:39:41,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764462024] [2023-11-22 21:39:41,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764462024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:39:41,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:39:41,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 21:39:41,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881693707] [2023-11-22 21:39:41,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:39:41,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 21:39:41,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:39:41,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 21:39:41,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 21:39:41,553 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 21:39:42,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:39:42,034 INFO L93 Difference]: Finished difference Result 1262 states and 1732 transitions. [2023-11-22 21:39:42,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 21:39:42,034 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 21:39:42,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:39:42,036 INFO L225 Difference]: With dead ends: 1262 [2023-11-22 21:39:42,036 INFO L226 Difference]: Without dead ends: 641 [2023-11-22 21:39:42,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-22 21:39:42,037 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 95 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 21:39:42,038 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 21:39:42,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-11-22 21:39:42,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 460. [2023-11-22 21:39:42,055 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 21:39:42,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 629 transitions. [2023-11-22 21:39:42,057 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 629 transitions. Word has length 147 [2023-11-22 21:39:42,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:39:42,057 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 629 transitions. [2023-11-22 21:39:42,057 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 21:39:42,057 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 629 transitions. [2023-11-22 21:39:42,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-22 21:39:42,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:39:42,059 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 21:39:42,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-22 21:39:42,059 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:39:42,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:39:42,059 INFO L85 PathProgramCache]: Analyzing trace with hash 870100556, now seen corresponding path program 2 times [2023-11-22 21:39:42,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:39:42,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017834903] [2023-11-22 21:39:42,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:39:42,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:39:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:42,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:39:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:42,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 21:39:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:42,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 21:39:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:42,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 21:39:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:42,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-22 21:39:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:42,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 21:39:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:42,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:39:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:42,521 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 21:39:42,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:39:42,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017834903] [2023-11-22 21:39:42,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017834903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:39:42,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:39:42,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 21:39:42,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129512763] [2023-11-22 21:39:42,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:39:42,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:39:42,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:39:42,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:39:42,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:39:42,523 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 21:39:43,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:39:43,314 INFO L93 Difference]: Finished difference Result 915 states and 1263 transitions. [2023-11-22 21:39:43,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 21:39:43,314 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 21:39:43,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:39:43,317 INFO L225 Difference]: With dead ends: 915 [2023-11-22 21:39:43,317 INFO L226 Difference]: Without dead ends: 482 [2023-11-22 21:39:43,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-22 21:39:43,319 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 36 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 21:39:43,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 680 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 21:39:43,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-11-22 21:39:43,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 459. [2023-11-22 21:39:43,338 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 21:39:43,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 626 transitions. [2023-11-22 21:39:43,339 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 626 transitions. Word has length 147 [2023-11-22 21:39:43,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:39:43,339 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 626 transitions. [2023-11-22 21:39:43,339 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 21:39:43,340 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 626 transitions. [2023-11-22 21:39:43,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-22 21:39:43,342 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:39:43,342 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 21:39:43,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-22 21:39:43,342 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:39:43,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:39:43,343 INFO L85 PathProgramCache]: Analyzing trace with hash -853647844, now seen corresponding path program 1 times [2023-11-22 21:39:43,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:39:43,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908495157] [2023-11-22 21:39:43,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:39:43,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:39:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:43,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:39:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:43,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 21:39:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:43,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 21:39:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:43,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 21:39:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:43,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-22 21:39:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:43,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 21:39:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:43,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:39:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:44,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:39:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:44,014 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 21:39:44,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:39:44,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908495157] [2023-11-22 21:39:44,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908495157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:39:44,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:39:44,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-22 21:39:44,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214101273] [2023-11-22 21:39:44,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:39:44,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-22 21:39:44,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:39:44,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-22 21:39:44,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-22 21:39:44,016 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 21:39:44,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:39:44,652 INFO L93 Difference]: Finished difference Result 920 states and 1268 transitions. [2023-11-22 21:39:44,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 21:39:44,653 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 21:39:44,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:39:44,654 INFO L225 Difference]: With dead ends: 920 [2023-11-22 21:39:44,655 INFO L226 Difference]: Without dead ends: 488 [2023-11-22 21:39:44,655 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 21:39:44,655 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 43 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 21:39:44,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 1198 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 21:39:44,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-11-22 21:39:44,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 465. [2023-11-22 21:39:44,670 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 21:39:44,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 630 transitions. [2023-11-22 21:39:44,671 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 630 transitions. Word has length 153 [2023-11-22 21:39:44,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:39:44,672 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 630 transitions. [2023-11-22 21:39:44,672 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 21:39:44,672 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 630 transitions. [2023-11-22 21:39:44,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-22 21:39:44,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:39:44,673 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 21:39:44,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-22 21:39:44,674 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:39:44,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:39:44,674 INFO L85 PathProgramCache]: Analyzing trace with hash 362791113, now seen corresponding path program 1 times [2023-11-22 21:39:44,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:39:44,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632713626] [2023-11-22 21:39:44,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:39:44,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:39:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:45,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:39:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:45,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 21:39:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:45,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 21:39:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:45,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 21:39:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:45,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-22 21:39:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:45,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 21:39:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:45,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:39:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:45,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:39:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:45,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-22 21:39:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:45,587 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 21:39:45,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:39:45,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632713626] [2023-11-22 21:39:45,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632713626] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:39:45,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725604646] [2023-11-22 21:39:45,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:39:45,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:39:45,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:39:45,589 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 21:39:45,617 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 21:39:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:45,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 1203 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-22 21:39:45,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:39:46,119 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 21:39:46,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:39:46,820 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 21:39:46,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725604646] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:39:46,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:39:46,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 25] total 52 [2023-11-22 21:39:46,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919619276] [2023-11-22 21:39:46,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:39:46,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-22 21:39:46,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:39:46,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-22 21:39:46,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1185, Invalid=1467, Unknown=0, NotChecked=0, Total=2652 [2023-11-22 21:39:46,826 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 21:39:47,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:39:47,385 INFO L93 Difference]: Finished difference Result 1064 states and 1496 transitions. [2023-11-22 21:39:47,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-22 21:39:47,385 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 21:39:47,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:39:47,388 INFO L225 Difference]: With dead ends: 1064 [2023-11-22 21:39:47,388 INFO L226 Difference]: Without dead ends: 626 [2023-11-22 21:39:47,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1185, Invalid=1467, Unknown=0, NotChecked=0, Total=2652 [2023-11-22 21:39:47,389 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 272 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 21:39:47,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 882 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 21:39:47,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-11-22 21:39:47,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 609. [2023-11-22 21:39:47,438 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 21:39:47,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 822 transitions. [2023-11-22 21:39:47,440 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 822 transitions. Word has length 159 [2023-11-22 21:39:47,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:39:47,440 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 822 transitions. [2023-11-22 21:39:47,440 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 21:39:47,440 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 822 transitions. [2023-11-22 21:39:47,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-11-22 21:39:47,443 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:39:47,443 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 21:39:47,466 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 21:39:47,652 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 21:39:47,652 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:39:47,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:39:47,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1718024649, now seen corresponding path program 2 times [2023-11-22 21:39:47,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:39:47,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484246627] [2023-11-22 21:39:47,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:39:47,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:39:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:49,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:39:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:49,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 21:39:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:49,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-22 21:39:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:49,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 21:39:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:49,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-22 21:39:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:50,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-11-22 21:39:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:50,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:39:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:50,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:39:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:50,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-11-22 21:39:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:50,180 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 21:39:50,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:39:50,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484246627] [2023-11-22 21:39:50,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484246627] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:39:50,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872389619] [2023-11-22 21:39:50,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 21:39:50,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:39:50,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:39:50,182 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 21:39:50,196 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 21:39:50,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 21:39:50,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 21:39:50,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-22 21:39:50,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:39:50,916 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 21:39:50,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:39:50,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872389619] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:39:50,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:39:50,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [52] total 63 [2023-11-22 21:39:50,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106020242] [2023-11-22 21:39:50,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:39:50,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-22 21:39:50,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:39:50,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-22 21:39:50,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1208, Invalid=2698, Unknown=0, NotChecked=0, Total=3906 [2023-11-22 21:39:50,919 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 21:39:51,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:39:51,341 INFO L93 Difference]: Finished difference Result 1229 states and 1669 transitions. [2023-11-22 21:39:51,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-22 21:39:51,342 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 21:39:51,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:39:51,344 INFO L225 Difference]: With dead ends: 1229 [2023-11-22 21:39:51,344 INFO L226 Difference]: Without dead ends: 647 [2023-11-22 21:39:51,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1221, Invalid=3069, Unknown=0, NotChecked=0, Total=4290 [2023-11-22 21:39:51,348 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, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 21:39:51,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2228 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 21:39:51,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2023-11-22 21:39:51,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 617. [2023-11-22 21:39:51,364 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 21:39:51,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 832 transitions. [2023-11-22 21:39:51,365 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 832 transitions. Word has length 231 [2023-11-22 21:39:51,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:39:51,366 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 832 transitions. [2023-11-22 21:39:51,366 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 21:39:51,366 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 832 transitions. [2023-11-22 21:39:51,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-11-22 21:39:51,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:39:51,368 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 21:39:51,394 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 21:39:51,580 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 21:39:51,580 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:39:51,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:39:51,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1459207654, now seen corresponding path program 1 times [2023-11-22 21:39:51,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:39:51,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981677305] [2023-11-22 21:39:51,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:39:51,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:39:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:51,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:39:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:51,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 21:39:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:51,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-22 21:39:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:51,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 21:39:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:51,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-22 21:39:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:51,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-11-22 21:39:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:51,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:39:51,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:51,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-11-22 21:39:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:51,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-11-22 21:39:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:52,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-11-22 21:39:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:52,043 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 21:39:52,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:39:52,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981677305] [2023-11-22 21:39:52,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981677305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:39:52,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:39:52,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 21:39:52,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062339255] [2023-11-22 21:39:52,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:39:52,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 21:39:52,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:39:52,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 21:39:52,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:39:52,045 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 21:39:52,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:39:52,605 INFO L93 Difference]: Finished difference Result 936 states and 1274 transitions. [2023-11-22 21:39:52,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 21:39:52,606 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 21:39:52,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:39:52,608 INFO L225 Difference]: With dead ends: 936 [2023-11-22 21:39:52,608 INFO L226 Difference]: Without dead ends: 636 [2023-11-22 21:39:52,609 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 21:39:52,609 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 93 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 21:39:52,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 620 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 21:39:52,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2023-11-22 21:39:52,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 619. [2023-11-22 21:39:52,628 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 21:39:52,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 834 transitions. [2023-11-22 21:39:52,630 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 834 transitions. Word has length 239 [2023-11-22 21:39:52,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:39:52,630 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 834 transitions. [2023-11-22 21:39:52,631 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 21:39:52,631 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 834 transitions. [2023-11-22 21:39:52,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-22 21:39:52,632 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:39:52,632 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 21:39:52,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-22 21:39:52,633 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:39:52,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:39:52,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1567542631, now seen corresponding path program 1 times [2023-11-22 21:39:52,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:39:52,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277147749] [2023-11-22 21:39:52,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:39:52,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:39:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:53,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:39:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:53,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 21:39:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:53,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-22 21:39:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:53,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 21:39:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:53,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-22 21:39:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:53,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-11-22 21:39:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:53,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:39:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:53,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-11-22 21:39:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:53,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-11-22 21:39:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:53,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-11-22 21:39:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:53,360 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 21:39:53,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:39:53,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277147749] [2023-11-22 21:39:53,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277147749] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:39:53,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:39:53,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-22 21:39:53,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282179864] [2023-11-22 21:39:53,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:39:53,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-22 21:39:53,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:39:53,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-22 21:39:53,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-22 21:39:53,362 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 21:39:54,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:39:54,629 INFO L93 Difference]: Finished difference Result 1237 states and 1674 transitions. [2023-11-22 21:39:54,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-22 21:39:54,629 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 21:39:54,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:39:54,632 INFO L225 Difference]: With dead ends: 1237 [2023-11-22 21:39:54,632 INFO L226 Difference]: Without dead ends: 645 [2023-11-22 21:39:54,633 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 21:39:54,633 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 319 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 21:39:54,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 649 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 21:39:54,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2023-11-22 21:39:54,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 618. [2023-11-22 21:39:54,654 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 21:39:54,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 829 transitions. [2023-11-22 21:39:54,655 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 829 transitions. Word has length 240 [2023-11-22 21:39:54,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:39:54,656 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 829 transitions. [2023-11-22 21:39:54,656 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 21:39:54,656 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 829 transitions. [2023-11-22 21:39:54,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-11-22 21:39:54,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:39:54,658 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 21:39:54,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-22 21:39:54,658 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:39:54,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:39:54,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1525886020, now seen corresponding path program 1 times [2023-11-22 21:39:54,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:39:54,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030327132] [2023-11-22 21:39:54,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:39:54,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:39:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:56,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:39:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:56,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 21:39:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:56,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-22 21:39:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:56,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 21:39:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:56,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-22 21:39:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:56,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-11-22 21:39:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:56,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:39:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:56,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:39:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:57,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-11-22 21:39:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:57,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2023-11-22 21:39:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:57,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-11-22 21:39:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:57,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-11-22 21:39:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:57,168 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 21:39:57,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:39:57,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030327132] [2023-11-22 21:39:57,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030327132] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:39:57,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200122277] [2023-11-22 21:39:57,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:39:57,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:39:57,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:39:57,180 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 21:39:57,181 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 21:39:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:39:57,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 1930 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-22 21:39:57,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:39:57,875 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 21:39:57,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:39:59,764 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 21:39:59,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200122277] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:39:59,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:39:59,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 49, 49] total 102 [2023-11-22 21:39:59,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45901328] [2023-11-22 21:39:59,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:39:59,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2023-11-22 21:39:59,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:39:59,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2023-11-22 21:39:59,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4672, Invalid=5630, Unknown=0, NotChecked=0, Total=10302 [2023-11-22 21:39:59,780 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 21:40:01,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:40:01,222 INFO L93 Difference]: Finished difference Result 1516 states and 2137 transitions. [2023-11-22 21:40:01,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-11-22 21:40:01,223 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 21:40:01,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:40:01,226 INFO L225 Difference]: With dead ends: 1516 [2023-11-22 21:40:01,226 INFO L226 Difference]: Without dead ends: 925 [2023-11-22 21:40:01,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4684, Invalid=6028, Unknown=0, NotChecked=0, Total=10712 [2023-11-22 21:40:01,229 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 458 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:40:01,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 1869 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-22 21:40:01,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2023-11-22 21:40:01,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 906. [2023-11-22 21:40:01,247 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 21:40:01,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1213 transitions. [2023-11-22 21:40:01,249 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1213 transitions. Word has length 252 [2023-11-22 21:40:01,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:40:01,249 INFO L495 AbstractCegarLoop]: Abstraction has 906 states and 1213 transitions. [2023-11-22 21:40:01,250 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 21:40:01,250 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1213 transitions. [2023-11-22 21:40:01,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-11-22 21:40:01,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:40:01,253 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 21:40:01,277 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 21:40:01,469 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 21:40:01,469 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:40:01,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:40:01,470 INFO L85 PathProgramCache]: Analyzing trace with hash 504560196, now seen corresponding path program 2 times [2023-11-22 21:40:01,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:40:01,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567151581] [2023-11-22 21:40:01,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:40:01,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:40:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:07,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:40:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:07,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 21:40:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:07,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-11-22 21:40:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:07,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-11-22 21:40:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:07,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2023-11-22 21:40:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:07,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2023-11-22 21:40:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:07,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:40:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:07,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:40:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:07,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2023-11-22 21:40:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:07,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2023-11-22 21:40:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:07,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2023-11-22 21:40:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:07,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2023-11-22 21:40:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:07,949 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 21:40:07,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:40:07,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567151581] [2023-11-22 21:40:07,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567151581] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:40:07,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618344349] [2023-11-22 21:40:07,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 21:40:07,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:40:07,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:40:07,951 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 21:40:07,952 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 21:40:08,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 21:40:08,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 21:40:08,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 21:40:08,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:40:08,510 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 21:40:08,510 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:40:08,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618344349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:40:08,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:40:08,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [102] total 103 [2023-11-22 21:40:08,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794922426] [2023-11-22 21:40:08,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:40:08,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 21:40:08,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:40:08,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 21:40:08,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4674, Invalid=5832, Unknown=0, NotChecked=0, Total=10506 [2023-11-22 21:40:08,513 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 21:40:08,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:40:08,563 INFO L93 Difference]: Finished difference Result 1783 states and 2389 transitions. [2023-11-22 21:40:08,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 21:40:08,564 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 21:40:08,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:40:08,566 INFO L225 Difference]: With dead ends: 1783 [2023-11-22 21:40:08,566 INFO L226 Difference]: Without dead ends: 904 [2023-11-22 21:40:08,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4674, Invalid=5832, Unknown=0, NotChecked=0, Total=10506 [2023-11-22 21:40:08,569 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 21:40:08,570 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 21:40:08,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2023-11-22 21:40:08,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 902. [2023-11-22 21:40:08,587 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 21:40:08,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1205 transitions. [2023-11-22 21:40:08,588 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1205 transitions. Word has length 396 [2023-11-22 21:40:08,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:40:08,589 INFO L495 AbstractCegarLoop]: Abstraction has 902 states and 1205 transitions. [2023-11-22 21:40:08,589 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 21:40:08,589 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1205 transitions. [2023-11-22 21:40:08,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-11-22 21:40:08,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:40:08,593 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 21:40:08,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-22 21:40:08,805 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 21:40:08,806 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:40:08,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:40:08,807 INFO L85 PathProgramCache]: Analyzing trace with hash 41113152, now seen corresponding path program 1 times [2023-11-22 21:40:08,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:40:08,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744552440] [2023-11-22 21:40:08,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:40:08,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:40:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:15,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:40:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:15,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 21:40:15,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:15,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-11-22 21:40:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:15,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-11-22 21:40:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:15,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2023-11-22 21:40:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:15,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2023-11-22 21:40:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:15,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:40:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:15,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:40:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:15,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2023-11-22 21:40:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:15,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2023-11-22 21:40:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:15,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2023-11-22 21:40:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:15,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2023-11-22 21:40:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:15,569 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 21:40:15,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:40:15,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744552440] [2023-11-22 21:40:15,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744552440] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:40:15,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214533718] [2023-11-22 21:40:15,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:40:15,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:40:15,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:40:15,576 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 21:40:15,578 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 21:40:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:16,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 2938 conjuncts, 96 conjunts are in the unsatisfiable core [2023-11-22 21:40:16,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:40:16,768 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 21:40:16,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:40:23,481 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 21:40:23,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214533718] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:40:23,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:40:23,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 97, 97] total 198 [2023-11-22 21:40:23,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042008777] [2023-11-22 21:40:23,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:40:23,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 198 states [2023-11-22 21:40:23,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:40:23,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2023-11-22 21:40:23,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18544, Invalid=20462, Unknown=0, NotChecked=0, Total=39006 [2023-11-22 21:40:23,502 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 21:40:28,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:40:28,246 INFO L93 Difference]: Finished difference Result 2372 states and 3367 transitions. [2023-11-22 21:40:28,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2023-11-22 21:40:28,247 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 21:40:28,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:40:28,250 INFO L225 Difference]: With dead ends: 2372 [2023-11-22 21:40:28,251 INFO L226 Difference]: Without dead ends: 1497 [2023-11-22 21:40:28,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1523 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=18556, Invalid=21244, Unknown=0, NotChecked=0, Total=39800 [2023-11-22 21:40:28,254 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 951 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-22 21:40:28,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 1386 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-22 21:40:28,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2023-11-22 21:40:28,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1478. [2023-11-22 21:40:28,275 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 21:40:28,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 1973 transitions. [2023-11-22 21:40:28,278 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 1973 transitions. Word has length 396 [2023-11-22 21:40:28,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:40:28,278 INFO L495 AbstractCegarLoop]: Abstraction has 1478 states and 1973 transitions. [2023-11-22 21:40:28,279 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 21:40:28,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 1973 transitions. [2023-11-22 21:40:28,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 685 [2023-11-22 21:40:28,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:40:28,283 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 21:40:28,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-22 21:40:28,496 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 21:40:28,497 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:40:28,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:40:28,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1476325952, now seen corresponding path program 2 times [2023-11-22 21:40:28,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:40:28,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753508114] [2023-11-22 21:40:28,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:40:28,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:40:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:52,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:40:52,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:52,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 21:40:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:52,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 593 [2023-11-22 21:40:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:52,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2023-11-22 21:40:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:52,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2023-11-22 21:40:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:52,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2023-11-22 21:40:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:52,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:40:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:52,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:40:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:52,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2023-11-22 21:40:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:52,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 650 [2023-11-22 21:40:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:52,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2023-11-22 21:40:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:53,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 665 [2023-11-22 21:40:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:40:53,150 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 21:40:53,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:40:53,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753508114] [2023-11-22 21:40:53,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753508114] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:40:53,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011560581] [2023-11-22 21:40:53,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 21:40:53,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:40:53,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:40:53,166 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 21:40:53,170 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 21:40:53,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 21:40:53,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 21:40:53,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 21:40:53,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:40:54,141 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 21:40:54,141 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 21:40:54,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011560581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:40:54,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 21:40:54,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [198] total 201 [2023-11-22 21:40:54,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382433120] [2023-11-22 21:40:54,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:40:54,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 21:40:54,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:40:54,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 21:40:54,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18550, Invalid=21650, Unknown=0, NotChecked=0, Total=40200 [2023-11-22 21:40:54,149 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 21:40:54,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:40:54,367 INFO L93 Difference]: Finished difference Result 2937 states and 3927 transitions. [2023-11-22 21:40:54,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 21:40:54,367 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 21:40:54,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:40:54,374 INFO L225 Difference]: With dead ends: 2937 [2023-11-22 21:40:54,374 INFO L226 Difference]: Without dead ends: 1482 [2023-11-22 21:40:54,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 701 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=18554, Invalid=22048, Unknown=0, NotChecked=0, Total=40602 [2023-11-22 21:40:54,383 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 21:40:54,383 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 21:40:54,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2023-11-22 21:40:54,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1480. [2023-11-22 21:40:54,411 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 21:40:54,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 1975 transitions. [2023-11-22 21:40:54,413 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 1975 transitions. Word has length 684 [2023-11-22 21:40:54,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:40:54,414 INFO L495 AbstractCegarLoop]: Abstraction has 1480 states and 1975 transitions. [2023-11-22 21:40:54,414 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 21:40:54,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 1975 transitions. [2023-11-22 21:40:54,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-22 21:40:54,418 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:40:54,418 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 21:40:54,431 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 21:40:54,631 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 21:40:54,631 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:40:54,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:40:54,632 INFO L85 PathProgramCache]: Analyzing trace with hash -435771024, now seen corresponding path program 1 times [2023-11-22 21:40:54,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:40:54,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352696618] [2023-11-22 21:40:54,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:40:54,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:40:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:19,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:41:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:19,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 21:41:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:19,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 593 [2023-11-22 21:41:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:19,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2023-11-22 21:41:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:19,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2023-11-22 21:41:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:20,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2023-11-22 21:41:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:20,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:41:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:20,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:41:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:20,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2023-11-22 21:41:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:20,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 650 [2023-11-22 21:41:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:20,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2023-11-22 21:41:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:20,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 666 [2023-11-22 21:41:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:20,549 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 21:41:20,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:41:20,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352696618] [2023-11-22 21:41:20,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352696618] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:41:20,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632480584] [2023-11-22 21:41:20,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:41:20,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:41:20,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:41:20,552 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 21:41:20,552 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 21:41:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:21,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 5036 conjuncts, 192 conjunts are in the unsatisfiable core [2023-11-22 21:41:22,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:41:22,597 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 21:41:22,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:41:39,940 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 21:41:39,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632480584] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:41:39,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:41:39,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [198, 193, 193] total 264 [2023-11-22 21:41:39,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785417922] [2023-11-22 21:41:39,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:41:39,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 264 states [2023-11-22 21:41:39,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:41:39,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 264 interpolants. [2023-11-22 21:41:39,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33427, Invalid=36005, Unknown=0, NotChecked=0, Total=69432 [2023-11-22 21:41:39,950 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 21:41:52,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:41:52,436 INFO L93 Difference]: Finished difference Result 3342 states and 4597 transitions. [2023-11-22 21:41:52,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 263 states. [2023-11-22 21:41:52,437 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 21:41:52,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:41:52,443 INFO L225 Difference]: With dead ends: 3342 [2023-11-22 21:41:52,443 INFO L226 Difference]: Without dead ends: 1889 [2023-11-22 21:41:52,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1589 GetRequests, 1199 SyntacticMatches, 126 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18242 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=33439, Invalid=37051, Unknown=0, NotChecked=0, Total=70490 [2023-11-22 21:41:52,447 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 1370 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-22 21:41:52,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1371 Valid, 1139 Invalid, 1367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-22 21:41:52,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2023-11-22 21:41:52,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1876. [2023-11-22 21:41:52,521 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 21:41:52,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1876 states to 1876 states and 2503 transitions. [2023-11-22 21:41:52,541 INFO L78 Accepts]: Start accepts. Automaton has 1876 states and 2503 transitions. Word has length 685 [2023-11-22 21:41:52,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:41:52,542 INFO L495 AbstractCegarLoop]: Abstraction has 1876 states and 2503 transitions. [2023-11-22 21:41:52,543 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 21:41:52,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 2503 transitions. [2023-11-22 21:41:52,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 884 [2023-11-22 21:41:52,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:41:52,552 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 21:41:52,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-22 21:41:52,752 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 21:41:52,753 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:41:52,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:41:52,753 INFO L85 PathProgramCache]: Analyzing trace with hash -981709264, now seen corresponding path program 2 times [2023-11-22 21:41:52,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:41:52,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706091555] [2023-11-22 21:41:52,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:41:52,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:41:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:54,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:41:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:54,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 21:41:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:54,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 791 [2023-11-22 21:41:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:54,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 797 [2023-11-22 21:41:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:54,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 811 [2023-11-22 21:41:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:55,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2023-11-22 21:41:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:55,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:41:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:55,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:41:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:55,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 840 [2023-11-22 21:41:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:55,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 848 [2023-11-22 21:41:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:55,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2023-11-22 21:41:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:55,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 864 [2023-11-22 21:41:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:55,267 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 21:41:55,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:41:55,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706091555] [2023-11-22 21:41:55,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706091555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:41:55,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:41:55,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-22 21:41:55,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661600950] [2023-11-22 21:41:55,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:41:55,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-22 21:41:55,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:41:55,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-22 21:41:55,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-22 21:41:55,269 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 21:41:57,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:41:57,112 INFO L93 Difference]: Finished difference Result 3778 states and 5049 transitions. [2023-11-22 21:41:57,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-22 21:41:57,112 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 21:41:57,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:41:57,143 INFO L225 Difference]: With dead ends: 3778 [2023-11-22 21:41:57,143 INFO L226 Difference]: Without dead ends: 2847 [2023-11-22 21:41:57,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=243, Invalid=813, Unknown=0, NotChecked=0, Total=1056 [2023-11-22 21:41:57,146 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 722 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-22 21:41:57,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 1414 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-22 21:41:57,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2023-11-22 21:41:57,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 2806. [2023-11-22 21:41:57,234 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 21:41:57,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2806 states to 2806 states and 3747 transitions. [2023-11-22 21:41:57,240 INFO L78 Accepts]: Start accepts. Automaton has 2806 states and 3747 transitions. Word has length 883 [2023-11-22 21:41:57,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:41:57,257 INFO L495 AbstractCegarLoop]: Abstraction has 2806 states and 3747 transitions. [2023-11-22 21:41:57,257 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 21:41:57,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2806 states and 3747 transitions. [2023-11-22 21:41:57,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2023-11-22 21:41:57,266 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:41:57,266 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 21:41:57,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-22 21:41:57,267 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:41:57,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:41:57,267 INFO L85 PathProgramCache]: Analyzing trace with hash -131540451, now seen corresponding path program 1 times [2023-11-22 21:41:57,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:41:57,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675422186] [2023-11-22 21:41:57,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:41:57,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:41:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:58,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:41:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:58,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 21:41:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:58,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 791 [2023-11-22 21:41:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:58,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 797 [2023-11-22 21:41:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:58,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 811 [2023-11-22 21:41:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:58,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2023-11-22 21:41:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:58,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:41:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:58,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:41:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:58,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 840 [2023-11-22 21:41:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:58,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 848 [2023-11-22 21:41:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:58,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2023-11-22 21:41:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:58,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 864 [2023-11-22 21:41:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:41:58,972 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 21:41:58,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:41:58,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675422186] [2023-11-22 21:41:58,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675422186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:41:58,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:41:58,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-22 21:41:58,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272344350] [2023-11-22 21:41:58,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:41:58,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 21:41:58,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:41:58,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 21:41:58,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-22 21:41:58,974 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 21:41:59,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:41:59,604 INFO L93 Difference]: Finished difference Result 4684 states and 6266 transitions. [2023-11-22 21:41:59,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 21:41:59,617 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 21:41:59,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:41:59,624 INFO L225 Difference]: With dead ends: 4684 [2023-11-22 21:41:59,624 INFO L226 Difference]: Without dead ends: 2826 [2023-11-22 21:41:59,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2023-11-22 21:41:59,634 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 81 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 21:41:59,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 640 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 21:41:59,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2023-11-22 21:41:59,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 2806. [2023-11-22 21:41:59,737 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 21:41:59,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2806 states to 2806 states and 3745 transitions. [2023-11-22 21:41:59,741 INFO L78 Accepts]: Start accepts. Automaton has 2806 states and 3745 transitions. Word has length 884 [2023-11-22 21:41:59,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:41:59,742 INFO L495 AbstractCegarLoop]: Abstraction has 2806 states and 3745 transitions. [2023-11-22 21:41:59,742 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 21:41:59,742 INFO L276 IsEmpty]: Start isEmpty. Operand 2806 states and 3745 transitions. [2023-11-22 21:41:59,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2023-11-22 21:41:59,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:41:59,749 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 21:41:59,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-22 21:41:59,749 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:41:59,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:41:59,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1525539434, now seen corresponding path program 1 times [2023-11-22 21:41:59,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:41:59,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812989449] [2023-11-22 21:41:59,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:41:59,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:42:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:02,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:42:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:02,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 21:42:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:02,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 791 [2023-11-22 21:42:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:02,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 797 [2023-11-22 21:42:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:02,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 811 [2023-11-22 21:42:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:02,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2023-11-22 21:42:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:02,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:42:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:02,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:42:02,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:02,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 840 [2023-11-22 21:42:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:02,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 848 [2023-11-22 21:42:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:02,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2023-11-22 21:42:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:02,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 864 [2023-11-22 21:42:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:02,570 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 21:42:02,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:42:02,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812989449] [2023-11-22 21:42:02,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812989449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:42:02,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:42:02,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-22 21:42:02,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840718795] [2023-11-22 21:42:02,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:42:02,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 21:42:02,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:42:02,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 21:42:02,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-22 21:42:02,573 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 21:42:03,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:42:03,182 INFO L93 Difference]: Finished difference Result 5695 states and 7633 transitions. [2023-11-22 21:42:03,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 21:42:03,183 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 21:42:03,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:42:03,189 INFO L225 Difference]: With dead ends: 5695 [2023-11-22 21:42:03,189 INFO L226 Difference]: Without dead ends: 2916 [2023-11-22 21:42:03,192 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 21:42:03,193 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 220 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 21:42:03,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 698 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 21:42:03,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2023-11-22 21:42:03,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2866. [2023-11-22 21:42:03,243 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 21:42:03,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 3832 transitions. [2023-11-22 21:42:03,246 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 3832 transitions. Word has length 886 [2023-11-22 21:42:03,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:42:03,247 INFO L495 AbstractCegarLoop]: Abstraction has 2866 states and 3832 transitions. [2023-11-22 21:42:03,247 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 21:42:03,247 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 3832 transitions. [2023-11-22 21:42:03,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2023-11-22 21:42:03,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:42:03,254 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 21:42:03,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-22 21:42:03,254 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:42:03,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:42:03,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1802077208, now seen corresponding path program 1 times [2023-11-22 21:42:03,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:42:03,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478334845] [2023-11-22 21:42:03,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:42:03,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:42:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:04,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:42:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:04,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 21:42:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:04,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 791 [2023-11-22 21:42:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:04,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 797 [2023-11-22 21:42:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:04,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 811 [2023-11-22 21:42:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:05,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2023-11-22 21:42:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:05,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:42:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:05,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:42:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:05,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 840 [2023-11-22 21:42:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:05,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 848 [2023-11-22 21:42:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:05,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2023-11-22 21:42:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:05,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 864 [2023-11-22 21:42:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:05,329 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 21:42:05,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:42:05,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478334845] [2023-11-22 21:42:05,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478334845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:42:05,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:42:05,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 21:42:05,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135246725] [2023-11-22 21:42:05,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:42:05,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 21:42:05,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:42:05,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 21:42:05,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:42:05,331 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 21:42:05,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:42:05,925 INFO L93 Difference]: Finished difference Result 5739 states and 7690 transitions. [2023-11-22 21:42:05,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 21:42:05,925 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 21:42:05,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:42:05,931 INFO L225 Difference]: With dead ends: 5739 [2023-11-22 21:42:05,931 INFO L226 Difference]: Without dead ends: 2887 [2023-11-22 21:42:05,933 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 21:42:05,934 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 112 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 21:42:05,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 601 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 21:42:05,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2023-11-22 21:42:05,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 2867. [2023-11-22 21:42:05,978 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 21:42:05,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2867 states to 2867 states and 3833 transitions. [2023-11-22 21:42:05,981 INFO L78 Accepts]: Start accepts. Automaton has 2867 states and 3833 transitions. Word has length 886 [2023-11-22 21:42:05,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:42:05,982 INFO L495 AbstractCegarLoop]: Abstraction has 2867 states and 3833 transitions. [2023-11-22 21:42:05,982 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 21:42:05,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 3833 transitions. [2023-11-22 21:42:05,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2023-11-22 21:42:05,988 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:42:05,988 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 21:42:05,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-22 21:42:05,989 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:42:05,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:42:05,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1839944646, now seen corresponding path program 1 times [2023-11-22 21:42:05,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:42:05,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053839262] [2023-11-22 21:42:05,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:42:05,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:42:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:07,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:42:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:07,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:42:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:07,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2023-11-22 21:42:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:07,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 798 [2023-11-22 21:42:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:07,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 812 [2023-11-22 21:42:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:08,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 818 [2023-11-22 21:42:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:08,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:42:08,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:08,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:42:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:08,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2023-11-22 21:42:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:08,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2023-11-22 21:42:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:08,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 856 [2023-11-22 21:42:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:08,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 865 [2023-11-22 21:42:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:08,266 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 21:42:08,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:42:08,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053839262] [2023-11-22 21:42:08,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053839262] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:42:08,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810062679] [2023-11-22 21:42:08,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:42:08,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:42:08,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:42:08,269 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 21:42:08,286 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 21:42:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:10,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 6446 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 21:42:10,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:42:10,663 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 21:42:10,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:42:10,724 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 21:42:10,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810062679] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 21:42:10,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 21:42:10,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11, 5] total 12 [2023-11-22 21:42:10,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240303475] [2023-11-22 21:42:10,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:42:10,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:42:10,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:42:10,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:42:10,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-22 21:42:10,726 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 21:42:10,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:42:10,822 INFO L93 Difference]: Finished difference Result 5709 states and 7644 transitions. [2023-11-22 21:42:10,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 21:42:10,822 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 21:42:10,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:42:10,842 INFO L225 Difference]: With dead ends: 5709 [2023-11-22 21:42:10,842 INFO L226 Difference]: Without dead ends: 2870 [2023-11-22 21:42:10,845 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 21:42:10,846 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 3 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:42:10,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 326 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:42:10,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2023-11-22 21:42:10,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 2870. [2023-11-22 21:42:10,897 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 21:42:10,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 3836 transitions. [2023-11-22 21:42:10,900 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 3836 transitions. Word has length 887 [2023-11-22 21:42:10,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:42:10,901 INFO L495 AbstractCegarLoop]: Abstraction has 2870 states and 3836 transitions. [2023-11-22 21:42:10,901 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 21:42:10,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 3836 transitions. [2023-11-22 21:42:10,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2023-11-22 21:42:10,907 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:42:10,907 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 21:42:10,938 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 21:42:11,120 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 21:42:11,120 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:42:11,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:42:11,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1086477460, now seen corresponding path program 1 times [2023-11-22 21:42:11,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:42:11,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416868898] [2023-11-22 21:42:11,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:42:11,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:42:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:13,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:42:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:13,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:42:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:13,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2023-11-22 21:42:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:13,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 798 [2023-11-22 21:42:13,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:13,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 812 [2023-11-22 21:42:13,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:13,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 818 [2023-11-22 21:42:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:13,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:42:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:13,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:42:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:13,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2023-11-22 21:42:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:13,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2023-11-22 21:42:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:13,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 856 [2023-11-22 21:42:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:13,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 866 [2023-11-22 21:42:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:13,556 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 21:42:13,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:42:13,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416868898] [2023-11-22 21:42:13,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416868898] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:42:13,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709291264] [2023-11-22 21:42:13,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:42:13,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:42:13,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:42:13,558 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 21:42:13,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-22 21:42:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:29,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 6465 conjuncts, 113 conjunts are in the unsatisfiable core [2023-11-22 21:42:29,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:42:29,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-22 21:42:29,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-22 21:42:30,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-11-22 21:42:30,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-22 21:42:30,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-22 21:42:30,468 INFO L134 CoverageAnalysis]: Checked inductivity of 98218 backedges. 17 proven. 12 refuted. 0 times theorem prover too weak. 98189 trivial. 0 not checked. [2023-11-22 21:42:30,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:42:30,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2023-11-22 21:42:30,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 46 [2023-11-22 21:42:30,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-11-22 21:42:30,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2023-11-22 21:42:31,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2023-11-22 21:42:31,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2023-11-22 21:42:31,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 50 [2023-11-22 21:42:31,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 119 [2023-11-22 21:42:31,915 INFO L134 CoverageAnalysis]: Checked inductivity of 98218 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 98209 trivial. 0 not checked. [2023-11-22 21:42:31,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709291264] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 21:42:31,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 21:42:31,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [11, 25] total 46 [2023-11-22 21:42:31,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560372865] [2023-11-22 21:42:31,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:42:31,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-22 21:42:31,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:42:31,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-22 21:42:31,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1918, Unknown=0, NotChecked=0, Total=2070 [2023-11-22 21:42:31,917 INFO L87 Difference]: Start difference. First operand 2870 states and 3836 transitions. Second operand has 15 states, 14 states have (on average 6.142857142857143) internal successors, (86), 13 states have internal predecessors, (86), 7 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-22 21:42:33,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:42:33,351 INFO L93 Difference]: Finished difference Result 4837 states and 6468 transitions. [2023-11-22 21:42:33,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-22 21:42:33,352 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.142857142857143) internal successors, (86), 13 states have internal predecessors, (86), 7 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 888 [2023-11-22 21:42:33,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:42:33,360 INFO L225 Difference]: With dead ends: 4837 [2023-11-22 21:42:33,361 INFO L226 Difference]: Without dead ends: 2937 [2023-11-22 21:42:33,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1817 GetRequests, 1761 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=239, Invalid=3067, Unknown=0, NotChecked=0, Total=3306 [2023-11-22 21:42:33,365 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 285 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:42:33,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1479 Invalid, 1333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-22 21:42:33,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2023-11-22 21:42:33,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2905. [2023-11-22 21:42:33,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2905 states, 2776 states have (on average 1.3285302593659942) internal successors, (3688), 2776 states have internal predecessors, (3688), 86 states have call successors, (86), 33 states have call predecessors, (86), 42 states have return successors, (108), 95 states have call predecessors, (108), 85 states have call successors, (108) [2023-11-22 21:42:33,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2905 states to 2905 states and 3882 transitions. [2023-11-22 21:42:33,429 INFO L78 Accepts]: Start accepts. Automaton has 2905 states and 3882 transitions. Word has length 888 [2023-11-22 21:42:33,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:42:33,431 INFO L495 AbstractCegarLoop]: Abstraction has 2905 states and 3882 transitions. [2023-11-22 21:42:33,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.142857142857143) internal successors, (86), 13 states have internal predecessors, (86), 7 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-22 21:42:33,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2905 states and 3882 transitions. [2023-11-22 21:42:33,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2023-11-22 21:42:33,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:42:33,438 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, 1, 1, 1, 1, 1] [2023-11-22 21:42:33,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-22 21:42:33,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-22 21:42:33,643 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:42:33,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:42:33,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1017720309, now seen corresponding path program 1 times [2023-11-22 21:42:33,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:42:33,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237599801] [2023-11-22 21:42:33,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:42:33,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:42:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:35,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:42:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:35,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:42:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:35,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2023-11-22 21:42:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:35,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 798 [2023-11-22 21:42:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:35,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 812 [2023-11-22 21:42:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:35,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 818 [2023-11-22 21:42:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:35,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:42:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:35,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:42:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:35,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2023-11-22 21:42:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:35,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2023-11-22 21:42:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:35,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 856 [2023-11-22 21:42:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:35,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 866 [2023-11-22 21:42:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:35,931 INFO L134 CoverageAnalysis]: Checked inductivity of 98216 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 98208 trivial. 0 not checked. [2023-11-22 21:42:35,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:42:35,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237599801] [2023-11-22 21:42:35,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237599801] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:42:35,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146652190] [2023-11-22 21:42:35,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:42:35,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:42:35,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:42:35,933 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:42:35,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-22 21:42:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:38,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 6469 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-22 21:42:38,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:42:39,225 INFO L134 CoverageAnalysis]: Checked inductivity of 98216 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 98200 trivial. 0 not checked. [2023-11-22 21:42:39,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:42:40,109 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 21:42:40,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146652190] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 21:42:40,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 21:42:40,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 8] total 21 [2023-11-22 21:42:40,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068148] [2023-11-22 21:42:40,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:42:40,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 21:42:40,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:42:40,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 21:42:40,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2023-11-22 21:42:40,111 INFO L87 Difference]: Start difference. First operand 2905 states and 3882 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-22 21:42:40,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:42:40,733 INFO L93 Difference]: Finished difference Result 6765 states and 9039 transitions. [2023-11-22 21:42:40,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-22 21:42:40,733 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 889 [2023-11-22 21:42:40,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:42:40,744 INFO L225 Difference]: With dead ends: 6765 [2023-11-22 21:42:40,745 INFO L226 Difference]: Without dead ends: 4844 [2023-11-22 21:42:40,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1817 GetRequests, 1788 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=751, Unknown=0, NotChecked=0, Total=870 [2023-11-22 21:42:40,749 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 696 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 21:42:40,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 1012 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 21:42:40,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4844 states. [2023-11-22 21:42:40,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4844 to 4824. [2023-11-22 21:42:40,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4824 states, 4612 states have (on average 1.328707718993929) internal successors, (6128), 4613 states have internal predecessors, (6128), 137 states have call successors, (137), 58 states have call predecessors, (137), 74 states have return successors, (174), 152 states have call predecessors, (174), 136 states have call successors, (174) [2023-11-22 21:42:40,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4824 states to 4824 states and 6439 transitions. [2023-11-22 21:42:40,852 INFO L78 Accepts]: Start accepts. Automaton has 4824 states and 6439 transitions. Word has length 889 [2023-11-22 21:42:40,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:42:40,853 INFO L495 AbstractCegarLoop]: Abstraction has 4824 states and 6439 transitions. [2023-11-22 21:42:40,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-22 21:42:40,853 INFO L276 IsEmpty]: Start isEmpty. Operand 4824 states and 6439 transitions. [2023-11-22 21:42:40,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 948 [2023-11-22 21:42:40,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:42:40,860 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:42:40,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-22 21:42:41,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:42:41,088 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:42:41,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:42:41,089 INFO L85 PathProgramCache]: Analyzing trace with hash -520158284, now seen corresponding path program 1 times [2023-11-22 21:42:41,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:42:41,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986773775] [2023-11-22 21:42:41,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:42:41,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:42:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:43,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:42:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:43,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:42:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:43,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2023-11-22 21:42:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:43,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 798 [2023-11-22 21:42:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:43,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 812 [2023-11-22 21:42:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:43,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 818 [2023-11-22 21:42:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:43,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:42:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:43,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:42:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:43,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2023-11-22 21:42:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:43,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2023-11-22 21:42:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:43,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 856 [2023-11-22 21:42:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:43,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 866 [2023-11-22 21:42:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:43,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 886 [2023-11-22 21:42:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:43,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 892 [2023-11-22 21:42:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:43,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:42:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:43,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 907 [2023-11-22 21:42:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:43,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 914 [2023-11-22 21:42:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:43,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 924 [2023-11-22 21:42:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:43,872 INFO L134 CoverageAnalysis]: Checked inductivity of 98300 backedges. 42 proven. 9 refuted. 0 times theorem prover too weak. 98249 trivial. 0 not checked. [2023-11-22 21:42:43,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:42:43,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986773775] [2023-11-22 21:42:43,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986773775] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:42:43,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571000174] [2023-11-22 21:42:43,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:42:43,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:42:43,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:42:43,874 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:42:43,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-22 21:42:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:46,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 7051 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-22 21:42:46,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:42:47,101 INFO L134 CoverageAnalysis]: Checked inductivity of 98300 backedges. 53 proven. 23 refuted. 0 times theorem prover too weak. 98224 trivial. 0 not checked. [2023-11-22 21:42:47,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:42:48,041 INFO L134 CoverageAnalysis]: Checked inductivity of 98300 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 98265 trivial. 0 not checked. [2023-11-22 21:42:48,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571000174] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:42:48,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:42:48,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 10] total 25 [2023-11-22 21:42:48,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895424201] [2023-11-22 21:42:48,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:42:48,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-22 21:42:48,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:42:48,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-22 21:42:48,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2023-11-22 21:42:48,045 INFO L87 Difference]: Start difference. First operand 4824 states and 6439 transitions. Second operand has 25 states, 25 states have (on average 8.96) internal successors, (224), 20 states have internal predecessors, (224), 7 states have call successors, (45), 12 states have call predecessors, (45), 11 states have return successors, (41), 7 states have call predecessors, (41), 6 states have call successors, (41) [2023-11-22 21:42:51,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:42:51,300 INFO L93 Difference]: Finished difference Result 12495 states and 16771 transitions. [2023-11-22 21:42:51,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-11-22 21:42:51,301 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.96) internal successors, (224), 20 states have internal predecessors, (224), 7 states have call successors, (45), 12 states have call predecessors, (45), 11 states have return successors, (41), 7 states have call predecessors, (41), 6 states have call successors, (41) Word has length 947 [2023-11-22 21:42:51,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:42:51,311 INFO L225 Difference]: With dead ends: 12495 [2023-11-22 21:42:51,311 INFO L226 Difference]: Without dead ends: 8697 [2023-11-22 21:42:51,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1980 GetRequests, 1917 SyntacticMatches, 5 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=852, Invalid=2688, Unknown=0, NotChecked=0, Total=3540 [2023-11-22 21:42:51,315 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 792 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:42:51,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 1626 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-22 21:42:51,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8697 states. [2023-11-22 21:42:51,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8697 to 8629. [2023-11-22 21:42:51,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8629 states, 8262 states have (on average 1.3299443234083757) internal successors, (10988), 8266 states have internal predecessors, (10988), 237 states have call successors, (237), 98 states have call predecessors, (237), 129 states have return successors, (316), 264 states have call predecessors, (316), 236 states have call successors, (316) [2023-11-22 21:42:51,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8629 states to 8629 states and 11541 transitions. [2023-11-22 21:42:51,492 INFO L78 Accepts]: Start accepts. Automaton has 8629 states and 11541 transitions. Word has length 947 [2023-11-22 21:42:51,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:42:51,493 INFO L495 AbstractCegarLoop]: Abstraction has 8629 states and 11541 transitions. [2023-11-22 21:42:51,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.96) internal successors, (224), 20 states have internal predecessors, (224), 7 states have call successors, (45), 12 states have call predecessors, (45), 11 states have return successors, (41), 7 states have call predecessors, (41), 6 states have call successors, (41) [2023-11-22 21:42:51,494 INFO L276 IsEmpty]: Start isEmpty. Operand 8629 states and 11541 transitions. [2023-11-22 21:42:51,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 960 [2023-11-22 21:42:51,501 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:42:51,502 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:42:51,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-22 21:42:51,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-22 21:42:51,719 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:42:51,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:42:51,720 INFO L85 PathProgramCache]: Analyzing trace with hash 322942303, now seen corresponding path program 1 times [2023-11-22 21:42:51,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:42:51,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093662758] [2023-11-22 21:42:51,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:42:51,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:42:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:54,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:42:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:54,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:42:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:54,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2023-11-22 21:42:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:54,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 798 [2023-11-22 21:42:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:54,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 812 [2023-11-22 21:42:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:54,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 818 [2023-11-22 21:42:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:54,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:42:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:54,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:42:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:54,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2023-11-22 21:42:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:54,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2023-11-22 21:42:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:54,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 856 [2023-11-22 21:42:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:54,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 866 [2023-11-22 21:42:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:54,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 886 [2023-11-22 21:42:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:54,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 892 [2023-11-22 21:42:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:54,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:42:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:54,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:42:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:54,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 915 [2023-11-22 21:42:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:54,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 923 [2023-11-22 21:42:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:54,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 930 [2023-11-22 21:42:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:54,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 940 [2023-11-22 21:42:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:54,372 INFO L134 CoverageAnalysis]: Checked inductivity of 98320 backedges. 48 proven. 5 refuted. 0 times theorem prover too weak. 98267 trivial. 0 not checked. [2023-11-22 21:42:54,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:42:54,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093662758] [2023-11-22 21:42:54,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093662758] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:42:54,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274650855] [2023-11-22 21:42:54,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:42:54,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:42:54,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:42:54,374 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:42:54,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-22 21:42:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:42:57,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 7139 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-22 21:42:57,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:42:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 98320 backedges. 24 proven. 16 refuted. 0 times theorem prover too weak. 98280 trivial. 0 not checked. [2023-11-22 21:42:58,007 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:42:58,962 INFO L134 CoverageAnalysis]: Checked inductivity of 98320 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 98304 trivial. 0 not checked. [2023-11-22 21:42:58,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274650855] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:42:58,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:42:58,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 10] total 23 [2023-11-22 21:42:58,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934218670] [2023-11-22 21:42:58,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:42:58,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-22 21:42:58,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:42:58,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-22 21:42:58,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2023-11-22 21:42:58,965 INFO L87 Difference]: Start difference. First operand 8629 states and 11541 transitions. Second operand has 23 states, 23 states have (on average 8.608695652173912) internal successors, (198), 18 states have internal predecessors, (198), 7 states have call successors, (40), 12 states have call predecessors, (40), 9 states have return successors, (35), 7 states have call predecessors, (35), 6 states have call successors, (35) [2023-11-22 21:43:00,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:43:00,574 INFO L93 Difference]: Finished difference Result 14388 states and 19316 transitions. [2023-11-22 21:43:00,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-22 21:43:00,575 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 8.608695652173912) internal successors, (198), 18 states have internal predecessors, (198), 7 states have call successors, (40), 12 states have call predecessors, (40), 9 states have return successors, (35), 7 states have call predecessors, (35), 6 states have call successors, (35) Word has length 959 [2023-11-22 21:43:00,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:43:00,590 INFO L225 Difference]: With dead ends: 14388 [2023-11-22 21:43:00,590 INFO L226 Difference]: Without dead ends: 8678 [2023-11-22 21:43:00,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1988 GetRequests, 1944 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=443, Invalid=1197, Unknown=0, NotChecked=0, Total=1640 [2023-11-22 21:43:00,602 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 647 mSDsluCounter, 1750 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 1977 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-22 21:43:00,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 1977 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-22 21:43:00,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8678 states. [2023-11-22 21:43:00,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8678 to 8624. [2023-11-22 21:43:00,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8624 states, 8258 states have (on average 1.3298619520465003) internal successors, (10982), 8261 states have internal predecessors, (10982), 237 states have call successors, (237), 98 states have call predecessors, (237), 128 states have return successors, (320), 264 states have call predecessors, (320), 236 states have call successors, (320) [2023-11-22 21:43:00,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8624 states to 8624 states and 11539 transitions. [2023-11-22 21:43:00,837 INFO L78 Accepts]: Start accepts. Automaton has 8624 states and 11539 transitions. Word has length 959 [2023-11-22 21:43:00,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:43:00,839 INFO L495 AbstractCegarLoop]: Abstraction has 8624 states and 11539 transitions. [2023-11-22 21:43:00,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.608695652173912) internal successors, (198), 18 states have internal predecessors, (198), 7 states have call successors, (40), 12 states have call predecessors, (40), 9 states have return successors, (35), 7 states have call predecessors, (35), 6 states have call successors, (35) [2023-11-22 21:43:00,839 INFO L276 IsEmpty]: Start isEmpty. Operand 8624 states and 11539 transitions. [2023-11-22 21:43:00,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 963 [2023-11-22 21:43:00,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:43:00,847 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:43:00,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-22 21:43:01,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-22 21:43:01,061 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:43:01,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:43:01,061 INFO L85 PathProgramCache]: Analyzing trace with hash 190231559, now seen corresponding path program 1 times [2023-11-22 21:43:01,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:43:01,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575480895] [2023-11-22 21:43:01,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:43:01,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:43:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:43:03,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:43:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:43:03,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 21:43:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:43:03,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2023-11-22 21:43:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:43:03,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 798 [2023-11-22 21:43:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:43:03,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 812 [2023-11-22 21:43:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:43:03,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 818 [2023-11-22 21:43:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:43:03,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:43:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:43:03,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:43:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:43:03,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2023-11-22 21:43:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:43:03,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2023-11-22 21:43:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:43:03,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 856 [2023-11-22 21:43:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:43:03,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 866 [2023-11-22 21:43:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:43:03,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 886 [2023-11-22 21:43:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:43:03,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 892 [2023-11-22 21:43:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:43:03,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 21:43:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:43:03,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 21:43:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:43:03,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 915 [2023-11-22 21:43:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:43:03,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 923 [2023-11-22 21:43:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:43:03,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 930 [2023-11-22 21:43:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:43:03,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 940 [2023-11-22 21:43:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:43:03,636 INFO L134 CoverageAnalysis]: Checked inductivity of 98325 backedges. 31 proven. 10 refuted. 0 times theorem prover too weak. 98284 trivial. 0 not checked. [2023-11-22 21:43:03,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:43:03,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575480895] [2023-11-22 21:43:03,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575480895] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:43:03,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582451262] [2023-11-22 21:43:03,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:43:03,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:43:03,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:43:03,638 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 21:43:03,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process Killed by 15