./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/ldv-linux-3.12-rc1-todo/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--ipheth.ko-entry_point.cil.out.i --full-output --preprocessor.use.memory.slicer true --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/ldv-linux-3.12-rc1-todo/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--ipheth.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 1a07d05bdda9164d6ceaf1185c6dc5dd43200f7171a99953930c3f9edfac2ac7 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 18:12:41,147 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 18:12:41,225 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-22 18:12:41,232 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 18:12:41,233 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 18:12:41,257 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 18:12:41,258 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 18:12:41,258 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 18:12:41,259 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 18:12:41,259 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 18:12:41,260 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 18:12:41,260 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 18:12:41,261 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 18:12:41,261 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 18:12:41,261 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 18:12:41,262 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 18:12:41,262 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 18:12:41,262 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 18:12:41,263 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 18:12:41,263 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 18:12:41,264 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 18:12:41,264 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 18:12:41,264 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 18:12:41,265 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 18:12:41,265 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 18:12:41,266 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 18:12:41,266 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 18:12:41,266 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 18:12:41,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 18:12:41,267 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 18:12:41,268 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 18:12:41,268 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 18:12:41,268 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 18:12:41,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 18:12:41,269 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 18:12:41,269 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 18:12:41,270 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 18:12:41,270 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 18:12:41,270 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 18:12:41,271 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a07d05bdda9164d6ceaf1185c6dc5dd43200f7171a99953930c3f9edfac2ac7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-22 18:12:41,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 18:12:41,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 18:12:41,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 18:12:41,510 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 18:12:41,511 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 18:12:41,512 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1-todo/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--ipheth.ko-entry_point.cil.out.i [2023-11-22 18:12:42,671 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 18:12:43,099 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 18:12:43,099 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.12-rc1-todo/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--ipheth.ko-entry_point.cil.out.i [2023-11-22 18:12:43,126 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4107f603b/df3d22619edf499bb843ba96a779d7f7/FLAGce59b28bc [2023-11-22 18:12:43,141 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4107f603b/df3d22619edf499bb843ba96a779d7f7 [2023-11-22 18:12:43,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 18:12:43,147 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 18:12:43,149 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 18:12:43,149 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 18:12:43,153 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 18:12:43,155 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:12:43" (1/1) ... [2023-11-22 18:12:43,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fa87b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:12:43, skipping insertion in model container [2023-11-22 18:12:43,156 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:12:43" (1/1) ... [2023-11-22 18:12:43,248 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 18:12:43,867 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-3.12-rc1-todo/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--ipheth.ko-entry_point.cil.out.i[159689,159702] [2023-11-22 18:12:44,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 18:12:44,200 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 18:12:44,281 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [5302] [2023-11-22 18:12:44,282 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [5309] [2023-11-22 18:12:44,283 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %2,%1\n\tsbb %0,%0": "=r" (oldbit), "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [5317-5318] [2023-11-22 18:12:44,294 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-3.12-rc1-todo/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--ipheth.ko-entry_point.cil.out.i[159689,159702] [2023-11-22 18:12:44,453 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 18:12:44,521 INFO L206 MainTranslator]: Completed translation [2023-11-22 18:12:44,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:12:44 WrapperNode [2023-11-22 18:12:44,522 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 18:12:44,523 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 18:12:44,524 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 18:12:44,524 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 18:12:44,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:12:44" (1/1) ... [2023-11-22 18:12:44,588 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:12:44" (1/1) ... [2023-11-22 18:12:44,685 INFO L138 Inliner]: procedures = 165, calls = 708, calls flagged for inlining = 85, calls inlined = 85, statements flattened = 1855 [2023-11-22 18:12:44,686 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 18:12:44,686 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 18:12:44,687 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 18:12:44,687 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 18:12:44,702 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:12:44" (1/1) ... [2023-11-22 18:12:44,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:12:44" (1/1) ... [2023-11-22 18:12:44,718 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:12:44" (1/1) ... [2023-11-22 18:12:44,977 INFO L189 HeapSplitter]: Split 423 memory accesses to 8 slices as follows [2, 363, 2, 7, 42, 0, 0, 7] [2023-11-22 18:12:44,983 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:12:44" (1/1) ... [2023-11-22 18:12:44,984 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:12:44" (1/1) ... [2023-11-22 18:12:45,039 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:12:44" (1/1) ... [2023-11-22 18:12:45,053 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:12:44" (1/1) ... [2023-11-22 18:12:45,070 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:12:44" (1/1) ... [2023-11-22 18:12:45,079 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:12:44" (1/1) ... [2023-11-22 18:12:45,094 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 18:12:45,094 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 18:12:45,095 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 18:12:45,095 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 18:12:45,096 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:12:44" (1/1) ... [2023-11-22 18:12:45,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 18:12:45,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:12:45,129 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 18:12:45,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 18:12:45,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_12 [2023-11-22 18:12:45,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_12 [2023-11-22 18:12:45,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2023-11-22 18:12:45,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2023-11-22 18:12:45,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2023-11-22 18:12:45,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2023-11-22 18:12:45,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2023-11-22 18:12:45,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2023-11-22 18:12:45,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2023-11-22 18:12:45,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2023-11-22 18:12:45,194 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-22 18:12:45,194 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-22 18:12:45,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_8 [2023-11-22 18:12:45,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_8 [2023-11-22 18:12:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure ipheth_rx_submit [2023-11-22 18:12:45,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ipheth_rx_submit [2023-11-22 18:12:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_9 [2023-11-22 18:12:45,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_9 [2023-11-22 18:12:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2023-11-22 18:12:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2023-11-22 18:12:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2023-11-22 18:12:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2023-11-22 18:12:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2023-11-22 18:12:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2023-11-22 18:12:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#6 [2023-11-22 18:12:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#7 [2023-11-22 18:12:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2023-11-22 18:12:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2023-11-22 18:12:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2023-11-22 18:12:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2023-11-22 18:12:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2023-11-22 18:12:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2023-11-22 18:12:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2023-11-22 18:12:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2023-11-22 18:12:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-22 18:12:45,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-22 18:12:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-22 18:12:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-22 18:12:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-22 18:12:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-22 18:12:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-22 18:12:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-22 18:12:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-22 18:12:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-22 18:12:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-22 18:12:45,200 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-22 18:12:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2023-11-22 18:12:45,200 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2023-11-22 18:12:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure ipheth_rcvbulk_callback [2023-11-22 18:12:45,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ipheth_rcvbulk_callback [2023-11-22 18:12:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-22 18:12:45,201 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-22 18:12:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2023-11-22 18:12:45,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2023-11-22 18:12:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#0 [2023-11-22 18:12:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#1 [2023-11-22 18:12:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#2 [2023-11-22 18:12:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#3 [2023-11-22 18:12:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#4 [2023-11-22 18:12:45,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#5 [2023-11-22 18:12:45,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#6 [2023-11-22 18:12:45,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#7 [2023-11-22 18:12:45,203 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#0 [2023-11-22 18:12:45,203 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#1 [2023-11-22 18:12:45,203 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#2 [2023-11-22 18:12:45,204 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#3 [2023-11-22 18:12:45,204 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#4 [2023-11-22 18:12:45,204 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#5 [2023-11-22 18:12:45,204 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#6 [2023-11-22 18:12:45,204 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#7 [2023-11-22 18:12:45,204 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-22 18:12:45,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-22 18:12:45,205 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-22 18:12:45,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-22 18:12:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2023-11-22 18:12:45,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2023-11-22 18:12:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-22 18:12:45,206 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-22 18:12:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-22 18:12:45,206 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-22 18:12:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure ipheth_disconnect [2023-11-22 18:12:45,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ipheth_disconnect [2023-11-22 18:12:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure ipheth_tx_timeout [2023-11-22 18:12:45,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ipheth_tx_timeout [2023-11-22 18:12:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-22 18:12:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-22 18:12:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-22 18:12:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-22 18:12:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-22 18:12:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-22 18:12:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-22 18:12:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-22 18:12:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-22 18:12:45,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-22 18:12:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-22 18:12:45,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-22 18:12:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-22 18:12:45,209 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-22 18:12:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure ipheth_carrier_set [2023-11-22 18:12:45,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ipheth_carrier_set [2023-11-22 18:12:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-22 18:12:45,210 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-22 18:12:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-22 18:12:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2023-11-22 18:12:45,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2023-11-22 18:12:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 18:12:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-22 18:12:45,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-22 18:12:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure ipheth_free_urbs [2023-11-22 18:12:45,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ipheth_free_urbs [2023-11-22 18:12:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 18:12:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-22 18:12:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-22 18:12:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-22 18:12:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-22 18:12:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-22 18:12:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-22 18:12:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-22 18:12:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-22 18:12:45,214 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-22 18:12:45,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-22 18:12:45,214 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2023-11-22 18:12:45,214 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2023-11-22 18:12:45,214 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2023-11-22 18:12:45,214 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2023-11-22 18:12:45,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-22 18:12:45,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-22 18:12:45,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-22 18:12:45,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-22 18:12:45,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-22 18:12:45,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-22 18:12:45,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-22 18:12:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-22 18:12:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-11-22 18:12:45,216 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-11-22 18:12:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 18:12:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-22 18:12:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-22 18:12:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-22 18:12:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-22 18:12:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-22 18:12:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-22 18:12:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-22 18:12:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-22 18:12:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-22 18:12:45,219 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-22 18:12:45,219 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2023-11-22 18:12:45,222 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2023-11-22 18:12:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-22 18:12:45,222 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-22 18:12:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-22 18:12:45,222 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-22 18:12:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2023-11-22 18:12:45,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2023-11-22 18:12:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 18:12:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-22 18:12:45,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-22 18:12:45,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-22 18:12:45,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-22 18:12:45,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-22 18:12:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-22 18:12:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-22 18:12:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2023-11-22 18:12:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2023-11-22 18:12:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2023-11-22 18:12:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2023-11-22 18:12:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2023-11-22 18:12:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2023-11-22 18:12:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2023-11-22 18:12:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2023-11-22 18:12:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#6 [2023-11-22 18:12:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#7 [2023-11-22 18:12:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-22 18:12:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-22 18:12:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2023-11-22 18:12:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2023-11-22 18:12:45,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 18:12:45,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 18:12:45,626 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 18:12:45,629 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 18:12:45,803 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-22 18:12:46,364 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2023-11-22 18:12:47,254 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 18:12:47,454 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 18:12:47,455 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-22 18:12:47,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:12:47 BoogieIcfgContainer [2023-11-22 18:12:47,456 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 18:12:47,458 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 18:12:47,458 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 18:12:47,461 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 18:12:47,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 06:12:43" (1/3) ... [2023-11-22 18:12:47,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac526c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:12:47, skipping insertion in model container [2023-11-22 18:12:47,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:12:44" (2/3) ... [2023-11-22 18:12:47,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac526c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:12:47, skipping insertion in model container [2023-11-22 18:12:47,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:12:47" (3/3) ... [2023-11-22 18:12:47,464 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--ipheth.ko-entry_point.cil.out.i [2023-11-22 18:12:47,480 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 18:12:47,480 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 18:12:47,529 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 18:12:47,535 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;@6e125f4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 18:12:47,535 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 18:12:47,545 INFO L276 IsEmpty]: Start isEmpty. Operand has 480 states, 322 states have (on average 1.4037267080745341) internal successors, (452), 341 states have internal predecessors, (452), 119 states have call successors, (119), 39 states have call predecessors, (119), 37 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-22 18:12:47,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-22 18:12:47,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:12:47,557 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:12:47,557 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:12:47,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:12:47,565 INFO L85 PathProgramCache]: Analyzing trace with hash -630056104, now seen corresponding path program 1 times [2023-11-22 18:12:47,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:12:47,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667502537] [2023-11-22 18:12:47,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:12:47,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:12:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:48,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:12:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:48,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:12:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:48,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:12:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:48,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-22 18:12:48,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:12:48,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667502537] [2023-11-22 18:12:48,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667502537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:12:48,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:12:48,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 18:12:48,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659977909] [2023-11-22 18:12:48,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:12:48,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:12:48,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:12:48,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:12:48,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 18:12:48,144 INFO L87 Difference]: Start difference. First operand has 480 states, 322 states have (on average 1.4037267080745341) internal successors, (452), 341 states have internal predecessors, (452), 119 states have call successors, (119), 39 states have call predecessors, (119), 37 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-22 18:12:50,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:12:50,164 INFO L93 Difference]: Finished difference Result 1487 states and 2199 transitions. [2023-11-22 18:12:50,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:12:50,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2023-11-22 18:12:50,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:12:50,186 INFO L225 Difference]: With dead ends: 1487 [2023-11-22 18:12:50,187 INFO L226 Difference]: Without dead ends: 989 [2023-11-22 18:12:50,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:12:50,197 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 896 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-22 18:12:50,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 1096 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-22 18:12:50,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2023-11-22 18:12:50,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 913. [2023-11-22 18:12:50,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 625 states have (on average 1.352) internal successors, (845), 641 states have internal predecessors, (845), 215 states have call successors, (215), 73 states have call predecessors, (215), 72 states have return successors, (210), 204 states have call predecessors, (210), 210 states have call successors, (210) [2023-11-22 18:12:50,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1270 transitions. [2023-11-22 18:12:50,328 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1270 transitions. Word has length 29 [2023-11-22 18:12:50,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:12:50,328 INFO L495 AbstractCegarLoop]: Abstraction has 913 states and 1270 transitions. [2023-11-22 18:12:50,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-22 18:12:50,329 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1270 transitions. [2023-11-22 18:12:50,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-22 18:12:50,336 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:12:50,336 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] [2023-11-22 18:12:50,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 18:12:50,337 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:12:50,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:12:50,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1891896340, now seen corresponding path program 1 times [2023-11-22 18:12:50,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:12:50,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093386533] [2023-11-22 18:12:50,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:12:50,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:12:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:50,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:12:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:50,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:12:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:50,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:12:50,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:50,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-22 18:12:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:50,518 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-22 18:12:50,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:12:50,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093386533] [2023-11-22 18:12:50,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093386533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:12:50,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:12:50,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 18:12:50,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478955773] [2023-11-22 18:12:50,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:12:50,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:12:50,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:12:50,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:12:50,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 18:12:50,522 INFO L87 Difference]: Start difference. First operand 913 states and 1270 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:12:51,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:12:51,547 INFO L93 Difference]: Finished difference Result 1015 states and 1438 transitions. [2023-11-22 18:12:51,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:12:51,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2023-11-22 18:12:51,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:12:51,554 INFO L225 Difference]: With dead ends: 1015 [2023-11-22 18:12:51,554 INFO L226 Difference]: Without dead ends: 1002 [2023-11-22 18:12:51,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:12:51,555 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 739 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-22 18:12:51,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 695 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-22 18:12:51,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2023-11-22 18:12:51,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 913. [2023-11-22 18:12:51,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 625 states have (on average 1.3504) internal successors, (844), 641 states have internal predecessors, (844), 215 states have call successors, (215), 73 states have call predecessors, (215), 72 states have return successors, (210), 204 states have call predecessors, (210), 210 states have call successors, (210) [2023-11-22 18:12:51,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1269 transitions. [2023-11-22 18:12:51,609 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1269 transitions. Word has length 38 [2023-11-22 18:12:51,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:12:51,610 INFO L495 AbstractCegarLoop]: Abstraction has 913 states and 1269 transitions. [2023-11-22 18:12:51,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:12:51,610 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1269 transitions. [2023-11-22 18:12:51,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-22 18:12:51,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:12:51,612 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] [2023-11-22 18:12:51,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 18:12:51,612 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:12:51,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:12:51,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1834638038, now seen corresponding path program 1 times [2023-11-22 18:12:51,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:12:51,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355776364] [2023-11-22 18:12:51,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:12:51,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:12:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:51,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:12:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:52,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:12:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:52,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:12:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:52,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-22 18:12:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:52,062 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-22 18:12:52,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:12:52,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355776364] [2023-11-22 18:12:52,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355776364] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:12:52,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:12:52,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 18:12:52,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478600582] [2023-11-22 18:12:52,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:12:52,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:12:52,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:12:52,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:12:52,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 18:12:52,065 INFO L87 Difference]: Start difference. First operand 913 states and 1269 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:12:53,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:12:53,924 INFO L93 Difference]: Finished difference Result 2876 states and 4157 transitions. [2023-11-22 18:12:53,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:12:53,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2023-11-22 18:12:53,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:12:53,936 INFO L225 Difference]: With dead ends: 2876 [2023-11-22 18:12:53,936 INFO L226 Difference]: Without dead ends: 1970 [2023-11-22 18:12:53,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:12:53,940 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 902 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-22 18:12:53,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 1089 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-22 18:12:53,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2023-11-22 18:12:54,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1840. [2023-11-22 18:12:54,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1257 states have (on average 1.345266507557677) internal successors, (1691), 1289 states have internal predecessors, (1691), 428 states have call successors, (428), 145 states have call predecessors, (428), 154 states have return successors, (477), 417 states have call predecessors, (477), 423 states have call successors, (477) [2023-11-22 18:12:54,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 2596 transitions. [2023-11-22 18:12:54,061 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 2596 transitions. Word has length 38 [2023-11-22 18:12:54,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:12:54,062 INFO L495 AbstractCegarLoop]: Abstraction has 1840 states and 2596 transitions. [2023-11-22 18:12:54,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:12:54,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 2596 transitions. [2023-11-22 18:12:54,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-22 18:12:54,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:12:54,064 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] [2023-11-22 18:12:54,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-22 18:12:54,064 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:12:54,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:12:54,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1039470687, now seen corresponding path program 1 times [2023-11-22 18:12:54,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:12:54,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771189867] [2023-11-22 18:12:54,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:12:54,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:12:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:54,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:12:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:54,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:12:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:54,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:12:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:54,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-22 18:12:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:54,311 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-22 18:12:54,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:12:54,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771189867] [2023-11-22 18:12:54,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771189867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:12:54,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:12:54,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 18:12:54,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788803759] [2023-11-22 18:12:54,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:12:54,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:12:54,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:12:54,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:12:54,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 18:12:54,314 INFO L87 Difference]: Start difference. First operand 1840 states and 2596 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:12:55,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:12:55,422 INFO L93 Difference]: Finished difference Result 1962 states and 2824 transitions. [2023-11-22 18:12:55,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 18:12:55,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 39 [2023-11-22 18:12:55,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:12:55,432 INFO L225 Difference]: With dead ends: 1962 [2023-11-22 18:12:55,432 INFO L226 Difference]: Without dead ends: 1959 [2023-11-22 18:12:55,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:12:55,434 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 720 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:12:55,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 656 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-22 18:12:55,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2023-11-22 18:12:55,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1839. [2023-11-22 18:12:55,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1839 states, 1257 states have (on average 1.3444709626093874) internal successors, (1690), 1288 states have internal predecessors, (1690), 427 states have call successors, (427), 145 states have call predecessors, (427), 154 states have return successors, (477), 417 states have call predecessors, (477), 423 states have call successors, (477) [2023-11-22 18:12:55,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 2594 transitions. [2023-11-22 18:12:55,535 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 2594 transitions. Word has length 39 [2023-11-22 18:12:55,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:12:55,535 INFO L495 AbstractCegarLoop]: Abstraction has 1839 states and 2594 transitions. [2023-11-22 18:12:55,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:12:55,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 2594 transitions. [2023-11-22 18:12:55,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-22 18:12:55,537 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:12:55,537 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:12:55,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-22 18:12:55,538 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:12:55,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:12:55,538 INFO L85 PathProgramCache]: Analyzing trace with hash 2135885581, now seen corresponding path program 1 times [2023-11-22 18:12:55,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:12:55,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171970858] [2023-11-22 18:12:55,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:12:55,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:12:55,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:55,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:12:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:55,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:12:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:55,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:12:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:55,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-22 18:12:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:55,702 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-22 18:12:55,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:12:55,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171970858] [2023-11-22 18:12:55,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171970858] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:12:55,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:12:55,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 18:12:55,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438014442] [2023-11-22 18:12:55,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:12:55,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:12:55,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:12:55,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:12:55,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 18:12:55,704 INFO L87 Difference]: Start difference. First operand 1839 states and 2594 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:12:56,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:12:56,769 INFO L93 Difference]: Finished difference Result 1961 states and 2822 transitions. [2023-11-22 18:12:56,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 18:12:56,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 40 [2023-11-22 18:12:56,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:12:56,779 INFO L225 Difference]: With dead ends: 1961 [2023-11-22 18:12:56,779 INFO L226 Difference]: Without dead ends: 1958 [2023-11-22 18:12:56,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:12:56,781 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 719 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-22 18:12:56,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 649 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-22 18:12:56,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1958 states. [2023-11-22 18:12:56,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1958 to 1838. [2023-11-22 18:12:56,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1257 states have (on average 1.3436754176610979) internal successors, (1689), 1287 states have internal predecessors, (1689), 426 states have call successors, (426), 145 states have call predecessors, (426), 154 states have return successors, (477), 417 states have call predecessors, (477), 423 states have call successors, (477) [2023-11-22 18:12:56,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2592 transitions. [2023-11-22 18:12:56,878 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2592 transitions. Word has length 40 [2023-11-22 18:12:56,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:12:56,878 INFO L495 AbstractCegarLoop]: Abstraction has 1838 states and 2592 transitions. [2023-11-22 18:12:56,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:12:56,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2592 transitions. [2023-11-22 18:12:56,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-22 18:12:56,880 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:12:56,880 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, 1] [2023-11-22 18:12:56,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-22 18:12:56,880 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:12:56,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:12:56,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1787686948, now seen corresponding path program 1 times [2023-11-22 18:12:56,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:12:56,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103904719] [2023-11-22 18:12:56,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:12:56,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:12:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:56,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:12:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:56,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:12:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:56,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:12:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:57,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-22 18:12:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:57,010 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-22 18:12:57,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:12:57,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103904719] [2023-11-22 18:12:57,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103904719] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:12:57,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:12:57,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 18:12:57,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900910089] [2023-11-22 18:12:57,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:12:57,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:12:57,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:12:57,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:12:57,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 18:12:57,013 INFO L87 Difference]: Start difference. First operand 1838 states and 2592 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:12:58,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:12:58,110 INFO L93 Difference]: Finished difference Result 1960 states and 2820 transitions. [2023-11-22 18:12:58,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 18:12:58,110 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2023-11-22 18:12:58,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:12:58,120 INFO L225 Difference]: With dead ends: 1960 [2023-11-22 18:12:58,120 INFO L226 Difference]: Without dead ends: 1957 [2023-11-22 18:12:58,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:12:58,123 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 715 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:12:58,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 647 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-22 18:12:58,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2023-11-22 18:12:58,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 1837. [2023-11-22 18:12:58,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1837 states, 1257 states have (on average 1.3428798727128082) internal successors, (1688), 1286 states have internal predecessors, (1688), 425 states have call successors, (425), 145 states have call predecessors, (425), 154 states have return successors, (477), 417 states have call predecessors, (477), 423 states have call successors, (477) [2023-11-22 18:12:58,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1837 states to 1837 states and 2590 transitions. [2023-11-22 18:12:58,245 INFO L78 Accepts]: Start accepts. Automaton has 1837 states and 2590 transitions. Word has length 41 [2023-11-22 18:12:58,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:12:58,245 INFO L495 AbstractCegarLoop]: Abstraction has 1837 states and 2590 transitions. [2023-11-22 18:12:58,246 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:12:58,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1837 states and 2590 transitions. [2023-11-22 18:12:58,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-22 18:12:58,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:12:58,247 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, 1, 1] [2023-11-22 18:12:58,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-22 18:12:58,247 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:12:58,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:12:58,248 INFO L85 PathProgramCache]: Analyzing trace with hash -416531216, now seen corresponding path program 1 times [2023-11-22 18:12:58,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:12:58,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305535219] [2023-11-22 18:12:58,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:12:58,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:12:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:58,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:12:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:58,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:12:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:58,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:12:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:58,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-22 18:12:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:58,382 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-22 18:12:58,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:12:58,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305535219] [2023-11-22 18:12:58,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305535219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:12:58,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:12:58,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 18:12:58,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759793868] [2023-11-22 18:12:58,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:12:58,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:12:58,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:12:58,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:12:58,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 18:12:58,385 INFO L87 Difference]: Start difference. First operand 1837 states and 2590 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:12:59,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:12:59,504 INFO L93 Difference]: Finished difference Result 1959 states and 2818 transitions. [2023-11-22 18:12:59,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 18:12:59,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2023-11-22 18:12:59,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:12:59,515 INFO L225 Difference]: With dead ends: 1959 [2023-11-22 18:12:59,515 INFO L226 Difference]: Without dead ends: 1950 [2023-11-22 18:12:59,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:12:59,516 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 713 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-22 18:12:59,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 645 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-22 18:12:59,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2023-11-22 18:12:59,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1830. [2023-11-22 18:12:59,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1830 states, 1251 states have (on average 1.3421262989608314) internal successors, (1679), 1279 states have internal predecessors, (1679), 424 states have call successors, (424), 145 states have call predecessors, (424), 154 states have return successors, (477), 417 states have call predecessors, (477), 423 states have call successors, (477) [2023-11-22 18:12:59,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 2580 transitions. [2023-11-22 18:12:59,648 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 2580 transitions. Word has length 42 [2023-11-22 18:12:59,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:12:59,648 INFO L495 AbstractCegarLoop]: Abstraction has 1830 states and 2580 transitions. [2023-11-22 18:12:59,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-22 18:12:59,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 2580 transitions. [2023-11-22 18:12:59,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-22 18:12:59,653 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:12:59,654 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:12:59,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-22 18:12:59,654 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:12:59,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:12:59,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1514619759, now seen corresponding path program 1 times [2023-11-22 18:12:59,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:12:59,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935784205] [2023-11-22 18:12:59,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:12:59,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:12:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:59,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:12:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:59,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:12:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:59,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:12:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:59,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 18:12:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:59,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-22 18:12:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:59,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 18:12:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:59,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 18:12:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:59,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 18:12:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:59,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-22 18:12:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:59,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-22 18:12:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:59,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:12:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:59,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-22 18:12:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:59,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:12:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:59,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:12:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:59,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-22 18:12:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:59,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-22 18:12:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:59,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 18:12:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:59,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-22 18:12:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:12:59,929 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-22 18:12:59,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:12:59,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935784205] [2023-11-22 18:12:59,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935784205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:12:59,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:12:59,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 18:12:59,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012560599] [2023-11-22 18:12:59,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:12:59,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 18:12:59,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:12:59,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 18:12:59,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:12:59,931 INFO L87 Difference]: Start difference. First operand 1830 states and 2580 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-22 18:13:02,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:13:02,283 INFO L93 Difference]: Finished difference Result 5402 states and 7680 transitions. [2023-11-22 18:13:02,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 18:13:02,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 139 [2023-11-22 18:13:02,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:13:02,303 INFO L225 Difference]: With dead ends: 5402 [2023-11-22 18:13:02,303 INFO L226 Difference]: Without dead ends: 3579 [2023-11-22 18:13:02,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2023-11-22 18:13:02,309 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 1050 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 1816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 613 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:13:02,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 1692 Invalid, 1816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [613 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-22 18:13:02,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2023-11-22 18:13:02,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 3236. [2023-11-22 18:13:02,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3236 states, 2193 states have (on average 1.3365253077975376) internal successors, (2931), 2251 states have internal predecessors, (2931), 729 states have call successors, (729), 274 states have call predecessors, (729), 313 states have return successors, (878), 730 states have call predecessors, (878), 728 states have call successors, (878) [2023-11-22 18:13:02,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3236 states to 3236 states and 4538 transitions. [2023-11-22 18:13:02,586 INFO L78 Accepts]: Start accepts. Automaton has 3236 states and 4538 transitions. Word has length 139 [2023-11-22 18:13:02,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:13:02,586 INFO L495 AbstractCegarLoop]: Abstraction has 3236 states and 4538 transitions. [2023-11-22 18:13:02,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-22 18:13:02,586 INFO L276 IsEmpty]: Start isEmpty. Operand 3236 states and 4538 transitions. [2023-11-22 18:13:02,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-22 18:13:02,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:13:02,594 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:13:02,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-22 18:13:02,594 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:13:02,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:13:02,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1423813119, now seen corresponding path program 1 times [2023-11-22 18:13:02,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:13:02,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468739772] [2023-11-22 18:13:02,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:13:02,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:13:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:02,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:13:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:02,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:13:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:02,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:13:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:02,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-22 18:13:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:02,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-22 18:13:02,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:02,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 18:13:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:02,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 18:13:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:02,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-22 18:13:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:02,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-22 18:13:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:02,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 18:13:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:02,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 18:13:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:02,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-22 18:13:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:02,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 18:13:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:02,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:13:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:02,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:13:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:02,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-22 18:13:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:02,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-22 18:13:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:02,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-22 18:13:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:02,937 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-22 18:13:02,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:13:02,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468739772] [2023-11-22 18:13:02,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468739772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:13:02,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:13:02,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 18:13:02,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987621143] [2023-11-22 18:13:02,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:13:02,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 18:13:02,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:13:02,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 18:13:02,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:13:02,940 INFO L87 Difference]: Start difference. First operand 3236 states and 4538 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-22 18:13:04,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:13:04,384 INFO L93 Difference]: Finished difference Result 6799 states and 9629 transitions. [2023-11-22 18:13:04,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:13:04,385 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 145 [2023-11-22 18:13:04,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:13:04,402 INFO L225 Difference]: With dead ends: 6799 [2023-11-22 18:13:04,402 INFO L226 Difference]: Without dead ends: 3576 [2023-11-22 18:13:04,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:13:04,413 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 374 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:13:04,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 1492 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-22 18:13:04,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3576 states. [2023-11-22 18:13:04,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3576 to 3240. [2023-11-22 18:13:04,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3240 states, 2197 states have (on average 1.3359126081019572) internal successors, (2935), 2255 states have internal predecessors, (2935), 729 states have call successors, (729), 274 states have call predecessors, (729), 313 states have return successors, (878), 730 states have call predecessors, (878), 728 states have call successors, (878) [2023-11-22 18:13:04,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3240 states to 3240 states and 4542 transitions. [2023-11-22 18:13:04,723 INFO L78 Accepts]: Start accepts. Automaton has 3240 states and 4542 transitions. Word has length 145 [2023-11-22 18:13:04,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:13:04,724 INFO L495 AbstractCegarLoop]: Abstraction has 3240 states and 4542 transitions. [2023-11-22 18:13:04,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-22 18:13:04,725 INFO L276 IsEmpty]: Start isEmpty. Operand 3240 states and 4542 transitions. [2023-11-22 18:13:04,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-22 18:13:04,734 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:13:04,734 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:13:04,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-22 18:13:04,734 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:13:04,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:13:04,735 INFO L85 PathProgramCache]: Analyzing trace with hash 310291331, now seen corresponding path program 1 times [2023-11-22 18:13:04,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:13:04,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740919419] [2023-11-22 18:13:04,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:13:04,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:13:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:05,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:13:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:05,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:13:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:05,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:13:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:05,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-22 18:13:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:05,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-22 18:13:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:05,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 18:13:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:05,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 18:13:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:05,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-22 18:13:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:05,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-22 18:13:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:05,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 18:13:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:05,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 18:13:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:05,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-22 18:13:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:05,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 18:13:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:05,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:13:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:05,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:13:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:05,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-22 18:13:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:05,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-22 18:13:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:05,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-22 18:13:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:05,183 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-22 18:13:05,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:13:05,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740919419] [2023-11-22 18:13:05,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740919419] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:13:05,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508291519] [2023-11-22 18:13:05,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:13:05,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:13:05,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:13:05,186 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:13:05,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 18:13:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:05,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 1987 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-22 18:13:05,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:13:05,906 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-22 18:13:05,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:13:05,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508291519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:13:05,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:13:05,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-11-22 18:13:05,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218787633] [2023-11-22 18:13:05,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:13:05,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:13:05,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:13:05,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:13:05,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:13:05,910 INFO L87 Difference]: Start difference. First operand 3240 states and 4542 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-22 18:13:06,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:13:06,374 INFO L93 Difference]: Finished difference Result 6503 states and 9115 transitions. [2023-11-22 18:13:06,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 18:13:06,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 145 [2023-11-22 18:13:06,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:13:06,392 INFO L225 Difference]: With dead ends: 6503 [2023-11-22 18:13:06,392 INFO L226 Difference]: Without dead ends: 3276 [2023-11-22 18:13:06,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:13:06,401 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 7 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:13:06,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1656 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 18:13:06,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3276 states. [2023-11-22 18:13:06,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3276 to 3248. [2023-11-22 18:13:06,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3248 states, 2205 states have (on average 1.3346938775510204) internal successors, (2943), 2263 states have internal predecessors, (2943), 729 states have call successors, (729), 274 states have call predecessors, (729), 313 states have return successors, (878), 730 states have call predecessors, (878), 728 states have call successors, (878) [2023-11-22 18:13:06,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3248 states to 3248 states and 4550 transitions. [2023-11-22 18:13:06,627 INFO L78 Accepts]: Start accepts. Automaton has 3248 states and 4550 transitions. Word has length 145 [2023-11-22 18:13:06,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:13:06,628 INFO L495 AbstractCegarLoop]: Abstraction has 3248 states and 4550 transitions. [2023-11-22 18:13:06,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-22 18:13:06,628 INFO L276 IsEmpty]: Start isEmpty. Operand 3248 states and 4550 transitions. [2023-11-22 18:13:06,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-22 18:13:06,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:13:06,636 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:13:06,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-22 18:13:06,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-22 18:13:06,858 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:13:06,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:13:06,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1931300825, now seen corresponding path program 1 times [2023-11-22 18:13:06,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:13:06,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379235005] [2023-11-22 18:13:06,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:13:06,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:13:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:07,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:13:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:07,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:13:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:07,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:13:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:07,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-22 18:13:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:07,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-22 18:13:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:07,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 18:13:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:07,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 18:13:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:07,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-22 18:13:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:07,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-22 18:13:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:07,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 18:13:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:07,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 18:13:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:07,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-22 18:13:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:07,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 18:13:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:07,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:13:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:07,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:13:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:07,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-22 18:13:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:07,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-22 18:13:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:07,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-22 18:13:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:07,296 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-22 18:13:07,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:13:07,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379235005] [2023-11-22 18:13:07,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379235005] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:13:07,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348597863] [2023-11-22 18:13:07,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:13:07,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:13:07,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:13:07,300 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:13:07,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 18:13:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:07,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 2007 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-22 18:13:07,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:13:08,023 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-22 18:13:08,024 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:13:08,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348597863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:13:08,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:13:08,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2023-11-22 18:13:08,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617471573] [2023-11-22 18:13:08,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:13:08,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 18:13:08,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:13:08,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 18:13:08,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-22 18:13:08,026 INFO L87 Difference]: Start difference. First operand 3248 states and 4550 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-22 18:13:09,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:13:09,619 INFO L93 Difference]: Finished difference Result 12148 states and 17476 transitions. [2023-11-22 18:13:09,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-22 18:13:09,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 150 [2023-11-22 18:13:09,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:13:09,661 INFO L225 Difference]: With dead ends: 12148 [2023-11-22 18:13:09,662 INFO L226 Difference]: Without dead ends: 8913 [2023-11-22 18:13:09,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2023-11-22 18:13:09,675 INFO L413 NwaCegarLoop]: 1294 mSDtfsCounter, 1170 mSDsluCounter, 4396 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 5690 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:13:09,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1213 Valid, 5690 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-22 18:13:09,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8913 states. [2023-11-22 18:13:10,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8913 to 6546. [2023-11-22 18:13:10,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6546 states, 4443 states have (on average 1.3310826018456) internal successors, (5914), 4571 states have internal predecessors, (5914), 1477 states have call successors, (1477), 546 states have call predecessors, (1477), 625 states have return successors, (1776), 1468 states have call predecessors, (1776), 1476 states have call successors, (1776) [2023-11-22 18:13:10,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6546 states to 6546 states and 9167 transitions. [2023-11-22 18:13:10,297 INFO L78 Accepts]: Start accepts. Automaton has 6546 states and 9167 transitions. Word has length 150 [2023-11-22 18:13:10,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:13:10,297 INFO L495 AbstractCegarLoop]: Abstraction has 6546 states and 9167 transitions. [2023-11-22 18:13:10,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-22 18:13:10,298 INFO L276 IsEmpty]: Start isEmpty. Operand 6546 states and 9167 transitions. [2023-11-22 18:13:10,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-22 18:13:10,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:13:10,313 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:13:10,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-22 18:13:10,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-22 18:13:10,528 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:13:10,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:13:10,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1662601893, now seen corresponding path program 1 times [2023-11-22 18:13:10,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:13:10,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137761504] [2023-11-22 18:13:10,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:13:10,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:13:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:11,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:13:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:11,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:13:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:11,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:13:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:11,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-22 18:13:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:11,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-22 18:13:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:11,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 18:13:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:11,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 18:13:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:11,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-22 18:13:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:11,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-22 18:13:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:11,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 18:13:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:11,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 18:13:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:11,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-22 18:13:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:11,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 18:13:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:11,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:13:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:11,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:13:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:11,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-22 18:13:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:11,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-22 18:13:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:11,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-22 18:13:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:11,233 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-22 18:13:11,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:13:11,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137761504] [2023-11-22 18:13:11,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137761504] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:13:11,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638275933] [2023-11-22 18:13:11,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:13:11,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:13:11,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:13:11,235 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:13:11,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 18:13:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:11,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 2002 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-22 18:13:11,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:13:12,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-22 18:13:12,022 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-22 18:13:12,023 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:13:12,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638275933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:13:12,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:13:12,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2023-11-22 18:13:12,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256600032] [2023-11-22 18:13:12,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:13:12,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 18:13:12,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:13:12,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 18:13:12,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-11-22 18:13:12,025 INFO L87 Difference]: Start difference. First operand 6546 states and 9167 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-22 18:13:13,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:13:13,606 INFO L93 Difference]: Finished difference Result 13103 states and 18349 transitions. [2023-11-22 18:13:13,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:13:13,606 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 150 [2023-11-22 18:13:13,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:13:13,632 INFO L225 Difference]: With dead ends: 13103 [2023-11-22 18:13:13,632 INFO L226 Difference]: Without dead ends: 6570 [2023-11-22 18:13:13,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-11-22 18:13:13,652 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 648 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:13:13,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 1230 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-22 18:13:13,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6570 states. [2023-11-22 18:13:14,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6570 to 6562. [2023-11-22 18:13:14,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6562 states, 4459 states have (on average 1.3298945952007177) internal successors, (5930), 4587 states have internal predecessors, (5930), 1477 states have call successors, (1477), 546 states have call predecessors, (1477), 625 states have return successors, (1776), 1468 states have call predecessors, (1776), 1476 states have call successors, (1776) [2023-11-22 18:13:14,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6562 states to 6562 states and 9183 transitions. [2023-11-22 18:13:14,134 INFO L78 Accepts]: Start accepts. Automaton has 6562 states and 9183 transitions. Word has length 150 [2023-11-22 18:13:14,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:13:14,134 INFO L495 AbstractCegarLoop]: Abstraction has 6562 states and 9183 transitions. [2023-11-22 18:13:14,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-22 18:13:14,134 INFO L276 IsEmpty]: Start isEmpty. Operand 6562 states and 9183 transitions. [2023-11-22 18:13:14,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-22 18:13:14,148 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:13:14,148 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:13:14,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-22 18:13:14,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:13:14,364 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:13:14,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:13:14,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1279036736, now seen corresponding path program 1 times [2023-11-22 18:13:14,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:13:14,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257986481] [2023-11-22 18:13:14,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:13:14,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:13:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:14,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:13:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:14,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:13:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:14,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:13:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:14,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-22 18:13:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:14,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-22 18:13:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:14,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 18:13:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:14,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 18:13:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:14,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 18:13:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:14,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-22 18:13:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:14,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 18:13:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:14,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 18:13:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:14,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-22 18:13:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:15,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 18:13:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:15,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:13:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:15,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:13:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:15,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-22 18:13:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:15,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-22 18:13:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:15,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-22 18:13:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:15,046 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-22 18:13:15,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:13:15,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257986481] [2023-11-22 18:13:15,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257986481] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:13:15,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817801065] [2023-11-22 18:13:15,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:13:15,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:13:15,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:13:15,048 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:13:15,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 18:13:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:15,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 2019 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-22 18:13:15,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:13:15,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-22 18:13:15,864 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-22 18:13:15,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:13:16,114 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-22 18:13:16,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817801065] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:13:16,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:13:16,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 7] total 20 [2023-11-22 18:13:16,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368846606] [2023-11-22 18:13:16,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:13:16,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-22 18:13:16,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:13:16,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-22 18:13:16,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2023-11-22 18:13:16,119 INFO L87 Difference]: Start difference. First operand 6562 states and 9183 transitions. Second operand has 20 states, 20 states have (on average 9.1) internal successors, (182), 14 states have internal predecessors, (182), 4 states have call successors, (49), 10 states have call predecessors, (49), 6 states have return successors, (42), 5 states have call predecessors, (42), 4 states have call successors, (42) [2023-11-22 18:13:19,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:13:19,935 INFO L93 Difference]: Finished difference Result 14045 states and 19989 transitions. [2023-11-22 18:13:19,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-22 18:13:19,935 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 9.1) internal successors, (182), 14 states have internal predecessors, (182), 4 states have call successors, (49), 10 states have call predecessors, (49), 6 states have return successors, (42), 5 states have call predecessors, (42), 4 states have call successors, (42) Word has length 152 [2023-11-22 18:13:19,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:13:19,967 INFO L225 Difference]: With dead ends: 14045 [2023-11-22 18:13:19,967 INFO L226 Difference]: Without dead ends: 7480 [2023-11-22 18:13:19,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=154, Invalid=716, Unknown=0, NotChecked=0, Total=870 [2023-11-22 18:13:19,990 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 1533 mSDsluCounter, 3367 mSDsCounter, 0 mSdLazyCounter, 3872 mSolverCounterSat, 1045 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 3714 SdHoareTripleChecker+Invalid, 4917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1045 IncrementalHoareTripleChecker+Valid, 3872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:13:19,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1591 Valid, 3714 Invalid, 4917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1045 Valid, 3872 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-22 18:13:19,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7480 states. [2023-11-22 18:13:20,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7480 to 6578. [2023-11-22 18:13:20,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6578 states, 4475 states have (on average 1.3287150837988826) internal successors, (5946), 4603 states have internal predecessors, (5946), 1477 states have call successors, (1477), 546 states have call predecessors, (1477), 625 states have return successors, (1768), 1468 states have call predecessors, (1768), 1476 states have call successors, (1768) [2023-11-22 18:13:20,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6578 states to 6578 states and 9191 transitions. [2023-11-22 18:13:20,639 INFO L78 Accepts]: Start accepts. Automaton has 6578 states and 9191 transitions. Word has length 152 [2023-11-22 18:13:20,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:13:20,639 INFO L495 AbstractCegarLoop]: Abstraction has 6578 states and 9191 transitions. [2023-11-22 18:13:20,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.1) internal successors, (182), 14 states have internal predecessors, (182), 4 states have call successors, (49), 10 states have call predecessors, (49), 6 states have return successors, (42), 5 states have call predecessors, (42), 4 states have call successors, (42) [2023-11-22 18:13:20,639 INFO L276 IsEmpty]: Start isEmpty. Operand 6578 states and 9191 transitions. [2023-11-22 18:13:20,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-22 18:13:20,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:13:20,654 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:13:20,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-22 18:13:20,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:13:20,868 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:13:20,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:13:20,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1024985462, now seen corresponding path program 1 times [2023-11-22 18:13:20,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:13:20,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053976876] [2023-11-22 18:13:20,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:13:20,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:13:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:21,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:13:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:21,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:13:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:21,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:13:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:21,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-22 18:13:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:21,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-22 18:13:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:21,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:21,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:13:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:21,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-22 18:13:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:21,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-22 18:13:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:21,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-22 18:13:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:21,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 18:13:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:21,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-22 18:13:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:21,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-22 18:13:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:21,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-22 18:13:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:21,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:13:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:21,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:13:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:21,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-22 18:13:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:21,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-22 18:13:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:21,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-22 18:13:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:21,575 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-22 18:13:21,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:13:21,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053976876] [2023-11-22 18:13:21,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053976876] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:13:21,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179912872] [2023-11-22 18:13:21,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:13:21,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:13:21,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:13:21,580 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:13:21,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-22 18:13:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:22,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 2062 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-22 18:13:22,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:13:22,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-22 18:13:22,507 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 31 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-22 18:13:22,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:13:22,761 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-22 18:13:22,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179912872] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:13:22,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:13:22,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 8] total 22 [2023-11-22 18:13:22,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193283981] [2023-11-22 18:13:22,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:13:22,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-22 18:13:22,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:13:22,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-22 18:13:22,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2023-11-22 18:13:22,764 INFO L87 Difference]: Start difference. First operand 6578 states and 9191 transitions. Second operand has 22 states, 22 states have (on average 8.909090909090908) internal successors, (196), 16 states have internal predecessors, (196), 4 states have call successors, (51), 10 states have call predecessors, (51), 6 states have return successors, (44), 5 states have call predecessors, (44), 4 states have call successors, (44) [2023-11-22 18:13:26,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:13:26,958 INFO L93 Difference]: Finished difference Result 14081 states and 20017 transitions. [2023-11-22 18:13:26,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-22 18:13:26,964 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.909090909090908) internal successors, (196), 16 states have internal predecessors, (196), 4 states have call successors, (51), 10 states have call predecessors, (51), 6 states have return successors, (44), 5 states have call predecessors, (44), 4 states have call successors, (44) Word has length 160 [2023-11-22 18:13:26,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:13:26,996 INFO L225 Difference]: With dead ends: 14081 [2023-11-22 18:13:26,996 INFO L226 Difference]: Without dead ends: 7516 [2023-11-22 18:13:27,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2023-11-22 18:13:27,013 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 1994 mSDsluCounter, 3771 mSDsCounter, 0 mSdLazyCounter, 4578 mSolverCounterSat, 1201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2052 SdHoareTripleChecker+Valid, 4118 SdHoareTripleChecker+Invalid, 5779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1201 IncrementalHoareTripleChecker+Valid, 4578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-22 18:13:27,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2052 Valid, 4118 Invalid, 5779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1201 Valid, 4578 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-22 18:13:27,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7516 states. [2023-11-22 18:13:27,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7516 to 6602. [2023-11-22 18:13:27,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6602 states, 4499 states have (on average 1.3269615470104468) internal successors, (5970), 4623 states have internal predecessors, (5970), 1477 states have call successors, (1477), 546 states have call predecessors, (1477), 625 states have return successors, (1768), 1472 states have call predecessors, (1768), 1476 states have call successors, (1768) [2023-11-22 18:13:27,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6602 states to 6602 states and 9215 transitions. [2023-11-22 18:13:27,657 INFO L78 Accepts]: Start accepts. Automaton has 6602 states and 9215 transitions. Word has length 160 [2023-11-22 18:13:27,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:13:27,658 INFO L495 AbstractCegarLoop]: Abstraction has 6602 states and 9215 transitions. [2023-11-22 18:13:27,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.909090909090908) internal successors, (196), 16 states have internal predecessors, (196), 4 states have call successors, (51), 10 states have call predecessors, (51), 6 states have return successors, (44), 5 states have call predecessors, (44), 4 states have call successors, (44) [2023-11-22 18:13:27,658 INFO L276 IsEmpty]: Start isEmpty. Operand 6602 states and 9215 transitions. [2023-11-22 18:13:27,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-22 18:13:27,678 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:13:27,678 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:13:27,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-22 18:13:27,888 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,SelfDestructingSolverStorable13 [2023-11-22 18:13:27,888 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:13:27,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:13:27,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1890641876, now seen corresponding path program 2 times [2023-11-22 18:13:27,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:13:27,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381336404] [2023-11-22 18:13:27,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:13:27,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:13:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:28,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:13:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:28,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:13:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:28,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:13:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:28,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-22 18:13:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:28,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-22 18:13:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:28,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:28,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:13:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:28,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:28,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-22 18:13:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:28,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 18:13:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:28,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-22 18:13:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:28,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-22 18:13:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:28,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 18:13:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:28,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-22 18:13:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:28,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-22 18:13:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:28,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:13:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:28,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:13:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:28,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 18:13:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:28,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-22 18:13:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:28,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-11-22 18:13:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:28,545 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-22 18:13:28,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:13:28,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381336404] [2023-11-22 18:13:28,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381336404] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:13:28,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569288204] [2023-11-22 18:13:28,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 18:13:28,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:13:28,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:13:28,547 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:13:28,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-22 18:13:29,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 18:13:29,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:13:29,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 2105 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-22 18:13:29,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:13:29,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-22 18:13:29,437 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 31 proven. 12 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-22 18:13:29,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:13:29,661 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-22 18:13:29,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569288204] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:13:29,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:13:29,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 9] total 24 [2023-11-22 18:13:29,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663506490] [2023-11-22 18:13:29,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:13:29,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-22 18:13:29,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:13:29,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-22 18:13:29,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2023-11-22 18:13:29,664 INFO L87 Difference]: Start difference. First operand 6602 states and 9215 transitions. Second operand has 24 states, 24 states have (on average 8.458333333333334) internal successors, (203), 18 states have internal predecessors, (203), 4 states have call successors, (52), 10 states have call predecessors, (52), 6 states have return successors, (46), 5 states have call predecessors, (46), 4 states have call successors, (46) [2023-11-22 18:13:33,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:13:33,874 INFO L93 Difference]: Finished difference Result 14165 states and 20117 transitions. [2023-11-22 18:13:33,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-22 18:13:33,875 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 8.458333333333334) internal successors, (203), 18 states have internal predecessors, (203), 4 states have call successors, (52), 10 states have call predecessors, (52), 6 states have return successors, (46), 5 states have call predecessors, (46), 4 states have call successors, (46) Word has length 168 [2023-11-22 18:13:33,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:13:33,906 INFO L225 Difference]: With dead ends: 14165 [2023-11-22 18:13:33,906 INFO L226 Difference]: Without dead ends: 7576 [2023-11-22 18:13:33,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=170, Invalid=952, Unknown=0, NotChecked=0, Total=1122 [2023-11-22 18:13:33,926 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 2457 mSDsluCounter, 3539 mSDsCounter, 0 mSdLazyCounter, 4389 mSolverCounterSat, 1610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2515 SdHoareTripleChecker+Valid, 3885 SdHoareTripleChecker+Invalid, 5999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1610 IncrementalHoareTripleChecker+Valid, 4389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-22 18:13:33,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2515 Valid, 3885 Invalid, 5999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1610 Valid, 4389 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-22 18:13:33,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7576 states. [2023-11-22 18:13:34,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7576 to 6634. [2023-11-22 18:13:34,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6634 states, 4531 states have (on average 1.3246523946148754) internal successors, (6002), 4647 states have internal predecessors, (6002), 1477 states have call successors, (1477), 546 states have call predecessors, (1477), 625 states have return successors, (1768), 1480 states have call predecessors, (1768), 1476 states have call successors, (1768) [2023-11-22 18:13:34,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6634 states to 6634 states and 9247 transitions. [2023-11-22 18:13:34,566 INFO L78 Accepts]: Start accepts. Automaton has 6634 states and 9247 transitions. Word has length 168 [2023-11-22 18:13:34,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:13:34,566 INFO L495 AbstractCegarLoop]: Abstraction has 6634 states and 9247 transitions. [2023-11-22 18:13:34,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 8.458333333333334) internal successors, (203), 18 states have internal predecessors, (203), 4 states have call successors, (52), 10 states have call predecessors, (52), 6 states have return successors, (46), 5 states have call predecessors, (46), 4 states have call successors, (46) [2023-11-22 18:13:34,567 INFO L276 IsEmpty]: Start isEmpty. Operand 6634 states and 9247 transitions. [2023-11-22 18:13:34,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:13:34,585 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:13:34,585 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:13:34,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-22 18:13:34,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-22 18:13:34,803 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:13:34,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:13:34,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1060085410, now seen corresponding path program 3 times [2023-11-22 18:13:34,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:13:34,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588585151] [2023-11-22 18:13:34,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:13:34,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:13:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:35,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:13:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:35,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:13:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:35,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:13:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:35,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-22 18:13:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:35,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-22 18:13:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:35,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:35,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:13:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:35,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:35,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:13:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:35,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 18:13:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:35,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:35,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 18:13:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:35,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 18:13:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:35,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-22 18:13:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:35,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-22 18:13:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:35,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-22 18:13:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:35,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:13:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:35,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:13:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:35,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-22 18:13:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:35,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-11-22 18:13:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:35,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-11-22 18:13:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:35,140 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-11-22 18:13:35,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:13:35,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588585151] [2023-11-22 18:13:35,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588585151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:13:35,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:13:35,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 18:13:35,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173617292] [2023-11-22 18:13:35,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:13:35,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 18:13:35,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:13:35,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 18:13:35,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:13:35,143 INFO L87 Difference]: Start difference. First operand 6634 states and 9247 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-22 18:13:37,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:13:37,224 INFO L93 Difference]: Finished difference Result 14133 states and 20037 transitions. [2023-11-22 18:13:37,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:13:37,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 176 [2023-11-22 18:13:37,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:13:37,252 INFO L225 Difference]: With dead ends: 14133 [2023-11-22 18:13:37,252 INFO L226 Difference]: Without dead ends: 7512 [2023-11-22 18:13:37,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:13:37,267 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 773 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 661 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 661 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-22 18:13:37,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 1390 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [661 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-22 18:13:37,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7512 states. [2023-11-22 18:13:37,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7512 to 6618. [2023-11-22 18:13:37,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6618 states, 4523 states have (on average 1.3234578819367677) internal successors, (5986), 4639 states have internal predecessors, (5986), 1469 states have call successors, (1469), 546 states have call predecessors, (1469), 625 states have return successors, (1760), 1472 states have call predecessors, (1760), 1468 states have call successors, (1760) [2023-11-22 18:13:37,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6618 states to 6618 states and 9215 transitions. [2023-11-22 18:13:37,877 INFO L78 Accepts]: Start accepts. Automaton has 6618 states and 9215 transitions. Word has length 176 [2023-11-22 18:13:37,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:13:37,878 INFO L495 AbstractCegarLoop]: Abstraction has 6618 states and 9215 transitions. [2023-11-22 18:13:37,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-22 18:13:37,878 INFO L276 IsEmpty]: Start isEmpty. Operand 6618 states and 9215 transitions. [2023-11-22 18:13:37,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-22 18:13:37,897 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:13:37,898 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:13:37,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-22 18:13:37,898 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:13:37,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:13:37,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1016408350, now seen corresponding path program 1 times [2023-11-22 18:13:37,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:13:37,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205570863] [2023-11-22 18:13:37,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:13:37,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:13:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:38,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:13:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:38,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:13:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:38,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:13:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:38,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-22 18:13:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:38,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-22 18:13:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:38,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:38,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:13:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:38,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:38,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:13:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:38,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 18:13:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:38,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:38,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 18:13:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:38,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 18:13:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:38,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-22 18:13:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:38,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-22 18:13:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:38,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-22 18:13:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:38,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:13:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:38,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:13:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:38,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-22 18:13:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:38,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-11-22 18:13:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:38,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-11-22 18:13:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:38,678 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-22 18:13:38,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:13:38,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205570863] [2023-11-22 18:13:38,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205570863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:13:38,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:13:38,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-22 18:13:38,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009687277] [2023-11-22 18:13:38,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:13:38,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 18:13:38,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:13:38,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 18:13:38,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:13:38,682 INFO L87 Difference]: Start difference. First operand 6618 states and 9215 transitions. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (20), 7 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-22 18:13:41,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:13:41,039 INFO L93 Difference]: Finished difference Result 14125 states and 20017 transitions. [2023-11-22 18:13:41,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 18:13:41,040 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (20), 7 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 176 [2023-11-22 18:13:41,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:13:41,071 INFO L225 Difference]: With dead ends: 14125 [2023-11-22 18:13:41,071 INFO L226 Difference]: Without dead ends: 7520 [2023-11-22 18:13:41,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2023-11-22 18:13:41,087 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 574 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 1634 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 2104 SdHoareTripleChecker+Invalid, 2131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 1634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-22 18:13:41,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 2104 Invalid, 2131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 1634 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-22 18:13:41,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7520 states. [2023-11-22 18:13:41,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7520 to 6638. [2023-11-22 18:13:41,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6638 states, 4539 states have (on average 1.3223176911213923) internal successors, (6002), 4651 states have internal predecessors, (6002), 1473 states have call successors, (1473), 546 states have call predecessors, (1473), 625 states have return successors, (1764), 1480 states have call predecessors, (1764), 1472 states have call successors, (1764) [2023-11-22 18:13:41,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6638 states to 6638 states and 9239 transitions. [2023-11-22 18:13:41,695 INFO L78 Accepts]: Start accepts. Automaton has 6638 states and 9239 transitions. Word has length 176 [2023-11-22 18:13:41,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:13:41,695 INFO L495 AbstractCegarLoop]: Abstraction has 6638 states and 9239 transitions. [2023-11-22 18:13:41,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (20), 7 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-22 18:13:41,696 INFO L276 IsEmpty]: Start isEmpty. Operand 6638 states and 9239 transitions. [2023-11-22 18:13:41,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-22 18:13:41,709 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:13:41,709 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:13:41,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-22 18:13:41,709 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:13:41,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:13:41,710 INFO L85 PathProgramCache]: Analyzing trace with hash -309986425, now seen corresponding path program 2 times [2023-11-22 18:13:41,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:13:41,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769034893] [2023-11-22 18:13:41,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:13:41,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:13:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:42,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:13:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:42,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:13:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:42,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:13:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:42,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-22 18:13:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:42,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-22 18:13:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:42,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:42,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:13:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:42,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:42,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-22 18:13:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:42,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 18:13:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:42,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:42,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 18:13:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:42,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 18:13:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:42,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-22 18:13:42,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:42,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-22 18:13:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:42,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-22 18:13:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:42,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:13:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:42,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:42,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:13:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:42,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-11-22 18:13:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:42,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-22 18:13:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:42,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 18:13:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:42,679 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-11-22 18:13:42,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:13:42,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769034893] [2023-11-22 18:13:42,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769034893] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:13:42,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688286248] [2023-11-22 18:13:42,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 18:13:42,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:13:42,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:13:42,682 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:13:42,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-22 18:13:43,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 18:13:43,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:13:43,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 2174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-22 18:13:43,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:13:43,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-22 18:13:43,586 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 55 proven. 20 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-22 18:13:43,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:13:43,907 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-22 18:13:43,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688286248] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:13:43,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:13:43,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 26 [2023-11-22 18:13:43,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550896994] [2023-11-22 18:13:43,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:13:43,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-22 18:13:43,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:13:43,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-22 18:13:43,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2023-11-22 18:13:43,910 INFO L87 Difference]: Start difference. First operand 6638 states and 9239 transitions. Second operand has 26 states, 26 states have (on average 8.384615384615385) internal successors, (218), 20 states have internal predecessors, (218), 4 states have call successors, (53), 10 states have call predecessors, (53), 6 states have return successors, (48), 5 states have call predecessors, (48), 4 states have call successors, (48) [2023-11-22 18:13:48,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:13:48,502 INFO L93 Difference]: Finished difference Result 14177 states and 20061 transitions. [2023-11-22 18:13:48,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-22 18:13:48,503 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.384615384615385) internal successors, (218), 20 states have internal predecessors, (218), 4 states have call successors, (53), 10 states have call predecessors, (53), 6 states have return successors, (48), 5 states have call predecessors, (48), 4 states have call successors, (48) Word has length 182 [2023-11-22 18:13:48,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:13:48,531 INFO L225 Difference]: With dead ends: 14177 [2023-11-22 18:13:48,531 INFO L226 Difference]: Without dead ends: 7552 [2023-11-22 18:13:48,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=178, Invalid=1082, Unknown=0, NotChecked=0, Total=1260 [2023-11-22 18:13:48,548 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 1957 mSDsluCounter, 4584 mSDsCounter, 0 mSdLazyCounter, 5675 mSolverCounterSat, 1294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2011 SdHoareTripleChecker+Valid, 4928 SdHoareTripleChecker+Invalid, 6969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1294 IncrementalHoareTripleChecker+Valid, 5675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-22 18:13:48,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2011 Valid, 4928 Invalid, 6969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1294 Valid, 5675 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-22 18:13:48,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7552 states. [2023-11-22 18:13:49,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7552 to 6670. [2023-11-22 18:13:49,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6670 states, 4571 states have (on average 1.3200612557427258) internal successors, (6034), 4675 states have internal predecessors, (6034), 1473 states have call successors, (1473), 546 states have call predecessors, (1473), 625 states have return successors, (1764), 1488 states have call predecessors, (1764), 1472 states have call successors, (1764) [2023-11-22 18:13:49,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6670 states to 6670 states and 9271 transitions. [2023-11-22 18:13:49,214 INFO L78 Accepts]: Start accepts. Automaton has 6670 states and 9271 transitions. Word has length 182 [2023-11-22 18:13:49,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:13:49,214 INFO L495 AbstractCegarLoop]: Abstraction has 6670 states and 9271 transitions. [2023-11-22 18:13:49,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.384615384615385) internal successors, (218), 20 states have internal predecessors, (218), 4 states have call successors, (53), 10 states have call predecessors, (53), 6 states have return successors, (48), 5 states have call predecessors, (48), 4 states have call successors, (48) [2023-11-22 18:13:49,215 INFO L276 IsEmpty]: Start isEmpty. Operand 6670 states and 9271 transitions. [2023-11-22 18:13:49,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-22 18:13:49,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:13:49,227 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:13:49,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-22 18:13:49,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:13:49,440 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:13:49,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:13:49,441 INFO L85 PathProgramCache]: Analyzing trace with hash -149482137, now seen corresponding path program 1 times [2023-11-22 18:13:49,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:13:49,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583539553] [2023-11-22 18:13:49,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:13:49,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:13:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:49,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:13:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:49,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:13:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:49,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:13:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:49,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-22 18:13:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:49,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-22 18:13:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:49,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:49,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:13:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:49,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:49,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 18:13:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:49,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-22 18:13:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:49,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:49,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-22 18:13:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:49,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:49,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-22 18:13:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:49,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-22 18:13:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:49,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-22 18:13:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:49,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-22 18:13:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:49,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:13:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:49,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:49,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:13:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:49,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-22 18:13:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:50,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-11-22 18:13:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:50,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-22 18:13:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:50,015 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-22 18:13:50,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:13:50,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583539553] [2023-11-22 18:13:50,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583539553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:13:50,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:13:50,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-22 18:13:50,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034019427] [2023-11-22 18:13:50,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:13:50,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 18:13:50,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:13:50,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 18:13:50,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:13:50,021 INFO L87 Difference]: Start difference. First operand 6670 states and 9271 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (20), 7 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-22 18:13:52,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:13:52,298 INFO L93 Difference]: Finished difference Result 14233 states and 20157 transitions. [2023-11-22 18:13:52,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 18:13:52,299 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (20), 7 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 190 [2023-11-22 18:13:52,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:13:52,322 INFO L225 Difference]: With dead ends: 14233 [2023-11-22 18:13:52,322 INFO L226 Difference]: Without dead ends: 7576 [2023-11-22 18:13:52,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-11-22 18:13:52,338 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 775 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 1489 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 2153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 1489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-22 18:13:52,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 1846 Invalid, 2153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 1489 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-22 18:13:52,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7576 states. [2023-11-22 18:13:52,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7576 to 6694. [2023-11-22 18:13:52,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6694 states, 4587 states have (on average 1.3224329627207325) internal successors, (6066), 4699 states have internal predecessors, (6066), 1473 states have call successors, (1473), 546 states have call predecessors, (1473), 633 states have return successors, (1784), 1488 states have call predecessors, (1784), 1472 states have call successors, (1784) [2023-11-22 18:13:52,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6694 states to 6694 states and 9323 transitions. [2023-11-22 18:13:52,995 INFO L78 Accepts]: Start accepts. Automaton has 6694 states and 9323 transitions. Word has length 190 [2023-11-22 18:13:52,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:13:52,998 INFO L495 AbstractCegarLoop]: Abstraction has 6694 states and 9323 transitions. [2023-11-22 18:13:52,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (20), 7 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-22 18:13:52,999 INFO L276 IsEmpty]: Start isEmpty. Operand 6694 states and 9323 transitions. [2023-11-22 18:13:53,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-22 18:13:53,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:13:53,010 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:13:53,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-22 18:13:53,010 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:13:53,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:13:53,010 INFO L85 PathProgramCache]: Analyzing trace with hash -969087270, now seen corresponding path program 1 times [2023-11-22 18:13:53,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:13:53,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432757409] [2023-11-22 18:13:53,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:13:53,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:13:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:53,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:13:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:53,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:13:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:53,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:13:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:53,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-22 18:13:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:53,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-22 18:13:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:53,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:53,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:13:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:53,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:53,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 18:13:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:53,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-22 18:13:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:53,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:53,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-22 18:13:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:53,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:53,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:53,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-22 18:13:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:53,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-22 18:13:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:53,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-22 18:13:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:53,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-22 18:13:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:53,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:13:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:53,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:53,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:13:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:53,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 18:13:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:53,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-11-22 18:13:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:53,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 18:13:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:53,850 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-22 18:13:53,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:13:53,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432757409] [2023-11-22 18:13:53,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432757409] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:13:53,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607838767] [2023-11-22 18:13:53,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:13:53,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:13:53,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:13:53,852 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:13:53,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-22 18:13:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:54,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 2338 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 18:13:54,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:13:54,619 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-11-22 18:13:54,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:13:54,697 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-22 18:13:54,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607838767] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 18:13:54,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 18:13:54,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11, 5] total 12 [2023-11-22 18:13:54,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074616454] [2023-11-22 18:13:54,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:13:54,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:13:54,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:13:54,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:13:54,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-22 18:13:54,699 INFO L87 Difference]: Start difference. First operand 6694 states and 9323 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-22 18:13:55,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:13:55,402 INFO L93 Difference]: Finished difference Result 13431 states and 19085 transitions. [2023-11-22 18:13:55,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 18:13:55,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 191 [2023-11-22 18:13:55,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:13:55,421 INFO L225 Difference]: With dead ends: 13431 [2023-11-22 18:13:55,421 INFO L226 Difference]: Without dead ends: 6750 [2023-11-22 18:13:55,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 419 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-22 18:13:55,437 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 1 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:13:55,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1106 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 18:13:55,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6750 states. [2023-11-22 18:13:56,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6750 to 6718. [2023-11-22 18:13:56,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6718 states, 4611 states have (on average 1.322489698546953) internal successors, (6098), 4723 states have internal predecessors, (6098), 1473 states have call successors, (1473), 546 states have call predecessors, (1473), 633 states have return successors, (1784), 1488 states have call predecessors, (1784), 1472 states have call successors, (1784) [2023-11-22 18:13:56,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6718 states to 6718 states and 9355 transitions. [2023-11-22 18:13:56,067 INFO L78 Accepts]: Start accepts. Automaton has 6718 states and 9355 transitions. Word has length 191 [2023-11-22 18:13:56,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:13:56,067 INFO L495 AbstractCegarLoop]: Abstraction has 6718 states and 9355 transitions. [2023-11-22 18:13:56,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-22 18:13:56,067 INFO L276 IsEmpty]: Start isEmpty. Operand 6718 states and 9355 transitions. [2023-11-22 18:13:56,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-22 18:13:56,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:13:56,075 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:13:56,096 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 18:13:56,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:13:56,293 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:13:56,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:13:56,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1758179909, now seen corresponding path program 1 times [2023-11-22 18:13:56,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:13:56,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368827670] [2023-11-22 18:13:56,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:13:56,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:13:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:56,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:13:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:56,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:13:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:56,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:13:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:56,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-22 18:13:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:56,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-22 18:13:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:56,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:56,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:13:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:56,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:56,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 18:13:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:56,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-22 18:13:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:56,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:56,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-22 18:13:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:56,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:56,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-22 18:13:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:56,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-22 18:13:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:56,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-22 18:13:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:56,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-22 18:13:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:56,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:13:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:56,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:13:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:56,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:13:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:56,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 18:13:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:56,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-11-22 18:13:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:56,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 18:13:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-11-22 18:13:57,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:13:57,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368827670] [2023-11-22 18:13:57,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368827670] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:13:57,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959548074] [2023-11-22 18:13:57,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:13:57,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:13:57,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:13:57,005 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:13:57,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-22 18:13:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:13:57,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 2357 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-22 18:13:57,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:13:58,009 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-11-22 18:13:58,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:13:58,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959548074] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:13:58,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:13:58,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 20 [2023-11-22 18:13:58,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521750514] [2023-11-22 18:13:58,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:13:58,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-22 18:13:58,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:13:58,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-22 18:13:58,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2023-11-22 18:13:58,011 INFO L87 Difference]: Start difference. First operand 6718 states and 9355 transitions. Second operand has 11 states, 10 states have (on average 10.1) internal successors, (101), 9 states have internal predecessors, (101), 5 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) [2023-11-22 18:14:00,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:14:00,296 INFO L93 Difference]: Finished difference Result 16355 states and 22777 transitions. [2023-11-22 18:14:00,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-22 18:14:00,297 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.1) internal successors, (101), 9 states have internal predecessors, (101), 5 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) Word has length 192 [2023-11-22 18:14:00,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:14:00,315 INFO L225 Difference]: With dead ends: 16355 [2023-11-22 18:14:00,315 INFO L226 Difference]: Without dead ends: 9648 [2023-11-22 18:14:00,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2023-11-22 18:14:00,327 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 1562 mSDsluCounter, 3509 mSDsCounter, 0 mSdLazyCounter, 1725 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 4060 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:14:00,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 4060 Invalid, 1927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1725 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-22 18:14:00,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9648 states. [2023-11-22 18:14:01,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9648 to 9616. [2023-11-22 18:14:01,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9616 states, 6647 states have (on average 1.3242064089062735) internal successors, (8802), 6787 states have internal predecessors, (8802), 2067 states have call successors, (2067), 806 states have call predecessors, (2067), 901 states have return successors, (2406), 2078 states have call predecessors, (2406), 2066 states have call successors, (2406) [2023-11-22 18:14:01,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9616 states to 9616 states and 13275 transitions. [2023-11-22 18:14:01,081 INFO L78 Accepts]: Start accepts. Automaton has 9616 states and 13275 transitions. Word has length 192 [2023-11-22 18:14:01,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:14:01,082 INFO L495 AbstractCegarLoop]: Abstraction has 9616 states and 13275 transitions. [2023-11-22 18:14:01,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.1) internal successors, (101), 9 states have internal predecessors, (101), 5 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) [2023-11-22 18:14:01,082 INFO L276 IsEmpty]: Start isEmpty. Operand 9616 states and 13275 transitions. [2023-11-22 18:14:01,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-11-22 18:14:01,090 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:14:01,090 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:14:01,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-22 18:14:01,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:14:01,290 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:14:01,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:14:01,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1271789880, now seen corresponding path program 1 times [2023-11-22 18:14:01,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:14:01,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061052924] [2023-11-22 18:14:01,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:14:01,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:14:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:01,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:14:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:01,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:14:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:01,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:14:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:01,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-22 18:14:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:01,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-22 18:14:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:01,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:14:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:01,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:14:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:01,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:14:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:01,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 18:14:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:01,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-22 18:14:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:01,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:14:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:01,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-22 18:14:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:01,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:14:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:01,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-22 18:14:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:01,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-22 18:14:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:01,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-22 18:14:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:02,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-22 18:14:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:02,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:14:02,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:02,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:14:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:02,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:14:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:02,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-11-22 18:14:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:02,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:14:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:02,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:14:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:02,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-22 18:14:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:02,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2023-11-22 18:14:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:02,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2023-11-22 18:14:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:02,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-11-22 18:14:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:02,082 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2023-11-22 18:14:02,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:14:02,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061052924] [2023-11-22 18:14:02,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061052924] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:14:02,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456513287] [2023-11-22 18:14:02,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:14:02,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:14:02,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:14:02,084 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:14:02,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-22 18:14:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:02,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 2467 conjuncts, 60 conjunts are in the unsatisfiable core [2023-11-22 18:14:02,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:14:03,123 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 25 proven. 8 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-11-22 18:14:03,123 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:14:03,508 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2023-11-22 18:14:03,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456513287] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 18:14:03,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 18:14:03,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12, 12] total 26 [2023-11-22 18:14:03,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786985508] [2023-11-22 18:14:03,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:14:03,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 18:14:03,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:14:03,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 18:14:03,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2023-11-22 18:14:03,511 INFO L87 Difference]: Start difference. First operand 9616 states and 13275 transitions. Second operand has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-22 18:14:06,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:14:06,432 INFO L93 Difference]: Finished difference Result 25451 states and 35181 transitions. [2023-11-22 18:14:06,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 18:14:06,434 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 216 [2023-11-22 18:14:06,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:14:06,469 INFO L225 Difference]: With dead ends: 25451 [2023-11-22 18:14:06,469 INFO L226 Difference]: Without dead ends: 15846 [2023-11-22 18:14:06,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2023-11-22 18:14:06,487 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 1623 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1664 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-22 18:14:06,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1664 Valid, 1782 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [555 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-22 18:14:06,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15846 states. [2023-11-22 18:14:07,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15846 to 12798. [2023-11-22 18:14:07,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12798 states, 8851 states have (on average 1.3248220540051971) internal successors, (11726), 9035 states have internal predecessors, (11726), 2765 states have call successors, (2765), 1078 states have call predecessors, (2765), 1181 states have return successors, (3148), 2760 states have call predecessors, (3148), 2764 states have call successors, (3148) [2023-11-22 18:14:07,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12798 states to 12798 states and 17639 transitions. [2023-11-22 18:14:07,838 INFO L78 Accepts]: Start accepts. Automaton has 12798 states and 17639 transitions. Word has length 216 [2023-11-22 18:14:07,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:14:07,838 INFO L495 AbstractCegarLoop]: Abstraction has 12798 states and 17639 transitions. [2023-11-22 18:14:07,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-22 18:14:07,839 INFO L276 IsEmpty]: Start isEmpty. Operand 12798 states and 17639 transitions. [2023-11-22 18:14:07,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-11-22 18:14:07,847 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:14:07,847 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:14:07,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-22 18:14:08,047 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,SelfDestructingSolverStorable21 [2023-11-22 18:14:08,048 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:14:08,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:14:08,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1617030946, now seen corresponding path program 1 times [2023-11-22 18:14:08,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:14:08,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926304138] [2023-11-22 18:14:08,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:14:08,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:14:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:14:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:14:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:14:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-22 18:14:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-22 18:14:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:14:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:14:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:14:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 18:14:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-22 18:14:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:14:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-22 18:14:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:14:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-22 18:14:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-22 18:14:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-22 18:14:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-22 18:14:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:14:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:14:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:14:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-11-22 18:14:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:14:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:14:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-11-22 18:14:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:14:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-11-22 18:14:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:14:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-11-22 18:14:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-11-22 18:14:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-22 18:14:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:08,454 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-11-22 18:14:08,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:14:08,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926304138] [2023-11-22 18:14:08,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926304138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:14:08,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:14:08,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-22 18:14:08,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371301118] [2023-11-22 18:14:08,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:14:08,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 18:14:08,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:14:08,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 18:14:08,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-22 18:14:08,456 INFO L87 Difference]: Start difference. First operand 12798 states and 17639 transitions. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-22 18:14:12,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:14:12,082 INFO L93 Difference]: Finished difference Result 31140 states and 44310 transitions. [2023-11-22 18:14:12,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 18:14:12,083 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 230 [2023-11-22 18:14:12,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:14:12,149 INFO L225 Difference]: With dead ends: 31140 [2023-11-22 18:14:12,149 INFO L226 Difference]: Without dead ends: 18355 [2023-11-22 18:14:12,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-22 18:14:12,182 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 795 mSDsluCounter, 2778 mSDsCounter, 0 mSdLazyCounter, 2098 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 3448 SdHoareTripleChecker+Invalid, 2600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 2098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:14:12,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 3448 Invalid, 2600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 2098 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-22 18:14:12,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18355 states. [2023-11-22 18:14:13,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18355 to 12782. [2023-11-22 18:14:13,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12782 states, 8843 states have (on average 1.3242112405292321) internal successors, (11710), 9027 states have internal predecessors, (11710), 2757 states have call successors, (2757), 1078 states have call predecessors, (2757), 1181 states have return successors, (3140), 2752 states have call predecessors, (3140), 2756 states have call successors, (3140) [2023-11-22 18:14:13,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12782 states to 12782 states and 17607 transitions. [2023-11-22 18:14:13,761 INFO L78 Accepts]: Start accepts. Automaton has 12782 states and 17607 transitions. Word has length 230 [2023-11-22 18:14:13,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:14:13,762 INFO L495 AbstractCegarLoop]: Abstraction has 12782 states and 17607 transitions. [2023-11-22 18:14:13,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-22 18:14:13,762 INFO L276 IsEmpty]: Start isEmpty. Operand 12782 states and 17607 transitions. [2023-11-22 18:14:13,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-11-22 18:14:13,771 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:14:13,771 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:14:13,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-22 18:14:13,771 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:14:13,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:14:13,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1994348376, now seen corresponding path program 1 times [2023-11-22 18:14:13,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:14:13,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492991310] [2023-11-22 18:14:13,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:14:13,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:14:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:14:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:14:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:14:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-22 18:14:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-22 18:14:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:14:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:14:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:14:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 18:14:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-22 18:14:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:14:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-22 18:14:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:14:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-22 18:14:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-22 18:14:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-22 18:14:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-22 18:14:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:14:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:14:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:14:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-11-22 18:14:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:14:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:14:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-11-22 18:14:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:14:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-11-22 18:14:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:14:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-11-22 18:14:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-11-22 18:14:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-11-22 18:14:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-11-22 18:14:14,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:14:14,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492991310] [2023-11-22 18:14:14,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492991310] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:14:14,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120796548] [2023-11-22 18:14:14,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:14:14,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:14:14,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:14:14,330 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:14:14,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-22 18:14:15,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:15,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 2685 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:14:15,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:14:15,366 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-11-22 18:14:15,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:14:15,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120796548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:14:15,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:14:15,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 10 [2023-11-22 18:14:15,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130673662] [2023-11-22 18:14:15,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:14:15,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:14:15,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:14:15,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:14:15,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:14:15,368 INFO L87 Difference]: Start difference. First operand 12782 states and 17607 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-22 18:14:19,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:14:19,113 INFO L93 Difference]: Finished difference Result 38325 states and 52791 transitions. [2023-11-22 18:14:19,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 18:14:19,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 231 [2023-11-22 18:14:19,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:14:19,195 INFO L225 Difference]: With dead ends: 38325 [2023-11-22 18:14:19,196 INFO L226 Difference]: Without dead ends: 38320 [2023-11-22 18:14:19,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:14:19,207 INFO L413 NwaCegarLoop]: 1097 mSDtfsCounter, 1115 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 18:14:19,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 1982 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 18:14:19,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38320 states. [2023-11-22 18:14:22,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38320 to 31946. [2023-11-22 18:14:22,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31946 states, 22109 states have (on average 1.3241213985254874) internal successors, (29275), 22571 states have internal predecessors, (29275), 6885 states have call successors, (6885), 2692 states have call predecessors, (6885), 2951 states have return successors, (7844), 6872 states have call predecessors, (7844), 6884 states have call successors, (7844) [2023-11-22 18:14:22,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31946 states to 31946 states and 44004 transitions. [2023-11-22 18:14:22,677 INFO L78 Accepts]: Start accepts. Automaton has 31946 states and 44004 transitions. Word has length 231 [2023-11-22 18:14:22,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:14:22,678 INFO L495 AbstractCegarLoop]: Abstraction has 31946 states and 44004 transitions. [2023-11-22 18:14:22,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-22 18:14:22,678 INFO L276 IsEmpty]: Start isEmpty. Operand 31946 states and 44004 transitions. [2023-11-22 18:14:22,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-11-22 18:14:22,709 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:14:22,710 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:14:22,732 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 18:14:22,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-22 18:14:22,929 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:14:22,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:14:22,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1293283798, now seen corresponding path program 1 times [2023-11-22 18:14:22,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:14:22,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454935391] [2023-11-22 18:14:22,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:14:22,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:14:23,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:14:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:14:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:14:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-22 18:14:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-22 18:14:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:14:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:14:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:14:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 18:14:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-22 18:14:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:14:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-22 18:14:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:14:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-22 18:14:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-22 18:14:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-22 18:14:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-22 18:14:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:14:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:14:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:14:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-11-22 18:14:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:14:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:14:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-11-22 18:14:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:14:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-11-22 18:14:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:14:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-11-22 18:14:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-11-22 18:14:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-11-22 18:14:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-11-22 18:14:23,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:14:23,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454935391] [2023-11-22 18:14:23,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454935391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:14:23,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:14:23,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-22 18:14:23,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107274127] [2023-11-22 18:14:23,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:14:23,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 18:14:23,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:14:23,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 18:14:23,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-22 18:14:23,387 INFO L87 Difference]: Start difference. First operand 31946 states and 44004 transitions. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-22 18:14:33,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:14:33,751 INFO L93 Difference]: Finished difference Result 100879 states and 146483 transitions. [2023-11-22 18:14:33,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-22 18:14:33,752 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 231 [2023-11-22 18:14:33,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:14:34,077 INFO L225 Difference]: With dead ends: 100879 [2023-11-22 18:14:34,078 INFO L226 Difference]: Without dead ends: 68946 [2023-11-22 18:14:34,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2023-11-22 18:14:34,132 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 2452 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 1727 mSolverCounterSat, 1693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2540 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 3420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1693 IncrementalHoareTripleChecker+Valid, 1727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-22 18:14:34,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2540 Valid, 2552 Invalid, 3420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1693 Valid, 1727 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-22 18:14:34,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68946 states. [2023-11-22 18:14:38,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68946 to 32718. [2023-11-22 18:14:38,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32718 states, 22601 states have (on average 1.3206052829520818) internal successors, (29847), 23067 states have internal predecessors, (29847), 6965 states have call successors, (6965), 2692 states have call predecessors, (6965), 3151 states have return successors, (8444), 7148 states have call predecessors, (8444), 6964 states have call successors, (8444) [2023-11-22 18:14:38,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32718 states to 32718 states and 45256 transitions. [2023-11-22 18:14:38,992 INFO L78 Accepts]: Start accepts. Automaton has 32718 states and 45256 transitions. Word has length 231 [2023-11-22 18:14:38,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:14:38,993 INFO L495 AbstractCegarLoop]: Abstraction has 32718 states and 45256 transitions. [2023-11-22 18:14:38,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-22 18:14:38,993 INFO L276 IsEmpty]: Start isEmpty. Operand 32718 states and 45256 transitions. [2023-11-22 18:14:39,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-11-22 18:14:39,032 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:14:39,032 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:14:39,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-22 18:14:39,033 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:14:39,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:14:39,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1261004282, now seen corresponding path program 1 times [2023-11-22 18:14:39,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:14:39,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853941983] [2023-11-22 18:14:39,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:14:39,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:14:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:14:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:14:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:14:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-22 18:14:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-22 18:14:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:14:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:14:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:14:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 18:14:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-22 18:14:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:14:39,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-22 18:14:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:14:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-22 18:14:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-22 18:14:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-22 18:14:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-22 18:14:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:14:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:14:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:14:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-11-22 18:14:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:14:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 18:14:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-11-22 18:14:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:14:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-11-22 18:14:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-11-22 18:14:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-11-22 18:14:39,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2023-11-22 18:14:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2023-11-22 18:14:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:39,916 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2023-11-22 18:14:39,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:14:39,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853941983] [2023-11-22 18:14:39,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853941983] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:14:39,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354393687] [2023-11-22 18:14:39,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:14:39,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:14:39,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:14:39,920 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:14:39,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-22 18:14:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:14:40,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 2564 conjuncts, 68 conjunts are in the unsatisfiable core [2023-11-22 18:14:40,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:14:41,215 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 47 proven. 13 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2023-11-22 18:14:41,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:14:41,760 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-11-22 18:14:41,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354393687] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:14:41,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:14:41,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 11] total 34 [2023-11-22 18:14:41,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870756519] [2023-11-22 18:14:41,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:14:41,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-22 18:14:41,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:14:41,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-22 18:14:41,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1005, Unknown=0, NotChecked=0, Total=1122 [2023-11-22 18:14:41,763 INFO L87 Difference]: Start difference. First operand 32718 states and 45256 transitions. Second operand has 34 states, 30 states have (on average 7.3) internal successors, (219), 25 states have internal predecessors, (219), 13 states have call successors, (56), 13 states have call predecessors, (56), 11 states have return successors, (47), 13 states have call predecessors, (47), 13 states have call successors, (47) [2023-11-22 18:14:58,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:14:58,356 INFO L93 Difference]: Finished difference Result 89383 states and 126650 transitions. [2023-11-22 18:14:58,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-22 18:14:58,357 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 7.3) internal successors, (219), 25 states have internal predecessors, (219), 13 states have call successors, (56), 13 states have call predecessors, (56), 11 states have return successors, (47), 13 states have call predecessors, (47), 13 states have call successors, (47) Word has length 234 [2023-11-22 18:14:58,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:14:58,541 INFO L225 Difference]: With dead ends: 89383 [2023-11-22 18:14:58,542 INFO L226 Difference]: Without dead ends: 56676 [2023-11-22 18:14:58,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1452 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1066, Invalid=5576, Unknown=0, NotChecked=0, Total=6642 [2023-11-22 18:14:58,604 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 7411 mSDsluCounter, 5835 mSDsCounter, 0 mSdLazyCounter, 7323 mSolverCounterSat, 4960 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7513 SdHoareTripleChecker+Valid, 6178 SdHoareTripleChecker+Invalid, 12283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4960 IncrementalHoareTripleChecker+Valid, 7323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:14:58,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7513 Valid, 6178 Invalid, 12283 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4960 Valid, 7323 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-11-22 18:14:58,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56676 states.