./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.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 bf5e73d985bafa5e008f16fba6fb54da90c4b127699bd918a748611ea9b79793 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 15:26:04,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 15:26:04,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 15:26:04,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 15:26:04,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 15:26:04,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 15:26:04,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 15:26:04,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 15:26:04,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 15:26:04,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 15:26:04,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 15:26:04,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 15:26:04,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 15:26:04,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 15:26:04,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 15:26:04,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 15:26:04,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 15:26:04,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 15:26:04,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 15:26:04,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 15:26:04,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 15:26:04,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 15:26:04,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 15:26:04,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 15:26:04,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 15:26:04,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 15:26:04,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 15:26:04,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 15:26:04,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 15:26:04,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 15:26:04,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 15:26:04,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 15:26:04,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 15:26:04,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 15:26:04,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 15:26:04,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 15:26:04,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 15:26:04,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 15:26:04,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 15:26:04,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 15:26:04,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 15:26:04,891 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 15:26:04,922 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 15:26:04,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 15:26:04,923 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 15:26:04,923 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 15:26:04,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 15:26:04,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 15:26:04,924 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 15:26:04,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 15:26:04,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 15:26:04,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 15:26:04,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 15:26:04,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 15:26:04,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 15:26:04,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 15:26:04,927 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 15:26:04,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 15:26:04,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 15:26:04,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 15:26:04,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 15:26:04,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:26:04,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 15:26:04,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 15:26:04,929 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 15:26:04,929 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 15:26:04,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 15:26:04,929 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 15:26:04,929 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 15:26:04,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 15:26:04,930 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 15:26:04,930 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf5e73d985bafa5e008f16fba6fb54da90c4b127699bd918a748611ea9b79793 [2021-11-06 15:26:05,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 15:26:05,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 15:26:05,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 15:26:05,216 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 15:26:05,216 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 15:26:05,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:26:05,273 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f659c66a4/a9e58fd393084ff6b5808f3372640afd/FLAG776557117 [2021-11-06 15:26:05,911 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 15:26:05,915 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:26:05,957 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f659c66a4/a9e58fd393084ff6b5808f3372640afd/FLAG776557117 [2021-11-06 15:26:06,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f659c66a4/a9e58fd393084ff6b5808f3372640afd [2021-11-06 15:26:06,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 15:26:06,118 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 15:26:06,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 15:26:06,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 15:26:06,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 15:26:06,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:26:06" (1/1) ... [2021-11-06 15:26:06,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9052fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:26:06, skipping insertion in model container [2021-11-06 15:26:06,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:26:06" (1/1) ... [2021-11-06 15:26:06,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 15:26:06,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 15:26:07,109 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-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i[158797,158810] [2021-11-06 15:26:07,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:26:07,179 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 15:26:07,447 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-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i[158797,158810] [2021-11-06 15:26:07,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:26:07,507 INFO L208 MainTranslator]: Completed translation [2021-11-06 15:26:07,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:26:07 WrapperNode [2021-11-06 15:26:07,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 15:26:07,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 15:26:07,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 15:26:07,511 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 15:26:07,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:26:07" (1/1) ... [2021-11-06 15:26:07,588 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:26:07" (1/1) ... [2021-11-06 15:26:08,689 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 15:26:08,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 15:26:08,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 15:26:08,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 15:26:08,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:26:07" (1/1) ... [2021-11-06 15:26:08,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:26:07" (1/1) ... [2021-11-06 15:26:09,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:26:07" (1/1) ... [2021-11-06 15:26:09,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:26:07" (1/1) ... [2021-11-06 15:26:10,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:26:07" (1/1) ... [2021-11-06 15:26:10,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:26:07" (1/1) ... [2021-11-06 15:26:10,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:26:07" (1/1) ... [2021-11-06 15:26:10,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 15:26:10,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 15:26:10,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 15:26:10,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 15:26:10,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:26:07" (1/1) ... [2021-11-06 15:26:10,510 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:26:10,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:26:10,532 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) [2021-11-06 15:26:10,546 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 [2021-11-06 15:26:10,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 15:26:10,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 15:26:10,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 15:26:10,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 15:26:10,568 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2021-11-06 15:26:10,568 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2021-11-06 15:26:10,568 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2021-11-06 15:26:10,569 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2021-11-06 15:26:10,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 15:26:10,569 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2021-11-06 15:26:10,569 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2021-11-06 15:26:10,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 15:26:10,569 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-06 15:26:10,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 15:26:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 15:26:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 15:26:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2021-11-06 15:26:10,570 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2021-11-06 15:26:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 15:26:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 15:26:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 15:26:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2021-11-06 15:26:10,571 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2021-11-06 15:26:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 15:26:10,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 15:26:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 15:26:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 15:26:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 15:26:10,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 15:26:58,607 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 15:26:58,607 INFO L299 CfgBuilder]: Removed 12639 assume(true) statements. [2021-11-06 15:26:58,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:26:58 BoogieIcfgContainer [2021-11-06 15:26:58,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 15:26:58,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 15:26:58,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 15:26:58,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 15:26:58,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 03:26:06" (1/3) ... [2021-11-06 15:26:58,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649f68c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:26:58, skipping insertion in model container [2021-11-06 15:26:58,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:26:07" (2/3) ... [2021-11-06 15:26:58,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649f68c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:26:58, skipping insertion in model container [2021-11-06 15:26:58,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:26:58" (3/3) ... [2021-11-06 15:26:58,626 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:26:58,630 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 15:26:58,630 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-06 15:26:58,699 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 15:26:58,705 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 [2021-11-06 15:26:58,705 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-06 15:26:58,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 9739 states, 9703 states have (on average 1.3758631351128516) internal successors, (13350), 9722 states have internal predecessors, (13350), 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) [2021-11-06 15:26:58,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-06 15:26:58,830 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:26:58,831 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:26:58,832 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)] === [2021-11-06 15:26:58,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:26:58,836 INFO L85 PathProgramCache]: Analyzing trace with hash -178369046, now seen corresponding path program 1 times [2021-11-06 15:26:58,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:26:58,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145920012] [2021-11-06 15:26:58,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:26:58,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:26:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:26:59,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:26:59,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:26:59,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145920012] [2021-11-06 15:26:59,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145920012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:26:59,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:26:59,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:26:59,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578814203] [2021-11-06 15:26:59,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 15:26:59,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:26:59,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 15:26:59,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:26:59,404 INFO L87 Difference]: Start difference. First operand has 9739 states, 9703 states have (on average 1.3758631351128516) internal successors, (13350), 9722 states have internal predecessors, (13350), 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 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 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) [2021-11-06 15:26:59,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:26:59,769 INFO L93 Difference]: Finished difference Result 19474 states and 26745 transitions. [2021-11-06 15:26:59,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 15:26:59,771 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 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 51 [2021-11-06 15:26:59,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:26:59,836 INFO L225 Difference]: With dead ends: 19474 [2021-11-06 15:26:59,837 INFO L226 Difference]: Without dead ends: 9729 [2021-11-06 15:26:59,883 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:26:59,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9729 states. [2021-11-06 15:27:00,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9729 to 9729. [2021-11-06 15:27:00,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9729 states, 9694 states have (on average 1.3606354446049103) internal successors, (13190), 9712 states have internal predecessors, (13190), 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) [2021-11-06 15:27:00,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9729 states to 9729 states and 13210 transitions. [2021-11-06 15:27:00,379 INFO L78 Accepts]: Start accepts. Automaton has 9729 states and 13210 transitions. Word has length 51 [2021-11-06 15:27:00,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:00,379 INFO L470 AbstractCegarLoop]: Abstraction has 9729 states and 13210 transitions. [2021-11-06 15:27:00,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 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) [2021-11-06 15:27:00,381 INFO L276 IsEmpty]: Start isEmpty. Operand 9729 states and 13210 transitions. [2021-11-06 15:27:00,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-06 15:27:00,385 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:00,385 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:00,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 15:27:00,386 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 15:27:00,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:00,388 INFO L85 PathProgramCache]: Analyzing trace with hash 2005484894, now seen corresponding path program 1 times [2021-11-06 15:27:00,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:00,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173593846] [2021-11-06 15:27:00,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:00,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:00,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:27:00,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:00,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173593846] [2021-11-06 15:27:00,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173593846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:00,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:27:00,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:27:00,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229340444] [2021-11-06 15:27:00,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:27:00,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:00,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:27:00,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:00,701 INFO L87 Difference]: Start difference. First operand 9729 states and 13210 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-06 15:27:03,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:03,342 INFO L93 Difference]: Finished difference Result 28981 states and 39405 transitions. [2021-11-06 15:27:03,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:27:03,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2021-11-06 15:27:03,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:03,429 INFO L225 Difference]: With dead ends: 28981 [2021-11-06 15:27:03,429 INFO L226 Difference]: Without dead ends: 19294 [2021-11-06 15:27:03,459 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:03,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19294 states. [2021-11-06 15:27:04,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19294 to 19294. [2021-11-06 15:27:04,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19294 states, 19243 states have (on average 1.3614820973860624) internal successors, (26199), 19261 states have internal predecessors, (26199), 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) [2021-11-06 15:27:04,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19294 states to 19294 states and 26239 transitions. [2021-11-06 15:27:04,183 INFO L78 Accepts]: Start accepts. Automaton has 19294 states and 26239 transitions. Word has length 51 [2021-11-06 15:27:04,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:04,184 INFO L470 AbstractCegarLoop]: Abstraction has 19294 states and 26239 transitions. [2021-11-06 15:27:04,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-06 15:27:04,185 INFO L276 IsEmpty]: Start isEmpty. Operand 19294 states and 26239 transitions. [2021-11-06 15:27:04,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-06 15:27:04,192 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:04,196 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:04,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 15:27:04,196 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 15:27:04,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:04,204 INFO L85 PathProgramCache]: Analyzing trace with hash -716750598, now seen corresponding path program 1 times [2021-11-06 15:27:04,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:04,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694972196] [2021-11-06 15:27:04,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:04,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:04,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:27:04,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:04,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694972196] [2021-11-06 15:27:04,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694972196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:04,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:27:04,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:27:04,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486154859] [2021-11-06 15:27:04,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:27:04,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:04,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:27:04,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:04,440 INFO L87 Difference]: Start difference. First operand 19294 states and 26239 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 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) [2021-11-06 15:27:05,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:05,168 INFO L93 Difference]: Finished difference Result 38503 states and 52387 transitions. [2021-11-06 15:27:05,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:27:05,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 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 54 [2021-11-06 15:27:05,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:05,324 INFO L225 Difference]: With dead ends: 38503 [2021-11-06 15:27:05,325 INFO L226 Difference]: Without dead ends: 38471 [2021-11-06 15:27:05,352 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:05,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38471 states. [2021-11-06 15:27:06,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38471 to 38467. [2021-11-06 15:27:06,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38467 states, 38386 states have (on average 1.361720418902725) internal successors, (52271), 38402 states have internal predecessors, (52271), 40 states have call successors, (40), 24 states have call predecessors, (40), 24 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-06 15:27:06,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38467 states to 38467 states and 52351 transitions. [2021-11-06 15:27:06,629 INFO L78 Accepts]: Start accepts. Automaton has 38467 states and 52351 transitions. Word has length 54 [2021-11-06 15:27:06,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:06,631 INFO L470 AbstractCegarLoop]: Abstraction has 38467 states and 52351 transitions. [2021-11-06 15:27:06,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 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) [2021-11-06 15:27:06,631 INFO L276 IsEmpty]: Start isEmpty. Operand 38467 states and 52351 transitions. [2021-11-06 15:27:06,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-06 15:27:06,632 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:06,633 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:06,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 15:27:06,633 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 15:27:06,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:06,634 INFO L85 PathProgramCache]: Analyzing trace with hash -744400076, now seen corresponding path program 1 times [2021-11-06 15:27:06,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:06,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697921424] [2021-11-06 15:27:06,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:06,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:06,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:27:06,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:06,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697921424] [2021-11-06 15:27:06,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697921424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:06,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:27:06,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:27:06,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829631310] [2021-11-06 15:27:06,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:27:06,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:06,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:27:06,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:06,834 INFO L87 Difference]: Start difference. First operand 38467 states and 52351 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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) [2021-11-06 15:27:08,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:08,437 INFO L93 Difference]: Finished difference Result 115283 states and 156929 transitions. [2021-11-06 15:27:08,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:27:08,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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 55 [2021-11-06 15:27:08,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:08,726 INFO L225 Difference]: With dead ends: 115283 [2021-11-06 15:27:08,727 INFO L226 Difference]: Without dead ends: 76858 [2021-11-06 15:27:08,966 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:09,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76858 states. [2021-11-06 15:27:10,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76858 to 76838. [2021-11-06 15:27:10,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76838 states, 76693 states have (on average 1.3619104742284172) internal successors, (104449), 76709 states have internal predecessors, (104449), 80 states have call successors, (80), 48 states have call predecessors, (80), 48 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2021-11-06 15:27:11,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76838 states to 76838 states and 104609 transitions. [2021-11-06 15:27:11,245 INFO L78 Accepts]: Start accepts. Automaton has 76838 states and 104609 transitions. Word has length 55 [2021-11-06 15:27:11,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:11,246 INFO L470 AbstractCegarLoop]: Abstraction has 76838 states and 104609 transitions. [2021-11-06 15:27:11,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 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) [2021-11-06 15:27:11,246 INFO L276 IsEmpty]: Start isEmpty. Operand 76838 states and 104609 transitions. [2021-11-06 15:27:11,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-06 15:27:11,248 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:11,248 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:11,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 15:27:11,249 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 15:27:11,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:11,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1461549096, now seen corresponding path program 1 times [2021-11-06 15:27:11,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:11,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767141037] [2021-11-06 15:27:11,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:11,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:11,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:27:11,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:11,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767141037] [2021-11-06 15:27:11,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767141037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:11,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:27:11,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:27:11,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200543705] [2021-11-06 15:27:11,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:27:11,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:11,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:27:11,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:11,466 INFO L87 Difference]: Start difference. First operand 76838 states and 104609 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 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) [2021-11-06 15:27:14,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:14,096 INFO L93 Difference]: Finished difference Result 230413 states and 313720 transitions. [2021-11-06 15:27:14,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:27:14,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 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 64 [2021-11-06 15:27:14,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:14,778 INFO L225 Difference]: With dead ends: 230413 [2021-11-06 15:27:14,779 INFO L226 Difference]: Without dead ends: 153615 [2021-11-06 15:27:14,925 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:15,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153615 states. [2021-11-06 15:27:18,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153615 to 153578. [2021-11-06 15:27:18,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153578 states, 153305 states have (on average 1.3620038485372297) internal successors, (208802), 153321 states have internal predecessors, (208802), 160 states have call successors, (160), 96 states have call predecessors, (160), 96 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2021-11-06 15:27:19,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153578 states to 153578 states and 209122 transitions. [2021-11-06 15:27:19,306 INFO L78 Accepts]: Start accepts. Automaton has 153578 states and 209122 transitions. Word has length 64 [2021-11-06 15:27:19,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:19,307 INFO L470 AbstractCegarLoop]: Abstraction has 153578 states and 209122 transitions. [2021-11-06 15:27:19,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 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) [2021-11-06 15:27:19,308 INFO L276 IsEmpty]: Start isEmpty. Operand 153578 states and 209122 transitions. [2021-11-06 15:27:19,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-06 15:27:19,310 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:19,310 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:19,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 15:27:19,311 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 15:27:19,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:19,312 INFO L85 PathProgramCache]: Analyzing trace with hash -257397806, now seen corresponding path program 1 times [2021-11-06 15:27:19,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:19,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681081739] [2021-11-06 15:27:19,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:19,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:19,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:27:19,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:19,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681081739] [2021-11-06 15:27:19,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681081739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:19,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:27:19,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:27:19,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653232709] [2021-11-06 15:27:19,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:27:19,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:19,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:27:19,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:19,678 INFO L87 Difference]: Start difference. First operand 153578 states and 209122 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-11-06 15:27:22,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:22,818 INFO L93 Difference]: Finished difference Result 307131 states and 418221 transitions. [2021-11-06 15:27:22,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:27:22,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2021-11-06 15:27:22,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:23,261 INFO L225 Difference]: With dead ends: 307131 [2021-11-06 15:27:23,262 INFO L226 Difference]: Without dead ends: 153581 [2021-11-06 15:27:23,448 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:23,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153581 states. [2021-11-06 15:27:26,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153581 to 153581. [2021-11-06 15:27:26,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153581 states, 153308 states have (on average 1.3619967646828606) internal successors, (208805), 153324 states have internal predecessors, (208805), 160 states have call successors, (160), 96 states have call predecessors, (160), 96 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2021-11-06 15:27:26,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153581 states to 153581 states and 209125 transitions. [2021-11-06 15:27:26,751 INFO L78 Accepts]: Start accepts. Automaton has 153581 states and 209125 transitions. Word has length 66 [2021-11-06 15:27:26,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:26,751 INFO L470 AbstractCegarLoop]: Abstraction has 153581 states and 209125 transitions. [2021-11-06 15:27:26,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-11-06 15:27:26,752 INFO L276 IsEmpty]: Start isEmpty. Operand 153581 states and 209125 transitions. [2021-11-06 15:27:26,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 15:27:26,753 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:26,754 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:26,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 15:27:26,754 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 15:27:26,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:26,757 INFO L85 PathProgramCache]: Analyzing trace with hash 299255453, now seen corresponding path program 1 times [2021-11-06 15:27:26,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:26,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665931615] [2021-11-06 15:27:26,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:26,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:27,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 15:27:27,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:27,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665931615] [2021-11-06 15:27:27,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665931615] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:27:27,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868128468] [2021-11-06 15:27:27,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:27,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:27:27,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:27:27,067 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:27:27,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process