./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-1.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-1.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 cb8f0ebb3c2471fcffc912ab6e7b9ec5c4e0cbee8604050053df01c587aed5a7 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 01:49:07,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 01:49:07,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 01:49:07,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 01:49:07,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 01:49:07,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 01:49:07,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 01:49:07,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 01:49:07,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 01:49:07,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 01:49:07,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 01:49:07,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 01:49:07,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 01:49:07,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 01:49:07,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 01:49:07,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 01:49:07,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 01:49:07,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 01:49:07,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 01:49:07,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 01:49:07,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 01:49:07,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 01:49:07,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 01:49:07,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 01:49:07,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 01:49:07,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 01:49:07,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 01:49:07,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 01:49:07,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 01:49:07,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 01:49:07,087 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 01:49:07,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 01:49:07,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 01:49:07,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 01:49:07,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 01:49:07,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 01:49:07,092 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 01:49:07,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 01:49:07,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 01:49:07,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 01:49:07,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 01:49:07,095 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 01:49:07,127 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 01:49:07,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 01:49:07,128 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 01:49:07,129 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 01:49:07,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 01:49:07,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 01:49:07,130 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 01:49:07,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 01:49:07,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 01:49:07,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 01:49:07,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 01:49:07,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 01:49:07,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 01:49:07,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 01:49:07,132 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 01:49:07,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 01:49:07,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 01:49:07,133 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 01:49:07,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 01:49:07,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 01:49:07,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 01:49:07,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 01:49:07,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 01:49:07,134 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 01:49:07,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 01:49:07,134 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 01:49:07,134 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 01:49:07,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 01:49:07,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 01:49:07,136 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb8f0ebb3c2471fcffc912ab6e7b9ec5c4e0cbee8604050053df01c587aed5a7 [2021-11-04 01:49:07,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 01:49:07,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 01:49:07,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 01:49:07,362 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 01:49:07,363 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 01:49:07,364 INFO L432 ainManager$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-1.i [2021-11-04 01:49:07,444 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9867aa48/32cb0990f5ea43cd81b67d8f2bc0baf9/FLAGbbe0ffdd8 [2021-11-04 01:49:08,046 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 01:49:08,046 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-1.i [2021-11-04 01:49:08,074 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9867aa48/32cb0990f5ea43cd81b67d8f2bc0baf9/FLAGbbe0ffdd8 [2021-11-04 01:49:08,389 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9867aa48/32cb0990f5ea43cd81b67d8f2bc0baf9 [2021-11-04 01:49:08,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 01:49:08,392 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 01:49:08,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 01:49:08,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 01:49:08,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 01:49:08,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 01:49:08" (1/1) ... [2021-11-04 01:49:08,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@752a587f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 01:49:08, skipping insertion in model container [2021-11-04 01:49:08,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 01:49:08" (1/1) ... [2021-11-04 01:49:08,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 01:49:08,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 01:49:09,455 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-1.i[158757,158770] [2021-11-04 01:49:09,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 01:49:09,516 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 01:49:09,676 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-1.i[158757,158770] [2021-11-04 01:49:09,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 01:49:09,725 INFO L208 MainTranslator]: Completed translation [2021-11-04 01:49:09,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 01:49:09 WrapperNode [2021-11-04 01:49:09,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 01:49:09,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 01:49:09,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 01:49:09,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 01:49:09,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 01:49:09" (1/1) ... [2021-11-04 01:49:09,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 01:49:09" (1/1) ... [2021-11-04 01:49:10,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 01:49:10,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 01:49:10,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 01:49:10,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 01:49:10,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 01:49:09" (1/1) ... [2021-11-04 01:49:10,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 01:49:09" (1/1) ... [2021-11-04 01:49:11,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 01:49:09" (1/1) ... [2021-11-04 01:49:11,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 01:49:09" (1/1) ... [2021-11-04 01:49:12,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 01:49:09" (1/1) ... [2021-11-04 01:49:12,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 01:49:09" (1/1) ... [2021-11-04 01:49:12,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 01:49:09" (1/1) ... [2021-11-04 01:49:12,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 01:49:12,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 01:49:12,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 01:49:12,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 01:49:12,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 01:49:09" (1/1) ... [2021-11-04 01:49:12,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 01:49:12,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 01:49:12,755 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 01:49:12,774 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 01:49:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 01:49:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 01:49:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 01:49:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 01:49:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2021-11-04 01:49:12,791 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2021-11-04 01:49:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2021-11-04 01:49:12,791 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2021-11-04 01:49:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 01:49:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2021-11-04 01:49:12,792 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2021-11-04 01:49:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 01:49:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-04 01:49:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2021-11-04 01:49:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 01:49:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 01:49:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 01:49:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2021-11-04 01:49:12,793 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2021-11-04 01:49:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 01:49:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 01:49:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 01:49:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2021-11-04 01:49:12,793 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2021-11-04 01:49:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-04 01:49:12,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-04 01:49:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 01:49:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 01:49:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 01:49:12,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 01:49:41,514 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 01:49:41,515 INFO L299 CfgBuilder]: Removed 13433 assume(true) statements. [2021-11-04 01:49:41,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 01:49:41 BoogieIcfgContainer [2021-11-04 01:49:41,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 01:49:41,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 01:49:41,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 01:49:41,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 01:49:41,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 01:49:08" (1/3) ... [2021-11-04 01:49:41,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2a1777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 01:49:41, skipping insertion in model container [2021-11-04 01:49:41,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 01:49:09" (2/3) ... [2021-11-04 01:49:41,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2a1777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 01:49:41, skipping insertion in model container [2021-11-04 01:49:41,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 01:49:41" (3/3) ... [2021-11-04 01:49:41,535 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i [2021-11-04 01:49:41,539 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 01:49:41,540 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-04 01:49:41,605 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 01:49:41,612 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 01:49:41,612 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-04 01:49:41,743 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 01:49:41,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-04 01:49:41,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 01:49:41,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 01:49:41,748 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 01:49:41,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 01:49:41,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1003863478, now seen corresponding path program 1 times [2021-11-04 01:49:41,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 01:49:41,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541633397] [2021-11-04 01:49:41,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 01:49:41,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 01:49:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 01:49:42,212 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 01:49:42,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 01:49:42,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541633397] [2021-11-04 01:49:42,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541633397] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 01:49:42,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 01:49:42,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 01:49:42,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670443264] [2021-11-04 01:49:42,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 01:49:42,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 01:49:42,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 01:49:42,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 01:49:42,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 01:49:42,267 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 01:49:44,380 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 01:50:27,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 01:50:27,836 INFO L93 Difference]: Finished difference Result 29868 states and 41662 transitions. [2021-11-04 01:50:27,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 01:50:27,840 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 01:50:27,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 01:50:27,946 INFO L225 Difference]: With dead ends: 29868 [2021-11-04 01:50:27,947 INFO L226 Difference]: Without dead ends: 18529 [2021-11-04 01:50:28,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 01:50:28,014 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 12713 mSDsluCounter, 12630 mSDsCounter, 0 mSdLazyCounter, 25318 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38895.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12713 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 25331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 88.18ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 25318 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43873.67ms IncrementalHoareTripleChecker+Time [2021-11-04 01:50:28,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12713 Valid, 52 Invalid, 25331 Unknown, 0 Unchecked, 88.18ms Time], IncrementalHoareTripleChecker [12 Valid, 25318 Invalid, 1 Unknown, 0 Unchecked, 43873.67ms Time] [2021-11-04 01:50:28,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18529 states. [2021-11-04 01:50:28,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18529 to 18523. [2021-11-04 01:50:28,470 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 01:50:28,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18523 states to 18523 states and 25344 transitions. [2021-11-04 01:50:28,532 INFO L78 Accepts]: Start accepts. Automaton has 18523 states and 25344 transitions. Word has length 8 [2021-11-04 01:50:28,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 01:50:28,534 INFO L470 AbstractCegarLoop]: Abstraction has 18523 states and 25344 transitions. [2021-11-04 01:50:28,534 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 01:50:28,534 INFO L276 IsEmpty]: Start isEmpty. Operand 18523 states and 25344 transitions. [2021-11-04 01:50:28,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-04 01:50:28,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 01:50:28,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 01:50:28,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 01:50:28,536 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 01:50:28,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 01:50:28,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1055016019, now seen corresponding path program 1 times [2021-11-04 01:50:28,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 01:50:28,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260989109] [2021-11-04 01:50:28,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 01:50:28,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 01:50:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 01:50:28,726 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 01:50:28,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 01:50:28,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260989109] [2021-11-04 01:50:28,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260989109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 01:50:28,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 01:50:28,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 01:50:28,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202121886] [2021-11-04 01:50:28,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 01:50:28,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 01:50:28,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 01:50:28,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 01:50:28,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 01:50:28,731 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 01:50:30,774 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 01:52:06,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 01:52:06,232 INFO L93 Difference]: Finished difference Result 46242 states and 63288 transitions. [2021-11-04 01:52:06,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 01:52:06,233 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 01:52:06,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 01:52:06,364 INFO L225 Difference]: With dead ends: 46242 [2021-11-04 01:52:06,365 INFO L226 Difference]: Without dead ends: 37009 [2021-11-04 01:52:06,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.08ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 01:52:06,400 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 12700 mSDsluCounter, 12677 mSDsCounter, 0 mSdLazyCounter, 25360 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85047.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12700 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 25369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 160.51ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 25360 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 95166.84ms IncrementalHoareTripleChecker+Time [2021-11-04 01:52:06,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12700 Valid, 50 Invalid, 25369 Unknown, 0 Unchecked, 160.51ms Time], IncrementalHoareTripleChecker [8 Valid, 25360 Invalid, 1 Unknown, 0 Unchecked, 95166.84ms Time] [2021-11-04 01:52:06,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37009 states. [2021-11-04 01:52:06,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37009 to 27787. [2021-11-04 01:52:07,023 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 01:52:07,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27787 states to 27787 states and 38026 transitions. [2021-11-04 01:52:07,084 INFO L78 Accepts]: Start accepts. Automaton has 27787 states and 38026 transitions. Word has length 9 [2021-11-04 01:52:07,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 01:52:07,084 INFO L470 AbstractCegarLoop]: Abstraction has 27787 states and 38026 transitions. [2021-11-04 01:52:07,085 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 01:52:07,085 INFO L276 IsEmpty]: Start isEmpty. Operand 27787 states and 38026 transitions. [2021-11-04 01:52:07,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-04 01:52:07,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 01:52:07,086 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 01:52:07,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 01:52:07,086 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 01:52:07,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 01:52:07,087 INFO L85 PathProgramCache]: Analyzing trace with hash 746265207, now seen corresponding path program 1 times [2021-11-04 01:52:07,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 01:52:07,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317343681] [2021-11-04 01:52:07,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 01:52:07,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 01:52:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 01:52:07,277 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 01:52:07,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 01:52:07,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317343681] [2021-11-04 01:52:07,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317343681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 01:52:07,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 01:52:07,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 01:52:07,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034174002] [2021-11-04 01:52:07,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 01:52:07,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 01:52:07,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 01:52:07,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 01:52:07,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 01:52:07,280 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 01:52:09,342 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 01:53:42,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 01:53:42,359 INFO L93 Difference]: Finished difference Result 64742 states and 88619 transitions. [2021-11-04 01:53:42,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 01:53:42,359 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 01:53:42,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 01:53:42,529 INFO L225 Difference]: With dead ends: 64742 [2021-11-04 01:53:42,529 INFO L226 Difference]: Without dead ends: 55505 [2021-11-04 01:53:42,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 01:53:42,578 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 12691 mSDsluCounter, 12665 mSDsCounter, 0 mSdLazyCounter, 25344 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81918.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12691 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 25351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 119.91ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25344 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 92876.46ms IncrementalHoareTripleChecker+Time [2021-11-04 01:53:42,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12691 Valid, 50 Invalid, 25351 Unknown, 0 Unchecked, 119.91ms Time], IncrementalHoareTripleChecker [6 Valid, 25344 Invalid, 1 Unknown, 0 Unchecked, 92876.46ms Time] [2021-11-04 01:53:42,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55505 states. [2021-11-04 01:53:43,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55505 to 27844. [2021-11-04 01:53:43,249 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 01:53:43,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27844 states to 27844 states and 38095 transitions. [2021-11-04 01:53:43,304 INFO L78 Accepts]: Start accepts. Automaton has 27844 states and 38095 transitions. Word has length 18 [2021-11-04 01:53:43,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 01:53:43,304 INFO L470 AbstractCegarLoop]: Abstraction has 27844 states and 38095 transitions. [2021-11-04 01:53:43,305 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 01:53:43,305 INFO L276 IsEmpty]: Start isEmpty. Operand 27844 states and 38095 transitions. [2021-11-04 01:53:43,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-04 01:53:43,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 01:53:43,306 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 01:53:43,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 01:53:43,306 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 01:53:43,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 01:53:43,307 INFO L85 PathProgramCache]: Analyzing trace with hash -2026520274, now seen corresponding path program 1 times [2021-11-04 01:53:43,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 01:53:43,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870929188] [2021-11-04 01:53:43,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 01:53:43,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 01:53:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 01:53:44,175 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 01:53:44,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 01:53:44,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870929188] [2021-11-04 01:53:44,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870929188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 01:53:44,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 01:53:44,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-04 01:53:44,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735241010] [2021-11-04 01:53:44,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 01:53:44,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-04 01:53:44,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 01:53:44,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-04 01:53:44,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-04 01:53:44,176 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 01:53:46,216 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 01:59:53,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 01:59:53,489 INFO L93 Difference]: Finished difference Result 92276 states and 125801 transitions. [2021-11-04 01:59:53,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-04 01:59:53,490 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 01:59:53,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 01:59:53,640 INFO L225 Difference]: With dead ends: 92276 [2021-11-04 01:59:53,640 INFO L226 Difference]: Without dead ends: 64534 [2021-11-04 01:59:53,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 721.10ms TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2021-11-04 01:59:53,696 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 39761 mSDsluCounter, 105386 mSDsCounter, 0 mSdLazyCounter, 122387 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 329356.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39763 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 122428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 783.81ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 122387 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 363086.82ms IncrementalHoareTripleChecker+Time [2021-11-04 01:59:53,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39763 Valid, 177 Invalid, 122428 Unknown, 0 Unchecked, 783.81ms Time], IncrementalHoareTripleChecker [40 Valid, 122387 Invalid, 1 Unknown, 0 Unchecked, 363086.82ms Time] [2021-11-04 01:59:53,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64534 states. [2021-11-04 01:59:54,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64534 to 27854. [2021-11-04 01:59:54,900 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 01:59:54,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27854 states to 27854 states and 38105 transitions. [2021-11-04 01:59:54,946 INFO L78 Accepts]: Start accepts. Automaton has 27854 states and 38105 transitions. Word has length 20 [2021-11-04 01:59:54,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 01:59:54,947 INFO L470 AbstractCegarLoop]: Abstraction has 27854 states and 38105 transitions. [2021-11-04 01:59:54,947 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 01:59:54,947 INFO L276 IsEmpty]: Start isEmpty. Operand 27854 states and 38105 transitions. [2021-11-04 01:59:54,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-04 01:59:54,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 01:59:54,948 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 01:59:54,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 01:59:54,949 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 01:59:54,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 01:59:54,949 INFO L85 PathProgramCache]: Analyzing trace with hash -672145171, now seen corresponding path program 1 times [2021-11-04 01:59:54,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 01:59:54,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963654494] [2021-11-04 01:59:54,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 01:59:54,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 01:59:56,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 01:59:56,590 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 01:59:56,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 01:59:56,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963654494] [2021-11-04 01:59:56,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963654494] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 01:59:56,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 01:59:56,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-04 01:59:56,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53784735] [2021-11-04 01:59:56,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 01:59:56,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-04 01:59:56,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 01:59:56,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-04 01:59:56,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-04 01:59:56,593 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 01:59:58,642 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