./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 false --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 false --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 23:01:59,322 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 23:01:59,362 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-22 23:01:59,366 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 23:01:59,368 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 23:01:59,395 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 23:01:59,416 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 23:01:59,416 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 23:01:59,417 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 23:01:59,417 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 23:01:59,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 23:01:59,417 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 23:01:59,418 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 23:01:59,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 23:01:59,418 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 23:01:59,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 23:01:59,419 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 23:01:59,426 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 23:01:59,426 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 23:01:59,427 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 23:01:59,427 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 23:01:59,438 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 23:01:59,438 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 23:01:59,438 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 23:01:59,439 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 23:01:59,440 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 23:01:59,440 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 23:01:59,440 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 23:01:59,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 23:01:59,441 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 23:01:59,441 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 23:01:59,442 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 23:01:59,442 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 23:01:59,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 23:01:59,442 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 23:01:59,443 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 23:01:59,443 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 23:01:59,443 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 23:01:59,443 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 23:01:59,444 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb4cf2f7b619bb65636b8158cc0f6ae5cf90699f1f1c19bf802021a20c422d2c Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-22 23:01:59,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 23:01:59,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 23:01:59,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 23:01:59,664 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 23:01:59,665 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 23:01:59,665 INFO L431 ainManager$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 23:02:00,794 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 23:02:01,172 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 23:02:01,172 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 23:02:01,206 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb618ce45/297fb615d7604df7909f06c87d4a7294/FLAG4e1ac5d43 [2023-11-22 23:02:01,226 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb618ce45/297fb615d7604df7909f06c87d4a7294 [2023-11-22 23:02:01,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 23:02:01,233 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 23:02:01,234 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 23:02:01,234 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 23:02:01,238 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 23:02:01,239 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:02:01" (1/1) ... [2023-11-22 23:02:01,240 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39422740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:02:01, skipping insertion in model container [2023-11-22 23:02:01,240 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:02:01" (1/1) ... [2023-11-22 23:02:01,318 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 23:02:01,812 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 23:02:01,961 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 23:02:01,980 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 23:02:02,055 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 23:02:02,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 23:02:02,125 INFO L206 MainTranslator]: Completed translation [2023-11-22 23:02:02,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:02:02 WrapperNode [2023-11-22 23:02:02,126 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 23:02:02,127 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 23:02:02,127 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 23:02:02,127 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 23:02:02,132 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:02:02" (1/1) ... [2023-11-22 23:02:02,162 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:02:02" (1/1) ... [2023-11-22 23:02:02,205 INFO L138 Inliner]: procedures = 82, calls = 143, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 483 [2023-11-22 23:02:02,208 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 23:02:02,209 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 23:02:02,209 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 23:02:02,209 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 23:02:02,217 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:02:02" (1/1) ... [2023-11-22 23:02:02,217 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:02:02" (1/1) ... [2023-11-22 23:02:02,233 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:02:02" (1/1) ... [2023-11-22 23:02:02,238 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:02:02" (1/1) ... [2023-11-22 23:02:02,266 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:02:02" (1/1) ... [2023-11-22 23:02:02,281 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:02:02" (1/1) ... [2023-11-22 23:02:02,284 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:02:02" (1/1) ... [2023-11-22 23:02:02,286 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:02:02" (1/1) ... [2023-11-22 23:02:02,290 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 23:02:02,304 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 23:02:02,305 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 23:02:02,305 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 23:02:02,305 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:02:02" (1/1) ... [2023-11-22 23:02:02,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 23:02:02,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:02:02,353 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 23:02:02,370 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 23:02:02,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 23:02:02,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-22 23:02:02,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 23:02:02,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-22 23:02:02,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-22 23:02:02,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-22 23:02:02,399 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-22 23:02:02,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-22 23:02:02,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-22 23:02:02,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-22 23:02:02,399 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2023-11-22 23:02:02,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2023-11-22 23:02:02,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-22 23:02:02,400 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-22 23:02:02,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-22 23:02:02,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-22 23:02:02,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 23:02:02,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-22 23:02:02,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2023-11-22 23:02:02,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2023-11-22 23:02:02,402 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-22 23:02:02,402 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-22 23:02:02,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-22 23:02:02,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-22 23:02:02,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-22 23:02:02,402 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-22 23:02:02,403 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-22 23:02:02,403 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-22 23:02:02,403 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-22 23:02:02,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-22 23:02:02,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-22 23:02:02,404 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2023-11-22 23:02:02,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2023-11-22 23:02:02,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-22 23:02:02,404 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-22 23:02:02,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-22 23:02:02,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 23:02:02,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 23:02:02,672 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 23:02:02,674 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 23:02:02,765 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-22 23:02:03,151 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 23:02:03,201 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 23:02:03,202 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-22 23:02:03,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:02:03 BoogieIcfgContainer [2023-11-22 23:02:03,202 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 23:02:03,204 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 23:02:03,204 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 23:02:03,209 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 23:02:03,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:02:01" (1/3) ... [2023-11-22 23:02:03,212 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d452ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:02:03, skipping insertion in model container [2023-11-22 23:02:03,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:02:02" (2/3) ... [2023-11-22 23:02:03,213 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d452ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:02:03, skipping insertion in model container [2023-11-22 23:02:03,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:02:03" (3/3) ... [2023-11-22 23:02:03,214 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 23:02:03,226 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 23:02:03,227 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 23:02:03,261 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 23:02:03,266 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;@277e8b87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 23:02:03,266 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 23:02:03,269 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 23:02:03,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-22 23:02:03,275 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:02:03,276 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 23:02:03,276 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:02:03,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:02:03,280 INFO L85 PathProgramCache]: Analyzing trace with hash 310174036, now seen corresponding path program 1 times [2023-11-22 23:02:03,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:02:03,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512264039] [2023-11-22 23:02:03,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:02:03,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:02:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:03,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:02:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:03,733 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 23:02:03,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:02:03,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512264039] [2023-11-22 23:02:03,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512264039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:02:03,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:02:03,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 23:02:03,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002445442] [2023-11-22 23:02:03,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:02:03,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:02:03,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:02:03,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:02:03,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:02:03,764 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 23:02:04,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:02:04,182 INFO L93 Difference]: Finished difference Result 453 states and 695 transitions. [2023-11-22 23:02:04,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 23:02:04,184 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 23:02:04,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:02:04,192 INFO L225 Difference]: With dead ends: 453 [2023-11-22 23:02:04,192 INFO L226 Difference]: Without dead ends: 299 [2023-11-22 23:02:04,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 23:02:04,197 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 262 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 377 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 23:02:04,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 377 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 23:02:04,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-11-22 23:02:04,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 257. [2023-11-22 23:02:04,242 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 23:02:04,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 358 transitions. [2023-11-22 23:02:04,245 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 358 transitions. Word has length 18 [2023-11-22 23:02:04,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:02:04,246 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 358 transitions. [2023-11-22 23:02:04,246 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 23:02:04,246 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 358 transitions. [2023-11-22 23:02:04,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-22 23:02:04,248 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:02:04,248 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 23:02:04,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 23:02:04,248 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:02:04,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:02:04,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1929825165, now seen corresponding path program 1 times [2023-11-22 23:02:04,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:02:04,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977969862] [2023-11-22 23:02:04,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:02:04,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:02:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:04,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:02:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:04,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 23:02:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:04,321 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 23:02:04,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:02:04,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977969862] [2023-11-22 23:02:04,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977969862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:02:04,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:02:04,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 23:02:04,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473576110] [2023-11-22 23:02:04,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:02:04,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:02:04,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:02:04,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:02:04,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:02:04,325 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 23:02:04,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:02:04,530 INFO L93 Difference]: Finished difference Result 555 states and 780 transitions. [2023-11-22 23:02:04,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 23:02:04,531 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 23:02:04,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:02:04,533 INFO L225 Difference]: With dead ends: 555 [2023-11-22 23:02:04,533 INFO L226 Difference]: Without dead ends: 302 [2023-11-22 23:02:04,534 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 23:02:04,535 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 43 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 365 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 23:02:04,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 365 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 23:02:04,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-11-22 23:02:04,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 258. [2023-11-22 23:02:04,614 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 23:02:04,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 359 transitions. [2023-11-22 23:02:04,624 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 359 transitions. Word has length 28 [2023-11-22 23:02:04,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:02:04,625 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 359 transitions. [2023-11-22 23:02:04,625 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 23:02:04,625 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 359 transitions. [2023-11-22 23:02:04,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-22 23:02:04,626 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:02:04,627 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 23:02:04,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 23:02:04,627 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:02:04,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:02:04,628 INFO L85 PathProgramCache]: Analyzing trace with hash -307646832, now seen corresponding path program 1 times [2023-11-22 23:02:04,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:02:04,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745929555] [2023-11-22 23:02:04,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:02:04,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:02:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:04,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:02:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:04,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 23:02:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:04,741 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 23:02:04,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:02:04,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745929555] [2023-11-22 23:02:04,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745929555] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:02:04,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237576041] [2023-11-22 23:02:04,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:02:04,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:02:04,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:02:04,783 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 23:02:04,844 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 23:02:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:04,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 23:02:04,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:02:05,000 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 23:02:05,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:02:05,029 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 23:02:05,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237576041] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:02:05,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:02:05,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-11-22 23:02:05,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787925812] [2023-11-22 23:02:05,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:02:05,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 23:02:05,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:02:05,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 23:02:05,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-22 23:02:05,032 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 23:02:05,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:02:05,313 INFO L93 Difference]: Finished difference Result 563 states and 792 transitions. [2023-11-22 23:02:05,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 23:02:05,314 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 23:02:05,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:02:05,316 INFO L225 Difference]: With dead ends: 563 [2023-11-22 23:02:05,316 INFO L226 Difference]: Without dead ends: 309 [2023-11-22 23:02:05,316 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 23:02:05,317 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 49 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 622 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 23:02:05,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 622 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 23:02:05,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-11-22 23:02:05,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 267. [2023-11-22 23:02:05,331 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 23:02:05,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 371 transitions. [2023-11-22 23:02:05,333 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 371 transitions. Word has length 31 [2023-11-22 23:02:05,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:02:05,334 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 371 transitions. [2023-11-22 23:02:05,334 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 23:02:05,334 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 371 transitions. [2023-11-22 23:02:05,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-22 23:02:05,338 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:02:05,339 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 23:02:05,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-22 23:02:05,550 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 23:02:05,551 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:02:05,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:02:05,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1425511885, now seen corresponding path program 2 times [2023-11-22 23:02:05,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:02:05,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388993486] [2023-11-22 23:02:05,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:02:05,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:02:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:05,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:02:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:05,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 23:02:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:05,766 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 23:02:05,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:02:05,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388993486] [2023-11-22 23:02:05,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388993486] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:02:05,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:02:05,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 23:02:05,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223361246] [2023-11-22 23:02:05,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:02:05,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:02:05,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:02:05,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:02:05,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:02:05,769 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 23:02:05,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:02:05,973 INFO L93 Difference]: Finished difference Result 571 states and 799 transitions. [2023-11-22 23:02:05,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 23:02:05,974 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 23:02:05,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:02:05,976 INFO L225 Difference]: With dead ends: 571 [2023-11-22 23:02:05,977 INFO L226 Difference]: Without dead ends: 308 [2023-11-22 23:02:05,977 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 23:02:05,982 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 242 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 232 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 23:02:05,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 232 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 23:02:05,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-22 23:02:06,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 266. [2023-11-22 23:02:06,007 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 23:02:06,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 367 transitions. [2023-11-22 23:02:06,009 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 367 transitions. Word has length 40 [2023-11-22 23:02:06,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:02:06,010 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 367 transitions. [2023-11-22 23:02:06,010 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 23:02:06,011 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 367 transitions. [2023-11-22 23:02:06,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-22 23:02:06,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:02:06,015 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 23:02:06,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-22 23:02:06,015 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:02:06,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:02:06,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1732359685, now seen corresponding path program 1 times [2023-11-22 23:02:06,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:02:06,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541501608] [2023-11-22 23:02:06,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:02:06,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:02:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:06,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:02:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:06,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 23:02:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:06,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-22 23:02:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:06,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 23:02:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:06,193 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 23:02:06,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:02:06,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541501608] [2023-11-22 23:02:06,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541501608] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:02:06,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963940561] [2023-11-22 23:02:06,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:02:06,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:02:06,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:02:06,199 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 23:02:06,201 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 23:02:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:06,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 23:02:06,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:02:06,387 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 23:02:06,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:02:06,455 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 23:02:06,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963940561] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:02:06,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:02:06,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2023-11-22 23:02:06,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376758882] [2023-11-22 23:02:06,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:02:06,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-22 23:02:06,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:02:06,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-22 23:02:06,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2023-11-22 23:02:06,457 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 23:02:06,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:02:06,700 INFO L93 Difference]: Finished difference Result 473 states and 663 transitions. [2023-11-22 23:02:06,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-22 23:02:06,701 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 23:02:06,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:02:06,702 INFO L225 Difference]: With dead ends: 473 [2023-11-22 23:02:06,702 INFO L226 Difference]: Without dead ends: 326 [2023-11-22 23:02:06,703 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 23:02:06,703 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 70 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 23:02:06,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 492 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 23:02:06,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-11-22 23:02:06,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 284. [2023-11-22 23:02:06,712 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 23:02:06,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 391 transitions. [2023-11-22 23:02:06,713 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 391 transitions. Word has length 58 [2023-11-22 23:02:06,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:02:06,714 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 391 transitions. [2023-11-22 23:02:06,714 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 23:02:06,714 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 391 transitions. [2023-11-22 23:02:06,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-22 23:02:06,715 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:02:06,715 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 23:02:06,729 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 23:02:06,927 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 23:02:06,927 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:02:06,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:02:06,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1180086949, now seen corresponding path program 2 times [2023-11-22 23:02:06,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:02:06,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469809929] [2023-11-22 23:02:06,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:02:06,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:02:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:07,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:02:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:07,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 23:02:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:07,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 23:02:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:07,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 23:02:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:07,295 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 23:02:07,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:02:07,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469809929] [2023-11-22 23:02:07,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469809929] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:02:07,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280098030] [2023-11-22 23:02:07,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 23:02:07,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:02:07,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:02:07,297 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 23:02:07,324 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 23:02:07,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 23:02:07,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 23:02:07,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 23:02:07,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:02:07,531 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 23:02:07,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:02:07,726 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 23:02:07,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280098030] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:02:07,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:02:07,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 26 [2023-11-22 23:02:07,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176781383] [2023-11-22 23:02:07,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:02:07,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-22 23:02:07,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:02:07,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-22 23:02:07,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2023-11-22 23:02:07,729 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 23:02:08,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:02:08,043 INFO L93 Difference]: Finished difference Result 527 states and 741 transitions. [2023-11-22 23:02:08,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-22 23:02:08,043 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 23:02:08,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:02:08,045 INFO L225 Difference]: With dead ends: 527 [2023-11-22 23:02:08,045 INFO L226 Difference]: Without dead ends: 362 [2023-11-22 23:02:08,046 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 23:02:08,047 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 107 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 23:02:08,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 754 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 23:02:08,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-11-22 23:02:08,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 320. [2023-11-22 23:02:08,064 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 23:02:08,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 439 transitions. [2023-11-22 23:02:08,065 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 439 transitions. Word has length 76 [2023-11-22 23:02:08,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:02:08,065 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 439 transitions. [2023-11-22 23:02:08,066 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 23:02:08,066 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 439 transitions. [2023-11-22 23:02:08,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-22 23:02:08,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:02:08,067 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 23:02:08,090 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 23:02:08,279 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 23:02:08,280 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:02:08,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:02:08,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1387465755, now seen corresponding path program 3 times [2023-11-22 23:02:08,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:02:08,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099265543] [2023-11-22 23:02:08,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:02:08,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:02:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:09,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:02:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:09,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 23:02:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:09,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 23:02:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:09,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 23:02:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:09,050 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 23:02:09,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:02:09,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099265543] [2023-11-22 23:02:09,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099265543] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:02:09,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629555536] [2023-11-22 23:02:09,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 23:02:09,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:02:09,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:02:09,064 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 23:02:09,091 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 23:02:09,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-22 23:02:09,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 23:02:09,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 23:02:09,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:02:09,418 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 23:02:09,418 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:02:09,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629555536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:02:09,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 23:02:09,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [26] total 29 [2023-11-22 23:02:09,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633418737] [2023-11-22 23:02:09,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:02:09,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:02:09,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:02:09,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:02:09,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=503, Unknown=0, NotChecked=0, Total=812 [2023-11-22 23:02:09,420 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 23:02:09,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:02:09,592 INFO L93 Difference]: Finished difference Result 951 states and 1311 transitions. [2023-11-22 23:02:09,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 23:02:09,593 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 23:02:09,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:02:09,595 INFO L225 Difference]: With dead ends: 951 [2023-11-22 23:02:09,595 INFO L226 Difference]: Without dead ends: 633 [2023-11-22 23:02:09,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=313, Invalid=557, Unknown=0, NotChecked=0, Total=870 [2023-11-22 23:02:09,597 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 126 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 627 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 23:02:09,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 627 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 23:02:09,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2023-11-22 23:02:09,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 625. [2023-11-22 23:02:09,617 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 23:02:09,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 861 transitions. [2023-11-22 23:02:09,619 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 861 transitions. Word has length 112 [2023-11-22 23:02:09,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:02:09,620 INFO L495 AbstractCegarLoop]: Abstraction has 625 states and 861 transitions. [2023-11-22 23:02:09,620 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 23:02:09,620 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 861 transitions. [2023-11-22 23:02:09,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-22 23:02:09,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:02:09,622 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 23:02:09,646 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 23:02:09,834 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 23:02:09,835 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:02:09,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:02:09,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1121476708, now seen corresponding path program 1 times [2023-11-22 23:02:09,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:02:09,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349358668] [2023-11-22 23:02:09,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:02:09,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:02:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:09,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:02:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:09,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 23:02:09,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:09,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 23:02:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:09,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:02:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:09,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 23:02:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:09,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-22 23:02:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:09,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 23:02:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:09,957 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 23:02:09,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:02:09,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349358668] [2023-11-22 23:02:09,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349358668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:02:09,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:02:09,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 23:02:09,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190027194] [2023-11-22 23:02:09,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:02:09,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:02:09,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:02:09,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:02:09,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:02:09,959 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 23:02:10,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:02:10,256 INFO L93 Difference]: Finished difference Result 1262 states and 1732 transitions. [2023-11-22 23:02:10,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 23:02:10,256 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 23:02:10,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:02:10,258 INFO L225 Difference]: With dead ends: 1262 [2023-11-22 23:02:10,258 INFO L226 Difference]: Without dead ends: 641 [2023-11-22 23:02:10,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:02:10,260 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 95 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 23:02:10,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 432 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 23:02:10,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-11-22 23:02:10,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 460. [2023-11-22 23:02:10,272 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 23:02:10,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 629 transitions. [2023-11-22 23:02:10,274 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 629 transitions. Word has length 147 [2023-11-22 23:02:10,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:02:10,274 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 629 transitions. [2023-11-22 23:02:10,274 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 23:02:10,274 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 629 transitions. [2023-11-22 23:02:10,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-22 23:02:10,275 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:02:10,276 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 23:02:10,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-22 23:02:10,276 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:02:10,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:02:10,276 INFO L85 PathProgramCache]: Analyzing trace with hash -252380702, now seen corresponding path program 2 times [2023-11-22 23:02:10,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:02:10,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749247870] [2023-11-22 23:02:10,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:02:10,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:02:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:10,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:02:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:10,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 23:02:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:10,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 23:02:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:10,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 23:02:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:10,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-22 23:02:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:10,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 23:02:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:10,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:02:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:10,623 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 23:02:10,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:02:10,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749247870] [2023-11-22 23:02:10,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749247870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:02:10,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:02:10,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 23:02:10,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198360234] [2023-11-22 23:02:10,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:02:10,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 23:02:10,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:02:10,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 23:02:10,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 23:02:10,625 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 23:02:10,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:02:10,989 INFO L93 Difference]: Finished difference Result 915 states and 1263 transitions. [2023-11-22 23:02:10,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 23:02:10,990 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 23:02:10,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:02:10,992 INFO L225 Difference]: With dead ends: 915 [2023-11-22 23:02:10,992 INFO L226 Difference]: Without dead ends: 482 [2023-11-22 23:02:10,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-22 23:02:10,993 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 36 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 23:02:10,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 680 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 23:02:10,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-11-22 23:02:11,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 459. [2023-11-22 23:02:11,005 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 23:02:11,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 626 transitions. [2023-11-22 23:02:11,006 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 626 transitions. Word has length 147 [2023-11-22 23:02:11,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:02:11,007 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 626 transitions. [2023-11-22 23:02:11,007 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 23:02:11,007 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 626 transitions. [2023-11-22 23:02:11,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-22 23:02:11,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:02:11,008 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 23:02:11,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-22 23:02:11,009 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:02:11,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:02:11,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1415423521, now seen corresponding path program 1 times [2023-11-22 23:02:11,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:02:11,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683067222] [2023-11-22 23:02:11,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:02:11,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:02:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:11,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:02:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:11,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 23:02:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:11,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 23:02:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:11,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 23:02:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:11,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-22 23:02:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:11,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 23:02:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:11,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:02:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:11,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 23:02:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:11,493 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 23:02:11,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:02:11,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683067222] [2023-11-22 23:02:11,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683067222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:02:11,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:02:11,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-22 23:02:11,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230335116] [2023-11-22 23:02:11,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:02:11,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-22 23:02:11,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:02:11,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-22 23:02:11,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-22 23:02:11,496 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 23:02:11,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:02:11,971 INFO L93 Difference]: Finished difference Result 920 states and 1268 transitions. [2023-11-22 23:02:11,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 23:02:11,971 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 23:02:11,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:02:11,973 INFO L225 Difference]: With dead ends: 920 [2023-11-22 23:02:11,973 INFO L226 Difference]: Without dead ends: 488 [2023-11-22 23:02:11,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-22 23:02:11,974 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 43 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 23:02:11,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 1198 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 23:02:11,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-11-22 23:02:11,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 465. [2023-11-22 23:02:11,989 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 23:02:11,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 630 transitions. [2023-11-22 23:02:11,990 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 630 transitions. Word has length 153 [2023-11-22 23:02:11,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:02:11,991 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 630 transitions. [2023-11-22 23:02:11,991 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 23:02:11,991 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 630 transitions. [2023-11-22 23:02:11,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-22 23:02:11,993 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:02:11,993 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 23:02:11,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-22 23:02:11,994 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:02:11,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:02:11,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1912978133, now seen corresponding path program 1 times [2023-11-22 23:02:11,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:02:11,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773251957] [2023-11-22 23:02:11,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:02:11,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:02:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:12,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:02:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:12,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 23:02:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:12,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 23:02:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:12,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 23:02:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:12,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-22 23:02:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:12,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 23:02:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:12,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:02:12,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:12,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 23:02:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:12,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-22 23:02:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:12,827 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 23:02:12,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:02:12,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773251957] [2023-11-22 23:02:12,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773251957] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:02:12,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585178411] [2023-11-22 23:02:12,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:02:12,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:02:12,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:02:12,844 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 23:02:12,846 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 23:02:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:13,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-22 23:02:13,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:02:13,261 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 23:02:13,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:02:13,936 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 23:02:13,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585178411] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:02:13,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:02:13,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 25] total 52 [2023-11-22 23:02:13,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220721417] [2023-11-22 23:02:13,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:02:13,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-22 23:02:13,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:02:13,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-22 23:02:13,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1185, Invalid=1467, Unknown=0, NotChecked=0, Total=2652 [2023-11-22 23:02:13,941 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 23:02:14,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:02:14,437 INFO L93 Difference]: Finished difference Result 1064 states and 1496 transitions. [2023-11-22 23:02:14,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-22 23:02:14,438 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 23:02:14,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:02:14,440 INFO L225 Difference]: With dead ends: 1064 [2023-11-22 23:02:14,440 INFO L226 Difference]: Without dead ends: 626 [2023-11-22 23:02:14,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1185, Invalid=1467, Unknown=0, NotChecked=0, Total=2652 [2023-11-22 23:02:14,442 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 23:02:14,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 882 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 23:02:14,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-11-22 23:02:14,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 609. [2023-11-22 23:02:14,468 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 23:02:14,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 822 transitions. [2023-11-22 23:02:14,470 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 822 transitions. Word has length 159 [2023-11-22 23:02:14,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:02:14,470 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 822 transitions. [2023-11-22 23:02:14,471 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 23:02:14,471 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 822 transitions. [2023-11-22 23:02:14,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-11-22 23:02:14,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:02:14,473 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 23:02:14,500 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 23:02:14,686 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 23:02:14,686 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:02:14,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:02:14,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1089521749, now seen corresponding path program 2 times [2023-11-22 23:02:14,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:02:14,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471872414] [2023-11-22 23:02:14,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:02:14,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:02:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:16,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:02:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:16,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 23:02:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:16,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-22 23:02:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:16,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 23:02:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:16,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-22 23:02:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:16,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-11-22 23:02:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:16,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:02:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:16,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 23:02:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:17,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-11-22 23:02:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:17,024 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 23:02:17,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:02:17,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471872414] [2023-11-22 23:02:17,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471872414] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:02:17,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301749002] [2023-11-22 23:02:17,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 23:02:17,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:02:17,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:02:17,026 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 23:02:17,051 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 23:02:17,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 23:02:17,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 23:02:17,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-22 23:02:17,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:02:17,744 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 23:02:17,744 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:02:17,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301749002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:02:17,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 23:02:17,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [52] total 63 [2023-11-22 23:02:17,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206615494] [2023-11-22 23:02:17,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:02:17,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-22 23:02:17,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:02:17,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-22 23:02:17,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1208, Invalid=2698, Unknown=0, NotChecked=0, Total=3906 [2023-11-22 23:02:17,748 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 23:02:18,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:02:18,135 INFO L93 Difference]: Finished difference Result 1229 states and 1669 transitions. [2023-11-22 23:02:18,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-22 23:02:18,136 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 23:02:18,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:02:18,138 INFO L225 Difference]: With dead ends: 1229 [2023-11-22 23:02:18,138 INFO L226 Difference]: Without dead ends: 647 [2023-11-22 23:02:18,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1221, Invalid=3069, Unknown=0, NotChecked=0, Total=4290 [2023-11-22 23:02:18,143 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 23:02:18,143 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 23:02:18,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2023-11-22 23:02:18,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 617. [2023-11-22 23:02:18,159 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 23:02:18,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 832 transitions. [2023-11-22 23:02:18,161 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 832 transitions. Word has length 231 [2023-11-22 23:02:18,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:02:18,161 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 832 transitions. [2023-11-22 23:02:18,162 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 23:02:18,162 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 832 transitions. [2023-11-22 23:02:18,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-11-22 23:02:18,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:02:18,164 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 23:02:18,177 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 23:02:18,376 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 23:02:18,377 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:02:18,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:02:18,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1956717130, now seen corresponding path program 1 times [2023-11-22 23:02:18,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:02:18,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077964951] [2023-11-22 23:02:18,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:02:18,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:02:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:18,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:02:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:18,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 23:02:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:18,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-22 23:02:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:18,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 23:02:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:18,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-22 23:02:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:18,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-11-22 23:02:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:18,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:02:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:18,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-11-22 23:02:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:18,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-11-22 23:02:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:18,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-11-22 23:02:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:18,593 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 23:02:18,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:02:18,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077964951] [2023-11-22 23:02:18,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077964951] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:02:18,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:02:18,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 23:02:18,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861680228] [2023-11-22 23:02:18,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:02:18,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 23:02:18,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:02:18,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 23:02:18,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-22 23:02:18,595 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 23:02:18,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:02:18,936 INFO L93 Difference]: Finished difference Result 936 states and 1274 transitions. [2023-11-22 23:02:18,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 23:02:18,937 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 23:02:18,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:02:18,939 INFO L225 Difference]: With dead ends: 936 [2023-11-22 23:02:18,940 INFO L226 Difference]: Without dead ends: 636 [2023-11-22 23:02:18,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-22 23:02:18,941 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 87 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 23:02:18,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 616 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 23:02:18,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2023-11-22 23:02:18,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 619. [2023-11-22 23:02:18,957 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 23:02:18,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 834 transitions. [2023-11-22 23:02:18,959 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 834 transitions. Word has length 239 [2023-11-22 23:02:18,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:02:18,959 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 834 transitions. [2023-11-22 23:02:18,960 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 23:02:18,960 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 834 transitions. [2023-11-22 23:02:18,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-22 23:02:18,962 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:02:18,962 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 23:02:18,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-22 23:02:18,962 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:02:18,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:02:18,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1864727229, now seen corresponding path program 1 times [2023-11-22 23:02:18,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:02:18,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478163297] [2023-11-22 23:02:18,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:02:18,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:02:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:19,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:02:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:19,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 23:02:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:19,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-22 23:02:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:19,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 23:02:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:19,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-22 23:02:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:19,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-11-22 23:02:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:19,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:02:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:19,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-11-22 23:02:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:19,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-11-22 23:02:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:19,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-11-22 23:02:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:19,532 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 23:02:19,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:02:19,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478163297] [2023-11-22 23:02:19,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478163297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:02:19,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:02:19,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-22 23:02:19,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519358548] [2023-11-22 23:02:19,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:02:19,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-22 23:02:19,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:02:19,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-22 23:02:19,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-22 23:02:19,534 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 23:02:20,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:02:20,231 INFO L93 Difference]: Finished difference Result 1237 states and 1674 transitions. [2023-11-22 23:02:20,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-22 23:02:20,232 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 23:02:20,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:02:20,234 INFO L225 Difference]: With dead ends: 1237 [2023-11-22 23:02:20,234 INFO L226 Difference]: Without dead ends: 645 [2023-11-22 23:02:20,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2023-11-22 23:02:20,235 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 427 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 23:02:20,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 828 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 23:02:20,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2023-11-22 23:02:20,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 618. [2023-11-22 23:02:20,248 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 23:02:20,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 829 transitions. [2023-11-22 23:02:20,249 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 829 transitions. Word has length 240 [2023-11-22 23:02:20,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:02:20,250 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 829 transitions. [2023-11-22 23:02:20,250 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 23:02:20,250 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 829 transitions. [2023-11-22 23:02:20,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-11-22 23:02:20,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:02:20,252 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 23:02:20,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-22 23:02:20,252 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:02:20,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:02:20,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1738814282, now seen corresponding path program 1 times [2023-11-22 23:02:20,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:02:20,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041533953] [2023-11-22 23:02:20,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:02:20,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:02:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:22,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:02:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:22,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 23:02:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:22,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-22 23:02:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:22,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 23:02:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:22,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-22 23:02:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:22,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-11-22 23:02:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:22,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:02:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:22,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 23:02:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:22,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-11-22 23:02:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:22,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2023-11-22 23:02:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:22,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-11-22 23:02:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:22,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-11-22 23:02:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:23,003 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 23:02:23,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:02:23,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041533953] [2023-11-22 23:02:23,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041533953] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:02:23,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428344949] [2023-11-22 23:02:23,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:02:23,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:02:23,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:02:23,013 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 23:02:23,038 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 23:02:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:23,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 1750 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-22 23:02:23,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:02:23,642 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 23:02:23,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:02:25,632 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 23:02:25,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428344949] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:02:25,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:02:25,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 49, 49] total 102 [2023-11-22 23:02:25,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483699607] [2023-11-22 23:02:25,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:02:25,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2023-11-22 23:02:25,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:02:25,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2023-11-22 23:02:25,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4672, Invalid=5630, Unknown=0, NotChecked=0, Total=10302 [2023-11-22 23:02:25,637 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 23:02:26,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:02:26,667 INFO L93 Difference]: Finished difference Result 1516 states and 2137 transitions. [2023-11-22 23:02:26,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-11-22 23:02:26,667 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 23:02:26,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:02:26,670 INFO L225 Difference]: With dead ends: 1516 [2023-11-22 23:02:26,670 INFO L226 Difference]: Without dead ends: 925 [2023-11-22 23:02:26,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4678, Invalid=5828, Unknown=0, NotChecked=0, Total=10506 [2023-11-22 23:02:26,673 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 504 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-22 23:02:26,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 1164 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-22 23:02:26,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2023-11-22 23:02:26,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 906. [2023-11-22 23:02:26,687 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 23:02:26,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1213 transitions. [2023-11-22 23:02:26,690 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1213 transitions. Word has length 252 [2023-11-22 23:02:26,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:02:26,690 INFO L495 AbstractCegarLoop]: Abstraction has 906 states and 1213 transitions. [2023-11-22 23:02:26,690 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 23:02:26,690 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1213 transitions. [2023-11-22 23:02:26,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-11-22 23:02:26,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:02:26,693 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 23:02:26,709 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 23:02:26,907 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 23:02:26,907 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:02:26,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:02:26,908 INFO L85 PathProgramCache]: Analyzing trace with hash 2044819530, now seen corresponding path program 2 times [2023-11-22 23:02:26,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:02:26,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597578297] [2023-11-22 23:02:26,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:02:26,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:02:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:34,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:02:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:34,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 23:02:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:34,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-11-22 23:02:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:34,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-11-22 23:02:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:34,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2023-11-22 23:02:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:34,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2023-11-22 23:02:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:34,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:02:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:34,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 23:02:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:34,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2023-11-22 23:02:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:34,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2023-11-22 23:02:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:34,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2023-11-22 23:02:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:34,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2023-11-22 23:02:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:34,297 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 23:02:34,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:02:34,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597578297] [2023-11-22 23:02:34,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597578297] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:02:34,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623575850] [2023-11-22 23:02:34,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 23:02:34,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:02:34,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:02:34,299 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 23:02:34,332 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 23:02:34,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 23:02:34,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 23:02:34,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 23:02:34,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:02:34,964 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 23:02:34,964 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:02:34,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623575850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:02:34,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 23:02:34,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [102] total 105 [2023-11-22 23:02:34,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570706222] [2023-11-22 23:02:34,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:02:34,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:02:34,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:02:34,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:02:34,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4678, Invalid=6242, Unknown=0, NotChecked=0, Total=10920 [2023-11-22 23:02:34,970 INFO L87 Difference]: Start difference. First operand 906 states and 1213 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 23:02:35,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:02:35,117 INFO L93 Difference]: Finished difference Result 1789 states and 2401 transitions. [2023-11-22 23:02:35,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 23:02:35,117 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 396 [2023-11-22 23:02:35,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:02:35,120 INFO L225 Difference]: With dead ends: 1789 [2023-11-22 23:02:35,120 INFO L226 Difference]: Without dead ends: 906 [2023-11-22 23:02:35,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4682, Invalid=6448, Unknown=0, NotChecked=0, Total=11130 [2023-11-22 23:02:35,126 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 8 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 23:02:35,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 646 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 23:02:35,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-11-22 23:02:35,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2023-11-22 23:02:35,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 833 states have (on average 1.3349339735894359) internal successors, (1112), 834 states have internal predecessors, (1112), 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 23:02:35,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1207 transitions. [2023-11-22 23:02:35,143 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1207 transitions. Word has length 396 [2023-11-22 23:02:35,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:02:35,143 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1207 transitions. [2023-11-22 23:02:35,144 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 23:02:35,144 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1207 transitions. [2023-11-22 23:02:35,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2023-11-22 23:02:35,147 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:02:35,147 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, 1] [2023-11-22 23:02:35,159 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 23:02:35,360 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 23:02:35,360 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:02:35,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:02:35,361 INFO L85 PathProgramCache]: Analyzing trace with hash -2017042194, now seen corresponding path program 1 times [2023-11-22 23:02:35,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:02:35,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133092018] [2023-11-22 23:02:35,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:02:35,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:02:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:42,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:02:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:42,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 23:02:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:42,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-11-22 23:02:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:42,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-11-22 23:02:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:42,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2023-11-22 23:02:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:42,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2023-11-22 23:02:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:42,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:02:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:42,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 23:02:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:42,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2023-11-22 23:02:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:42,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2023-11-22 23:02:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:42,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2023-11-22 23:02:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:42,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2023-11-22 23:02:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:42,643 INFO L134 CoverageAnalysis]: Checked inductivity of 13245 backedges. 7 proven. 13207 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-22 23:02:42,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:02:42,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133092018] [2023-11-22 23:02:42,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133092018] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:02:42,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909382651] [2023-11-22 23:02:42,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:02:42,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:02:42,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:02:42,645 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 23:02:42,654 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 23:02:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:02:43,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 2840 conjuncts, 96 conjunts are in the unsatisfiable core [2023-11-22 23:02:43,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:02:43,786 INFO L134 CoverageAnalysis]: Checked inductivity of 13245 backedges. 19 proven. 13207 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-22 23:02:43,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:02:52,457 INFO L134 CoverageAnalysis]: Checked inductivity of 13245 backedges. 7 proven. 13207 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-22 23:02:52,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909382651] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:02:52,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:02:52,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 97, 97] total 198 [2023-11-22 23:02:52,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730068434] [2023-11-22 23:02:52,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:02:52,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 198 states [2023-11-22 23:02:52,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:02:52,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2023-11-22 23:02:52,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18544, Invalid=20462, Unknown=0, NotChecked=0, Total=39006 [2023-11-22 23:02:52,468 INFO L87 Difference]: Start difference. First operand 904 states and 1207 transitions. Second operand has 198 states, 198 states have (on average 3.4444444444444446) internal successors, (682), 193 states have internal predecessors, (682), 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 23:02:57,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:02:57,168 INFO L93 Difference]: Finished difference Result 2370 states and 3361 transitions. [2023-11-22 23:02:57,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2023-11-22 23:02:57,169 INFO L78 Accepts]: Start accepts. Automaton has has 198 states, 198 states have (on average 3.4444444444444446) internal successors, (682), 193 states have internal predecessors, (682), 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 397 [2023-11-22 23:02:57,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:02:57,173 INFO L225 Difference]: With dead ends: 2370 [2023-11-22 23:02:57,174 INFO L226 Difference]: Without dead ends: 1493 [2023-11-22 23:02:57,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 718 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1427 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=18550, Invalid=20852, Unknown=0, NotChecked=0, Total=39402 [2023-11-22 23:02:57,178 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 970 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-22 23:02:57,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 1185 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-22 23:02:57,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2023-11-22 23:02:57,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 1480. [2023-11-22 23:02:57,196 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 23:02:57,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 1975 transitions. [2023-11-22 23:02:57,199 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 1975 transitions. Word has length 397 [2023-11-22 23:02:57,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:02:57,200 INFO L495 AbstractCegarLoop]: Abstraction has 1480 states and 1975 transitions. [2023-11-22 23:02:57,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 198 states, 198 states have (on average 3.4444444444444446) internal successors, (682), 193 states have internal predecessors, (682), 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 23:02:57,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 1975 transitions. [2023-11-22 23:02:57,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-22 23:02:57,209 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:02:57,209 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 23:02:57,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-22 23:02:57,425 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 23:02:57,425 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:02:57,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:02:57,426 INFO L85 PathProgramCache]: Analyzing trace with hash -800385298, now seen corresponding path program 2 times [2023-11-22 23:02:57,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:02:57,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700208941] [2023-11-22 23:02:57,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:02:57,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:02:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:03:24,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:03:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:03:24,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 23:03:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:03:24,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 593 [2023-11-22 23:03:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:03:24,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2023-11-22 23:03:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:03:24,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2023-11-22 23:03:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:03:24,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2023-11-22 23:03:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:03:24,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:03:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:03:24,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 23:03:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:03:24,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2023-11-22 23:03:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:03:24,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 650 [2023-11-22 23:03:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:03:24,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2023-11-22 23:03:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:03:24,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 666 [2023-11-22 23:03:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:03:24,760 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 23:03:24,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:03:24,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700208941] [2023-11-22 23:03:24,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700208941] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:03:24,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858383348] [2023-11-22 23:03:24,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 23:03:24,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:03:24,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:03:24,762 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 23:03:24,764 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 23:03:25,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 23:03:25,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 23:03:25,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 23:03:25,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:03:25,757 INFO L134 CoverageAnalysis]: Checked inductivity of 54093 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 54086 trivial. 0 not checked. [2023-11-22 23:03:25,757 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:03:25,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858383348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:03:25,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 23:03:25,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [198] total 201 [2023-11-22 23:03:25,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928898891] [2023-11-22 23:03:25,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:03:25,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:03:25,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:03:25,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:03:25,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18550, Invalid=21650, Unknown=0, NotChecked=0, Total=40200 [2023-11-22 23:03:25,764 INFO L87 Difference]: Start difference. First operand 1480 states and 1975 transitions. Second operand has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 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 23:03:25,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:03:25,928 INFO L93 Difference]: Finished difference Result 2939 states and 3925 transitions. [2023-11-22 23:03:25,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 23:03:25,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 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 685 [2023-11-22 23:03:25,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:03:25,933 INFO L225 Difference]: With dead ends: 2939 [2023-11-22 23:03:25,933 INFO L226 Difference]: Without dead ends: 1484 [2023-11-22 23:03:25,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 702 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=18554, Invalid=22048, Unknown=0, NotChecked=0, Total=40602 [2023-11-22 23:03:25,940 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 7 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 23:03:25,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 649 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 23:03:25,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2023-11-22 23:03:25,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1482. [2023-11-22 23:03:25,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1411 states have (on average 1.333805811481219) internal successors, (1882), 1412 states have internal predecessors, (1882), 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 23:03:25,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 1977 transitions. [2023-11-22 23:03:25,960 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 1977 transitions. Word has length 685 [2023-11-22 23:03:25,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:03:25,961 INFO L495 AbstractCegarLoop]: Abstraction has 1482 states and 1977 transitions. [2023-11-22 23:03:25,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 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 23:03:25,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 1977 transitions. [2023-11-22 23:03:25,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2023-11-22 23:03:25,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:03:25,965 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, 1] [2023-11-22 23:03:25,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-22 23:03:26,178 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 23:03:26,180 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:03:26,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:03:26,181 INFO L85 PathProgramCache]: Analyzing trace with hash 319058188, now seen corresponding path program 1 times [2023-11-22 23:03:26,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:03:26,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754424128] [2023-11-22 23:03:26,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:03:26,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:03:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:03:49,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:03:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:03:49,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 23:03:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:03:49,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 593 [2023-11-22 23:03:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:03:49,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2023-11-22 23:03:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:03:49,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2023-11-22 23:03:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:03:49,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2023-11-22 23:03:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:03:49,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:03:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:03:49,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 23:03:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:03:49,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2023-11-22 23:03:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:03:49,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 650 [2023-11-22 23:03:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:03:49,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2023-11-22 23:03:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:03:49,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 667 [2023-11-22 23:03:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:03:49,399 INFO L134 CoverageAnalysis]: Checked inductivity of 54094 backedges. 7 proven. 54055 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-22 23:03:49,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:03:49,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754424128] [2023-11-22 23:03:49,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754424128] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:03:49,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530342729] [2023-11-22 23:03:49,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:03:49,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:03:49,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:03:49,401 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 23:03:49,401 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 23:03:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:03:50,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 4875 conjuncts, 192 conjunts are in the unsatisfiable core [2023-11-22 23:03:50,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:03:51,245 INFO L134 CoverageAnalysis]: Checked inductivity of 54094 backedges. 19 proven. 54055 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-22 23:03:51,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:04:08,078 INFO L134 CoverageAnalysis]: Checked inductivity of 54094 backedges. 7 proven. 54055 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-22 23:04:08,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530342729] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 23:04:08,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 23:04:08,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [198, 193, 193] total 264 [2023-11-22 23:04:08,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755984326] [2023-11-22 23:04:08,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 23:04:08,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 264 states [2023-11-22 23:04:08,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:04:08,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 264 interpolants. [2023-11-22 23:04:08,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33427, Invalid=36005, Unknown=0, NotChecked=0, Total=69432 [2023-11-22 23:04:08,090 INFO L87 Difference]: Start difference. First operand 1482 states and 1977 transitions. Second operand has 264 states, 264 states have (on average 3.352272727272727) internal successors, (885), 259 states have internal predecessors, (885), 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 23:04:19,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:04:19,626 INFO L93 Difference]: Finished difference Result 3346 states and 4601 transitions. [2023-11-22 23:04:19,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 262 states. [2023-11-22 23:04:19,626 INFO L78 Accepts]: Start accepts. Automaton has has 264 states, 264 states have (on average 3.352272727272727) internal successors, (885), 259 states have internal predecessors, (885), 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 686 [2023-11-22 23:04:19,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:04:19,633 INFO L225 Difference]: With dead ends: 3346 [2023-11-22 23:04:19,633 INFO L226 Difference]: Without dead ends: 1891 [2023-11-22 23:04:19,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1589 GetRequests, 1200 SyntacticMatches, 126 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18176 ImplicationChecksByTransitivity, 24.2s TimeCoverageRelationStatistics Valid=33433, Invalid=36527, Unknown=0, NotChecked=0, Total=69960 [2023-11-22 23:04:19,637 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 1302 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 1702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-22 23:04:19,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1303 Valid, 1720 Invalid, 1702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1679 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-22 23:04:19,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2023-11-22 23:04:19,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1878. [2023-11-22 23:04:19,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1807 states have (on average 1.3337022689540674) internal successors, (2410), 1808 states have internal predecessors, (2410), 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 23:04:19,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2505 transitions. [2023-11-22 23:04:19,662 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2505 transitions. Word has length 686 [2023-11-22 23:04:19,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:04:19,662 INFO L495 AbstractCegarLoop]: Abstraction has 1878 states and 2505 transitions. [2023-11-22 23:04:19,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 264 states, 264 states have (on average 3.352272727272727) internal successors, (885), 259 states have internal predecessors, (885), 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 23:04:19,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2505 transitions. [2023-11-22 23:04:19,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2023-11-22 23:04:19,668 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:04:19,669 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 23:04:19,706 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 23:04:19,889 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 23:04:19,889 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:04:19,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:04:19,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1155808276, now seen corresponding path program 2 times [2023-11-22 23:04:19,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:04:19,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222744090] [2023-11-22 23:04:19,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:04:19,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:04:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:04:22,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:04:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:04:22,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 23:04:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:04:22,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 791 [2023-11-22 23:04:22,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:04:22,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 797 [2023-11-22 23:04:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:04:22,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 811 [2023-11-22 23:04:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:04:22,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2023-11-22 23:04:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:04:22,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:04:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:04:22,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 23:04:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:04:22,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 840 [2023-11-22 23:04:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:04:22,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 848 [2023-11-22 23:04:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:04:22,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2023-11-22 23:04:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:04:22,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 865 [2023-11-22 23:04:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:04:22,206 INFO L134 CoverageAnalysis]: Checked inductivity of 98215 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 98208 trivial. 0 not checked. [2023-11-22 23:04:22,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:04:22,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222744090] [2023-11-22 23:04:22,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222744090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:04:22,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:04:22,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-22 23:04:22,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116794902] [2023-11-22 23:04:22,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:04:22,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-22 23:04:22,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:04:22,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-22 23:04:22,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-22 23:04:22,209 INFO L87 Difference]: Start difference. First operand 1878 states and 2505 transitions. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 8 states have internal predecessors, (82), 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 23:04:22,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:04:22,993 INFO L93 Difference]: Finished difference Result 3782 states and 5053 transitions. [2023-11-22 23:04:22,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-22 23:04:22,994 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 8 states have internal predecessors, (82), 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 884 [2023-11-22 23:04:22,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:04:23,001 INFO L225 Difference]: With dead ends: 3782 [2023-11-22 23:04:23,001 INFO L226 Difference]: Without dead ends: 2850 [2023-11-22 23:04:23,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=670, Unknown=0, NotChecked=0, Total=870 [2023-11-22 23:04:23,003 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 830 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 23:04:23,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 1347 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 23:04:23,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2023-11-22 23:04:23,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 2809. [2023-11-22 23:04:23,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2809 states, 2704 states have (on average 1.334689349112426) internal successors, (3609), 2707 states have internal predecessors, (3609), 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 23:04:23,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2809 states to 2809 states and 3750 transitions. [2023-11-22 23:04:23,046 INFO L78 Accepts]: Start accepts. Automaton has 2809 states and 3750 transitions. Word has length 884 [2023-11-22 23:04:23,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:04:23,047 INFO L495 AbstractCegarLoop]: Abstraction has 2809 states and 3750 transitions. [2023-11-22 23:04:23,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 8 states have internal predecessors, (82), 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 23:04:23,047 INFO L276 IsEmpty]: Start isEmpty. Operand 2809 states and 3750 transitions. [2023-11-22 23:04:23,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2023-11-22 23:04:23,053 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:04:23,053 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] [2023-11-22 23:04:23,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-22 23:04:23,054 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:04:23,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:04:23,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1634263029, now seen corresponding path program 1 times [2023-11-22 23:04:23,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:04:23,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168093985] [2023-11-22 23:04:23,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:04:23,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:04:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:04:24,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:04:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:04:24,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 23:04:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:04:24,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 791 [2023-11-22 23:04:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:04:24,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 797 [2023-11-22 23:04:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:04:24,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 811 [2023-11-22 23:04:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:04:24,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2023-11-22 23:04:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:04:24,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:04:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:04:24,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 23:04:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:04:24,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 840 [2023-11-22 23:04:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:04:24,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 848 [2023-11-22 23:04:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:04:24,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2023-11-22 23:04:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:04:24,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 865 [2023-11-22 23:04:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:04:24,251 INFO L134 CoverageAnalysis]: Checked inductivity of 98215 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 98208 trivial. 0 not checked. [2023-11-22 23:04:24,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:04:24,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168093985] [2023-11-22 23:04:24,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168093985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:04:24,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:04:24,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-22 23:04:24,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026794551] [2023-11-22 23:04:24,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:04:24,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 23:04:24,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:04:24,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 23:04:24,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-22 23:04:24,253 INFO L87 Difference]: Start difference. First operand 2809 states and 3750 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 4 states have internal predecessors, (83), 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 23:04:24,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:04:24,549 INFO L93 Difference]: Finished difference Result 4689 states and 6271 transitions. [2023-11-22 23:04:24,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 23:04:24,549 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 4 states have internal predecessors, (83), 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 885 [2023-11-22 23:04:24,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:04:24,556 INFO L225 Difference]: With dead ends: 4689 [2023-11-22 23:04:24,556 INFO L226 Difference]: Without dead ends: 2829 [2023-11-22 23:04:24,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-22 23:04:24,558 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 104 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 23:04:24,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 557 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 23:04:24,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2829 states. [2023-11-22 23:04:24,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2829 to 2809. [2023-11-22 23:04:24,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2809 states, 2704 states have (on average 1.3339497041420119) internal successors, (3607), 2707 states have internal predecessors, (3607), 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 23:04:24,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2809 states to 2809 states and 3748 transitions. [2023-11-22 23:04:24,597 INFO L78 Accepts]: Start accepts. Automaton has 2809 states and 3748 transitions. Word has length 885 [2023-11-22 23:04:24,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:04:24,598 INFO L495 AbstractCegarLoop]: Abstraction has 2809 states and 3748 transitions. [2023-11-22 23:04:24,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 4 states have internal predecessors, (83), 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 23:04:24,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2809 states and 3748 transitions. [2023-11-22 23:04:24,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2023-11-22 23:04:24,604 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:04:24,604 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 23:04:24,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-22 23:04:24,604 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:04:24,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:04:24,605 INFO L85 PathProgramCache]: Analyzing trace with hash -290217212, now seen corresponding path program 1 times [2023-11-22 23:04:24,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:04:24,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749497546] [2023-11-22 23:04:24,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:04:24,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:05:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:05:30,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:05:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:05:30,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 23:05:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:05:30,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 791 [2023-11-22 23:05:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:05:30,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 797 [2023-11-22 23:05:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:05:30,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 811 [2023-11-22 23:05:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:05:30,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2023-11-22 23:05:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:05:30,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:05:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:05:30,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 23:05:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:05:30,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 840 [2023-11-22 23:05:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:05:30,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 848 [2023-11-22 23:05:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:05:30,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2023-11-22 23:05:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:05:30,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 865 [2023-11-22 23:05:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:05:30,760 INFO L134 CoverageAnalysis]: Checked inductivity of 98217 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 98210 trivial. 0 not checked. [2023-11-22 23:05:30,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:05:30,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749497546] [2023-11-22 23:05:30,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749497546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:05:30,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:05:30,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-22 23:05:30,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019710151] [2023-11-22 23:05:30,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:05:30,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 23:05:30,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:05:30,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 23:05:30,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-22 23:05:30,762 INFO L87 Difference]: Start difference. First operand 2809 states and 3748 transitions. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 5 states have internal predecessors, (84), 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 23:05:31,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:05:31,258 INFO L93 Difference]: Finished difference Result 5701 states and 7639 transitions. [2023-11-22 23:05:31,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 23:05:31,258 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 5 states have internal predecessors, (84), 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 887 [2023-11-22 23:05:31,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:05:31,266 INFO L225 Difference]: With dead ends: 5701 [2023-11-22 23:05:31,266 INFO L226 Difference]: Without dead ends: 2919 [2023-11-22 23:05:31,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-22 23:05:31,270 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 167 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 23:05:31,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 795 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 23:05:31,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2023-11-22 23:05:31,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 2869. [2023-11-22 23:05:31,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2869 states, 2749 states have (on average 1.3306656966169517) internal successors, (3658), 2749 states have internal predecessors, (3658), 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 23:05:31,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 3835 transitions. [2023-11-22 23:05:31,318 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 3835 transitions. Word has length 887 [2023-11-22 23:05:31,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:05:31,319 INFO L495 AbstractCegarLoop]: Abstraction has 2869 states and 3835 transitions. [2023-11-22 23:05:31,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 5 states have internal predecessors, (84), 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 23:05:31,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 3835 transitions. [2023-11-22 23:05:31,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2023-11-22 23:05:31,325 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:05:31,325 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 23:05:31,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-22 23:05:31,326 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:05:31,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:05:31,326 INFO L85 PathProgramCache]: Analyzing trace with hash -213316414, now seen corresponding path program 1 times [2023-11-22 23:05:31,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:05:31,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527425492] [2023-11-22 23:05:31,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:05:31,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:05:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:05:58,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:05:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:05:58,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 23:05:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:05:58,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 791 [2023-11-22 23:05:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:05:58,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 797 [2023-11-22 23:05:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:05:58,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 811 [2023-11-22 23:05:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:05:58,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2023-11-22 23:05:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:05:58,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:05:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:05:58,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 23:05:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:05:58,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 840 [2023-11-22 23:05:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:05:58,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 848 [2023-11-22 23:05:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:05:58,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2023-11-22 23:05:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:05:58,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 865 [2023-11-22 23:05:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:05:58,539 INFO L134 CoverageAnalysis]: Checked inductivity of 98217 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98217 trivial. 0 not checked. [2023-11-22 23:05:58,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:05:58,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527425492] [2023-11-22 23:05:58,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527425492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:05:58,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:05:58,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 23:05:58,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955871665] [2023-11-22 23:05:58,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:05:58,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 23:05:58,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:05:58,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 23:05:58,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-22 23:05:58,542 INFO L87 Difference]: Start difference. First operand 2869 states and 3835 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 3 states have internal predecessors, (80), 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 23:05:58,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:05:58,857 INFO L93 Difference]: Finished difference Result 5745 states and 7696 transitions. [2023-11-22 23:05:58,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 23:05:58,872 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 3 states have internal predecessors, (80), 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 887 [2023-11-22 23:05:58,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:05:58,879 INFO L225 Difference]: With dead ends: 5745 [2023-11-22 23:05:58,879 INFO L226 Difference]: Without dead ends: 2890 [2023-11-22 23:05:58,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-22 23:05:58,883 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 50 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 23:05:58,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 598 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 23:05:58,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2023-11-22 23:05:58,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 2870. [2023-11-22 23:05:58,930 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 23:05:58,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 3836 transitions. [2023-11-22 23:05:58,935 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 3836 transitions. Word has length 887 [2023-11-22 23:05:58,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:05:58,935 INFO L495 AbstractCegarLoop]: Abstraction has 2870 states and 3836 transitions. [2023-11-22 23:05:58,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 3 states have internal predecessors, (80), 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 23:05:58,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 3836 transitions. [2023-11-22 23:05:58,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2023-11-22 23:05:58,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:05:58,977 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 23:05:58,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-22 23:05:58,978 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:05:58,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:05:58,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1499677046, now seen corresponding path program 1 times [2023-11-22 23:05:58,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:05:58,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962380103] [2023-11-22 23:05:58,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:05:58,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:05:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:06:01,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:06:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:06:01,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 23:06:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:06:01,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2023-11-22 23:06:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:06:01,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 798 [2023-11-22 23:06:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:06:01,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 812 [2023-11-22 23:06:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:06:01,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 818 [2023-11-22 23:06:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:06:01,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:06:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:06:01,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 23:06:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:06:01,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2023-11-22 23:06:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:06:01,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2023-11-22 23:06:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:06:01,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 856 [2023-11-22 23:06:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:06:01,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 866 [2023-11-22 23:06:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:06:01,366 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 23:06:01,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:06:01,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962380103] [2023-11-22 23:06:01,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962380103] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:06:01,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104991001] [2023-11-22 23:06:01,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:06:01,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:06:01,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:06:01,396 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 23:06:01,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process Killed by 15