./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.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 275849fbaca37e76eea790df33e2de383489441cc01df773179ecf6c76094336 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 01:49:23,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 01:49:23,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 01:49:23,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 01:49:23,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 01:49:23,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 01:49:23,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 01:49:23,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 01:49:23,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 01:49:23,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 01:49:23,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 01:49:23,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 01:49:23,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 01:49:23,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 01:49:23,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 01:49:23,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 01:49:23,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 01:49:23,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 01:49:23,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 01:49:23,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 01:49:23,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 01:49:23,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 01:49:23,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 01:49:23,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 01:49:23,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 01:49:23,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 01:49:23,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 01:49:23,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 01:49:23,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 01:49:23,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 01:49:23,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 01:49:23,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 01:49:23,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 01:49:23,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 01:49:23,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 01:49:23,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 01:49:23,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 01:49:23,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 01:49:23,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 01:49:23,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 01:49:23,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 01:49:23,089 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 01:49:23,112 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 01:49:23,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 01:49:23,113 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 01:49:23,113 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 01:49:23,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 01:49:23,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 01:49:23,115 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 01:49:23,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 01:49:23,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 01:49:23,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 01:49:23,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 01:49:23,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 01:49:23,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 01:49:23,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 01:49:23,116 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 01:49:23,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 01:49:23,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 01:49:23,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 01:49:23,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 01:49:23,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 01:49:23,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 01:49:23,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 01:49:23,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 01:49:23,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 01:49:23,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 01:49:23,118 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 01:49:23,118 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 01:49:23,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 01:49:23,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 01:49:23,119 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 275849fbaca37e76eea790df33e2de383489441cc01df773179ecf6c76094336 [2021-11-04 01:49:23,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 01:49:23,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 01:49:23,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 01:49:23,316 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 01:49:23,316 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 01:49:23,317 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i [2021-11-04 01:49:23,406 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d3a14297/5549e9adb61b4c62ad11a0ea29dd4138/FLAG55110f000 [2021-11-04 01:49:23,917 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 01:49:23,917 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i [2021-11-04 01:49:23,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d3a14297/5549e9adb61b4c62ad11a0ea29dd4138/FLAG55110f000 [2021-11-04 01:49:24,344 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d3a14297/5549e9adb61b4c62ad11a0ea29dd4138 [2021-11-04 01:49:24,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 01:49:24,347 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 01:49:24,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 01:49:24,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 01:49:24,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 01:49:24,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 01:49:24" (1/1) ... [2021-11-04 01:49:24,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b523826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 01:49:24, skipping insertion in model container [2021-11-04 01:49:24,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 01:49:24" (1/1) ... [2021-11-04 01:49:24,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 01:49:24,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 01:49:25,096 WARN L228 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-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i[158757,158770] [2021-11-04 01:49:25,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 01:49:25,133 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 01:49:25,320 WARN L228 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-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i[158757,158770] [2021-11-04 01:49:25,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 01:49:25,362 INFO L208 MainTranslator]: Completed translation [2021-11-04 01:49:25,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 01:49:25 WrapperNode [2021-11-04 01:49:25,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 01:49:25,363 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 01:49:25,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 01:49:25,364 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 01:49:25,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 01:49:25" (1/1) ... [2021-11-04 01:49:25,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 01:49:25" (1/1) ... [2021-11-04 01:49:26,464 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 01:49:26,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 01:49:26,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 01:49:26,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 01:49:26,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 01:49:25" (1/1) ... [2021-11-04 01:49:26,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 01:49:25" (1/1) ... [2021-11-04 01:49:26,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 01:49:25" (1/1) ... [2021-11-04 01:49:26,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 01:49:25" (1/1) ... [2021-11-04 01:49:27,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 01:49:25" (1/1) ... [2021-11-04 01:49:27,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 01:49:25" (1/1) ... [2021-11-04 01:49:28,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 01:49:25" (1/1) ... [2021-11-04 01:49:28,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 01:49:28,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 01:49:28,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 01:49:28,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 01:49:28,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 01:49:25" (1/1) ... [2021-11-04 01:49:28,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 01:49:28,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 01:49:28,452 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) [2021-11-04 01:49:28,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 01:49:28,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 01:49:28,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 01:49:28,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 01:49:28,477 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2021-11-04 01:49:28,477 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2021-11-04 01:49:28,477 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2021-11-04 01:49:28,478 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2021-11-04 01:49:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 01:49:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2021-11-04 01:49:28,478 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2021-11-04 01:49:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 01:49:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-04 01:49:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2021-11-04 01:49:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 01:49:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 01:49:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 01:49:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2021-11-04 01:49:28,479 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 [2021-11-04 01:49:28,482 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2021-11-04 01:49:28,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 01:49:28,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 01:49:28,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 01:49:28,483 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2021-11-04 01:49:28,483 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2021-11-04 01:49:28,483 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-04 01:49:28,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-04 01:49:28,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 01:49:28,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 01:49:28,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 01:49:28,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 01:49:57,876 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 01:49:57,876 INFO L299 CfgBuilder]: Removed 13433 assume(true) statements. [2021-11-04 01:49:57,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 01:49:57 BoogieIcfgContainer [2021-11-04 01:49:57,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 01:49:57,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 01:49:57,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 01:49:57,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 01:49:57,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 01:49:24" (1/3) ... [2021-11-04 01:49:57,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a205e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 01:49:57, skipping insertion in model container [2021-11-04 01:49:57,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 01:49:25" (2/3) ... [2021-11-04 01:49:57,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a205e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 01:49:57, skipping insertion in model container [2021-11-04 01:49:57,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 01:49:57" (3/3) ... [2021-11-04 01:49:57,897 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i [2021-11-04 01:49:57,901 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 01:49:57,902 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-04 01:49:57,967 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 01:49:57,974 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 [2021-11-04 01:49:57,975 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-04 01:49:58,104 INFO L276 IsEmpty]: Start isEmpty. Operand has 11338 states, 11302 states have (on average 1.423376393558662) internal successors, (16087), 11321 states have internal predecessors, (16087), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-04 01:49:58,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-04 01:49:58,107 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 01:49:58,108 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 01:49:58,108 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-04 01:49:58,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 01:49:58,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1003863478, now seen corresponding path program 1 times [2021-11-04 01:49:58,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 01:49:58,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140014707] [2021-11-04 01:49:58,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 01:49:58,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 01:49:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 01:49:58,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 01:49:58,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 01:49:58,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140014707] [2021-11-04 01:49:58,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140014707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 01:49:58,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 01:49:58,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 01:49:58,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185383262] [2021-11-04 01:49:58,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 01:49:58,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 01:49:58,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 01:49:58,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 01:49:58,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 01:49:58,765 INFO L87 Difference]: Start difference. First operand has 11338 states, 11302 states have (on average 1.423376393558662) internal successors, (16087), 11321 states have internal predecessors, (16087), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 01:50:00,829 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 01:50:37,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 01:50:37,541 INFO L93 Difference]: Finished difference Result 29868 states and 41662 transitions. [2021-11-04 01:50:37,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 01:50:37,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-04 01:50:37,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 01:50:37,629 INFO L225 Difference]: With dead ends: 29868 [2021-11-04 01:50:37,630 INFO L226 Difference]: Without dead ends: 18529 [2021-11-04 01:50:37,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.09ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 01:50:37,690 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 12713 mSDsluCounter, 12630 mSDsCounter, 0 mSdLazyCounter, 25318 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32842.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12713 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 25331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 74.88ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 25318 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37432.81ms IncrementalHoareTripleChecker+Time [2021-11-04 01:50:37,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12713 Valid, 52 Invalid, 25331 Unknown, 0 Unchecked, 74.88ms Time], IncrementalHoareTripleChecker [12 Valid, 25318 Invalid, 1 Unknown, 0 Unchecked, 37432.81ms Time] [2021-11-04 01:50:37,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18529 states. [2021-11-04 01:50:38,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18529 to 18523. [2021-11-04 01:50:38,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18523 states, 18479 states have (on average 1.3693381676497647) internal successors, (25304), 18490 states have internal predecessors, (25304), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-04 01:50:38,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18523 states to 18523 states and 25344 transitions. [2021-11-04 01:50:38,208 INFO L78 Accepts]: Start accepts. Automaton has 18523 states and 25344 transitions. Word has length 8 [2021-11-04 01:50:38,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 01:50:38,209 INFO L470 AbstractCegarLoop]: Abstraction has 18523 states and 25344 transitions. [2021-11-04 01:50:38,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 01:50:38,210 INFO L276 IsEmpty]: Start isEmpty. Operand 18523 states and 25344 transitions. [2021-11-04 01:50:38,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-04 01:50:38,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 01:50:38,211 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 01:50:38,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 01:50:38,212 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-04 01:50:38,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 01:50:38,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1055016019, now seen corresponding path program 1 times [2021-11-04 01:50:38,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 01:50:38,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073531701] [2021-11-04 01:50:38,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 01:50:38,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 01:50:38,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 01:50:38,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 01:50:38,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 01:50:38,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073531701] [2021-11-04 01:50:38,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073531701] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 01:50:38,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 01:50:38,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 01:50:38,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551637372] [2021-11-04 01:50:38,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 01:50:38,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 01:50:38,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 01:50:38,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 01:50:38,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 01:50:38,371 INFO L87 Difference]: Start difference. First operand 18523 states and 25344 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 01:50:40,407 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 01:51:17,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 01:51:17,007 INFO L93 Difference]: Finished difference Result 46242 states and 63288 transitions. [2021-11-04 01:51:17,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 01:51:17,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-04 01:51:17,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 01:51:17,149 INFO L225 Difference]: With dead ends: 46242 [2021-11-04 01:51:17,149 INFO L226 Difference]: Without dead ends: 37009 [2021-11-04 01:51:17,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 01:51:17,185 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 12700 mSDsluCounter, 12677 mSDsCounter, 0 mSdLazyCounter, 25360 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32414.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12700 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 25369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 52.14ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 25360 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37596.57ms IncrementalHoareTripleChecker+Time [2021-11-04 01:51:17,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12700 Valid, 50 Invalid, 25369 Unknown, 0 Unchecked, 52.14ms Time], IncrementalHoareTripleChecker [8 Valid, 25360 Invalid, 1 Unknown, 0 Unchecked, 37596.57ms Time] [2021-11-04 01:51:17,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37009 states. [2021-11-04 01:51:17,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37009 to 27787. [2021-11-04 01:51:17,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27787 states, 27728 states have (on average 1.3692296595499134) internal successors, (37966), 27738 states have internal predecessors, (37966), 30 states have call successors, (30), 18 states have call predecessors, (30), 18 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-04 01:51:17,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27787 states to 27787 states and 38026 transitions. [2021-11-04 01:51:17,790 INFO L78 Accepts]: Start accepts. Automaton has 27787 states and 38026 transitions. Word has length 9 [2021-11-04 01:51:17,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 01:51:17,791 INFO L470 AbstractCegarLoop]: Abstraction has 27787 states and 38026 transitions. [2021-11-04 01:51:17,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 01:51:17,791 INFO L276 IsEmpty]: Start isEmpty. Operand 27787 states and 38026 transitions. [2021-11-04 01:51:17,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-04 01:51:17,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 01:51:17,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 01:51:17,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 01:51:17,792 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-04 01:51:17,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 01:51:17,793 INFO L85 PathProgramCache]: Analyzing trace with hash 746265207, now seen corresponding path program 1 times [2021-11-04 01:51:17,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 01:51:17,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809215722] [2021-11-04 01:51:17,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 01:51:17,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 01:51:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 01:51:17,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 01:51:17,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 01:51:17,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809215722] [2021-11-04 01:51:17,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809215722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 01:51:17,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 01:51:17,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 01:51:17,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107957229] [2021-11-04 01:51:17,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 01:51:17,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 01:51:17,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 01:51:17,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 01:51:17,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 01:51:17,934 INFO L87 Difference]: Start difference. First operand 27787 states and 38026 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 01:51:19,970 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 01:52:41,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 01:52:41,055 INFO L93 Difference]: Finished difference Result 64742 states and 88619 transitions. [2021-11-04 01:52:41,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 01:52:41,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-04 01:52:41,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 01:52:41,212 INFO L225 Difference]: With dead ends: 64742 [2021-11-04 01:52:41,212 INFO L226 Difference]: Without dead ends: 55505 [2021-11-04 01:52:41,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.07ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 01:52:41,260 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 12691 mSDsluCounter, 12665 mSDsCounter, 0 mSdLazyCounter, 25344 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72398.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12691 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 25351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 88.78ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25344 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81217.72ms IncrementalHoareTripleChecker+Time [2021-11-04 01:52:41,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12691 Valid, 50 Invalid, 25351 Unknown, 0 Unchecked, 88.78ms Time], IncrementalHoareTripleChecker [6 Valid, 25344 Invalid, 1 Unknown, 0 Unchecked, 81217.72ms Time] [2021-11-04 01:52:41,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55505 states. [2021-11-04 01:52:42,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55505 to 27844. [2021-11-04 01:52:42,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27844 states, 27786 states have (on average 1.3688548189735839) internal successors, (38035), 27795 states have internal predecessors, (38035), 30 states have call successors, (30), 18 states have call predecessors, (30), 18 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-04 01:52:42,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27844 states to 27844 states and 38095 transitions. [2021-11-04 01:52:42,174 INFO L78 Accepts]: Start accepts. Automaton has 27844 states and 38095 transitions. Word has length 18 [2021-11-04 01:52:42,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 01:52:42,174 INFO L470 AbstractCegarLoop]: Abstraction has 27844 states and 38095 transitions. [2021-11-04 01:52:42,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 01:52:42,175 INFO L276 IsEmpty]: Start isEmpty. Operand 27844 states and 38095 transitions. [2021-11-04 01:52:42,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-04 01:52:42,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 01:52:42,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 01:52:42,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 01:52:42,176 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-04 01:52:42,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 01:52:42,177 INFO L85 PathProgramCache]: Analyzing trace with hash -2026520274, now seen corresponding path program 1 times [2021-11-04 01:52:42,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 01:52:42,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106718340] [2021-11-04 01:52:42,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 01:52:42,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 01:52:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 01:52:42,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 01:52:42,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 01:52:42,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106718340] [2021-11-04 01:52:42,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106718340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 01:52:42,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 01:52:42,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-04 01:52:42,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28206532] [2021-11-04 01:52:42,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 01:52:42,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-04 01:52:42,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 01:52:42,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-04 01:52:42,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-04 01:52:42,982 INFO L87 Difference]: Start difference. First operand 27844 states and 38095 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 01:52:45,061 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 01:58:01,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 01:58:01,968 INFO L93 Difference]: Finished difference Result 92276 states and 125801 transitions. [2021-11-04 01:58:01,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-04 01:58:01,969 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-04 01:58:01,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 01:58:02,115 INFO L225 Difference]: With dead ends: 92276 [2021-11-04 01:58:02,115 INFO L226 Difference]: Without dead ends: 64534 [2021-11-04 01:58:02,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 565.26ms TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2021-11-04 01:58:02,168 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 39761 mSDsluCounter, 105386 mSDsCounter, 0 mSdLazyCounter, 122387 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 283192.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39763 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 122428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 659.17ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 122387 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 313609.31ms IncrementalHoareTripleChecker+Time [2021-11-04 01:58:02,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39763 Valid, 177 Invalid, 122428 Unknown, 0 Unchecked, 659.17ms Time], IncrementalHoareTripleChecker [40 Valid, 122387 Invalid, 1 Unknown, 0 Unchecked, 313609.31ms Time] [2021-11-04 01:58:02,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64534 states. [2021-11-04 01:58:02,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64534 to 27854. [2021-11-04 01:58:02,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27854 states, 27796 states have (on average 1.3687221182904015) internal successors, (38045), 27805 states have internal predecessors, (38045), 30 states have call successors, (30), 18 states have call predecessors, (30), 18 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-04 01:58:03,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27854 states to 27854 states and 38105 transitions. [2021-11-04 01:58:03,029 INFO L78 Accepts]: Start accepts. Automaton has 27854 states and 38105 transitions. Word has length 20 [2021-11-04 01:58:03,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 01:58:03,030 INFO L470 AbstractCegarLoop]: Abstraction has 27854 states and 38105 transitions. [2021-11-04 01:58:03,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 01:58:03,030 INFO L276 IsEmpty]: Start isEmpty. Operand 27854 states and 38105 transitions. [2021-11-04 01:58:03,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-04 01:58:03,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 01:58:03,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 01:58:03,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 01:58:03,031 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-04 01:58:03,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 01:58:03,032 INFO L85 PathProgramCache]: Analyzing trace with hash -672145171, now seen corresponding path program 1 times [2021-11-04 01:58:03,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 01:58:03,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361613960] [2021-11-04 01:58:03,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 01:58:03,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 01:58:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 01:58:04,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 01:58:04,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 01:58:04,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361613960] [2021-11-04 01:58:04,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361613960] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 01:58:04,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 01:58:04,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-04 01:58:04,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900229376] [2021-11-04 01:58:04,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 01:58:04,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-04 01:58:04,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 01:58:04,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-04 01:58:04,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-04 01:58:04,050 INFO L87 Difference]: Start difference. First operand 27854 states and 38105 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 01:58:06,101 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15