./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.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 c3c8f5f42e93f38ff45b5fb218b90423c4fa8214795cc0db5e91266a2717c97b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 14:48:22,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:48:22,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:48:22,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:48:22,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:48:22,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:48:22,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:48:22,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:48:22,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:48:22,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:48:22,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:48:22,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:48:22,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:48:22,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:48:22,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:48:22,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:48:22,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:48:22,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:48:22,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:48:22,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:48:22,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:48:22,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:48:22,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:48:22,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:48:22,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:48:22,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:48:22,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:48:22,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:48:22,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:48:22,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:48:22,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:48:22,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:48:22,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:48:22,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:48:22,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:48:22,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:48:22,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:48:22,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:48:22,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:48:22,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:48:22,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:48:22,389 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:48:22,418 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:48:22,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:48:22,419 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:48:22,420 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:48:22,420 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:48:22,420 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:48:22,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:48:22,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:48:22,421 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:48:22,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:48:22,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:48:22,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:48:22,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:48:22,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:48:22,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:48:22,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:48:22,424 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:48:22,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:48:22,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:48:22,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:48:22,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:48:22,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:48:22,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:48:22,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:48:22,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:48:22,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:48:22,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:48:22,426 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:48:22,426 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:48:22,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:48:22,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:48:22,427 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3c8f5f42e93f38ff45b5fb218b90423c4fa8214795cc0db5e91266a2717c97b [2021-12-22 14:48:22,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:48:22,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:48:22,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:48:22,667 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:48:22,667 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:48:22,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2021-12-22 14:48:22,723 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/975a5b39d/b88031a03093479496e0762414fae481/FLAGb38d9228c [2021-12-22 14:48:23,303 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:48:23,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2021-12-22 14:48:23,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/975a5b39d/b88031a03093479496e0762414fae481/FLAGb38d9228c [2021-12-22 14:48:23,455 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/975a5b39d/b88031a03093479496e0762414fae481 [2021-12-22 14:48:23,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:48:23,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:48:23,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:48:23,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:48:23,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:48:23,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:48:23" (1/1) ... [2021-12-22 14:48:23,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c760248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:23, skipping insertion in model container [2021-12-22 14:48:23,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:48:23" (1/1) ... [2021-12-22 14:48:23,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:48:23,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:48:24,201 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-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i[98402,98415] [2021-12-22 14:48:24,805 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:48:24,837 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:48:24,929 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-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i[98402,98415] [2021-12-22 14:48:25,110 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:48:25,182 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:48:25,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:25 WrapperNode [2021-12-22 14:48:25,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:48:25,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:48:25,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:48:25,186 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:48:25,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:25" (1/1) ... [2021-12-22 14:48:25,287 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:25" (1/1) ... [2021-12-22 14:48:25,429 INFO L137 Inliner]: procedures = 256, calls = 2394, calls flagged for inlining = 116, calls inlined = 95, statements flattened = 3925 [2021-12-22 14:48:25,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:48:25,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:48:25,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:48:25,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:48:25,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:25" (1/1) ... [2021-12-22 14:48:25,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:25" (1/1) ... [2021-12-22 14:48:25,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:25" (1/1) ... [2021-12-22 14:48:25,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:25" (1/1) ... [2021-12-22 14:48:25,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:25" (1/1) ... [2021-12-22 14:48:25,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:25" (1/1) ... [2021-12-22 14:48:25,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:25" (1/1) ... [2021-12-22 14:48:25,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:48:25,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:48:25,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:48:25,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:48:25,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:25" (1/1) ... [2021-12-22 14:48:25,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:48:25,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:48:25,681 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) [2021-12-22 14:48:25,700 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 [2021-12-22 14:48:25,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-12-22 14:48:25,720 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-12-22 14:48:25,720 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-12-22 14:48:25,720 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-12-22 14:48:25,721 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-22 14:48:25,721 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-22 14:48:25,721 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-22 14:48:25,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 14:48:25,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 14:48:25,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-22 14:48:25,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-22 14:48:25,722 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2021-12-22 14:48:25,722 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2021-12-22 14:48:25,722 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-22 14:48:25,723 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-22 14:48:25,723 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2021-12-22 14:48:25,723 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2021-12-22 14:48:25,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:48:25,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:48:25,723 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2021-12-22 14:48:25,724 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2021-12-22 14:48:25,724 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2021-12-22 14:48:25,724 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2021-12-22 14:48:25,724 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 14:48:25,724 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 14:48:25,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:48:25,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:48:25,725 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2021-12-22 14:48:25,725 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2021-12-22 14:48:25,725 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2021-12-22 14:48:25,725 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2021-12-22 14:48:25,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_imon_context [2021-12-22 14:48:25,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_imon_context [2021-12-22 14:48:25,726 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 14:48:25,726 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 14:48:25,726 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-22 14:48:25,726 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-22 14:48:25,727 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-22 14:48:25,727 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-22 14:48:25,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_driver_lock [2021-12-22 14:48:25,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_driver_lock [2021-12-22 14:48:25,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:48:25,727 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-12-22 14:48:25,728 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-12-22 14:48:25,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:48:25,728 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2021-12-22 14:48:25,728 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2021-12-22 14:48:25,728 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2021-12-22 14:48:25,729 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2021-12-22 14:48:25,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:48:25,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:48:25,729 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-22 14:48:25,729 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-22 14:48:25,729 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-22 14:48:25,730 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-22 14:48:25,730 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-22 14:48:25,730 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-22 14:48:25,731 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2021-12-22 14:48:25,731 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2021-12-22 14:48:25,732 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2021-12-22 14:48:25,732 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2021-12-22 14:48:25,732 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-22 14:48:25,732 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-22 14:48:25,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 14:48:25,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-22 14:48:25,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-22 14:48:25,733 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-22 14:48:25,733 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-22 14:48:25,733 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2021-12-22 14:48:25,733 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2021-12-22 14:48:25,733 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-22 14:48:25,734 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-22 14:48:25,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 14:48:25,734 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2021-12-22 14:48:25,734 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2021-12-22 14:48:25,735 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2021-12-22 14:48:25,735 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2021-12-22 14:48:25,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:48:25,735 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-22 14:48:25,735 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-22 14:48:25,735 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-12-22 14:48:25,736 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-12-22 14:48:25,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-22 14:48:25,736 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-22 14:48:25,736 INFO L130 BoogieDeclarations]: Found specification of procedure lcd_write [2021-12-22 14:48:25,736 INFO L138 BoogieDeclarations]: Found implementation of procedure lcd_write [2021-12-22 14:48:25,736 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-22 14:48:25,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-22 14:48:25,737 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-22 14:48:25,737 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-22 14:48:25,737 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2021-12-22 14:48:25,737 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2021-12-22 14:48:25,737 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 14:48:25,738 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 14:48:25,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:48:25,738 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2021-12-22 14:48:25,739 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2021-12-22 14:48:25,739 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2021-12-22 14:48:25,739 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2021-12-22 14:48:25,739 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2021-12-22 14:48:25,740 INFO L138 BoogieDeclarations]: Found implementation of procedure noop_llseek [2021-12-22 14:48:25,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 14:48:25,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 14:48:25,740 INFO L130 BoogieDeclarations]: Found specification of procedure free_imon_context [2021-12-22 14:48:25,740 INFO L138 BoogieDeclarations]: Found implementation of procedure free_imon_context [2021-12-22 14:48:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:48:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2021-12-22 14:48:25,741 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2021-12-22 14:48:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2021-12-22 14:48:25,741 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2021-12-22 14:48:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_imon_context [2021-12-22 14:48:25,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_imon_context [2021-12-22 14:48:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-22 14:48:25,742 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-22 14:48:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:48:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure vfd_write [2021-12-22 14:48:25,743 INFO L138 BoogieDeclarations]: Found implementation of procedure vfd_write [2021-12-22 14:48:25,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:48:25,744 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2021-12-22 14:48:25,746 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2021-12-22 14:48:25,746 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-22 14:48:25,746 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-12-22 14:48:25,746 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-12-22 14:48:25,747 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2021-12-22 14:48:25,749 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2021-12-22 14:48:25,749 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2021-12-22 14:48:25,749 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2021-12-22 14:48:25,749 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-22 14:48:25,754 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-22 14:48:25,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_driver_lock [2021-12-22 14:48:25,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_driver_lock [2021-12-22 14:48:25,755 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2021-12-22 14:48:25,755 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2021-12-22 14:48:25,755 INFO L130 BoogieDeclarations]: Found specification of procedure imon_find_endpoints [2021-12-22 14:48:25,755 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_find_endpoints [2021-12-22 14:48:25,755 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2021-12-22 14:48:25,755 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2021-12-22 14:48:25,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:48:25,756 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-12-22 14:48:25,756 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-12-22 14:48:25,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:48:25,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:48:26,371 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:48:26,374 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:48:26,708 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-22 14:48:30,690 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:48:30,701 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:48:30,702 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 14:48:30,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:48:30 BoogieIcfgContainer [2021-12-22 14:48:30,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:48:30,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:48:30,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:48:30,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:48:30,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:48:23" (1/3) ... [2021-12-22 14:48:30,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627deaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:48:30, skipping insertion in model container [2021-12-22 14:48:30,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:48:25" (2/3) ... [2021-12-22 14:48:30,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627deaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:48:30, skipping insertion in model container [2021-12-22 14:48:30,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:48:30" (3/3) ... [2021-12-22 14:48:30,710 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2021-12-22 14:48:30,714 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:48:30,714 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:48:30,754 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:48:30,759 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 14:48:30,760 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:48:30,790 INFO L276 IsEmpty]: Start isEmpty. Operand has 1108 states, 771 states have (on average 1.3540856031128405) internal successors, (1044), 793 states have internal predecessors, (1044), 274 states have call successors, (274), 62 states have call predecessors, (274), 61 states have return successors, (267), 266 states have call predecessors, (267), 267 states have call successors, (267) [2021-12-22 14:48:30,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-22 14:48:30,798 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:48:30,799 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:48:30,799 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:48:30,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:48:30,803 INFO L85 PathProgramCache]: Analyzing trace with hash -958231293, now seen corresponding path program 1 times [2021-12-22 14:48:30,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:48:30,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873470807] [2021-12-22 14:48:30,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:48:30,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:48:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:31,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:48:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:31,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:48:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:31,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:48:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:31,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:48:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:31,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:48:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:31,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:48:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:31,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:48:31,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:31,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:48:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:31,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:48:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:31,468 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-22 14:48:31,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:48:31,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873470807] [2021-12-22 14:48:31,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873470807] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:48:31,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:48:31,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:48:31,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567317225] [2021-12-22 14:48:31,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:48:31,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:48:31,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:48:31,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:48:31,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:48:31,508 INFO L87 Difference]: Start difference. First operand has 1108 states, 771 states have (on average 1.3540856031128405) internal successors, (1044), 793 states have internal predecessors, (1044), 274 states have call successors, (274), 62 states have call predecessors, (274), 61 states have return successors, (267), 266 states have call predecessors, (267), 267 states have call successors, (267) Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-22 14:48:35,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:48:35,590 INFO L93 Difference]: Finished difference Result 3294 states and 4962 transitions. [2021-12-22 14:48:35,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:48:35,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 72 [2021-12-22 14:48:35,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:48:35,617 INFO L225 Difference]: With dead ends: 3294 [2021-12-22 14:48:35,618 INFO L226 Difference]: Without dead ends: 2166 [2021-12-22 14:48:35,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:48:35,633 INFO L933 BasicCegarLoop]: 1775 mSDtfsCounter, 1601 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1803 SdHoareTripleChecker+Valid, 3888 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:48:35,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1803 Valid, 3888 Invalid, 1501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-12-22 14:48:35,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2021-12-22 14:48:35,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 2078. [2021-12-22 14:48:35,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2078 states, 1458 states have (on average 1.3415637860082306) internal successors, (1956), 1479 states have internal predecessors, (1956), 500 states have call successors, (500), 120 states have call predecessors, (500), 119 states have return successors, (493), 490 states have call predecessors, (493), 493 states have call successors, (493) [2021-12-22 14:48:35,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 2949 transitions. [2021-12-22 14:48:35,799 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 2949 transitions. Word has length 72 [2021-12-22 14:48:35,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:48:35,800 INFO L470 AbstractCegarLoop]: Abstraction has 2078 states and 2949 transitions. [2021-12-22 14:48:35,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-22 14:48:35,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 2949 transitions. [2021-12-22 14:48:35,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-22 14:48:35,807 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:48:35,807 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:48:35,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:48:35,808 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:48:35,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:48:35,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1149281951, now seen corresponding path program 1 times [2021-12-22 14:48:35,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:48:35,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335773584] [2021-12-22 14:48:35,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:48:35,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:48:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:35,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:48:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:35,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:48:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:35,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:48:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:35,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:48:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:36,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:48:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:36,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:48:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:36,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:48:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:36,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:48:36,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:36,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:48:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:36,061 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-22 14:48:36,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:48:36,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335773584] [2021-12-22 14:48:36,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335773584] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:48:36,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:48:36,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:48:36,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993865878] [2021-12-22 14:48:36,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:48:36,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:48:36,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:48:36,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:48:36,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:48:36,065 INFO L87 Difference]: Start difference. First operand 2078 states and 2949 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-22 14:48:39,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:48:39,557 INFO L93 Difference]: Finished difference Result 5218 states and 7472 transitions. [2021-12-22 14:48:39,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:48:39,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 73 [2021-12-22 14:48:39,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:48:39,575 INFO L225 Difference]: With dead ends: 5218 [2021-12-22 14:48:39,575 INFO L226 Difference]: Without dead ends: 3163 [2021-12-22 14:48:39,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:48:39,583 INFO L933 BasicCegarLoop]: 1728 mSDtfsCounter, 939 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 3852 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:48:39,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1039 Valid, 3852 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-22 14:48:39,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3163 states. [2021-12-22 14:48:39,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3163 to 3033. [2021-12-22 14:48:39,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 2140 states have (on average 1.347663551401869) internal successors, (2884), 2161 states have internal predecessors, (2884), 707 states have call successors, (707), 186 states have call predecessors, (707), 185 states have return successors, (700), 697 states have call predecessors, (700), 700 states have call successors, (700) [2021-12-22 14:48:39,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 4291 transitions. [2021-12-22 14:48:39,705 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 4291 transitions. Word has length 73 [2021-12-22 14:48:39,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:48:39,706 INFO L470 AbstractCegarLoop]: Abstraction has 3033 states and 4291 transitions. [2021-12-22 14:48:39,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-22 14:48:39,706 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 4291 transitions. [2021-12-22 14:48:39,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-22 14:48:39,707 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:48:39,708 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:48:39,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:48:39,708 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:48:39,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:48:39,709 INFO L85 PathProgramCache]: Analyzing trace with hash -2117811177, now seen corresponding path program 1 times [2021-12-22 14:48:39,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:48:39,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239109202] [2021-12-22 14:48:39,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:48:39,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:48:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:39,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:48:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:39,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:48:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:39,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:48:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:39,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:48:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:39,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:48:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:39,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:48:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:39,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:48:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:39,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:48:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:39,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:48:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:39,915 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-22 14:48:39,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:48:39,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239109202] [2021-12-22 14:48:39,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239109202] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:48:39,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:48:39,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:48:39,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044357896] [2021-12-22 14:48:39,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:48:39,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:48:39,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:48:39,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:48:39,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:48:39,917 INFO L87 Difference]: Start difference. First operand 3033 states and 4291 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-22 14:48:44,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:48:44,508 INFO L93 Difference]: Finished difference Result 9200 states and 13168 transitions. [2021-12-22 14:48:44,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:48:44,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 74 [2021-12-22 14:48:44,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:48:44,541 INFO L225 Difference]: With dead ends: 9200 [2021-12-22 14:48:44,541 INFO L226 Difference]: Without dead ends: 6197 [2021-12-22 14:48:44,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:48:44,556 INFO L933 BasicCegarLoop]: 1858 mSDtfsCounter, 1600 mSDsluCounter, 2183 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 578 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 4041 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 578 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:48:44,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1796 Valid, 4041 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [578 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-12-22 14:48:44,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6197 states. [2021-12-22 14:48:44,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6197 to 5963. [2021-12-22 14:48:44,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5963 states, 4212 states have (on average 1.3480531813865146) internal successors, (5678), 4247 states have internal predecessors, (5678), 1381 states have call successors, (1381), 370 states have call predecessors, (1381), 369 states have return successors, (1374), 1369 states have call predecessors, (1374), 1374 states have call successors, (1374) [2021-12-22 14:48:44,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5963 states to 5963 states and 8433 transitions. [2021-12-22 14:48:44,802 INFO L78 Accepts]: Start accepts. Automaton has 5963 states and 8433 transitions. Word has length 74 [2021-12-22 14:48:44,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:48:44,803 INFO L470 AbstractCegarLoop]: Abstraction has 5963 states and 8433 transitions. [2021-12-22 14:48:44,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-22 14:48:44,803 INFO L276 IsEmpty]: Start isEmpty. Operand 5963 states and 8433 transitions. [2021-12-22 14:48:44,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-22 14:48:44,808 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:48:44,808 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:48:44,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:48:44,808 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:48:44,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:48:44,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1121570177, now seen corresponding path program 1 times [2021-12-22 14:48:44,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:48:44,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10787725] [2021-12-22 14:48:44,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:48:44,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:48:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:44,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:48:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:44,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:48:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:45,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:48:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:45,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:48:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:45,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:48:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:45,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:48:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:45,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:48:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:45,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:48:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:45,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:48:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:45,049 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-22 14:48:45,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:48:45,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10787725] [2021-12-22 14:48:45,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10787725] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:48:45,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:48:45,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:48:45,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647117812] [2021-12-22 14:48:45,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:48:45,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:48:45,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:48:45,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:48:45,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:48:45,053 INFO L87 Difference]: Start difference. First operand 5963 states and 8433 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-22 14:48:49,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:48:49,063 INFO L93 Difference]: Finished difference Result 17466 states and 24920 transitions. [2021-12-22 14:48:49,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:48:49,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 78 [2021-12-22 14:48:49,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:48:49,128 INFO L225 Difference]: With dead ends: 17466 [2021-12-22 14:48:49,129 INFO L226 Difference]: Without dead ends: 11533 [2021-12-22 14:48:49,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:48:49,157 INFO L933 BasicCegarLoop]: 1936 mSDtfsCounter, 1561 mSDsluCounter, 2187 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1757 SdHoareTripleChecker+Valid, 4123 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-22 14:48:49,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1757 Valid, 4123 Invalid, 1465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-22 14:48:49,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11533 states. [2021-12-22 14:48:49,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11533 to 11077. [2021-12-22 14:48:49,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11077 states, 7860 states have (on average 1.3465648854961831) internal successors, (10584), 7923 states have internal predecessors, (10584), 2521 states have call successors, (2521), 696 states have call predecessors, (2521), 695 states have return successors, (2514), 2505 states have call predecessors, (2514), 2514 states have call successors, (2514) [2021-12-22 14:48:49,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11077 states to 11077 states and 15619 transitions. [2021-12-22 14:48:49,594 INFO L78 Accepts]: Start accepts. Automaton has 11077 states and 15619 transitions. Word has length 78 [2021-12-22 14:48:49,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:48:49,595 INFO L470 AbstractCegarLoop]: Abstraction has 11077 states and 15619 transitions. [2021-12-22 14:48:49,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-22 14:48:49,596 INFO L276 IsEmpty]: Start isEmpty. Operand 11077 states and 15619 transitions. [2021-12-22 14:48:49,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-22 14:48:49,597 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:48:49,597 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:48:49,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 14:48:49,598 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:48:49,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:48:49,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1933438737, now seen corresponding path program 1 times [2021-12-22 14:48:49,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:48:49,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523467115] [2021-12-22 14:48:49,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:48:49,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:48:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:49,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:48:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:49,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:48:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:49,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:48:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:49,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:48:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:49,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:48:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:49,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:48:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:49,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:48:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:49,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:48:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:49,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:48:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:49,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 14:48:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:49,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:48:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-22 14:48:49,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:48:49,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523467115] [2021-12-22 14:48:49,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523467115] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:48:49,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:48:49,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:48:49,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101526561] [2021-12-22 14:48:49,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:48:49,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:48:49,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:48:49,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:48:49,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:48:49,947 INFO L87 Difference]: Start difference. First operand 11077 states and 15619 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-22 14:48:54,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:48:54,702 INFO L93 Difference]: Finished difference Result 33076 states and 46844 transitions. [2021-12-22 14:48:54,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:48:54,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 85 [2021-12-22 14:48:54,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:48:54,886 INFO L225 Difference]: With dead ends: 33076 [2021-12-22 14:48:54,886 INFO L226 Difference]: Without dead ends: 22029 [2021-12-22 14:48:54,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:48:54,928 INFO L933 BasicCegarLoop]: 1983 mSDtfsCounter, 1566 mSDsluCounter, 3241 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1782 SdHoareTripleChecker+Valid, 5224 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:48:54,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1782 Valid, 5224 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [569 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-12-22 14:48:54,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22029 states. [2021-12-22 14:48:55,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22029 to 21003. [2021-12-22 14:48:55,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21003 states, 14802 states have (on average 1.3364410214835833) internal successors, (19782), 14923 states have internal predecessors, (19782), 4811 states have call successors, (4811), 1390 states have call predecessors, (4811), 1389 states have return successors, (4804), 4785 states have call predecessors, (4804), 4804 states have call successors, (4804) [2021-12-22 14:48:55,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21003 states to 21003 states and 29397 transitions. [2021-12-22 14:48:55,677 INFO L78 Accepts]: Start accepts. Automaton has 21003 states and 29397 transitions. Word has length 85 [2021-12-22 14:48:55,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:48:55,678 INFO L470 AbstractCegarLoop]: Abstraction has 21003 states and 29397 transitions. [2021-12-22 14:48:55,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-22 14:48:55,678 INFO L276 IsEmpty]: Start isEmpty. Operand 21003 states and 29397 transitions. [2021-12-22 14:48:55,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-22 14:48:55,682 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:48:55,682 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:48:55,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 14:48:55,682 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:48:55,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:48:55,683 INFO L85 PathProgramCache]: Analyzing trace with hash -531508727, now seen corresponding path program 1 times [2021-12-22 14:48:55,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:48:55,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260768700] [2021-12-22 14:48:55,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:48:55,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:48:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:55,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:48:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:55,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:48:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:55,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:48:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:55,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:48:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:55,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:48:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:55,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:48:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:55,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:48:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:55,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:48:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:55,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:48:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:55,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-22 14:48:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:55,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:48:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:55,890 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-22 14:48:55,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:48:55,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260768700] [2021-12-22 14:48:55,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260768700] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:48:55,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:48:55,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:48:55,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188949694] [2021-12-22 14:48:55,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:48:55,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:48:55,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:48:55,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:48:55,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:48:55,893 INFO L87 Difference]: Start difference. First operand 21003 states and 29397 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-22 14:48:58,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:48:58,890 INFO L93 Difference]: Finished difference Result 63106 states and 88865 transitions. [2021-12-22 14:48:58,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:48:58,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 87 [2021-12-22 14:48:58,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:48:59,067 INFO L225 Difference]: With dead ends: 63106 [2021-12-22 14:48:59,067 INFO L226 Difference]: Without dead ends: 42133 [2021-12-22 14:48:59,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:48:59,135 INFO L933 BasicCegarLoop]: 2110 mSDtfsCounter, 1842 mSDsluCounter, 2444 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 1005 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 4554 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1005 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:48:59,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2058 Valid, 4554 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1005 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-22 14:48:59,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42133 states. [2021-12-22 14:49:00,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42133 to 40181. [2021-12-22 14:49:00,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40181 states, 28389 states have (on average 1.3354820529078164) internal successors, (37913), 28626 states have internal predecessors, (37913), 9077 states have call successors, (9077), 2715 states have call predecessors, (9077), 2714 states have return successors, (9070), 9031 states have call predecessors, (9070), 9070 states have call successors, (9070) [2021-12-22 14:49:00,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40181 states to 40181 states and 56060 transitions. [2021-12-22 14:49:00,586 INFO L78 Accepts]: Start accepts. Automaton has 40181 states and 56060 transitions. Word has length 87 [2021-12-22 14:49:00,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:49:00,726 INFO L470 AbstractCegarLoop]: Abstraction has 40181 states and 56060 transitions. [2021-12-22 14:49:00,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-22 14:49:00,726 INFO L276 IsEmpty]: Start isEmpty. Operand 40181 states and 56060 transitions. [2021-12-22 14:49:00,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-22 14:49:00,727 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:49:00,727 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:49:00,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 14:49:00,728 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:49:00,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:49:00,728 INFO L85 PathProgramCache]: Analyzing trace with hash 835779799, now seen corresponding path program 1 times [2021-12-22 14:49:00,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:49:00,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458950413] [2021-12-22 14:49:00,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:49:00,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:49:00,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:49:00,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:49:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:49:00,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:49:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:49:00,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:49:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:49:00,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:49:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:49:00,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:49:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:49:00,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:49:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:49:00,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:49:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:49:00,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:49:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:49:00,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:49:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:49:01,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 14:49:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:49:01,018 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-22 14:49:01,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:49:01,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458950413] [2021-12-22 14:49:01,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458950413] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:49:01,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:49:01,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:49:01,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557404081] [2021-12-22 14:49:01,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:49:01,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:49:01,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:49:01,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:49:01,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:49:01,020 INFO L87 Difference]: Start difference. First operand 40181 states and 56060 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-22 14:49:05,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:49:05,091 INFO L93 Difference]: Finished difference Result 48243 states and 66226 transitions. [2021-12-22 14:49:05,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:49:05,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2021-12-22 14:49:05,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:49:05,343 INFO L225 Difference]: With dead ends: 48243 [2021-12-22 14:49:05,344 INFO L226 Difference]: Without dead ends: 48239 [2021-12-22 14:49:05,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:49:05,366 INFO L933 BasicCegarLoop]: 1580 mSDtfsCounter, 1012 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 2992 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:49:05,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1115 Valid, 2992 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-22 14:49:05,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48239 states. [2021-12-22 14:49:06,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48239 to 45717. [2021-12-22 14:49:06,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45717 states, 32283 states have (on average 1.318031161911842) internal successors, (42550), 32518 states have internal predecessors, (42550), 9845 states have call successors, (9845), 3589 states have call predecessors, (9845), 3588 states have return successors, (9840), 9801 states have call predecessors, (9840), 9840 states have call successors, (9840) [2021-12-22 14:49:07,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45717 states to 45717 states and 62235 transitions. [2021-12-22 14:49:07,123 INFO L78 Accepts]: Start accepts. Automaton has 45717 states and 62235 transitions. Word has length 86 [2021-12-22 14:49:07,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:49:07,124 INFO L470 AbstractCegarLoop]: Abstraction has 45717 states and 62235 transitions. [2021-12-22 14:49:07,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-22 14:49:07,124 INFO L276 IsEmpty]: Start isEmpty. Operand 45717 states and 62235 transitions. [2021-12-22 14:49:07,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-22 14:49:07,125 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:49:07,126 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:49:07,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 14:49:07,126 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:49:07,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:49:07,127 INFO L85 PathProgramCache]: Analyzing trace with hash 138844034, now seen corresponding path program 1 times [2021-12-22 14:49:07,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:49:07,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825874586] [2021-12-22 14:49:07,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:49:07,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:49:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:49:07,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:49:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:49:07,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:49:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:49:07,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:49:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:49:07,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:49:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:49:07,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:49:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:49:07,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:49:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:49:07,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:49:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:49:07,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:49:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:49:07,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 14:49:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:49:07,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 14:49:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:49:07,546 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-22 14:49:07,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:49:07,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825874586] [2021-12-22 14:49:07,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825874586] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:49:07,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:49:07,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:49:07,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235117446] [2021-12-22 14:49:07,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:49:07,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:49:07,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:49:07,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:49:07,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:49:07,549 INFO L87 Difference]: Start difference. First operand 45717 states and 62235 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-22 14:49:11,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:49:11,785 INFO L93 Difference]: Finished difference Result 114799 states and 156015 transitions. [2021-12-22 14:49:11,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:49:11,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2021-12-22 14:49:11,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:49:12,088 INFO L225 Difference]: With dead ends: 114799 [2021-12-22 14:49:12,088 INFO L226 Difference]: Without dead ends: 69116 [2021-12-22 14:49:12,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:49:12,194 INFO L933 BasicCegarLoop]: 1705 mSDtfsCounter, 964 mSDsluCounter, 1958 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 3663 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:49:12,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1070 Valid, 3663 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-22 14:49:12,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69116 states. [2021-12-22 14:49:13,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69116 to 64301. [2021-12-22 14:49:13,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64301 states, 45440 states have (on average 1.312411971830986) internal successors, (59636), 46078 states have internal predecessors, (59636), 13401 states have call successors, (13401), 5609 states have call predecessors, (13401), 5459 states have return successors, (13650), 12869 states have call predecessors, (13650), 13394 states have call successors, (13650)