./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/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 ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --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 2fb57b2bb2bc18ca610846448c9906bd8fe64138062c47c98cb2cc2c7b0326e3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 00:19:34,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 00:19:34,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 00:19:34,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 00:19:34,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 00:19:34,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 00:19:34,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 00:19:34,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 00:19:34,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 00:19:34,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 00:19:34,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 00:19:34,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 00:19:34,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 00:19:34,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 00:19:34,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 00:19:34,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 00:19:34,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 00:19:34,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 00:19:34,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 00:19:34,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 00:19:34,366 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 00:19:34,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 00:19:34,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 00:19:34,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 00:19:34,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 00:19:34,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 00:19:34,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 00:19:34,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 00:19:34,374 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 00:19:34,374 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 00:19:34,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 00:19:34,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 00:19:34,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 00:19:34,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 00:19:34,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 00:19:34,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 00:19:34,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 00:19:34,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 00:19:34,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 00:19:34,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 00:19:34,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 00:19:34,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 00:19:34,387 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-20 00:19:34,418 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 00:19:34,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 00:19:34,419 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 00:19:34,419 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 00:19:34,420 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 00:19:34,420 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 00:19:34,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 00:19:34,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 00:19:34,421 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 00:19:34,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 00:19:34,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 00:19:34,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 00:19:34,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 00:19:34,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 00:19:34,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 00:19:34,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 00:19:34,424 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 00:19:34,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 00:19:34,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 00:19:34,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 00:19:34,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 00:19:34,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 00:19:34,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 00:19:34,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 00:19:34,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 00:19:34,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 00:19:34,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 00:19:34,426 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 00:19:34,426 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 00:19:34,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 00:19:34,426 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fb57b2bb2bc18ca610846448c9906bd8fe64138062c47c98cb2cc2c7b0326e3 [2022-07-20 00:19:34,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 00:19:34,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 00:19:34,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 00:19:34,684 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 00:19:34,684 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 00:19:34,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i [2022-07-20 00:19:34,746 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd1953dca/45c91467e7d24e75b041e1c916394749/FLAGed416bc32 [2022-07-20 00:19:35,546 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 00:19:35,547 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i [2022-07-20 00:19:35,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd1953dca/45c91467e7d24e75b041e1c916394749/FLAGed416bc32 [2022-07-20 00:19:35,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd1953dca/45c91467e7d24e75b041e1c916394749 [2022-07-20 00:19:35,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 00:19:35,733 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 00:19:35,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 00:19:35,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 00:19:35,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 00:19:35,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:19:35" (1/1) ... [2022-07-20 00:19:35,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38a78ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:19:35, skipping insertion in model container [2022-07-20 00:19:35,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:19:35" (1/1) ... [2022-07-20 00:19:35,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 00:19:35,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 00:19:36,335 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4492] [2022-07-20 00:19:37,940 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i[415155,415168] [2022-07-20 00:19:37,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 00:19:38,028 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 00:19:38,121 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4492] [2022-07-20 00:19:38,506 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i[415155,415168] [2022-07-20 00:19:38,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 00:19:38,587 INFO L208 MainTranslator]: Completed translation [2022-07-20 00:19:38,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:19:38 WrapperNode [2022-07-20 00:19:38,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 00:19:38,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 00:19:38,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 00:19:38,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 00:19:38,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:19:38" (1/1) ... [2022-07-20 00:19:38,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:19:38" (1/1) ... [2022-07-20 00:19:38,910 INFO L137 Inliner]: procedures = 174, calls = 2584, calls flagged for inlining = 78, calls inlined = 71, statements flattened = 5590 [2022-07-20 00:19:38,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 00:19:38,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 00:19:38,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 00:19:38,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 00:19:38,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:19:38" (1/1) ... [2022-07-20 00:19:38,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:19:38" (1/1) ... [2022-07-20 00:19:38,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:19:38" (1/1) ... [2022-07-20 00:19:38,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:19:38" (1/1) ... [2022-07-20 00:19:39,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:19:38" (1/1) ... [2022-07-20 00:19:39,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:19:38" (1/1) ... [2022-07-20 00:19:39,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:19:38" (1/1) ... [2022-07-20 00:19:39,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 00:19:39,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 00:19:39,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 00:19:39,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 00:19:39,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:19:38" (1/1) ... [2022-07-20 00:19:39,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 00:19:39,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 00:19:39,244 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) [2022-07-20 00:19:39,259 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 [2022-07-20 00:19:39,278 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-07-20 00:19:39,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-07-20 00:19:39,279 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_free_device [2022-07-20 00:19:39,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2022-07-20 00:19:39,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2022-07-20 00:19:39,279 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_dvb_fini [2022-07-20 00:19:39,280 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_dvb_fini [2022-07-20 00:19:39,280 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-20 00:19:39,280 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-20 00:19:39,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-20 00:19:39,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-20 00:19:39,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-20 00:19:39,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-20 00:19:39,281 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-20 00:19:39,281 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_alloc_urbs [2022-07-20 00:19:39,281 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_alloc_urbs [2022-07-20 00:19:39,281 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~$Pointer$ [2022-07-20 00:19:39,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~$Pointer$ [2022-07-20 00:19:39,282 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2022-07-20 00:19:39,282 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2022-07-20 00:19:39,282 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_attach_xc3028 [2022-07-20 00:19:39,282 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_attach_xc3028 [2022-07-20 00:19:39,282 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_detach [2022-07-20 00:19:39,282 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_detach [2022-07-20 00:19:39,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_1 [2022-07-20 00:19:39,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_1 [2022-07-20 00:19:39,283 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-20 00:19:39,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-20 00:19:39,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-20 00:19:39,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-20 00:19:39,283 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_resume [2022-07-20 00:19:39,284 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_resume [2022-07-20 00:19:39,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-07-20 00:19:39,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-07-20 00:19:39,284 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_frontend [2022-07-20 00:19:39,284 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_frontend [2022-07-20 00:19:39,284 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_suspend [2022-07-20 00:19:39,285 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_suspend [2022-07-20 00:19:39,285 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_reg [2022-07-20 00:19:39,285 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_reg [2022-07-20 00:19:39,285 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-20 00:19:39,285 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-20 00:19:39,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop_1 [2022-07-20 00:19:39,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop_1 [2022-07-20 00:19:39,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-20 00:19:39,286 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-20 00:19:39,286 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-20 00:19:39,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-20 00:19:39,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-20 00:19:39,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-20 00:19:39,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-20 00:19:39,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_start_1 [2022-07-20 00:19:39,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_start_1 [2022-07-20 00:19:39,287 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2022-07-20 00:19:39,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2022-07-20 00:19:39,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-20 00:19:39,288 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-20 00:19:39,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-20 00:19:39,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-20 00:19:39,288 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-20 00:19:39,288 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-20 00:19:39,288 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2022-07-20 00:19:39,289 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2022-07-20 00:19:39,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 00:19:39,289 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_register_frontend [2022-07-20 00:19:39,289 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_register_frontend [2022-07-20 00:19:39,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 00:19:39,289 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_dvb_suspend [2022-07-20 00:19:39,289 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_dvb_suspend [2022-07-20 00:19:39,290 INFO L130 BoogieDeclarations]: Found specification of procedure prevent_sleep [2022-07-20 00:19:39,290 INFO L138 BoogieDeclarations]: Found implementation of procedure prevent_sleep [2022-07-20 00:19:39,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 00:19:39,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 00:19:39,290 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_master_send [2022-07-20 00:19:39,290 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_master_send [2022-07-20 00:19:39,291 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_free [2022-07-20 00:19:39,291 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_free [2022-07-20 00:19:39,291 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_dvb_resume [2022-07-20 00:19:39,291 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_dvb_resume [2022-07-20 00:19:39,291 INFO L130 BoogieDeclarations]: Found specification of procedure mt352_write [2022-07-20 00:19:39,291 INFO L138 BoogieDeclarations]: Found implementation of procedure mt352_write [2022-07-20 00:19:39,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 00:19:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_get [2022-07-20 00:19:39,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_get [2022-07-20 00:19:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-20 00:19:39,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-20 00:19:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-07-20 00:19:39,292 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-07-20 00:19:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure drxk_gate_ctrl [2022-07-20 00:19:39,293 INFO L138 BoogieDeclarations]: Found implementation of procedure drxk_gate_ctrl [2022-07-20 00:19:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-07-20 00:19:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_swfilter [2022-07-20 00:19:39,293 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_swfilter [2022-07-20 00:19:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_device [2022-07-20 00:19:39,293 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_device [2022-07-20 00:19:39,294 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_request_one [2022-07-20 00:19:39,294 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_request_one [2022-07-20 00:19:39,294 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-07-20 00:19:39,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-07-20 00:19:39,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 00:19:39,294 INFO L130 BoogieDeclarations]: Found specification of procedure print_err_status [2022-07-20 00:19:39,295 INFO L138 BoogieDeclarations]: Found implementation of procedure print_err_status [2022-07-20 00:19:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-20 00:19:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_set_mode [2022-07-20 00:19:39,295 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_set_mode [2022-07-20 00:19:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure sema_init [2022-07-20 00:19:39,295 INFO L138 BoogieDeclarations]: Found implementation of procedure sema_init [2022-07-20 00:19:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2022-07-20 00:19:39,296 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2022-07-20 00:19:39,296 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-20 00:19:39,296 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-20 00:19:39,296 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2022-07-20 00:19:39,296 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2022-07-20 00:19:39,296 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-20 00:19:39,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-20 00:19:39,297 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~int~TO~$Pointer$ [2022-07-20 00:19:39,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~int~TO~$Pointer$ [2022-07-20 00:19:39,297 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-20 00:19:39,297 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-20 00:19:39,297 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_gpio_set [2022-07-20 00:19:39,298 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_gpio_set [2022-07-20 00:19:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 00:19:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 00:19:39,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 00:19:39,298 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-20 00:19:39,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-20 00:19:40,004 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 00:19:40,007 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 00:19:40,299 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-20 00:20:03,943 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 00:20:03,957 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 00:20:03,957 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2022-07-20 00:20:03,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:20:03 BoogieIcfgContainer [2022-07-20 00:20:03,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 00:20:03,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 00:20:03,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 00:20:03,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 00:20:03,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 12:19:35" (1/3) ... [2022-07-20 00:20:03,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118a8016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:20:03, skipping insertion in model container [2022-07-20 00:20:03,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:19:38" (2/3) ... [2022-07-20 00:20:03,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118a8016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:20:03, skipping insertion in model container [2022-07-20 00:20:03,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:20:03" (3/3) ... [2022-07-20 00:20:03,969 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i [2022-07-20 00:20:03,981 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 00:20:03,981 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 00:20:04,056 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 00:20:04,061 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=LoopsAndPotentialCycles, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@23e7cdd8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2cfb4432 [2022-07-20 00:20:04,062 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 00:20:04,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 1533 states, 1083 states have (on average 1.420129270544783) internal successors, (1538), 1135 states have internal predecessors, (1538), 393 states have call successors, (393), 56 states have call predecessors, (393), 55 states have return successors, (389), 388 states have call predecessors, (389), 389 states have call successors, (389) [2022-07-20 00:20:04,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-20 00:20:04,083 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:20:04,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:20:04,085 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:20:04,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:20:04,088 INFO L85 PathProgramCache]: Analyzing trace with hash -237364010, now seen corresponding path program 1 times [2022-07-20 00:20:04,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:20:04,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297589831] [2022-07-20 00:20:04,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:20:04,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:20:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:04,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:20:04,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:04,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:20:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:04,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:20:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:04,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 00:20:04,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:20:04,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297589831] [2022-07-20 00:20:04,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297589831] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:20:04,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:20:04,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 00:20:04,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025586285] [2022-07-20 00:20:04,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:20:04,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 00:20:04,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:20:04,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 00:20:04,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 00:20:04,732 INFO L87 Difference]: Start difference. First operand has 1533 states, 1083 states have (on average 1.420129270544783) internal successors, (1538), 1135 states have internal predecessors, (1538), 393 states have call successors, (393), 56 states have call predecessors, (393), 55 states have return successors, (389), 388 states have call predecessors, (389), 389 states have call successors, (389) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-20 00:20:08,189 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:10,216 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:13,732 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:15,832 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:18,591 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:24,022 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:24,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:20:24,630 INFO L93 Difference]: Finished difference Result 3120 states and 4948 transitions. [2022-07-20 00:20:24,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 00:20:24,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2022-07-20 00:20:24,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:20:24,655 INFO L225 Difference]: With dead ends: 3120 [2022-07-20 00:20:24,656 INFO L226 Difference]: Without dead ends: 1581 [2022-07-20 00:20:24,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 00:20:24,676 INFO L413 NwaCegarLoop]: 2294 mSDtfsCounter, 535 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 855 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 3366 SdHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 855 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2022-07-20 00:20:24,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 3366 Invalid, 1561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [855 Valid, 700 Invalid, 6 Unknown, 0 Unchecked, 19.6s Time] [2022-07-20 00:20:24,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2022-07-20 00:20:24,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1522. [2022-07-20 00:20:24,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1078 states have (on average 1.3710575139146568) internal successors, (1478), 1124 states have internal predecessors, (1478), 389 states have call successors, (389), 55 states have call predecessors, (389), 54 states have return successors, (387), 386 states have call predecessors, (387), 387 states have call successors, (387) [2022-07-20 00:20:24,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2254 transitions. [2022-07-20 00:20:24,819 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2254 transitions. Word has length 31 [2022-07-20 00:20:24,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:20:24,819 INFO L495 AbstractCegarLoop]: Abstraction has 1522 states and 2254 transitions. [2022-07-20 00:20:24,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-20 00:20:24,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2254 transitions. [2022-07-20 00:20:24,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-20 00:20:24,826 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:20:24,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:20:24,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 00:20:24,828 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:20:24,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:20:24,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1055012460, now seen corresponding path program 1 times [2022-07-20 00:20:24,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:20:24,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923113103] [2022-07-20 00:20:24,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:20:24,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:20:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:25,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:20:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:25,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:20:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:25,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:20:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:25,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 00:20:25,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:20:25,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923113103] [2022-07-20 00:20:25,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923113103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:20:25,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:20:25,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 00:20:25,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038504639] [2022-07-20 00:20:25,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:20:25,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 00:20:25,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:20:25,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 00:20:25,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-20 00:20:25,148 INFO L87 Difference]: Start difference. First operand 1522 states and 2254 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-20 00:20:29,798 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:31,889 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:37,201 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:39,272 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:42,710 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:54,012 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:20:56,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:20:56,630 INFO L93 Difference]: Finished difference Result 4649 states and 7103 transitions. [2022-07-20 00:20:56,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 00:20:56,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2022-07-20 00:20:56,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:20:56,656 INFO L225 Difference]: With dead ends: 4649 [2022-07-20 00:20:56,657 INFO L226 Difference]: Without dead ends: 3132 [2022-07-20 00:20:56,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-20 00:20:56,689 INFO L413 NwaCegarLoop]: 2634 mSDtfsCounter, 2422 mSDsluCounter, 3627 mSDsCounter, 0 mSdLazyCounter, 2879 mSolverCounterSat, 938 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2857 SdHoareTripleChecker+Valid, 6261 SdHoareTripleChecker+Invalid, 3823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 938 IncrementalHoareTripleChecker+Valid, 2879 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.0s IncrementalHoareTripleChecker+Time [2022-07-20 00:20:56,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2857 Valid, 6261 Invalid, 3823 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [938 Valid, 2879 Invalid, 6 Unknown, 0 Unchecked, 31.0s Time] [2022-07-20 00:20:56,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3132 states. [2022-07-20 00:20:56,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3132 to 3010. [2022-07-20 00:20:56,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3010 states, 2132 states have (on average 1.372889305816135) internal successors, (2927), 2223 states have internal predecessors, (2927), 772 states have call successors, (772), 106 states have call predecessors, (772), 105 states have return successors, (770), 768 states have call predecessors, (770), 770 states have call successors, (770) [2022-07-20 00:20:56,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 4469 transitions. [2022-07-20 00:20:56,975 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 4469 transitions. Word has length 31 [2022-07-20 00:20:56,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:20:56,976 INFO L495 AbstractCegarLoop]: Abstraction has 3010 states and 4469 transitions. [2022-07-20 00:20:56,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-20 00:20:56,977 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 4469 transitions. [2022-07-20 00:20:56,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-20 00:20:56,980 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:20:56,981 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:20:56,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-20 00:20:56,981 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:20:56,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:20:56,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1994554423, now seen corresponding path program 1 times [2022-07-20 00:20:56,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:20:56,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780302750] [2022-07-20 00:20:56,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:20:56,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:20:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:57,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:20:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:57,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:20:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:57,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:20:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:20:57,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 00:20:57,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:20:57,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780302750] [2022-07-20 00:20:57,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780302750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:20:57,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:20:57,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 00:20:57,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751782223] [2022-07-20 00:20:57,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:20:57,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 00:20:57,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:20:57,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 00:20:57,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-20 00:20:57,530 INFO L87 Difference]: Start difference. First operand 3010 states and 4469 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 00:20:59,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:01,594 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:03,626 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:06,939 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:08,972 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:11,804 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:16,498 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:18,533 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:20,571 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:22,599 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:24,623 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:29,702 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:31,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:21:31,137 INFO L93 Difference]: Finished difference Result 9250 states and 14218 transitions. [2022-07-20 00:21:31,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 00:21:31,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2022-07-20 00:21:31,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:21:31,171 INFO L225 Difference]: With dead ends: 9250 [2022-07-20 00:21:31,171 INFO L226 Difference]: Without dead ends: 6241 [2022-07-20 00:21:31,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-20 00:21:31,185 INFO L413 NwaCegarLoop]: 2707 mSDtfsCounter, 2952 mSDsluCounter, 2661 mSDsCounter, 0 mSdLazyCounter, 1909 mSolverCounterSat, 1823 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3354 SdHoareTripleChecker+Valid, 5368 SdHoareTripleChecker+Invalid, 3743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1823 IncrementalHoareTripleChecker+Valid, 1909 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.2s IncrementalHoareTripleChecker+Time [2022-07-20 00:21:31,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3354 Valid, 5368 Invalid, 3743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1823 Valid, 1909 Invalid, 11 Unknown, 0 Unchecked, 33.2s Time] [2022-07-20 00:21:31,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2022-07-20 00:21:31,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 6000. [2022-07-20 00:21:31,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6000 states, 4249 states have (on average 1.3732642974817604) internal successors, (5835), 4430 states have internal predecessors, (5835), 1541 states have call successors, (1541), 210 states have call predecessors, (1541), 209 states have return successors, (1559), 1535 states have call predecessors, (1559), 1539 states have call successors, (1559) [2022-07-20 00:21:31,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6000 states to 6000 states and 8935 transitions. [2022-07-20 00:21:31,437 INFO L78 Accepts]: Start accepts. Automaton has 6000 states and 8935 transitions. Word has length 33 [2022-07-20 00:21:31,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:21:31,437 INFO L495 AbstractCegarLoop]: Abstraction has 6000 states and 8935 transitions. [2022-07-20 00:21:31,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 00:21:31,438 INFO L276 IsEmpty]: Start isEmpty. Operand 6000 states and 8935 transitions. [2022-07-20 00:21:31,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-20 00:21:31,440 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:21:31,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:21:31,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-20 00:21:31,441 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:21:31,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:21:31,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1941480318, now seen corresponding path program 1 times [2022-07-20 00:21:31,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:21:31,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31379156] [2022-07-20 00:21:31,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:21:31,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:21:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:31,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:21:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:31,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:21:31,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:31,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:21:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:31,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 00:21:31,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:21:31,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31379156] [2022-07-20 00:21:31,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31379156] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:21:31,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:21:31,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 00:21:31,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322522264] [2022-07-20 00:21:31,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:21:31,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 00:21:31,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:21:31,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 00:21:31,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-20 00:21:31,732 INFO L87 Difference]: Start difference. First operand 6000 states and 8935 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-20 00:21:33,793 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:36,947 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:38,972 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:42,979 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:45,012 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:48,213 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:55,027 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:21:56,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:21:56,077 INFO L93 Difference]: Finished difference Result 12448 states and 18923 transitions. [2022-07-20 00:21:56,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 00:21:56,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-07-20 00:21:56,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:21:56,114 INFO L225 Difference]: With dead ends: 12448 [2022-07-20 00:21:56,115 INFO L226 Difference]: Without dead ends: 6453 [2022-07-20 00:21:56,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-20 00:21:56,138 INFO L413 NwaCegarLoop]: 2289 mSDtfsCounter, 361 mSDsluCounter, 3571 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 434 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 5860 SdHoareTripleChecker+Invalid, 2664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2022-07-20 00:21:56,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 5860 Invalid, 2664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 2224 Invalid, 6 Unknown, 0 Unchecked, 24.0s Time] [2022-07-20 00:21:56,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6453 states. [2022-07-20 00:21:56,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6453 to 6210. [2022-07-20 00:21:56,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6210 states, 4410 states have (on average 1.3696145124716552) internal successors, (6040), 4591 states have internal predecessors, (6040), 1583 states have call successors, (1583), 217 states have call predecessors, (1583), 216 states have return successors, (1601), 1577 states have call predecessors, (1601), 1581 states have call successors, (1601) [2022-07-20 00:21:56,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6210 states to 6210 states and 9224 transitions. [2022-07-20 00:21:56,431 INFO L78 Accepts]: Start accepts. Automaton has 6210 states and 9224 transitions. Word has length 41 [2022-07-20 00:21:56,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:21:56,432 INFO L495 AbstractCegarLoop]: Abstraction has 6210 states and 9224 transitions. [2022-07-20 00:21:56,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-20 00:21:56,433 INFO L276 IsEmpty]: Start isEmpty. Operand 6210 states and 9224 transitions. [2022-07-20 00:21:56,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-20 00:21:56,435 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:21:56,436 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:21:56,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-20 00:21:56,438 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:21:56,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:21:56,439 INFO L85 PathProgramCache]: Analyzing trace with hash -981262072, now seen corresponding path program 1 times [2022-07-20 00:21:56,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:21:56,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016310214] [2022-07-20 00:21:56,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:21:56,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:21:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:56,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:21:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:56,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:21:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:56,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:21:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:56,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-20 00:21:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:56,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:21:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:56,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:21:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:21:56,800 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-20 00:21:56,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:21:56,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016310214] [2022-07-20 00:21:56,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016310214] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:21:56,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:21:56,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 00:21:56,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277773519] [2022-07-20 00:21:56,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:21:56,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 00:21:56,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:21:56,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 00:21:56,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-20 00:21:56,805 INFO L87 Difference]: Start difference. First operand 6210 states and 9224 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-20 00:21:58,892 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:01,911 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:03,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:07,260 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:09,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:11,946 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:17,065 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:17,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:22:17,861 INFO L93 Difference]: Finished difference Result 13774 states and 20817 transitions. [2022-07-20 00:22:17,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 00:22:17,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 69 [2022-07-20 00:22:17,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:22:17,898 INFO L225 Difference]: With dead ends: 13774 [2022-07-20 00:22:17,899 INFO L226 Difference]: Without dead ends: 7583 [2022-07-20 00:22:17,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-20 00:22:17,917 INFO L413 NwaCegarLoop]: 2358 mSDtfsCounter, 1101 mSDsluCounter, 2590 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 1050 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 4948 SdHoareTripleChecker+Invalid, 2665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1050 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2022-07-20 00:22:17,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 4948 Invalid, 2665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1050 Valid, 1609 Invalid, 6 Unknown, 0 Unchecked, 20.8s Time] [2022-07-20 00:22:17,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7583 states. [2022-07-20 00:22:18,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7583 to 7150. [2022-07-20 00:22:18,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7150 states, 5140 states have (on average 1.3626459143968872) internal successors, (7004), 5337 states have internal predecessors, (7004), 1727 states have call successors, (1727), 283 states have call predecessors, (1727), 282 states have return successors, (1745), 1721 states have call predecessors, (1745), 1725 states have call successors, (1745) [2022-07-20 00:22:18,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7150 states to 7150 states and 10476 transitions. [2022-07-20 00:22:18,179 INFO L78 Accepts]: Start accepts. Automaton has 7150 states and 10476 transitions. Word has length 69 [2022-07-20 00:22:18,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:22:18,180 INFO L495 AbstractCegarLoop]: Abstraction has 7150 states and 10476 transitions. [2022-07-20 00:22:18,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-20 00:22:18,181 INFO L276 IsEmpty]: Start isEmpty. Operand 7150 states and 10476 transitions. [2022-07-20 00:22:18,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-20 00:22:18,183 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:22:18,183 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:22:18,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-20 00:22:18,183 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:22:18,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:22:18,184 INFO L85 PathProgramCache]: Analyzing trace with hash -2030980828, now seen corresponding path program 1 times [2022-07-20 00:22:18,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:22:18,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524459934] [2022-07-20 00:22:18,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:22:18,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:22:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:18,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:22:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:18,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:18,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:22:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:18,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-20 00:22:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:18,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:22:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:19,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:22:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:22:19,060 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-20 00:22:19,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:22:19,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524459934] [2022-07-20 00:22:19,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524459934] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:22:19,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:22:19,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-20 00:22:19,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649248746] [2022-07-20 00:22:19,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:22:19,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-20 00:22:19,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:22:19,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-20 00:22:19,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-07-20 00:22:19,064 INFO L87 Difference]: Start difference. First operand 7150 states and 10476 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-20 00:22:20,932 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:22,734 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:33,060 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:42,475 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:44,548 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:46,558 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:48,642 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:50,645 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:52,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:54,739 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:56,843 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:22:58,854 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:23:00,980 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:23:03,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:23:05,020 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:23:07,035 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:23:09,078 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:23:11,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:23:13,107 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:23:15,126 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:23:17,146 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:23:29,627 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:23:31,637 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:23:33,662 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:23:35,681 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:23:37,716 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:23:39,741 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:23:41,768 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:23:43,781 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:23:45,809 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:23:47,917 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:23:49,925 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:23:51,948 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:23:53,965 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:23:56,006 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:23:58,012 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:24:00,040 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:24:02,068 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:24:04,103 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []