./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c4f91361 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-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.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 1bad5b7f91b61cdf9d4f1ace01330b8d7c80f8ede0ca40c43d18f706f54101eb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-c4f9136-m [2023-11-23 15:05:47,722 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 15:05:47,785 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 15:05:47,789 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 15:05:47,789 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 15:05:47,811 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 15:05:47,812 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 15:05:47,812 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 15:05:47,813 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 15:05:47,816 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 15:05:47,817 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 15:05:47,817 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 15:05:47,818 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 15:05:47,819 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 15:05:47,819 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 15:05:47,819 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 15:05:47,820 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 15:05:47,820 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 15:05:47,820 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 15:05:47,820 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 15:05:47,820 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 15:05:47,821 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 15:05:47,821 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 15:05:47,821 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 15:05:47,822 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 15:05:47,822 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 15:05:47,822 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 15:05:47,822 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 15:05:47,823 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 15:05:47,823 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 15:05:47,824 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 15:05:47,824 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 15:05:47,824 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 15:05:47,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 15:05:47,825 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 15:05:47,825 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 15:05:47,825 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 15:05:47,825 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 15:05:47,825 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 15:05:47,825 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1bad5b7f91b61cdf9d4f1ace01330b8d7c80f8ede0ca40c43d18f706f54101eb [2023-11-23 15:05:48,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 15:05:48,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 15:05:48,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 15:05:48,022 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 15:05:48,023 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 15:05:48,024 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-11-23 15:05:49,077 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 15:05:49,427 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 15:05:49,427 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-11-23 15:05:49,449 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e55d67113/24763c03154748ed84de679637c33534/FLAG17a305688 [2023-11-23 15:05:49,463 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e55d67113/24763c03154748ed84de679637c33534 [2023-11-23 15:05:49,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 15:05:49,467 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 15:05:49,470 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 15:05:49,470 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 15:05:49,474 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 15:05:49,474 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:05:49" (1/1) ... [2023-11-23 15:05:49,475 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@185e42d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:49, skipping insertion in model container [2023-11-23 15:05:49,475 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:05:49" (1/1) ... [2023-11-23 15:05:49,541 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 15:05:50,157 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-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i[144238,144251] [2023-11-23 15:05:50,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 15:05:50,187 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 15:05:50,386 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-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i[144238,144251] [2023-11-23 15:05:50,389 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 15:05:50,414 INFO L206 MainTranslator]: Completed translation [2023-11-23 15:05:50,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:50 WrapperNode [2023-11-23 15:05:50,415 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 15:05:50,416 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 15:05:50,416 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 15:05:50,416 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 15:05:50,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:50" (1/1) ... [2023-11-23 15:05:50,468 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:50" (1/1) ... [2023-11-23 15:05:50,543 INFO L138 Inliner]: procedures = 115, calls = 823, calls flagged for inlining = 54, calls inlined = 53, statements flattened = 2155 [2023-11-23 15:05:50,544 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 15:05:50,544 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 15:05:50,544 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 15:05:50,544 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 15:05:50,553 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:50" (1/1) ... [2023-11-23 15:05:50,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:50" (1/1) ... [2023-11-23 15:05:50,572 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:50" (1/1) ... [2023-11-23 15:05:50,770 INFO L175 MemorySlicer]: Split 484 memory accesses to 8 slices as follows [2, 4, 64, 0, 19, 387, 0, 8]. 80 percent of accesses are in the largest equivalence class. The 189 initializations are split as follows [2, 4, 64, 0, 0, 111, 0, 8]. The 62 writes are split as follows [0, 0, 0, 0, 2, 60, 0, 0]. [2023-11-23 15:05:50,775 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:50" (1/1) ... [2023-11-23 15:05:50,775 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:50" (1/1) ... [2023-11-23 15:05:50,830 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:50" (1/1) ... [2023-11-23 15:05:50,847 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:50" (1/1) ... [2023-11-23 15:05:50,857 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:50" (1/1) ... [2023-11-23 15:05:50,868 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:50" (1/1) ... [2023-11-23 15:05:50,886 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 15:05:50,893 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 15:05:50,893 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 15:05:50,893 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 15:05:50,894 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:50" (1/1) ... [2023-11-23 15:05:50,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 15:05:50,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:05:50,927 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) [2023-11-23 15:05:50,947 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 [2023-11-23 15:05:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2023-11-23 15:05:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2023-11-23 15:05:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2023-11-23 15:05:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2023-11-23 15:05:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2023-11-23 15:05:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2023-11-23 15:05:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2023-11-23 15:05:50,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2023-11-23 15:05:50,972 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-23 15:05:50,972 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-23 15:05:50,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2023-11-23 15:05:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2023-11-23 15:05:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2023-11-23 15:05:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2023-11-23 15:05:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2023-11-23 15:05:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2023-11-23 15:05:50,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#6 [2023-11-23 15:05:50,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#7 [2023-11-23 15:05:50,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2023-11-23 15:05:50,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2023-11-23 15:05:50,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2023-11-23 15:05:50,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2023-11-23 15:05:50,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2023-11-23 15:05:50,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2023-11-23 15:05:51,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2023-11-23 15:05:51,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2023-11-23 15:05:51,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 15:05:51,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 15:05:51,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 15:05:51,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 15:05:51,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 15:05:51,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 15:05:51,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 15:05:51,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 15:05:51,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 15:05:51,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-23 15:05:51,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 15:05:51,008 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 15:05:51,008 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2023-11-23 15:05:51,008 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2023-11-23 15:05:51,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#0 [2023-11-23 15:05:51,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#1 [2023-11-23 15:05:51,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#2 [2023-11-23 15:05:51,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#3 [2023-11-23 15:05:51,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#4 [2023-11-23 15:05:51,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#5 [2023-11-23 15:05:51,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#6 [2023-11-23 15:05:51,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#7 [2023-11-23 15:05:51,009 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#0 [2023-11-23 15:05:51,009 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#1 [2023-11-23 15:05:51,010 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#2 [2023-11-23 15:05:51,010 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#3 [2023-11-23 15:05:51,010 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#4 [2023-11-23 15:05:51,010 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#5 [2023-11-23 15:05:51,010 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#6 [2023-11-23 15:05:51,010 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#7 [2023-11-23 15:05:51,010 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-23 15:05:51,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-23 15:05:51,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 15:05:51,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 15:05:51,011 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-23 15:05:51,011 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-23 15:05:51,011 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 15:05:51,011 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 15:05:51,011 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2023-11-23 15:05:51,012 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2023-11-23 15:05:51,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 15:05:51,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 15:05:51,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 15:05:51,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 15:05:51,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 15:05:51,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 15:05:51,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 15:05:51,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-23 15:05:51,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_tty [2023-11-23 15:05:51,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_tty [2023-11-23 15:05:51,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 15:05:51,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 15:05:51,015 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 15:05:51,015 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 15:05:51,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_1 [2023-11-23 15:05:51,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_1 [2023-11-23 15:05:51,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 15:05:51,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-23 15:05:51,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-23 15:05:51,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 15:05:51,016 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_tiocmset [2023-11-23 15:05:51,016 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_tiocmset [2023-11-23 15:05:51,016 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_tiocmget [2023-11-23 15:05:51,016 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_tiocmget [2023-11-23 15:05:51,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 15:05:51,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 15:05:51,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 15:05:51,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 15:05:51,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 15:05:51,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 15:05:51,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 15:05:51,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 15:05:51,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-23 15:05:51,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 15:05:51,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 15:05:51,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 15:05:51,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 15:05:51,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 15:05:51,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 15:05:51,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 15:05:51,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-23 15:05:51,018 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_ioctl [2023-11-23 15:05:51,019 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_ioctl [2023-11-23 15:05:51,019 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-11-23 15:05:51,019 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-11-23 15:05:51,019 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-23 15:05:51,019 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-23 15:05:51,020 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_write_room [2023-11-23 15:05:51,020 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_write_room [2023-11-23 15:05:51,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 15:05:51,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 15:05:51,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 15:05:51,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 15:05:51,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 15:05:51,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 15:05:51,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 15:05:51,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 15:05:51,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-23 15:05:51,021 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 15:05:51,022 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 15:05:51,022 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_init_termios [2023-11-23 15:05:51,022 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_init_termios [2023-11-23 15:05:51,022 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2023-11-23 15:05:51,022 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2023-11-23 15:05:51,022 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-23 15:05:51,022 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-23 15:05:51,022 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-23 15:05:51,023 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-23 15:05:51,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 15:05:51,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 15:05:51,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 15:05:51,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 15:05:51,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 15:05:51,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 15:05:51,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 15:05:51,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-23 15:05:51,024 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_set_termios [2023-11-23 15:05:51,025 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_set_termios [2023-11-23 15:05:51,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2023-11-23 15:05:51,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2023-11-23 15:05:51,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2023-11-23 15:05:51,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2023-11-23 15:05:51,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2023-11-23 15:05:51,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2023-11-23 15:05:51,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#6 [2023-11-23 15:05:51,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#7 [2023-11-23 15:05:51,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 15:05:51,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 15:05:51,383 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 15:05:51,386 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 15:05:51,438 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 15:05:54,679 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 15:05:54,777 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 15:05:54,778 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 15:05:54,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:05:54 BoogieIcfgContainer [2023-11-23 15:05:54,778 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 15:05:54,780 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 15:05:54,780 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 15:05:54,782 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 15:05:54,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:05:49" (1/3) ... [2023-11-23 15:05:54,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d6c3139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:05:54, skipping insertion in model container [2023-11-23 15:05:54,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:50" (2/3) ... [2023-11-23 15:05:54,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d6c3139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:05:54, skipping insertion in model container [2023-11-23 15:05:54,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:05:54" (3/3) ... [2023-11-23 15:05:54,784 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-11-23 15:05:54,797 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 15:05:54,797 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 15:05:54,838 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 15:05:54,843 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;@258a1d6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 15:05:54,844 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 15:05:54,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 647 states, 470 states have (on average 1.4936170212765958) internal successors, (702), 477 states have internal predecessors, (702), 149 states have call successors, (149), 27 states have call predecessors, (149), 26 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2023-11-23 15:05:54,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-23 15:05:54,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:05:54,863 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:05:54,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_ttyErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_ttyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:05:54,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:05:54,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1850725814, now seen corresponding path program 1 times [2023-11-23 15:05:54,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:05:54,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536479732] [2023-11-23 15:05:54,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:05:54,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:05:55,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:05:55,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:05:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:05:55,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:05:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:05:55,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:05:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:05:55,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 15:05:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:05:55,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 15:05:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:05:55,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 15:05:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:05:55,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:05:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:05:55,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:05:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:05:55,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 15:05:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:05:55,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:05:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:05:55,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:05:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:05:55,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 15:05:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:05:55,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 15:05:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:05:55,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 15:05:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:05:55,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 15:05:55,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:05:55,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 15:05:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:05:55,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 15:05:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:05:55,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 15:05:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:05:55,421 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-23 15:05:55,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:05:55,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536479732] [2023-11-23 15:05:55,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536479732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:05:55,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:05:55,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 15:05:55,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525962265] [2023-11-23 15:05:55,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:05:55,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 15:05:55,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:05:55,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 15:05:55,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:05:55,449 INFO L87 Difference]: Start difference. First operand has 647 states, 470 states have (on average 1.4936170212765958) internal successors, (702), 477 states have internal predecessors, (702), 149 states have call successors, (149), 27 states have call predecessors, (149), 26 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 15:05:58,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:00,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:01,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:04,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:05,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:06:05,472 INFO L93 Difference]: Finished difference Result 1509 states and 2421 transitions. [2023-11-23 15:06:05,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 15:06:05,475 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 108 [2023-11-23 15:06:05,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:06:05,503 INFO L225 Difference]: With dead ends: 1509 [2023-11-23 15:06:05,504 INFO L226 Difference]: Without dead ends: 846 [2023-11-23 15:06:05,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2023-11-23 15:06:05,519 INFO L413 NwaCegarLoop]: 639 mSDtfsCounter, 1002 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 2100 mSolverCounterSat, 606 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 2708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 2100 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-11-23 15:06:05,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 2219 Invalid, 2708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [606 Valid, 2100 Invalid, 2 Unknown, 0 Unchecked, 9.7s Time] [2023-11-23 15:06:05,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2023-11-23 15:06:05,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 692. [2023-11-23 15:06:05,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 510 states have (on average 1.4431372549019608) internal successors, (736), 512 states have internal predecessors, (736), 149 states have call successors, (149), 32 states have call predecessors, (149), 32 states have return successors, (149), 149 states have call predecessors, (149), 149 states have call successors, (149) [2023-11-23 15:06:05,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1034 transitions. [2023-11-23 15:06:05,633 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1034 transitions. Word has length 108 [2023-11-23 15:06:05,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:06:05,634 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 1034 transitions. [2023-11-23 15:06:05,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 15:06:05,635 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1034 transitions. [2023-11-23 15:06:05,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-23 15:06:05,643 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:06:05,643 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 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] [2023-11-23 15:06:05,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 15:06:05,644 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_ttyErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_ttyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:06:05,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:06:05,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1675403273, now seen corresponding path program 1 times [2023-11-23 15:06:05,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:06:05,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939249999] [2023-11-23 15:06:05,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:06:05,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:06:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:06:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:06:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:06:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 15:06:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 15:06:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 15:06:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:06:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:06:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 15:06:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:06:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:06:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 15:06:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 15:06:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 15:06:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 15:06:06,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 15:06:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 15:06:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 15:06:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:06:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:06:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-23 15:06:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-23 15:06:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:06:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:06:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-23 15:06:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:06:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:06:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-23 15:06:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:06,236 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2023-11-23 15:06:06,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:06:06,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939249999] [2023-11-23 15:06:06,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939249999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:06:06,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:06:06,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 15:06:06,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963258343] [2023-11-23 15:06:06,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:06:06,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 15:06:06,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:06:06,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 15:06:06,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:06:06,244 INFO L87 Difference]: Start difference. First operand 692 states and 1034 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-23 15:06:09,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:11,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:13,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:15,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:17,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:19,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:20,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:22,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:24,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:26,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:28,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:30,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:32,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:06:32,158 INFO L93 Difference]: Finished difference Result 1944 states and 2984 transitions. [2023-11-23 15:06:32,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 15:06:32,159 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 168 [2023-11-23 15:06:32,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:06:32,170 INFO L225 Difference]: With dead ends: 1944 [2023-11-23 15:06:32,171 INFO L226 Difference]: Without dead ends: 1286 [2023-11-23 15:06:32,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-11-23 15:06:32,173 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 2161 mSDsluCounter, 1608 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 1087 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2178 SdHoareTripleChecker+Valid, 2269 SdHoareTripleChecker+Invalid, 3400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1087 IncrementalHoareTripleChecker+Valid, 2305 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.7s IncrementalHoareTripleChecker+Time [2023-11-23 15:06:32,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2178 Valid, 2269 Invalid, 3400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1087 Valid, 2305 Invalid, 8 Unknown, 0 Unchecked, 25.7s Time] [2023-11-23 15:06:32,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2023-11-23 15:06:32,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 983. [2023-11-23 15:06:32,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 983 states, 744 states have (on average 1.4381720430107527) internal successors, (1070), 747 states have internal predecessors, (1070), 187 states have call successors, (187), 51 states have call predecessors, (187), 51 states have return successors, (187), 187 states have call predecessors, (187), 187 states have call successors, (187) [2023-11-23 15:06:32,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1444 transitions. [2023-11-23 15:06:32,227 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1444 transitions. Word has length 168 [2023-11-23 15:06:32,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:06:32,228 INFO L495 AbstractCegarLoop]: Abstraction has 983 states and 1444 transitions. [2023-11-23 15:06:32,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-23 15:06:32,229 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1444 transitions. [2023-11-23 15:06:32,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-23 15:06:32,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:06:32,231 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 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] [2023-11-23 15:06:32,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 15:06:32,232 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_ttyErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_ttyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:06:32,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:06:32,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1692290626, now seen corresponding path program 1 times [2023-11-23 15:06:32,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:06:32,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575682240] [2023-11-23 15:06:32,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:06:32,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:06:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:06:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:06:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:06:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 15:06:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 15:06:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 15:06:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:06:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:06:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 15:06:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:06:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:06:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 15:06:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 15:06:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 15:06:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 15:06:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 15:06:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 15:06:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 15:06:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:06:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:06:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-23 15:06:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-23 15:06:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:06:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:06:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-23 15:06:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:06:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:06:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-11-23 15:06:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:06:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:06:32,558 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-11-23 15:06:32,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:06:32,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575682240] [2023-11-23 15:06:32,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575682240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:06:32,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:06:32,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 15:06:32,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192102442] [2023-11-23 15:06:32,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:06:32,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 15:06:32,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:06:32,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 15:06:32,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:06:32,560 INFO L87 Difference]: Start difference. First operand 983 states and 1444 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 15:06:35,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:37,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:39,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:41,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:43,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:45,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:47,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:49,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:51,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:52,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:54,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:57,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:06:58,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:07:00,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:07:01,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:07:01,472 INFO L93 Difference]: Finished difference Result 2237 states and 3371 transitions. [2023-11-23 15:07:01,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 15:07:01,473 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 179 [2023-11-23 15:07:01,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:07:01,478 INFO L225 Difference]: With dead ends: 2237 [2023-11-23 15:07:01,478 INFO L226 Difference]: Without dead ends: 1288 [2023-11-23 15:07:01,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-23 15:07:01,482 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 1035 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 621 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 2213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 621 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.8s IncrementalHoareTripleChecker+Time [2023-11-23 15:07:01,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 2299 Invalid, 2213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [621 Valid, 1581 Invalid, 11 Unknown, 0 Unchecked, 28.8s Time] [2023-11-23 15:07:01,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2023-11-23 15:07:01,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 985. [2023-11-23 15:07:01,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 746 states have (on average 1.4369973190348526) internal successors, (1072), 749 states have internal predecessors, (1072), 187 states have call successors, (187), 51 states have call predecessors, (187), 51 states have return successors, (187), 187 states have call predecessors, (187), 187 states have call successors, (187) [2023-11-23 15:07:01,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1446 transitions. [2023-11-23 15:07:01,511 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1446 transitions. Word has length 179 [2023-11-23 15:07:01,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:07:01,512 INFO L495 AbstractCegarLoop]: Abstraction has 985 states and 1446 transitions. [2023-11-23 15:07:01,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 15:07:01,512 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1446 transitions. [2023-11-23 15:07:01,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-23 15:07:01,514 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:07:01,514 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 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] [2023-11-23 15:07:01,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 15:07:01,514 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_ttyErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_ttyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:07:01,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:07:01,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1635032324, now seen corresponding path program 1 times [2023-11-23 15:07:01,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:07:01,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811817117] [2023-11-23 15:07:01,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:07:01,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:07:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:01,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:07:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:01,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:07:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:01,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:07:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:01,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 15:07:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:01,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 15:07:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:01,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 15:07:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:01,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:07:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:01,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:07:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:01,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 15:07:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:01,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:07:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:01,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:07:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:01,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 15:07:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:01,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 15:07:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:01,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 15:07:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:01,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 15:07:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:01,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 15:07:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:01,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 15:07:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:01,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 15:07:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:01,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:07:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:01,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:07:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:01,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-23 15:07:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:01,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-23 15:07:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:01,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:07:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:01,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:07:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:01,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-23 15:07:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:01,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:07:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:01,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:07:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:02,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-11-23 15:07:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:02,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:07:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:02,018 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-11-23 15:07:02,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:07:02,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811817117] [2023-11-23 15:07:02,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811817117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:07:02,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:07:02,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 15:07:02,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650846939] [2023-11-23 15:07:02,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:07:02,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 15:07:02,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:07:02,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 15:07:02,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:07:02,020 INFO L87 Difference]: Start difference. First operand 985 states and 1446 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 15:07:04,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:07:06,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:07:08,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:07:10,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:07:12,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:07:14,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:07:16,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:07:18,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:07:18,265 INFO L93 Difference]: Finished difference Result 2525 states and 3854 transitions. [2023-11-23 15:07:18,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 15:07:18,265 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 179 [2023-11-23 15:07:18,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:07:18,274 INFO L225 Difference]: With dead ends: 2525 [2023-11-23 15:07:18,274 INFO L226 Difference]: Without dead ends: 2523 [2023-11-23 15:07:18,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2023-11-23 15:07:18,275 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 2478 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 2070 mSolverCounterSat, 1234 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2581 SdHoareTripleChecker+Valid, 2304 SdHoareTripleChecker+Invalid, 3307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1234 IncrementalHoareTripleChecker+Valid, 2070 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:07:18,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2581 Valid, 2304 Invalid, 3307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1234 Valid, 2070 Invalid, 3 Unknown, 0 Unchecked, 16.0s Time] [2023-11-23 15:07:18,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2523 states. [2023-11-23 15:07:18,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2523 to 1920. [2023-11-23 15:07:18,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1462 states have (on average 1.441860465116279) internal successors, (2108), 1469 states have internal predecessors, (2108), 357 states have call successors, (357), 100 states have call predecessors, (357), 100 states have return successors, (357), 356 states have call predecessors, (357), 357 states have call successors, (357) [2023-11-23 15:07:18,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2822 transitions. [2023-11-23 15:07:18,346 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2822 transitions. Word has length 179 [2023-11-23 15:07:18,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:07:18,347 INFO L495 AbstractCegarLoop]: Abstraction has 1920 states and 2822 transitions. [2023-11-23 15:07:18,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 15:07:18,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2822 transitions. [2023-11-23 15:07:18,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-11-23 15:07:18,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:07:18,350 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2023-11-23 15:07:18,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 15:07:18,350 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_ttyErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_ttyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:07:18,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:07:18,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1697746146, now seen corresponding path program 1 times [2023-11-23 15:07:18,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:07:18,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850375422] [2023-11-23 15:07:18,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:07:18,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:07:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:07:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:07:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:07:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 15:07:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 15:07:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 15:07:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:07:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:07:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 15:07:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:07:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:07:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 15:07:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 15:07:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 15:07:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 15:07:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 15:07:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 15:07:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 15:07:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:07:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:07:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-23 15:07:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-23 15:07:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:07:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:07:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-23 15:07:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:07:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:07:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-23 15:07:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:18,703 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-11-23 15:07:18,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:07:18,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850375422] [2023-11-23 15:07:18,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850375422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:07:18,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:07:18,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 15:07:18,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873328051] [2023-11-23 15:07:18,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:07:18,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 15:07:18,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:07:18,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 15:07:18,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:07:18,705 INFO L87 Difference]: Start difference. First operand 1920 states and 2822 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 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) [2023-11-23 15:07:21,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:07:23,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:07:25,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:07:27,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:07:29,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:07:31,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:07:33,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:07:35,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:07:37,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:07:39,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:07:41,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:07:43,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:07:45,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:07:46,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:07:48,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:07:50,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:07:50,074 INFO L93 Difference]: Finished difference Result 5290 states and 7994 transitions. [2023-11-23 15:07:50,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 15:07:50,075 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 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 186 [2023-11-23 15:07:50,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:07:50,089 INFO L225 Difference]: With dead ends: 5290 [2023-11-23 15:07:50,089 INFO L226 Difference]: Without dead ends: 3404 [2023-11-23 15:07:50,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-11-23 15:07:50,095 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 1522 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 2938 mSolverCounterSat, 665 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 2756 SdHoareTripleChecker+Invalid, 3615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 665 IncrementalHoareTripleChecker+Valid, 2938 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:07:50,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 2756 Invalid, 3615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [665 Valid, 2938 Invalid, 12 Unknown, 0 Unchecked, 31.1s Time] [2023-11-23 15:07:50,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3404 states. [2023-11-23 15:07:50,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3404 to 2504. [2023-11-23 15:07:50,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2504 states, 1932 states have (on average 1.4373706004140787) internal successors, (2777), 1941 states have internal predecessors, (2777), 433 states have call successors, (433), 138 states have call predecessors, (433), 138 states have return successors, (433), 432 states have call predecessors, (433), 433 states have call successors, (433) [2023-11-23 15:07:50,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2504 states to 2504 states and 3643 transitions. [2023-11-23 15:07:50,236 INFO L78 Accepts]: Start accepts. Automaton has 2504 states and 3643 transitions. Word has length 186 [2023-11-23 15:07:50,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:07:50,236 INFO L495 AbstractCegarLoop]: Abstraction has 2504 states and 3643 transitions. [2023-11-23 15:07:50,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 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) [2023-11-23 15:07:50,237 INFO L276 IsEmpty]: Start isEmpty. Operand 2504 states and 3643 transitions. [2023-11-23 15:07:50,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-23 15:07:50,240 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:07:50,240 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 3, 3, 3, 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] [2023-11-23 15:07:50,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 15:07:50,241 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_ttyErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_ttyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:07:50,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:07:50,241 INFO L85 PathProgramCache]: Analyzing trace with hash -569781356, now seen corresponding path program 1 times [2023-11-23 15:07:50,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:07:50,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815540367] [2023-11-23 15:07:50,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:07:50,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:07:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:07:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:07:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:07:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 15:07:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 15:07:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 15:07:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:07:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:07:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 15:07:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:07:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:07:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 15:07:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 15:07:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 15:07:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 15:07:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 15:07:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 15:07:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 15:07:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:07:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:07:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-23 15:07:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-23 15:07:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:07:50,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:07:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-23 15:07:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:07:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:07:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-11-23 15:07:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:07:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2023-11-23 15:07:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:07:50,550 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2023-11-23 15:07:50,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:07:50,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815540367] [2023-11-23 15:07:50,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815540367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:07:50,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:07:50,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 15:07:50,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299857072] [2023-11-23 15:07:50,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:07:50,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 15:07:50,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:07:50,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 15:07:50,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-23 15:07:50,552 INFO L87 Difference]: Start difference. First operand 2504 states and 3643 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 15:07:53,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:07:55,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:07:57,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:07:59,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:01,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:03,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:04,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:06,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:08,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:10,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:12,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:14,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:16,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:18,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:20,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:22,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:24,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:25,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:27,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:08:27,576 INFO L93 Difference]: Finished difference Result 7810 states and 11631 transitions. [2023-11-23 15:08:27,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 15:08:27,577 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 205 [2023-11-23 15:08:27,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:08:27,594 INFO L225 Difference]: With dead ends: 7810 [2023-11-23 15:08:27,594 INFO L226 Difference]: Without dead ends: 5340 [2023-11-23 15:08:27,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-23 15:08:27,598 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 1554 mSDsluCounter, 3283 mSDsCounter, 0 mSdLazyCounter, 3968 mSolverCounterSat, 642 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1568 SdHoareTripleChecker+Valid, 4133 SdHoareTripleChecker+Invalid, 4623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 642 IncrementalHoareTripleChecker+Valid, 3968 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.6s IncrementalHoareTripleChecker+Time [2023-11-23 15:08:27,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1568 Valid, 4133 Invalid, 4623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [642 Valid, 3968 Invalid, 13 Unknown, 0 Unchecked, 36.6s Time] [2023-11-23 15:08:27,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5340 states. [2023-11-23 15:08:27,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5340 to 2508. [2023-11-23 15:08:27,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2508 states, 1936 states have (on average 1.4364669421487604) internal successors, (2781), 1945 states have internal predecessors, (2781), 433 states have call successors, (433), 138 states have call predecessors, (433), 138 states have return successors, (433), 432 states have call predecessors, (433), 433 states have call successors, (433) [2023-11-23 15:08:27,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2508 states to 2508 states and 3647 transitions. [2023-11-23 15:08:27,699 INFO L78 Accepts]: Start accepts. Automaton has 2508 states and 3647 transitions. Word has length 205 [2023-11-23 15:08:27,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:08:27,701 INFO L495 AbstractCegarLoop]: Abstraction has 2508 states and 3647 transitions. [2023-11-23 15:08:27,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 15:08:27,701 INFO L276 IsEmpty]: Start isEmpty. Operand 2508 states and 3647 transitions. [2023-11-23 15:08:27,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-23 15:08:27,703 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:08:27,704 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 3, 3, 3, 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] [2023-11-23 15:08:27,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 15:08:27,704 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_ttyErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_ttyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:08:27,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:08:27,704 INFO L85 PathProgramCache]: Analyzing trace with hash 774438069, now seen corresponding path program 1 times [2023-11-23 15:08:27,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:08:27,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524649882] [2023-11-23 15:08:27,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:08:27,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:08:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:27,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:08:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:27,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:08:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:27,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:08:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:27,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 15:08:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:27,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 15:08:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:27,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 15:08:27,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:27,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:08:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:27,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:08:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:27,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 15:08:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:27,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:08:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:27,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:08:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:27,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 15:08:27,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:28,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 15:08:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:28,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 15:08:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:28,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 15:08:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:28,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 15:08:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:28,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 15:08:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:28,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 15:08:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:28,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:08:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:28,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:08:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:28,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-23 15:08:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:28,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-23 15:08:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:28,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:08:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:28,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:08:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:28,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-23 15:08:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:28,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:08:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:28,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:08:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:28,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-11-23 15:08:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:28,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:08:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:28,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-11-23 15:08:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:28,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-11-23 15:08:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:28,064 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2023-11-23 15:08:28,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:08:28,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524649882] [2023-11-23 15:08:28,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524649882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:08:28,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:08:28,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 15:08:28,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925366982] [2023-11-23 15:08:28,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:08:28,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 15:08:28,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:08:28,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 15:08:28,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:08:28,066 INFO L87 Difference]: Start difference. First operand 2508 states and 3647 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 15:08:31,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:33,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:34,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:36,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:38,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:40,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:42,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:44,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:46,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:48,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:51,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:53,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:54,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:08:54,566 INFO L93 Difference]: Finished difference Result 6774 states and 10128 transitions. [2023-11-23 15:08:54,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 15:08:54,567 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 213 [2023-11-23 15:08:54,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:08:54,582 INFO L225 Difference]: With dead ends: 6774 [2023-11-23 15:08:54,582 INFO L226 Difference]: Without dead ends: 4300 [2023-11-23 15:08:54,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-11-23 15:08:54,587 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 1556 mSDsluCounter, 2055 mSDsCounter, 0 mSdLazyCounter, 2911 mSolverCounterSat, 643 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 3564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 2911 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.2s IncrementalHoareTripleChecker+Time [2023-11-23 15:08:54,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1604 Valid, 2748 Invalid, 3564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 2911 Invalid, 10 Unknown, 0 Unchecked, 26.2s Time] [2023-11-23 15:08:54,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4300 states. [2023-11-23 15:08:54,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4300 to 3104. [2023-11-23 15:08:54,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 2412 states have (on average 1.4328358208955223) internal successors, (3456), 2423 states have internal predecessors, (3456), 509 states have call successors, (509), 182 states have call predecessors, (509), 182 states have return successors, (509), 508 states have call predecessors, (509), 509 states have call successors, (509) [2023-11-23 15:08:54,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 4474 transitions. [2023-11-23 15:08:54,741 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 4474 transitions. Word has length 213 [2023-11-23 15:08:54,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:08:54,741 INFO L495 AbstractCegarLoop]: Abstraction has 3104 states and 4474 transitions. [2023-11-23 15:08:54,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 15:08:54,742 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 4474 transitions. [2023-11-23 15:08:54,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-11-23 15:08:54,745 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:08:54,745 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:08:54,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 15:08:54,746 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_ttyErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_ttyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:08:54,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:08:54,746 INFO L85 PathProgramCache]: Analyzing trace with hash 787938237, now seen corresponding path program 1 times [2023-11-23 15:08:54,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:08:54,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59805057] [2023-11-23 15:08:54,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:08:54,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:08:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:54,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:08:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:54,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:08:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:54,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:08:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:54,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 15:08:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:54,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 15:08:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:54,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 15:08:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:54,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:08:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:54,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:08:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:54,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 15:08:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:54,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:08:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:54,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:08:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:54,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 15:08:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:54,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 15:08:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:55,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 15:08:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:55,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 15:08:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:55,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 15:08:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:55,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 15:08:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:55,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 15:08:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:55,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:08:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:55,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:08:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:55,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-23 15:08:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:55,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-23 15:08:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:55,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:08:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:55,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:08:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:55,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-23 15:08:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:55,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:08:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:55,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:08:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:55,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-11-23 15:08:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:55,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:08:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:55,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-11-23 15:08:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:55,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-11-23 15:08:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:55,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:08:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:55,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-23 15:08:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:55,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 15:08:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:55,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:08:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:55,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-11-23 15:08:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:08:55,073 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2023-11-23 15:08:55,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:08:55,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59805057] [2023-11-23 15:08:55,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59805057] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:08:55,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:08:55,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 15:08:55,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955897498] [2023-11-23 15:08:55,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:08:55,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 15:08:55,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:08:55,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 15:08:55,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-23 15:08:55,075 INFO L87 Difference]: Start difference. First operand 3104 states and 4474 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (26), 6 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-23 15:08:57,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:08:59,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:09:01,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:09:03,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:09:05,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:09:08,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:09:10,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:09:13,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:09:15,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:09:17,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:09:19,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:09:21,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:09:22,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:09:24,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:09:26,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:09:28,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:09:28,670 INFO L93 Difference]: Finished difference Result 10410 states and 15420 transitions. [2023-11-23 15:09:28,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 15:09:28,671 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (26), 6 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 252 [2023-11-23 15:09:28,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:09:28,702 INFO L225 Difference]: With dead ends: 10410 [2023-11-23 15:09:28,702 INFO L226 Difference]: Without dead ends: 7340 [2023-11-23 15:09:28,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-23 15:09:28,709 INFO L413 NwaCegarLoop]: 1000 mSDtfsCounter, 1931 mSDsluCounter, 3123 mSDsCounter, 0 mSdLazyCounter, 3824 mSolverCounterSat, 874 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1964 SdHoareTripleChecker+Valid, 4123 SdHoareTripleChecker+Invalid, 4710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 874 IncrementalHoareTripleChecker+Valid, 3824 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.1s IncrementalHoareTripleChecker+Time [2023-11-23 15:09:28,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1964 Valid, 4123 Invalid, 4710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [874 Valid, 3824 Invalid, 12 Unknown, 0 Unchecked, 33.1s Time] [2023-11-23 15:09:28,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7340 states. [2023-11-23 15:09:28,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7340 to 3108. [2023-11-23 15:09:28,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3108 states, 2416 states have (on average 1.4321192052980132) internal successors, (3460), 2427 states have internal predecessors, (3460), 509 states have call successors, (509), 182 states have call predecessors, (509), 182 states have return successors, (509), 508 states have call predecessors, (509), 509 states have call successors, (509) [2023-11-23 15:09:28,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3108 states to 3108 states and 4478 transitions. [2023-11-23 15:09:28,888 INFO L78 Accepts]: Start accepts. Automaton has 3108 states and 4478 transitions. Word has length 252 [2023-11-23 15:09:28,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:09:28,888 INFO L495 AbstractCegarLoop]: Abstraction has 3108 states and 4478 transitions. [2023-11-23 15:09:28,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (26), 6 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-23 15:09:28,889 INFO L276 IsEmpty]: Start isEmpty. Operand 3108 states and 4478 transitions. [2023-11-23 15:09:28,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2023-11-23 15:09:28,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:09:28,894 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:09:28,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 15:09:28,894 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_ttyErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_ttyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:09:28,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:09:28,895 INFO L85 PathProgramCache]: Analyzing trace with hash 640367717, now seen corresponding path program 1 times [2023-11-23 15:09:28,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:09:28,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945499055] [2023-11-23 15:09:28,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:09:28,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:09:28,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:09:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:09:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:09:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 15:09:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 15:09:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 15:09:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:09:29,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:09:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 15:09:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:09:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:09:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 15:09:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 15:09:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 15:09:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 15:09:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 15:09:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 15:09:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 15:09:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:09:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:09:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-23 15:09:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-23 15:09:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:09:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:09:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-23 15:09:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:09:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:09:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-11-23 15:09:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:09:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-11-23 15:09:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-11-23 15:09:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:09:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-23 15:09:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 15:09:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:09:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-11-23 15:09:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:09:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-11-23 15:09:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-11-23 15:09:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-11-23 15:09:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2023-11-23 15:09:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-23 15:09:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2023-11-23 15:09:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:29,288 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2023-11-23 15:09:29,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:09:29,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945499055] [2023-11-23 15:09:29,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945499055] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:09:29,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:09:29,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 15:09:29,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797221500] [2023-11-23 15:09:29,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:09:29,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 15:09:29,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:09:29,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 15:09:29,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 15:09:29,291 INFO L87 Difference]: Start difference. First operand 3108 states and 4478 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (32), 7 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-23 15:09:31,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:09:33,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:09:35,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:09:37,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:09:39,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:09:41,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:09:43,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:09:45,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:09:46,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:09:46,483 INFO L93 Difference]: Finished difference Result 7378 states and 10898 transitions. [2023-11-23 15:09:46,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:09:46,483 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (32), 7 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 304 [2023-11-23 15:09:46,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:09:46,494 INFO L225 Difference]: With dead ends: 7378 [2023-11-23 15:09:46,494 INFO L226 Difference]: Without dead ends: 4304 [2023-11-23 15:09:46,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-23 15:09:46,501 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 1050 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 631 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 2287 SdHoareTripleChecker+Invalid, 2405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 631 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2023-11-23 15:09:46,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1054 Valid, 2287 Invalid, 2405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [631 Valid, 1768 Invalid, 6 Unknown, 0 Unchecked, 16.9s Time] [2023-11-23 15:09:46,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4304 states. [2023-11-23 15:09:46,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4304 to 3110. [2023-11-23 15:09:46,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3110 states, 2418 states have (on average 1.4317617866004964) internal successors, (3462), 2429 states have internal predecessors, (3462), 509 states have call successors, (509), 182 states have call predecessors, (509), 182 states have return successors, (509), 508 states have call predecessors, (509), 509 states have call successors, (509) [2023-11-23 15:09:46,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 4480 transitions. [2023-11-23 15:09:46,689 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 4480 transitions. Word has length 304 [2023-11-23 15:09:46,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:09:46,690 INFO L495 AbstractCegarLoop]: Abstraction has 3110 states and 4480 transitions. [2023-11-23 15:09:46,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (32), 7 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-23 15:09:46,691 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 4480 transitions. [2023-11-23 15:09:46,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2023-11-23 15:09:46,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:09:46,696 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:09:46,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 15:09:46,696 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_ttyErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_ttyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:09:46,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:09:46,696 INFO L85 PathProgramCache]: Analyzing trace with hash 567981159, now seen corresponding path program 1 times [2023-11-23 15:09:46,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:09:46,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967320457] [2023-11-23 15:09:46,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:09:46,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:09:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:09:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:09:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:09:46,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 15:09:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 15:09:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 15:09:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:09:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:09:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 15:09:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:09:46,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:09:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 15:09:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 15:09:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 15:09:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 15:09:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 15:09:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 15:09:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 15:09:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:09:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:09:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-23 15:09:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-23 15:09:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:09:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:09:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-23 15:09:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:09:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:09:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-11-23 15:09:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:09:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:46,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-11-23 15:09:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:47,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-11-23 15:09:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:47,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:09:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:47,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-23 15:09:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:47,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 15:09:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:47,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:09:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:47,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-11-23 15:09:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:47,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:09:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:47,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-11-23 15:09:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:47,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-11-23 15:09:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:47,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-11-23 15:09:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:47,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2023-11-23 15:09:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:47,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-23 15:09:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:47,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2023-11-23 15:09:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:09:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2023-11-23 15:09:47,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:09:47,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967320457] [2023-11-23 15:09:47,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967320457] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:09:47,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:09:47,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 15:09:47,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729301309] [2023-11-23 15:09:47,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:09:47,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 15:09:47,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:09:47,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 15:09:47,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 15:09:47,066 INFO L87 Difference]: Start difference. First operand 3110 states and 4480 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (32), 7 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-23 15:09:49,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:09:51,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:09:53,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:09:55,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:09:58,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:10:00,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:10:01,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:10:02,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:10:02,696 INFO L93 Difference]: Finished difference Result 7382 states and 10902 transitions. [2023-11-23 15:10:02,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:10:02,696 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (32), 7 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 304 [2023-11-23 15:10:02,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:10:02,706 INFO L225 Difference]: With dead ends: 7382 [2023-11-23 15:10:02,706 INFO L226 Difference]: Without dead ends: 4306 [2023-11-23 15:10:02,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-23 15:10:02,712 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 1270 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 1599 mSolverCounterSat, 808 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 2292 SdHoareTripleChecker+Invalid, 2412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 808 IncrementalHoareTripleChecker+Valid, 1599 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2023-11-23 15:10:02,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1274 Valid, 2292 Invalid, 2412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [808 Valid, 1599 Invalid, 5 Unknown, 0 Unchecked, 15.3s Time] [2023-11-23 15:10:02,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4306 states. [2023-11-23 15:10:02,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4306 to 3112. [2023-11-23 15:10:02,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3112 states, 2420 states have (on average 1.431404958677686) internal successors, (3464), 2431 states have internal predecessors, (3464), 509 states have call successors, (509), 182 states have call predecessors, (509), 182 states have return successors, (509), 508 states have call predecessors, (509), 509 states have call successors, (509) [2023-11-23 15:10:02,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3112 states to 3112 states and 4482 transitions. [2023-11-23 15:10:02,852 INFO L78 Accepts]: Start accepts. Automaton has 3112 states and 4482 transitions. Word has length 304 [2023-11-23 15:10:02,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:10:02,853 INFO L495 AbstractCegarLoop]: Abstraction has 3112 states and 4482 transitions. [2023-11-23 15:10:02,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (32), 7 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-23 15:10:02,853 INFO L276 IsEmpty]: Start isEmpty. Operand 3112 states and 4482 transitions. [2023-11-23 15:10:02,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2023-11-23 15:10:02,857 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:10:02,857 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:10:02,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 15:10:02,858 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_ttyErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_ttyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 15:10:02,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:10:02,858 INFO L85 PathProgramCache]: Analyzing trace with hash 58508069, now seen corresponding path program 1 times [2023-11-23 15:10:02,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:10:02,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442456695] [2023-11-23 15:10:02,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:10:02,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:10:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:10:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:10:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:10:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 15:10:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 15:10:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 15:10:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:10:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:10:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 15:10:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:10:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:10:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 15:10:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 15:10:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 15:10:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 15:10:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 15:10:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 15:10:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 15:10:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:10:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:10:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-23 15:10:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-23 15:10:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:10:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:10:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-23 15:10:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:10:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 15:10:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-11-23 15:10:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:10:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-11-23 15:10:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-11-23 15:10:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:10:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-23 15:10:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 15:10:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:10:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-11-23 15:10:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 15:10:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-11-23 15:10:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-11-23 15:10:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-11-23 15:10:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2023-11-23 15:10:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-23 15:10:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2023-11-23 15:10:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:10:03,323 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2023-11-23 15:10:03,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:10:03,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442456695] [2023-11-23 15:10:03,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442456695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:10:03,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:10:03,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 15:10:03,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326143461] [2023-11-23 15:10:03,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:10:03,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:10:03,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:10:03,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:10:03,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:10:03,326 INFO L87 Difference]: Start difference. First operand 3112 states and 4482 transitions. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (32), 7 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-23 15:10:06,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:10:08,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:10:10,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:10:12,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:10:15,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 15:10:17,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15