/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -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 -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:48:33,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:48:33,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:48:33,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:48:33,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:48:33,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:48:33,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:48:33,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:48:33,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:48:33,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:48:33,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:48:33,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:48:33,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:48:33,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:48:33,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:48:33,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:48:33,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:48:33,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:48:33,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:48:33,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:48:33,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:48:33,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:48:33,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:48:33,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:48:33,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:48:33,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:48:33,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:48:33,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:48:33,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:48:33,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:48:33,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:48:33,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:48:33,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:48:33,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:48:33,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:48:33,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:48:33,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:48:33,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:48:33,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:48:33,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:48:33,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:48:33,913 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:48:33,942 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:48:33,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:48:33,944 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:48:33,944 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:48:33,944 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:48:33,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:48:33,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:48:33,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:48:33,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:48:33,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:48:33,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:48:33,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:48:33,946 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:48:33,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:48:33,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:48:33,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:48:33,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:48:33,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:48:33,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:48:33,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:48:33,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:48:33,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:48:33,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:48:33,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:48:33,949 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:48:33,949 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:48:34,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:48:34,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:48:34,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:48:34,371 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:48:34,371 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:48:34,372 INFO L432 ainManager$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 [2020-12-22 13:48:34,469 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c793973c/2ebce4564a1b40c5a6e9efeb2fb06d91/FLAG4d5095cd6 [2020-12-22 13:48:35,443 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:48:35,444 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 [2020-12-22 13:48:35,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c793973c/2ebce4564a1b40c5a6e9efeb2fb06d91/FLAG4d5095cd6 [2020-12-22 13:48:35,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c793973c/2ebce4564a1b40c5a6e9efeb2fb06d91 [2020-12-22 13:48:35,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:48:35,946 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:48:35,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:48:35,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:48:35,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:48:35,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:48:35" (1/1) ... [2020-12-22 13:48:35,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c63c52c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:48:35, skipping insertion in model container [2020-12-22 13:48:35,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:48:35" (1/1) ... [2020-12-22 13:48:35,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:48:36,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:48:37,756 WARN L226 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] [2020-12-22 13:48:37,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:48:37,889 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:48:38,286 WARN L226 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] [2020-12-22 13:48:38,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:48:38,607 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:48:38,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:48:38 WrapperNode [2020-12-22 13:48:38,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:48:38,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:48:38,610 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:48:38,610 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:48:38,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:48:38" (1/1) ... [2020-12-22 13:48:38,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:48:38" (1/1) ... [2020-12-22 13:48:40,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:48:40,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:48:40,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:48:40,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:48:40,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:48:38" (1/1) ... [2020-12-22 13:48:40,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:48:38" (1/1) ... [2020-12-22 13:48:41,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:48:38" (1/1) ... [2020-12-22 13:48:41,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:48:38" (1/1) ... [2020-12-22 13:48:42,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:48:38" (1/1) ... [2020-12-22 13:48:42,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:48:38" (1/1) ... [2020-12-22 13:48:42,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:48:38" (1/1) ... [2020-12-22 13:48:43,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:48:43,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:48:43,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:48:43,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:48:43,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:48:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:48:43,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:48:43,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:48:43,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:48:43,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:48:43,608 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2020-12-22 13:48:43,609 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2020-12-22 13:48:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2020-12-22 13:48:43,609 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2020-12-22 13:48:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:48:43,610 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2020-12-22 13:48:43,611 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2020-12-22 13:48:43,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:48:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-12-22 13:48:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:48:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:48:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 13:48:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2020-12-22 13:48:43,613 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2020-12-22 13:48:43,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:48:43,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:48:43,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:48:43,613 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2020-12-22 13:48:43,613 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2020-12-22 13:48:43,613 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-12-22 13:48:43,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-12-22 13:48:43,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:48:43,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:48:43,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:48:43,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:49:55,395 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:49:55,395 INFO L299 CfgBuilder]: Removed 12639 assume(true) statements. [2020-12-22 13:49:55,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:49:55 BoogieIcfgContainer [2020-12-22 13:49:55,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:49:55,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:49:55,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:49:55,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:49:55,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:48:35" (1/3) ... [2020-12-22 13:49:55,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a3446fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:49:55, skipping insertion in model container [2020-12-22 13:49:55,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:48:38" (2/3) ... [2020-12-22 13:49:55,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a3446fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:49:55, skipping insertion in model container [2020-12-22 13:49:55,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:49:55" (3/3) ... [2020-12-22 13:49:55,422 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 [2020-12-22 13:49:55,430 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:49:55,439 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2020-12-22 13:49:55,461 INFO L253 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2020-12-22 13:49:55,541 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:49:55,541 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:49:55,541 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:49:55,541 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:49:55,541 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:49:55,542 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:49:55,542 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:49:55,542 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:49:55,699 INFO L276 IsEmpty]: Start isEmpty. Operand 9739 states. [2020-12-22 13:49:55,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 13:49:55,714 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:55,715 INFO L422 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] [2020-12-22 13:49:55,716 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:55,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:55,724 INFO L82 PathProgramCache]: Analyzing trace with hash -178369046, now seen corresponding path program 1 times [2020-12-22 13:49:55,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:55,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236722030] [2020-12-22 13:49:55,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:56,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:49:56,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236722030] [2020-12-22 13:49:56,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:56,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:49:56,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435645035] [2020-12-22 13:49:56,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 13:49:56,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:56,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 13:49:56,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 13:49:56,884 INFO L87 Difference]: Start difference. First operand 9739 states. Second operand 2 states. [2020-12-22 13:49:57,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:57,320 INFO L93 Difference]: Finished difference Result 19474 states and 26745 transitions. [2020-12-22 13:49:57,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 13:49:57,322 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 51 [2020-12-22 13:49:57,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:57,410 INFO L225 Difference]: With dead ends: 19474 [2020-12-22 13:49:57,410 INFO L226 Difference]: Without dead ends: 9729 [2020-12-22 13:49:57,460 INFO L677 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 [2020-12-22 13:49:57,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9729 states. [2020-12-22 13:49:57,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9729 to 9729. [2020-12-22 13:49:57,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9729 states. [2020-12-22 13:49:57,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9729 states to 9729 states and 13210 transitions. [2020-12-22 13:49:57,879 INFO L78 Accepts]: Start accepts. Automaton has 9729 states and 13210 transitions. Word has length 51 [2020-12-22 13:49:57,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:57,880 INFO L481 AbstractCegarLoop]: Abstraction has 9729 states and 13210 transitions. [2020-12-22 13:49:57,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 13:49:57,880 INFO L276 IsEmpty]: Start isEmpty. Operand 9729 states and 13210 transitions. [2020-12-22 13:49:57,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 13:49:57,883 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:57,883 INFO L422 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] [2020-12-22 13:49:57,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:49:57,884 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:57,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:57,885 INFO L82 PathProgramCache]: Analyzing trace with hash 2005484894, now seen corresponding path program 1 times [2020-12-22 13:49:57,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:57,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529788617] [2020-12-22 13:49:57,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:58,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:49:58,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529788617] [2020-12-22 13:49:58,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:58,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:58,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112156297] [2020-12-22 13:49:58,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:58,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:58,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:58,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:58,276 INFO L87 Difference]: Start difference. First operand 9729 states and 13210 transitions. Second operand 3 states. [2020-12-22 13:50:01,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:50:01,269 INFO L93 Difference]: Finished difference Result 28981 states and 39405 transitions. [2020-12-22 13:50:01,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:50:01,270 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-22 13:50:01,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:50:01,398 INFO L225 Difference]: With dead ends: 28981 [2020-12-22 13:50:01,399 INFO L226 Difference]: Without dead ends: 19294 [2020-12-22 13:50:01,422 INFO L677 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 [2020-12-22 13:50:01,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19294 states. [2020-12-22 13:50:01,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19294 to 19294. [2020-12-22 13:50:01,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19294 states. [2020-12-22 13:50:02,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19294 states to 19294 states and 26239 transitions. [2020-12-22 13:50:02,041 INFO L78 Accepts]: Start accepts. Automaton has 19294 states and 26239 transitions. Word has length 51 [2020-12-22 13:50:02,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:50:02,042 INFO L481 AbstractCegarLoop]: Abstraction has 19294 states and 26239 transitions. [2020-12-22 13:50:02,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:50:02,043 INFO L276 IsEmpty]: Start isEmpty. Operand 19294 states and 26239 transitions. [2020-12-22 13:50:02,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 13:50:02,057 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:50:02,057 INFO L422 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] [2020-12-22 13:50:02,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:50:02,058 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:50:02,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:50:02,060 INFO L82 PathProgramCache]: Analyzing trace with hash -716750598, now seen corresponding path program 1 times [2020-12-22 13:50:02,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:50:02,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898984855] [2020-12-22 13:50:02,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:02,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:50:02,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898984855] [2020-12-22 13:50:02,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:50:02,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:50:02,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120319248] [2020-12-22 13:50:02,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:50:02,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:50:02,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:50:02,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:50:02,639 INFO L87 Difference]: Start difference. First operand 19294 states and 26239 transitions. Second operand 3 states. [2020-12-22 13:50:03,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:50:03,455 INFO L93 Difference]: Finished difference Result 38503 states and 52387 transitions. [2020-12-22 13:50:03,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:50:03,457 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-22 13:50:03,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:50:03,622 INFO L225 Difference]: With dead ends: 38503 [2020-12-22 13:50:03,623 INFO L226 Difference]: Without dead ends: 38471 [2020-12-22 13:50:03,655 INFO L677 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 [2020-12-22 13:50:03,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38471 states. [2020-12-22 13:50:05,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38471 to 38467. [2020-12-22 13:50:05,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38467 states. [2020-12-22 13:50:05,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38467 states to 38467 states and 52351 transitions. [2020-12-22 13:50:05,148 INFO L78 Accepts]: Start accepts. Automaton has 38467 states and 52351 transitions. Word has length 54 [2020-12-22 13:50:05,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:50:05,151 INFO L481 AbstractCegarLoop]: Abstraction has 38467 states and 52351 transitions. [2020-12-22 13:50:05,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:50:05,152 INFO L276 IsEmpty]: Start isEmpty. Operand 38467 states and 52351 transitions. [2020-12-22 13:50:05,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 13:50:05,154 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:50:05,154 INFO L422 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] [2020-12-22 13:50:05,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:50:05,155 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:50:05,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:50:05,155 INFO L82 PathProgramCache]: Analyzing trace with hash -744400076, now seen corresponding path program 1 times [2020-12-22 13:50:05,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:50:05,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569783014] [2020-12-22 13:50:05,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:05,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:50:05,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569783014] [2020-12-22 13:50:05,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:50:05,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:50:05,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393805059] [2020-12-22 13:50:05,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:50:05,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:50:05,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:50:05,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:50:05,676 INFO L87 Difference]: Start difference. First operand 38467 states and 52351 transitions. Second operand 3 states. [2020-12-22 13:50:07,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:50:07,791 INFO L93 Difference]: Finished difference Result 115283 states and 156929 transitions. [2020-12-22 13:50:07,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:50:07,791 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-22 13:50:07,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:50:08,235 INFO L225 Difference]: With dead ends: 115283 [2020-12-22 13:50:08,236 INFO L226 Difference]: Without dead ends: 76858 [2020-12-22 13:50:08,332 INFO L677 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 [2020-12-22 13:50:08,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76858 states. [2020-12-22 13:50:10,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76858 to 76838. [2020-12-22 13:50:10,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76838 states. [2020-12-22 13:50:10,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76838 states to 76838 states and 104609 transitions. [2020-12-22 13:50:10,826 INFO L78 Accepts]: Start accepts. Automaton has 76838 states and 104609 transitions. Word has length 55 [2020-12-22 13:50:10,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:50:10,827 INFO L481 AbstractCegarLoop]: Abstraction has 76838 states and 104609 transitions. [2020-12-22 13:50:10,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:50:10,828 INFO L276 IsEmpty]: Start isEmpty. Operand 76838 states and 104609 transitions. [2020-12-22 13:50:10,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 13:50:10,831 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:50:10,831 INFO L422 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] [2020-12-22 13:50:10,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:50:10,832 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:50:10,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:50:10,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1461549096, now seen corresponding path program 1 times [2020-12-22 13:50:10,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:50:10,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615392801] [2020-12-22 13:50:10,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:11,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:50:11,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615392801] [2020-12-22 13:50:11,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:50:11,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:50:11,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464599002] [2020-12-22 13:50:11,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:50:11,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:50:11,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:50:11,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:50:11,209 INFO L87 Difference]: Start difference. First operand 76838 states and 104609 transitions. Second operand 3 states. [2020-12-22 13:50:14,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:50:14,629 INFO L93 Difference]: Finished difference Result 230413 states and 313720 transitions. [2020-12-22 13:50:14,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:50:14,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 13:50:14,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:50:15,463 INFO L225 Difference]: With dead ends: 230413 [2020-12-22 13:50:15,463 INFO L226 Difference]: Without dead ends: 153615 [2020-12-22 13:50:15,621 INFO L677 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 [2020-12-22 13:50:15,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153615 states. [2020-12-22 13:50:19,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153615 to 153578. [2020-12-22 13:50:19,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153578 states. [2020-12-22 13:50:20,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153578 states to 153578 states and 209122 transitions. [2020-12-22 13:50:20,034 INFO L78 Accepts]: Start accepts. Automaton has 153578 states and 209122 transitions. Word has length 64 [2020-12-22 13:50:20,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:50:20,036 INFO L481 AbstractCegarLoop]: Abstraction has 153578 states and 209122 transitions. [2020-12-22 13:50:20,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:50:20,036 INFO L276 IsEmpty]: Start isEmpty. Operand 153578 states and 209122 transitions. [2020-12-22 13:50:20,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 13:50:20,038 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:50:20,039 INFO L422 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] [2020-12-22 13:50:20,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:50:20,045 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:50:20,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:50:20,045 INFO L82 PathProgramCache]: Analyzing trace with hash -257397806, now seen corresponding path program 1 times [2020-12-22 13:50:20,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:50:20,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17736448] [2020-12-22 13:50:20,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:20,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:50:20,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17736448] [2020-12-22 13:50:20,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:50:20,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:50:20,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293450807] [2020-12-22 13:50:20,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:50:20,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:50:20,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:50:20,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:50:20,755 INFO L87 Difference]: Start difference. First operand 153578 states and 209122 transitions. Second operand 3 states. [2020-12-22 13:50:24,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:50:24,814 INFO L93 Difference]: Finished difference Result 307131 states and 418221 transitions. [2020-12-22 13:50:24,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:50:24,815 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 13:50:24,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:50:25,657 INFO L225 Difference]: With dead ends: 307131 [2020-12-22 13:50:25,658 INFO L226 Difference]: Without dead ends: 153581 [2020-12-22 13:50:25,922 INFO L677 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 [2020-12-22 13:50:26,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153581 states. [2020-12-22 13:50:29,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153581 to 153581. [2020-12-22 13:50:29,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153581 states. [2020-12-22 13:50:29,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153581 states to 153581 states and 209125 transitions. [2020-12-22 13:50:29,561 INFO L78 Accepts]: Start accepts. Automaton has 153581 states and 209125 transitions. Word has length 66 [2020-12-22 13:50:29,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:50:29,561 INFO L481 AbstractCegarLoop]: Abstraction has 153581 states and 209125 transitions. [2020-12-22 13:50:29,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:50:29,562 INFO L276 IsEmpty]: Start isEmpty. Operand 153581 states and 209125 transitions. [2020-12-22 13:50:29,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 13:50:29,564 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:50:29,564 INFO L422 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] [2020-12-22 13:50:29,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 13:50:29,565 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:50:29,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:50:29,566 INFO L82 PathProgramCache]: Analyzing trace with hash 299255453, now seen corresponding path program 1 times [2020-12-22 13:50:29,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:50:29,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286247569] [2020-12-22 13:50:29,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:30,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:50:30,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286247569] [2020-12-22 13:50:30,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46909968] [2020-12-22 13:50:30,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:51:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:51:01,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 2106 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 13:51:01,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:51:01,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:51:01,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:51:01,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-12-22 13:51:01,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712210263] [2020-12-22 13:51:01,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:51:01,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:51:01,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:51:01,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:51:01,275 INFO L87 Difference]: Start difference. First operand 153581 states and 209125 transitions. Second operand 6 states. [2020-12-22 13:51:05,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:51:05,829 INFO L93 Difference]: Finished difference Result 307136 states and 418226 transitions. [2020-12-22 13:51:05,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:51:05,830 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-12-22 13:51:05,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:51:06,594 INFO L225 Difference]: With dead ends: 307136 [2020-12-22 13:51:06,595 INFO L226 Difference]: Without dead ends: 153584 [2020-12-22 13:51:06,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:51:07,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153584 states. [2020-12-22 13:51:12,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153584 to 153584. [2020-12-22 13:51:12,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153584 states. [2020-12-22 13:51:12,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153584 states to 153584 states and 209128 transitions. [2020-12-22 13:51:12,529 INFO L78 Accepts]: Start accepts. Automaton has 153584 states and 209128 transitions. Word has length 69 [2020-12-22 13:51:12,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:51:12,530 INFO L481 AbstractCegarLoop]: Abstraction has 153584 states and 209128 transitions. [2020-12-22 13:51:12,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:51:12,530 INFO L276 IsEmpty]: Start isEmpty. Operand 153584 states and 209128 transitions. [2020-12-22 13:51:12,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 13:51:12,532 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:51:12,532 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:51:12,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 13:51:12,737 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:51:12,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:51:12,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1079573618, now seen corresponding path program 2 times [2020-12-22 13:51:12,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:51:12,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702927281] [2020-12-22 13:51:12,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:51:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:51:13,252 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:51:13,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702927281] [2020-12-22 13:51:13,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907421225] [2020-12-22 13:51:13,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:52:01,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 13:52:01,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:52:02,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 2088 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 13:52:02,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:52:02,310 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 13:52:02,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:52:02,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2020-12-22 13:52:02,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253661406] [2020-12-22 13:52:02,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:52:02,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:52:02,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:52:02,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:52:02,312 INFO L87 Difference]: Start difference. First operand 153584 states and 209128 transitions. Second operand 3 states. [2020-12-22 13:52:05,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:52:05,690 INFO L93 Difference]: Finished difference Result 307132 states and 418219 transitions. [2020-12-22 13:52:05,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:52:05,691 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-22 13:52:05,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:52:06,541 INFO L225 Difference]: With dead ends: 307132 [2020-12-22 13:52:06,541 INFO L226 Difference]: Without dead ends: 153586 [2020-12-22 13:52:06,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:52:07,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153586 states.