./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 20:55:04,813 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 20:55:04,903 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-22 20:55:04,914 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 20:55:04,914 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 20:55:04,941 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 20:55:04,942 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 20:55:04,942 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 20:55:04,943 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 20:55:04,947 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 20:55:04,947 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 20:55:04,948 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 20:55:04,949 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 20:55:04,950 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 20:55:04,950 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 20:55:04,951 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 20:55:04,951 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 20:55:04,951 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 20:55:04,951 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 20:55:04,952 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 20:55:04,952 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 20:55:04,953 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 20:55:04,953 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 20:55:04,954 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 20:55:04,954 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 20:55:04,955 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 20:55:04,955 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 20:55:04,955 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 20:55:04,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 20:55:04,956 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 20:55:04,957 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 20:55:04,957 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 20:55:04,957 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 20:55:04,957 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 20:55:04,957 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 20:55:04,957 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 20:55:04,958 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 20:55:04,958 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 20:55:04,958 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 20:55:04,958 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb4cf2f7b619bb65636b8158cc0f6ae5cf90699f1f1c19bf802021a20c422d2c Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-22 20:55:05,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 20:55:05,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 20:55:05,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 20:55:05,228 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 20:55:05,228 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 20:55:05,229 INFO L431 ainManager$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 20:55:06,382 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 20:55:06,810 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 20:55:06,811 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 20:55:06,849 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c3ba833c/c1315762b9b446f2877f1d706932ecbe/FLAG5b77138bb [2023-11-22 20:55:06,863 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c3ba833c/c1315762b9b446f2877f1d706932ecbe [2023-11-22 20:55:06,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 20:55:06,867 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 20:55:06,869 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 20:55:06,870 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 20:55:06,874 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 20:55:06,875 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:55:06" (1/1) ... [2023-11-22 20:55:06,876 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f9dfbce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:55:06, skipping insertion in model container [2023-11-22 20:55:06,876 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:55:06" (1/1) ... [2023-11-22 20:55:07,027 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 20:55:07,573 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 20:55:07,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 20:55:07,757 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 20:55:07,915 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 20:55:07,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 20:55:07,984 INFO L206 MainTranslator]: Completed translation [2023-11-22 20:55:07,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:55:07 WrapperNode [2023-11-22 20:55:07,985 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 20:55:07,986 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 20:55:07,986 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 20:55:07,986 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 20:55:07,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:55:07" (1/1) ... [2023-11-22 20:55:08,023 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:55:07" (1/1) ... [2023-11-22 20:55:08,065 INFO L138 Inliner]: procedures = 82, calls = 143, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 483 [2023-11-22 20:55:08,065 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 20:55:08,066 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 20:55:08,066 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 20:55:08,066 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 20:55:08,075 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:55:07" (1/1) ... [2023-11-22 20:55:08,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:55:07" (1/1) ... [2023-11-22 20:55:08,090 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:55:07" (1/1) ... [2023-11-22 20:55:08,093 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:55:07" (1/1) ... [2023-11-22 20:55:08,124 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:55:07" (1/1) ... [2023-11-22 20:55:08,129 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:55:07" (1/1) ... [2023-11-22 20:55:08,132 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:55:07" (1/1) ... [2023-11-22 20:55:08,135 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:55:07" (1/1) ... [2023-11-22 20:55:08,140 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 20:55:08,141 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 20:55:08,141 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 20:55:08,141 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 20:55:08,142 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:55:07" (1/1) ... [2023-11-22 20:55:08,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 20:55:08,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:55:08,181 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 20:55:08,206 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 20:55:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 20:55:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-22 20:55:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 20:55:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-22 20:55:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-22 20:55:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-22 20:55:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-22 20:55:08,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-22 20:55:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-22 20:55:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-22 20:55:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2023-11-22 20:55:08,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2023-11-22 20:55:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-22 20:55:08,234 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-22 20:55:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-22 20:55:08,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-22 20:55:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 20:55:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-22 20:55:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2023-11-22 20:55:08,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2023-11-22 20:55:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-22 20:55:08,235 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-22 20:55:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-22 20:55:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-22 20:55:08,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-22 20:55:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-22 20:55:08,236 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-22 20:55:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-22 20:55:08,236 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-22 20:55:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-22 20:55:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-22 20:55:08,237 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2023-11-22 20:55:08,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2023-11-22 20:55:08,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-22 20:55:08,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-22 20:55:08,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-22 20:55:08,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 20:55:08,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 20:55:08,467 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 20:55:08,472 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 20:55:08,537 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-22 20:55:08,960 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 20:55:09,072 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 20:55:09,072 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-22 20:55:09,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:55:09 BoogieIcfgContainer [2023-11-22 20:55:09,075 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 20:55:09,078 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 20:55:09,078 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 20:55:09,080 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 20:55:09,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 08:55:06" (1/3) ... [2023-11-22 20:55:09,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649c839e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:55:09, skipping insertion in model container [2023-11-22 20:55:09,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:55:07" (2/3) ... [2023-11-22 20:55:09,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649c839e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:55:09, skipping insertion in model container [2023-11-22 20:55:09,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:55:09" (3/3) ... [2023-11-22 20:55:09,082 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 20:55:09,095 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 20:55:09,095 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 20:55:09,143 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 20:55:09,149 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;@441378c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 20:55:09,149 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 20:55:09,154 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 20:55:09,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-22 20:55:09,162 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:55:09,163 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 20:55:09,163 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:55:09,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:55:09,168 INFO L85 PathProgramCache]: Analyzing trace with hash 310174036, now seen corresponding path program 1 times [2023-11-22 20:55:09,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:55:09,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034370373] [2023-11-22 20:55:09,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:09,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:55:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:09,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:09,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:09,561 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 20:55:09,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:55:09,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034370373] [2023-11-22 20:55:09,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034370373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:55:09,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:55:09,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 20:55:09,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661270591] [2023-11-22 20:55:09,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:55:09,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 20:55:09,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:55:09,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 20:55:09,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 20:55:09,608 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 20:55:10,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:55:10,095 INFO L93 Difference]: Finished difference Result 453 states and 695 transitions. [2023-11-22 20:55:10,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 20:55:10,098 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 20:55:10,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:55:10,121 INFO L225 Difference]: With dead ends: 453 [2023-11-22 20:55:10,122 INFO L226 Difference]: Without dead ends: 299 [2023-11-22 20:55:10,128 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 20:55:10,135 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 262 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 20:55:10,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 377 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 20:55:10,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-11-22 20:55:10,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 257. [2023-11-22 20:55:10,215 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 20:55:10,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 358 transitions. [2023-11-22 20:55:10,219 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 358 transitions. Word has length 18 [2023-11-22 20:55:10,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:55:10,220 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 358 transitions. [2023-11-22 20:55:10,220 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 20:55:10,221 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 358 transitions. [2023-11-22 20:55:10,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-22 20:55:10,223 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:55:10,223 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 20:55:10,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 20:55:10,223 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:55:10,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:55:10,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1929825165, now seen corresponding path program 1 times [2023-11-22 20:55:10,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:55:10,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359925554] [2023-11-22 20:55:10,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:10,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:55:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:10,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:10,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 20:55:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:10,356 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 20:55:10,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:55:10,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359925554] [2023-11-22 20:55:10,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359925554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:55:10,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:55:10,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 20:55:10,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64802910] [2023-11-22 20:55:10,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:55:10,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 20:55:10,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:55:10,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 20:55:10,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 20:55:10,360 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 20:55:10,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:55:10,642 INFO L93 Difference]: Finished difference Result 555 states and 780 transitions. [2023-11-22 20:55:10,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 20:55:10,642 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 20:55:10,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:55:10,649 INFO L225 Difference]: With dead ends: 555 [2023-11-22 20:55:10,650 INFO L226 Difference]: Without dead ends: 302 [2023-11-22 20:55:10,652 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 20:55:10,656 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, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 20:55:10,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 365 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 20:55:10,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-11-22 20:55:10,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 258. [2023-11-22 20:55:10,689 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 20:55:10,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 359 transitions. [2023-11-22 20:55:10,691 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 359 transitions. Word has length 28 [2023-11-22 20:55:10,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:55:10,693 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 359 transitions. [2023-11-22 20:55:10,695 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 20:55:10,696 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 359 transitions. [2023-11-22 20:55:10,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-22 20:55:10,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:55:10,699 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 20:55:10,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 20:55:10,699 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:55:10,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:55:10,700 INFO L85 PathProgramCache]: Analyzing trace with hash -307646832, now seen corresponding path program 1 times [2023-11-22 20:55:10,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:55:10,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899048047] [2023-11-22 20:55:10,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:10,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:55:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:10,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:10,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 20:55:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:10,848 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 20:55:10,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:55:10,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899048047] [2023-11-22 20:55:10,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899048047] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:55:10,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706176088] [2023-11-22 20:55:10,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:10,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:55:10,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:55:10,851 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 20:55:10,859 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 20:55:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:11,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 20:55:11,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:55:11,111 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 20:55:11,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 20:55:11,149 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 20:55:11,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706176088] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 20:55:11,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 20:55:11,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-11-22 20:55:11,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268426778] [2023-11-22 20:55:11,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 20:55:11,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 20:55:11,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:55:11,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 20:55:11,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-22 20:55:11,153 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 20:55:11,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:55:11,503 INFO L93 Difference]: Finished difference Result 563 states and 792 transitions. [2023-11-22 20:55:11,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 20:55:11,503 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 20:55:11,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:55:11,505 INFO L225 Difference]: With dead ends: 563 [2023-11-22 20:55:11,506 INFO L226 Difference]: Without dead ends: 309 [2023-11-22 20:55:11,506 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 20:55:11,507 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 49 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 20:55:11,507 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 20:55:11,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-11-22 20:55:11,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 267. [2023-11-22 20:55:11,519 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 20:55:11,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 371 transitions. [2023-11-22 20:55:11,521 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 371 transitions. Word has length 31 [2023-11-22 20:55:11,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:55:11,521 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 371 transitions. [2023-11-22 20:55:11,521 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 20:55:11,522 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 371 transitions. [2023-11-22 20:55:11,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-22 20:55:11,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:55:11,524 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 20:55:11,541 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 20:55:11,740 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 20:55:11,741 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:55:11,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:55:11,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1425511885, now seen corresponding path program 2 times [2023-11-22 20:55:11,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:55:11,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81276320] [2023-11-22 20:55:11,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:11,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:55:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:11,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:11,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 20:55:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:11,849 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 20:55:11,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:55:11,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81276320] [2023-11-22 20:55:11,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81276320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:55:11,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:55:11,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 20:55:11,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073720462] [2023-11-22 20:55:11,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:55:11,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 20:55:11,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:55:11,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 20:55:11,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 20:55:11,851 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 20:55:12,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:55:12,065 INFO L93 Difference]: Finished difference Result 571 states and 799 transitions. [2023-11-22 20:55:12,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 20:55:12,065 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 20:55:12,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:55:12,067 INFO L225 Difference]: With dead ends: 571 [2023-11-22 20:55:12,067 INFO L226 Difference]: Without dead ends: 308 [2023-11-22 20:55:12,068 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 20:55:12,069 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 242 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 20:55:12,069 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 20:55:12,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-22 20:55:12,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 266. [2023-11-22 20:55:12,085 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 20:55:12,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 367 transitions. [2023-11-22 20:55:12,087 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 367 transitions. Word has length 40 [2023-11-22 20:55:12,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:55:12,087 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 367 transitions. [2023-11-22 20:55:12,088 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 20:55:12,088 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 367 transitions. [2023-11-22 20:55:12,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-22 20:55:12,093 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:55:12,094 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 20:55:12,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-22 20:55:12,094 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:55:12,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:55:12,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1732359685, now seen corresponding path program 1 times [2023-11-22 20:55:12,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:55:12,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673121017] [2023-11-22 20:55:12,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:12,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:55:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:12,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:12,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 20:55:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:12,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-22 20:55:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:12,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 20:55:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:12,262 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 20:55:12,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:55:12,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673121017] [2023-11-22 20:55:12,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673121017] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:55:12,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434290968] [2023-11-22 20:55:12,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:12,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:55:12,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:55:12,264 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 20:55:12,284 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 20:55:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:12,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 20:55:12,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:55:12,479 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 20:55:12,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 20:55:12,554 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 20:55:12,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434290968] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 20:55:12,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 20:55:12,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2023-11-22 20:55:12,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87743762] [2023-11-22 20:55:12,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 20:55:12,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-22 20:55:12,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:55:12,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-22 20:55:12,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2023-11-22 20:55:12,558 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 20:55:12,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:55:12,860 INFO L93 Difference]: Finished difference Result 473 states and 663 transitions. [2023-11-22 20:55:12,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-22 20:55:12,860 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 20:55:12,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:55:12,862 INFO L225 Difference]: With dead ends: 473 [2023-11-22 20:55:12,862 INFO L226 Difference]: Without dead ends: 326 [2023-11-22 20:55:12,862 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 20:55:12,863 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, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 20:55:12,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 492 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 20:55:12,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-11-22 20:55:12,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 284. [2023-11-22 20:55:12,874 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 20:55:12,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 391 transitions. [2023-11-22 20:55:12,875 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 391 transitions. Word has length 58 [2023-11-22 20:55:12,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:55:12,875 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 391 transitions. [2023-11-22 20:55:12,876 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 20:55:12,876 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 391 transitions. [2023-11-22 20:55:12,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-22 20:55:12,877 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:55:12,877 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 20:55:12,896 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 20:55:13,092 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 20:55:13,092 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:55:13,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:55:13,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1180086949, now seen corresponding path program 2 times [2023-11-22 20:55:13,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:55:13,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578088953] [2023-11-22 20:55:13,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:13,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:55:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:13,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:13,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 20:55:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:13,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 20:55:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:13,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 20:55:13,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:13,473 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 20:55:13,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:55:13,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578088953] [2023-11-22 20:55:13,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578088953] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:55:13,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760785748] [2023-11-22 20:55:13,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 20:55:13,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:55:13,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:55:13,475 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 20:55:13,497 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 20:55:13,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 20:55:13,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 20:55:13,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 20:55:13,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:55:13,735 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 20:55:13,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 20:55:13,972 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 20:55:13,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760785748] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 20:55:13,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 20:55:13,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 26 [2023-11-22 20:55:13,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823417327] [2023-11-22 20:55:13,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 20:55:13,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-22 20:55:13,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:55:13,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-22 20:55:13,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2023-11-22 20:55:13,976 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 20:55:14,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:55:14,420 INFO L93 Difference]: Finished difference Result 527 states and 741 transitions. [2023-11-22 20:55:14,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-22 20:55:14,421 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 20:55:14,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:55:14,422 INFO L225 Difference]: With dead ends: 527 [2023-11-22 20:55:14,422 INFO L226 Difference]: Without dead ends: 362 [2023-11-22 20:55:14,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2023-11-22 20:55:14,424 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 107 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 20:55:14,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 754 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 20:55:14,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-11-22 20:55:14,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 320. [2023-11-22 20:55:14,435 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 20:55:14,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 439 transitions. [2023-11-22 20:55:14,437 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 439 transitions. Word has length 76 [2023-11-22 20:55:14,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:55:14,437 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 439 transitions. [2023-11-22 20:55:14,437 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 20:55:14,438 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 439 transitions. [2023-11-22 20:55:14,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-22 20:55:14,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:55:14,439 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 20:55:14,457 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 20:55:14,652 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 20:55:14,652 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:55:14,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:55:14,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1387465755, now seen corresponding path program 3 times [2023-11-22 20:55:14,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:55:14,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343918568] [2023-11-22 20:55:14,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:14,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:55:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:15,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:15,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 20:55:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:15,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 20:55:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:15,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 20:55:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:15,604 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 20:55:15,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:55:15,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343918568] [2023-11-22 20:55:15,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343918568] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:55:15,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489885742] [2023-11-22 20:55:15,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 20:55:15,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:55:15,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:55:15,606 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 20:55:15,626 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 20:55:15,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-22 20:55:15,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 20:55:15,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 20:55:15,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:55:16,018 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 20:55:16,019 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:55:16,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489885742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:55:16,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:55:16,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [26] total 29 [2023-11-22 20:55:16,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52554276] [2023-11-22 20:55:16,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:55:16,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 20:55:16,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:55:16,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 20:55:16,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=503, Unknown=0, NotChecked=0, Total=812 [2023-11-22 20:55:16,021 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 20:55:16,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:55:16,276 INFO L93 Difference]: Finished difference Result 951 states and 1311 transitions. [2023-11-22 20:55:16,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 20:55:16,277 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 20:55:16,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:55:16,280 INFO L225 Difference]: With dead ends: 951 [2023-11-22 20:55:16,280 INFO L226 Difference]: Without dead ends: 633 [2023-11-22 20:55:16,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=313, Invalid=557, Unknown=0, NotChecked=0, Total=870 [2023-11-22 20:55:16,282 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 126 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 20:55:16,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 627 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 20:55:16,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2023-11-22 20:55:16,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 625. [2023-11-22 20:55:16,316 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 20:55:16,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 861 transitions. [2023-11-22 20:55:16,320 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 861 transitions. Word has length 112 [2023-11-22 20:55:16,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:55:16,321 INFO L495 AbstractCegarLoop]: Abstraction has 625 states and 861 transitions. [2023-11-22 20:55:16,321 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 20:55:16,322 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 861 transitions. [2023-11-22 20:55:16,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-22 20:55:16,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:55:16,328 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 20:55:16,347 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 20:55:16,544 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 20:55:16,544 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:55:16,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:55:16,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1121476708, now seen corresponding path program 1 times [2023-11-22 20:55:16,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:55:16,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909140748] [2023-11-22 20:55:16,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:16,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:55:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:16,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:16,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 20:55:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:16,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 20:55:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:16,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:16,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 20:55:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:16,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-22 20:55:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:16,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 20:55:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:16,711 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 20:55:16,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:55:16,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909140748] [2023-11-22 20:55:16,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909140748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:55:16,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:55:16,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 20:55:16,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166337201] [2023-11-22 20:55:16,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:55:16,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 20:55:16,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:55:16,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 20:55:16,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 20:55:16,713 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 20:55:17,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:55:17,068 INFO L93 Difference]: Finished difference Result 1262 states and 1732 transitions. [2023-11-22 20:55:17,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 20:55:17,069 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 20:55:17,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:55:17,071 INFO L225 Difference]: With dead ends: 1262 [2023-11-22 20:55:17,071 INFO L226 Difference]: Without dead ends: 641 [2023-11-22 20:55:17,072 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 20:55:17,073 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 95 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 20:55:17,073 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 20:55:17,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-11-22 20:55:17,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 460. [2023-11-22 20:55:17,090 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 20:55:17,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 629 transitions. [2023-11-22 20:55:17,092 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 629 transitions. Word has length 147 [2023-11-22 20:55:17,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:55:17,093 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 629 transitions. [2023-11-22 20:55:17,093 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 20:55:17,093 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 629 transitions. [2023-11-22 20:55:17,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-22 20:55:17,094 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:55:17,095 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 20:55:17,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-22 20:55:17,095 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:55:17,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:55:17,096 INFO L85 PathProgramCache]: Analyzing trace with hash -252380702, now seen corresponding path program 2 times [2023-11-22 20:55:17,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:55:17,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560265465] [2023-11-22 20:55:17,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:17,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:55:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:17,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:17,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 20:55:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:17,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 20:55:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:17,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 20:55:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:17,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-22 20:55:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:17,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 20:55:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:17,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:17,535 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 20:55:17,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:55:17,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560265465] [2023-11-22 20:55:17,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560265465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:55:17,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:55:17,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 20:55:17,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557960912] [2023-11-22 20:55:17,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:55:17,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 20:55:17,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:55:17,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 20:55:17,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 20:55:17,538 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 20:55:17,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:55:17,990 INFO L93 Difference]: Finished difference Result 915 states and 1263 transitions. [2023-11-22 20:55:17,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 20:55:17,990 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 20:55:17,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:55:17,992 INFO L225 Difference]: With dead ends: 915 [2023-11-22 20:55:17,993 INFO L226 Difference]: Without dead ends: 482 [2023-11-22 20:55:17,993 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 20:55:17,994 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 20:55:17,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 680 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 20:55:17,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-11-22 20:55:18,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 459. [2023-11-22 20:55:18,009 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 20:55:18,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 626 transitions. [2023-11-22 20:55:18,011 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 626 transitions. Word has length 147 [2023-11-22 20:55:18,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:55:18,011 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 626 transitions. [2023-11-22 20:55:18,012 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 20:55:18,012 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 626 transitions. [2023-11-22 20:55:18,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-22 20:55:18,013 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:55:18,014 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 20:55:18,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-22 20:55:18,014 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:55:18,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:55:18,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1415423521, now seen corresponding path program 1 times [2023-11-22 20:55:18,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:55:18,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20568980] [2023-11-22 20:55:18,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:18,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:55:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:18,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:18,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 20:55:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:18,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 20:55:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:18,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 20:55:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:18,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-22 20:55:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:18,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 20:55:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:18,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:18,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:55:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:18,651 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 20:55:18,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:55:18,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20568980] [2023-11-22 20:55:18,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20568980] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:55:18,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:55:18,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-22 20:55:18,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653451296] [2023-11-22 20:55:18,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:55:18,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-22 20:55:18,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:55:18,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-22 20:55:18,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-22 20:55:18,654 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 20:55:19,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:55:19,258 INFO L93 Difference]: Finished difference Result 920 states and 1268 transitions. [2023-11-22 20:55:19,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 20:55:19,259 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 20:55:19,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:55:19,261 INFO L225 Difference]: With dead ends: 920 [2023-11-22 20:55:19,261 INFO L226 Difference]: Without dead ends: 488 [2023-11-22 20:55:19,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-22 20:55:19,263 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 43 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 20:55:19,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 1198 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 20:55:19,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-11-22 20:55:19,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 465. [2023-11-22 20:55:19,279 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 20:55:19,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 630 transitions. [2023-11-22 20:55:19,281 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 630 transitions. Word has length 153 [2023-11-22 20:55:19,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:55:19,282 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 630 transitions. [2023-11-22 20:55:19,282 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 20:55:19,282 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 630 transitions. [2023-11-22 20:55:19,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-22 20:55:19,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:55:19,284 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 20:55:19,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-22 20:55:19,285 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:55:19,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:55:19,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1912978133, now seen corresponding path program 1 times [2023-11-22 20:55:19,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:55:19,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684675097] [2023-11-22 20:55:19,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:19,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:55:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:20,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:20,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 20:55:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:20,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 20:55:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:20,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 20:55:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:20,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-22 20:55:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:20,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 20:55:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:20,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:20,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:55:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:20,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-22 20:55:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:20,398 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 20:55:20,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:55:20,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684675097] [2023-11-22 20:55:20,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684675097] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:55:20,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5279304] [2023-11-22 20:55:20,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:20,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:55:20,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:55:20,400 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 20:55:20,423 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 20:55:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:20,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-22 20:55:20,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:55:20,872 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 20:55:20,873 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 20:55:21,693 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 20:55:21,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5279304] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 20:55:21,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 20:55:21,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 25] total 52 [2023-11-22 20:55:21,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958833207] [2023-11-22 20:55:21,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 20:55:21,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-22 20:55:21,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:55:21,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-22 20:55:21,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1185, Invalid=1467, Unknown=0, NotChecked=0, Total=2652 [2023-11-22 20:55:21,698 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 20:55:22,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:55:22,331 INFO L93 Difference]: Finished difference Result 1064 states and 1496 transitions. [2023-11-22 20:55:22,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-22 20:55:22,331 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 20:55:22,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:55:22,337 INFO L225 Difference]: With dead ends: 1064 [2023-11-22 20:55:22,337 INFO L226 Difference]: Without dead ends: 626 [2023-11-22 20:55:22,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1185, Invalid=1467, Unknown=0, NotChecked=0, Total=2652 [2023-11-22 20:55:22,339 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 272 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 20:55:22,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 882 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 20:55:22,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-11-22 20:55:22,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 609. [2023-11-22 20:55:22,364 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 20:55:22,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 822 transitions. [2023-11-22 20:55:22,367 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 822 transitions. Word has length 159 [2023-11-22 20:55:22,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:55:22,367 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 822 transitions. [2023-11-22 20:55:22,368 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 20:55:22,368 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 822 transitions. [2023-11-22 20:55:22,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-11-22 20:55:22,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:55:22,370 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 20:55:22,390 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 20:55:22,587 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 20:55:22,587 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:55:22,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:55:22,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1089521749, now seen corresponding path program 2 times [2023-11-22 20:55:22,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:55:22,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203134413] [2023-11-22 20:55:22,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:22,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:55:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:25,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:25,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 20:55:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:25,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-22 20:55:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:25,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 20:55:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:25,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-22 20:55:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:25,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-11-22 20:55:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:25,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:25,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:55:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:25,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-11-22 20:55:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:25,552 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 20:55:25,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:55:25,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203134413] [2023-11-22 20:55:25,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203134413] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:55:25,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741799684] [2023-11-22 20:55:25,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 20:55:25,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:55:25,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:55:25,554 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 20:55:25,604 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 20:55:25,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 20:55:25,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 20:55:25,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-22 20:55:25,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:55:26,371 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 20:55:26,372 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:55:26,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741799684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:55:26,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:55:26,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [52] total 63 [2023-11-22 20:55:26,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407974981] [2023-11-22 20:55:26,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:55:26,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-22 20:55:26,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:55:26,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-22 20:55:26,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1208, Invalid=2698, Unknown=0, NotChecked=0, Total=3906 [2023-11-22 20:55:26,376 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 20:55:26,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:55:26,839 INFO L93 Difference]: Finished difference Result 1229 states and 1669 transitions. [2023-11-22 20:55:26,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-22 20:55:26,840 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 20:55:26,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:55:26,845 INFO L225 Difference]: With dead ends: 1229 [2023-11-22 20:55:26,845 INFO L226 Difference]: Without dead ends: 647 [2023-11-22 20:55:26,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1221, Invalid=3069, Unknown=0, NotChecked=0, Total=4290 [2023-11-22 20:55:26,850 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 21 mSDsluCounter, 2038 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 20:55:26,850 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 20:55:26,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2023-11-22 20:55:26,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 617. [2023-11-22 20:55:26,873 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 20:55:26,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 832 transitions. [2023-11-22 20:55:26,878 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 832 transitions. Word has length 231 [2023-11-22 20:55:26,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:55:26,878 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 832 transitions. [2023-11-22 20:55:26,878 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 20:55:26,879 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 832 transitions. [2023-11-22 20:55:26,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-11-22 20:55:26,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:55:26,881 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 20:55:26,899 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 20:55:27,096 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 20:55:27,097 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:55:27,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:55:27,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1956717130, now seen corresponding path program 1 times [2023-11-22 20:55:27,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:55:27,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685610580] [2023-11-22 20:55:27,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:27,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:55:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:27,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:27,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 20:55:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:27,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-22 20:55:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:27,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 20:55:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:27,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-22 20:55:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:27,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-11-22 20:55:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:27,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:27,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-11-22 20:55:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:27,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-11-22 20:55:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:27,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-11-22 20:55:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:27,396 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 20:55:27,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:55:27,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685610580] [2023-11-22 20:55:27,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685610580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:55:27,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:55:27,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 20:55:27,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804857963] [2023-11-22 20:55:27,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:55:27,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 20:55:27,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:55:27,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 20:55:27,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-22 20:55:27,400 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 20:55:27,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:55:27,805 INFO L93 Difference]: Finished difference Result 936 states and 1274 transitions. [2023-11-22 20:55:27,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 20:55:27,806 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 20:55:27,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:55:27,810 INFO L225 Difference]: With dead ends: 936 [2023-11-22 20:55:27,810 INFO L226 Difference]: Without dead ends: 636 [2023-11-22 20:55:27,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-22 20:55:27,812 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 20:55:27,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 616 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 20:55:27,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2023-11-22 20:55:27,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 619. [2023-11-22 20:55:27,830 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 20:55:27,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 834 transitions. [2023-11-22 20:55:27,832 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 834 transitions. Word has length 239 [2023-11-22 20:55:27,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:55:27,833 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 834 transitions. [2023-11-22 20:55:27,833 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 20:55:27,833 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 834 transitions. [2023-11-22 20:55:27,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-22 20:55:27,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:55:27,836 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 20:55:27,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-22 20:55:27,836 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:55:27,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:55:27,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1864727229, now seen corresponding path program 1 times [2023-11-22 20:55:27,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:55:27,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197895870] [2023-11-22 20:55:27,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:27,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:55:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:28,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:28,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 20:55:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:28,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-22 20:55:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:28,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 20:55:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:28,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-22 20:55:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:28,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-11-22 20:55:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:28,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:28,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-11-22 20:55:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:28,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-11-22 20:55:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:28,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-11-22 20:55:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:28,567 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 20:55:28,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:55:28,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197895870] [2023-11-22 20:55:28,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197895870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:55:28,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:55:28,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-22 20:55:28,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387260973] [2023-11-22 20:55:28,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:55:28,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-22 20:55:28,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:55:28,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-22 20:55:28,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-22 20:55:28,570 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 20:55:29,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:55:29,382 INFO L93 Difference]: Finished difference Result 1237 states and 1674 transitions. [2023-11-22 20:55:29,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-22 20:55:29,383 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 20:55:29,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:55:29,386 INFO L225 Difference]: With dead ends: 1237 [2023-11-22 20:55:29,386 INFO L226 Difference]: Without dead ends: 645 [2023-11-22 20:55:29,387 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 20:55:29,388 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 427 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 20:55:29,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 828 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 20:55:29,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2023-11-22 20:55:29,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 618. [2023-11-22 20:55:29,406 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 20:55:29,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 829 transitions. [2023-11-22 20:55:29,408 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 829 transitions. Word has length 240 [2023-11-22 20:55:29,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:55:29,409 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 829 transitions. [2023-11-22 20:55:29,409 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 20:55:29,409 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 829 transitions. [2023-11-22 20:55:29,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-11-22 20:55:29,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:55:29,412 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 20:55:29,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-22 20:55:29,412 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:55:29,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:55:29,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1738814282, now seen corresponding path program 1 times [2023-11-22 20:55:29,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:55:29,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009301655] [2023-11-22 20:55:29,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:29,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:55:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:32,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:32,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 20:55:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:32,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-22 20:55:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:32,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 20:55:32,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:32,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-22 20:55:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:32,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-11-22 20:55:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:32,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:32,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:55:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:32,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-11-22 20:55:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:32,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2023-11-22 20:55:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:32,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-11-22 20:55:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:32,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-11-22 20:55:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:32,423 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 20:55:32,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:55:32,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009301655] [2023-11-22 20:55:32,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009301655] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:55:32,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886421904] [2023-11-22 20:55:32,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:32,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:55:32,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:55:32,425 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 20:55:32,426 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 20:55:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:33,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 1750 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-22 20:55:33,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:55:33,227 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 20:55:33,227 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 20:55:35,917 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 20:55:35,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886421904] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 20:55:35,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 20:55:35,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 49, 49] total 102 [2023-11-22 20:55:35,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013542319] [2023-11-22 20:55:35,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 20:55:35,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2023-11-22 20:55:35,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:55:35,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2023-11-22 20:55:35,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4672, Invalid=5630, Unknown=0, NotChecked=0, Total=10302 [2023-11-22 20:55:35,923 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 20:55:37,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:55:37,194 INFO L93 Difference]: Finished difference Result 1516 states and 2137 transitions. [2023-11-22 20:55:37,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-11-22 20:55:37,195 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 20:55:37,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:55:37,199 INFO L225 Difference]: With dead ends: 1516 [2023-11-22 20:55:37,199 INFO L226 Difference]: Without dead ends: 925 [2023-11-22 20:55:37,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4678, Invalid=5828, Unknown=0, NotChecked=0, Total=10506 [2023-11-22 20:55:37,205 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 504 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2023-11-22 20:55:37,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 1164 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-22 20:55:37,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2023-11-22 20:55:37,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 906. [2023-11-22 20:55:37,272 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 20:55:37,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1213 transitions. [2023-11-22 20:55:37,275 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1213 transitions. Word has length 252 [2023-11-22 20:55:37,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:55:37,276 INFO L495 AbstractCegarLoop]: Abstraction has 906 states and 1213 transitions. [2023-11-22 20:55:37,276 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 20:55:37,276 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1213 transitions. [2023-11-22 20:55:37,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-11-22 20:55:37,279 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:55:37,279 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 20:55:37,298 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 20:55:37,492 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 20:55:37,493 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:55:37,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:55:37,493 INFO L85 PathProgramCache]: Analyzing trace with hash 2044819530, now seen corresponding path program 2 times [2023-11-22 20:55:37,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:55:37,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211439153] [2023-11-22 20:55:37,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:37,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:55:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:45,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:45,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 20:55:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:45,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-11-22 20:55:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:45,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-11-22 20:55:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:45,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2023-11-22 20:55:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:45,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2023-11-22 20:55:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:45,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:45,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:55:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:45,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2023-11-22 20:55:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:45,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2023-11-22 20:55:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:45,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2023-11-22 20:55:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:45,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2023-11-22 20:55:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:45,471 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 20:55:45,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:55:45,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211439153] [2023-11-22 20:55:45,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211439153] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:55:45,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351629037] [2023-11-22 20:55:45,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 20:55:45,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:55:45,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:55:45,472 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 20:55:45,473 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 20:55:45,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 20:55:45,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 20:55:45,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 20:55:46,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:55:46,133 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 20:55:46,133 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:55:46,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351629037] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:55:46,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:55:46,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [102] total 105 [2023-11-22 20:55:46,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587834996] [2023-11-22 20:55:46,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:55:46,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 20:55:46,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:55:46,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 20:55:46,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4678, Invalid=6242, Unknown=0, NotChecked=0, Total=10920 [2023-11-22 20:55:46,137 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 20:55:46,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:55:46,322 INFO L93 Difference]: Finished difference Result 1789 states and 2401 transitions. [2023-11-22 20:55:46,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 20:55:46,322 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 20:55:46,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:55:46,326 INFO L225 Difference]: With dead ends: 1789 [2023-11-22 20:55:46,326 INFO L226 Difference]: Without dead ends: 906 [2023-11-22 20:55:46,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=4682, Invalid=6448, Unknown=0, NotChecked=0, Total=11130 [2023-11-22 20:55:46,332 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 20:55:46,332 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 20:55:46,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-11-22 20:55:46,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2023-11-22 20:55:46,353 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 20:55:46,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1207 transitions. [2023-11-22 20:55:46,356 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1207 transitions. Word has length 396 [2023-11-22 20:55:46,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:55:46,357 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1207 transitions. [2023-11-22 20:55:46,357 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 20:55:46,357 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1207 transitions. [2023-11-22 20:55:46,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2023-11-22 20:55:46,359 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:55:46,359 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 20:55:46,376 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 20:55:46,576 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 20:55:46,576 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:55:46,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:55:46,577 INFO L85 PathProgramCache]: Analyzing trace with hash -2017042194, now seen corresponding path program 1 times [2023-11-22 20:55:46,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:55:46,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644591082] [2023-11-22 20:55:46,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:46,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:55:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:54,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:54,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 20:55:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:54,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-11-22 20:55:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:54,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-11-22 20:55:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:54,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2023-11-22 20:55:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:54,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2023-11-22 20:55:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:54,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:54,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:55:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:54,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2023-11-22 20:55:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:54,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2023-11-22 20:55:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:54,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2023-11-22 20:55:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:54,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2023-11-22 20:55:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:54,255 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 20:55:54,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:55:54,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644591082] [2023-11-22 20:55:54,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644591082] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:55:54,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107322952] [2023-11-22 20:55:54,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:54,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:55:54,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:55:54,257 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 20:55:54,258 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 20:55:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:55,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 2840 conjuncts, 96 conjunts are in the unsatisfiable core [2023-11-22 20:55:55,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:55:55,434 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 20:55:55,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 20:56:04,922 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 20:56:04,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107322952] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 20:56:04,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 20:56:04,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 97, 97] total 198 [2023-11-22 20:56:04,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732470772] [2023-11-22 20:56:04,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 20:56:04,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 198 states [2023-11-22 20:56:04,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:56:04,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2023-11-22 20:56:04,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18544, Invalid=20462, Unknown=0, NotChecked=0, Total=39006 [2023-11-22 20:56:04,932 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 20:56:10,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:56:10,708 INFO L93 Difference]: Finished difference Result 2370 states and 3361 transitions. [2023-11-22 20:56:10,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2023-11-22 20:56:10,709 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 20:56:10,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:56:10,715 INFO L225 Difference]: With dead ends: 2370 [2023-11-22 20:56:10,715 INFO L226 Difference]: Without dead ends: 1493 [2023-11-22 20:56:10,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 718 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1427 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=18550, Invalid=20852, Unknown=0, NotChecked=0, Total=39402 [2023-11-22 20:56:10,720 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 970 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2023-11-22 20:56:10,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 1185 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-22 20:56:10,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2023-11-22 20:56:10,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 1480. [2023-11-22 20:56:10,750 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 20:56:10,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 1975 transitions. [2023-11-22 20:56:10,755 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 1975 transitions. Word has length 397 [2023-11-22 20:56:10,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:56:10,756 INFO L495 AbstractCegarLoop]: Abstraction has 1480 states and 1975 transitions. [2023-11-22 20:56:10,756 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 20:56:10,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 1975 transitions. [2023-11-22 20:56:10,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-22 20:56:10,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:56:10,762 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 20:56:10,784 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 20:56:10,983 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 20:56:10,984 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:56:10,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:56:10,984 INFO L85 PathProgramCache]: Analyzing trace with hash -800385298, now seen corresponding path program 2 times [2023-11-22 20:56:10,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:56:10,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074014905] [2023-11-22 20:56:10,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:56:10,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:56:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:39,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:56:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:39,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 20:56:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:39,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 593 [2023-11-22 20:56:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:39,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2023-11-22 20:56:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:39,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2023-11-22 20:56:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:39,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2023-11-22 20:56:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:39,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:56:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:39,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:56:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:39,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2023-11-22 20:56:39,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:39,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 650 [2023-11-22 20:56:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:39,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2023-11-22 20:56:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:39,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 666 [2023-11-22 20:56:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:39,541 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 20:56:39,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:56:39,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074014905] [2023-11-22 20:56:39,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074014905] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:56:39,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751454400] [2023-11-22 20:56:39,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 20:56:39,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:56:39,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:56:39,544 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 20:56:39,555 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 20:56:40,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 20:56:40,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 20:56:40,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 20:56:40,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:56:40,639 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 20:56:40,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 20:56:40,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751454400] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:56:40,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 20:56:40,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [198] total 201 [2023-11-22 20:56:40,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739992841] [2023-11-22 20:56:40,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:56:40,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 20:56:40,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:56:40,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 20:56:40,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18550, Invalid=21650, Unknown=0, NotChecked=0, Total=40200 [2023-11-22 20:56:40,649 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 20:56:40,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:56:40,844 INFO L93 Difference]: Finished difference Result 2939 states and 3925 transitions. [2023-11-22 20:56:40,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 20:56:40,844 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 20:56:40,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:56:40,850 INFO L225 Difference]: With dead ends: 2939 [2023-11-22 20:56:40,850 INFO L226 Difference]: Without dead ends: 1484 [2023-11-22 20:56:40,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 702 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=18554, Invalid=22048, Unknown=0, NotChecked=0, Total=40602 [2023-11-22 20:56:40,859 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 20:56:40,859 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 20:56:40,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2023-11-22 20:56:40,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1482. [2023-11-22 20:56:40,889 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 20:56:40,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 1977 transitions. [2023-11-22 20:56:40,892 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 1977 transitions. Word has length 685 [2023-11-22 20:56:40,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:56:40,893 INFO L495 AbstractCegarLoop]: Abstraction has 1482 states and 1977 transitions. [2023-11-22 20:56:40,893 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 20:56:40,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 1977 transitions. [2023-11-22 20:56:40,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2023-11-22 20:56:40,898 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:56:40,898 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 20:56:40,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-22 20:56:41,115 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 20:56:41,116 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:56:41,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:56:41,116 INFO L85 PathProgramCache]: Analyzing trace with hash 319058188, now seen corresponding path program 1 times [2023-11-22 20:56:41,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:56:41,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448808855] [2023-11-22 20:56:41,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:56:41,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:56:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:08,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:57:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:08,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 20:57:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:08,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 593 [2023-11-22 20:57:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:08,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2023-11-22 20:57:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:08,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2023-11-22 20:57:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:09,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2023-11-22 20:57:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:09,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:57:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:09,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:57:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:09,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2023-11-22 20:57:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:09,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 650 [2023-11-22 20:57:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:09,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2023-11-22 20:57:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:09,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 667 [2023-11-22 20:57:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:09,296 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 20:57:09,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:57:09,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448808855] [2023-11-22 20:57:09,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448808855] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:57:09,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782108454] [2023-11-22 20:57:09,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:57:09,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:57:09,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:57:09,298 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 20:57:09,299 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 20:57:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:10,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 4875 conjuncts, 192 conjunts are in the unsatisfiable core [2023-11-22 20:57:10,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:57:11,278 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 20:57:11,278 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 20:57:32,079 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 20:57:32,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782108454] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 20:57:32,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 20:57:32,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [198, 193, 193] total 264 [2023-11-22 20:57:32,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091517494] [2023-11-22 20:57:32,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 20:57:32,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 264 states [2023-11-22 20:57:32,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:57:32,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 264 interpolants. [2023-11-22 20:57:32,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33427, Invalid=36005, Unknown=0, NotChecked=0, Total=69432 [2023-11-22 20:57:32,101 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 20:57:46,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:57:46,405 INFO L93 Difference]: Finished difference Result 3346 states and 4601 transitions. [2023-11-22 20:57:46,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 262 states. [2023-11-22 20:57:46,406 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 20:57:46,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:57:46,412 INFO L225 Difference]: With dead ends: 3346 [2023-11-22 20:57:46,412 INFO L226 Difference]: Without dead ends: 1891 [2023-11-22 20:57:46,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1589 GetRequests, 1200 SyntacticMatches, 126 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18176 ImplicationChecksByTransitivity, 32.7s TimeCoverageRelationStatistics Valid=33433, Invalid=36527, Unknown=0, NotChecked=0, Total=69960 [2023-11-22 20:57:46,418 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 1302 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2023-11-22 20:57:46,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1303 Valid, 1720 Invalid, 1702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1679 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-22 20:57:46,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2023-11-22 20:57:46,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1878. [2023-11-22 20:57:46,448 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 20:57:46,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2505 transitions. [2023-11-22 20:57:46,451 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2505 transitions. Word has length 686 [2023-11-22 20:57:46,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:57:46,451 INFO L495 AbstractCegarLoop]: Abstraction has 1878 states and 2505 transitions. [2023-11-22 20:57:46,452 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 20:57:46,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2505 transitions. [2023-11-22 20:57:46,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2023-11-22 20:57:46,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:57:46,460 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 20:57:46,491 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 20:57:46,687 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 20:57:46,687 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:57:46,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:57:46,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1155808276, now seen corresponding path program 2 times [2023-11-22 20:57:46,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:57:46,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985770124] [2023-11-22 20:57:46,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:57:46,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:57:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:49,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:57:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:49,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 20:57:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:49,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 791 [2023-11-22 20:57:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:49,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 797 [2023-11-22 20:57:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:49,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 811 [2023-11-22 20:57:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:49,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2023-11-22 20:57:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:49,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:57:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:49,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:57:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:49,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 840 [2023-11-22 20:57:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:49,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 848 [2023-11-22 20:57:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:49,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2023-11-22 20:57:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:49,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 865 [2023-11-22 20:57:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:49,297 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 20:57:49,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:57:49,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985770124] [2023-11-22 20:57:49,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985770124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:57:49,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:57:49,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-22 20:57:49,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981515281] [2023-11-22 20:57:49,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:57:49,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-22 20:57:49,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:57:49,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-22 20:57:49,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-22 20:57:49,300 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 20:57:50,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:57:50,153 INFO L93 Difference]: Finished difference Result 3782 states and 5053 transitions. [2023-11-22 20:57:50,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-22 20:57:50,153 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 20:57:50,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:57:50,163 INFO L225 Difference]: With dead ends: 3782 [2023-11-22 20:57:50,163 INFO L226 Difference]: Without dead ends: 2850 [2023-11-22 20:57:50,165 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 20:57:50,165 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 830 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2023-11-22 20:57:50,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 1347 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-22 20:57:50,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2023-11-22 20:57:50,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 2809. [2023-11-22 20:57:50,216 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 20:57:50,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2809 states to 2809 states and 3750 transitions. [2023-11-22 20:57:50,220 INFO L78 Accepts]: Start accepts. Automaton has 2809 states and 3750 transitions. Word has length 884 [2023-11-22 20:57:50,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:57:50,222 INFO L495 AbstractCegarLoop]: Abstraction has 2809 states and 3750 transitions. [2023-11-22 20:57:50,222 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 20:57:50,222 INFO L276 IsEmpty]: Start isEmpty. Operand 2809 states and 3750 transitions. [2023-11-22 20:57:50,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2023-11-22 20:57:50,229 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:57:50,229 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 20:57:50,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-22 20:57:50,230 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:57:50,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:57:50,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1634263029, now seen corresponding path program 1 times [2023-11-22 20:57:50,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:57:50,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208416076] [2023-11-22 20:57:50,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:57:50,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:57:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:51,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:57:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:51,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 20:57:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:51,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 791 [2023-11-22 20:57:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:51,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 797 [2023-11-22 20:57:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:51,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 811 [2023-11-22 20:57:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:51,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2023-11-22 20:57:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:51,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:57:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:51,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:57:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:51,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 840 [2023-11-22 20:57:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:51,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 848 [2023-11-22 20:57:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:51,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2023-11-22 20:57:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:51,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 865 [2023-11-22 20:57:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:51,567 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 20:57:51,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:57:51,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208416076] [2023-11-22 20:57:51,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208416076] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:57:51,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:57:51,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-22 20:57:51,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395693320] [2023-11-22 20:57:51,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:57:51,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 20:57:51,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:57:51,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 20:57:51,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-22 20:57:51,570 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 20:57:51,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:57:51,884 INFO L93 Difference]: Finished difference Result 4689 states and 6271 transitions. [2023-11-22 20:57:51,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 20:57:51,884 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 20:57:51,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:57:51,893 INFO L225 Difference]: With dead ends: 4689 [2023-11-22 20:57:51,893 INFO L226 Difference]: Without dead ends: 2829 [2023-11-22 20:57:51,896 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 20:57:51,896 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 20:57:51,897 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 20:57:51,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2829 states. [2023-11-22 20:57:51,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2829 to 2809. [2023-11-22 20:57:51,947 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 20:57:51,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2809 states to 2809 states and 3748 transitions. [2023-11-22 20:57:51,951 INFO L78 Accepts]: Start accepts. Automaton has 2809 states and 3748 transitions. Word has length 885 [2023-11-22 20:57:51,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:57:51,952 INFO L495 AbstractCegarLoop]: Abstraction has 2809 states and 3748 transitions. [2023-11-22 20:57:51,952 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 20:57:51,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2809 states and 3748 transitions. [2023-11-22 20:57:51,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2023-11-22 20:57:51,959 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:57:51,960 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 20:57:51,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-22 20:57:51,960 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:57:51,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:57:51,961 INFO L85 PathProgramCache]: Analyzing trace with hash -290217212, now seen corresponding path program 1 times [2023-11-22 20:57:51,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:57:51,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769187884] [2023-11-22 20:57:51,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:57:51,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:58:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:58:59,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:58:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:58:59,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 20:58:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:58:59,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 791 [2023-11-22 20:58:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:58:59,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 797 [2023-11-22 20:58:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:58:59,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 811 [2023-11-22 20:58:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:58:59,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2023-11-22 20:58:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:58:59,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:58:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:58:59,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 20:58:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:58:59,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 840 [2023-11-22 20:58:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:58:59,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 848 [2023-11-22 20:58:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:58:59,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2023-11-22 20:58:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:58:59,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 865 [2023-11-22 20:58:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:58:59,497 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 20:58:59,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:58:59,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769187884] [2023-11-22 20:58:59,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769187884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:58:59,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:58:59,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-22 20:58:59,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450746385] [2023-11-22 20:58:59,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:58:59,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 20:58:59,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:58:59,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 20:58:59,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-22 20:58:59,500 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) Killed by 15