/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-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:11:38,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:11:38,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:11:38,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:11:38,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:11:38,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:11:38,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:11:38,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:11:38,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:11:38,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:11:38,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:11:38,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:11:38,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:11:38,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:11:38,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:11:38,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:11:38,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:11:38,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:11:38,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:11:38,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:11:38,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:11:38,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:11:38,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:11:38,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:11:38,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:11:38,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:11:38,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:11:38,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:11:38,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:11:38,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:11:38,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:11:38,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:11:38,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:11:38,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:11:38,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:11:38,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:11:38,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:11:38,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:11:38,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:11:38,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:11:38,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:11:38,203 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:11:38,249 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:11:38,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:11:38,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:11:38,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:11:38,254 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:11:38,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:11:38,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:11:38,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:11:38,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:11:38,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:11:38,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:11:38,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:11:38,255 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:11:38,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:11:38,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:11:38,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:11:38,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:11:38,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:11:38,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:11:38,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:11:38,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:11:38,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:11:38,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:11:38,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:11:38,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:11:38,258 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:11:38,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:11:38,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:11:38,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:11:38,641 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:11:38,642 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:11:38,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i [2020-12-22 13:11:38,731 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/903c13b86/e6cdb3cfd59c4ce0a6a9df984689bfe9/FLAGbc3641725 [2020-12-22 13:11:39,873 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:11:39,873 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i [2020-12-22 13:11:39,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/903c13b86/e6cdb3cfd59c4ce0a6a9df984689bfe9/FLAGbc3641725 [2020-12-22 13:11:40,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/903c13b86/e6cdb3cfd59c4ce0a6a9df984689bfe9 [2020-12-22 13:11:40,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:11:40,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:11:40,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:11:40,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:11:40,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:11:40,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:11:40" (1/1) ... [2020-12-22 13:11:40,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1adc2979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:11:40, skipping insertion in model container [2020-12-22 13:11:40,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:11:40" (1/1) ... [2020-12-22 13:11:40,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:11:40,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:11:41,348 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-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i[158290,158303] [2020-12-22 13:11:42,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:11:42,541 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:11:42,820 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-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i[158290,158303] [2020-12-22 13:11:43,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:11:43,578 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:11:43,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:11:43 WrapperNode [2020-12-22 13:11:43,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:11:43,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:11:43,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:11:43,581 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:11:43,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:11:43" (1/1) ... [2020-12-22 13:11:43,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:11:43" (1/1) ... [2020-12-22 13:11:44,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:11:44,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:11:44,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:11:44,940 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:11:44,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:11:43" (1/1) ... [2020-12-22 13:11:44,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:11:43" (1/1) ... [2020-12-22 13:11:45,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:11:43" (1/1) ... [2020-12-22 13:11:45,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:11:43" (1/1) ... [2020-12-22 13:11:46,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:11:43" (1/1) ... [2020-12-22 13:11:46,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:11:43" (1/1) ... [2020-12-22 13:11:46,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:11:43" (1/1) ... [2020-12-22 13:11:46,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:11:46,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:11:46,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:11:46,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:11:46,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:11:43" (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 13:11:46,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:11:46,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:11:46,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:11:46,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:11:46,976 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd_nopm [2020-12-22 13:11:46,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2020-12-22 13:11:46,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:11:46,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:11:46,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:11:46,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:11:46,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:11:46,977 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd [2020-12-22 13:11:46,977 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd_nopm [2020-12-22 13:11:46,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:11:46,977 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd [2020-12-22 13:11:46,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:11:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:11:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:11:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:11:46,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:12:38,556 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:12:38,557 INFO L299 CfgBuilder]: Removed 4671 assume(true) statements. [2020-12-22 13:12:38,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:12:38 BoogieIcfgContainer [2020-12-22 13:12:38,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:12:38,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:12:38,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:12:38,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:12:38,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:11:40" (1/3) ... [2020-12-22 13:12:38,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f900432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:12:38, skipping insertion in model container [2020-12-22 13:12:38,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:11:43" (2/3) ... [2020-12-22 13:12:38,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f900432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:12:38, skipping insertion in model container [2020-12-22 13:12:38,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:12:38" (3/3) ... [2020-12-22 13:12:38,575 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i [2020-12-22 13:12:38,582 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:12:38,590 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 13:12:38,611 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 13:12:38,659 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:12:38,659 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:12:38,659 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:12:38,659 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:12:38,659 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:12:38,659 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:12:38,660 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:12:38,660 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:12:38,754 INFO L276 IsEmpty]: Start isEmpty. Operand 7107 states. [2020-12-22 13:12:38,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 13:12:38,765 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:12:38,766 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] [2020-12-22 13:12:38,766 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:12:38,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:12:38,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1203932107, now seen corresponding path program 1 times [2020-12-22 13:12:38,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:12:38,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516341611] [2020-12-22 13:12:38,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:12:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:12:39,709 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 13:12:39,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516341611] [2020-12-22 13:12:39,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:12:39,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:12:39,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060209281] [2020-12-22 13:12:39,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:12:39,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:12:39,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:12:39,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:12:39,735 INFO L87 Difference]: Start difference. First operand 7107 states. Second operand 3 states. [2020-12-22 13:12:40,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:12:40,160 INFO L93 Difference]: Finished difference Result 14211 states and 20575 transitions. [2020-12-22 13:12:40,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:12:40,162 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-12-22 13:12:40,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:12:40,236 INFO L225 Difference]: With dead ends: 14211 [2020-12-22 13:12:40,236 INFO L226 Difference]: Without dead ends: 6771 [2020-12-22 13:12:40,262 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 13:12:40,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6771 states. [2020-12-22 13:12:40,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6771 to 6771. [2020-12-22 13:12:40,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6771 states. [2020-12-22 13:12:40,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6771 states to 6771 states and 9575 transitions. [2020-12-22 13:12:40,531 INFO L78 Accepts]: Start accepts. Automaton has 6771 states and 9575 transitions. Word has length 40 [2020-12-22 13:12:40,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:12:40,532 INFO L481 AbstractCegarLoop]: Abstraction has 6771 states and 9575 transitions. [2020-12-22 13:12:40,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:12:40,532 INFO L276 IsEmpty]: Start isEmpty. Operand 6771 states and 9575 transitions. [2020-12-22 13:12:40,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 13:12:40,541 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:12:40,541 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] [2020-12-22 13:12:40,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:12:40,544 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:12:40,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:12:40,545 INFO L82 PathProgramCache]: Analyzing trace with hash -588484349, now seen corresponding path program 1 times [2020-12-22 13:12:40,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:12:40,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922436859] [2020-12-22 13:12:40,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:12:40,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:12:40,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:12:40,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922436859] [2020-12-22 13:12:40,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:12:40,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:12:40,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160268413] [2020-12-22 13:12:40,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:12:40,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:12:40,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:12:40,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:12:40,977 INFO L87 Difference]: Start difference. First operand 6771 states and 9575 transitions. Second operand 3 states. [2020-12-22 13:12:41,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:12:41,239 INFO L93 Difference]: Finished difference Result 13488 states and 19087 transitions. [2020-12-22 13:12:41,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:12:41,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-12-22 13:12:41,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:12:41,276 INFO L225 Difference]: With dead ends: 13488 [2020-12-22 13:12:41,277 INFO L226 Difference]: Without dead ends: 6774 [2020-12-22 13:12:41,290 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 13:12:41,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6774 states. [2020-12-22 13:12:41,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6774 to 6774. [2020-12-22 13:12:41,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6774 states. [2020-12-22 13:12:41,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6774 states to 6774 states and 9578 transitions. [2020-12-22 13:12:41,487 INFO L78 Accepts]: Start accepts. Automaton has 6774 states and 9578 transitions. Word has length 42 [2020-12-22 13:12:41,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:12:41,488 INFO L481 AbstractCegarLoop]: Abstraction has 6774 states and 9578 transitions. [2020-12-22 13:12:41,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:12:41,488 INFO L276 IsEmpty]: Start isEmpty. Operand 6774 states and 9578 transitions. [2020-12-22 13:12:41,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 13:12:41,492 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:12:41,492 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] [2020-12-22 13:12:41,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:12:41,493 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:12:41,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:12:41,496 INFO L82 PathProgramCache]: Analyzing trace with hash -365845251, now seen corresponding path program 1 times [2020-12-22 13:12:41,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:12:41,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993951026] [2020-12-22 13:12:41,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:12:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:12:42,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:12:42,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993951026] [2020-12-22 13:12:42,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:12:42,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:12:42,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343168662] [2020-12-22 13:12:42,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:12:42,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:12:42,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:12:42,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:12:42,031 INFO L87 Difference]: Start difference. First operand 6774 states and 9578 transitions. Second operand 3 states. [2020-12-22 13:12:44,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:12:44,553 INFO L93 Difference]: Finished difference Result 20129 states and 28506 transitions. [2020-12-22 13:12:44,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:12:44,554 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-12-22 13:12:44,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:12:44,647 INFO L225 Difference]: With dead ends: 20129 [2020-12-22 13:12:44,647 INFO L226 Difference]: Without dead ends: 13417 [2020-12-22 13:12:44,669 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 13:12:44,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13417 states. [2020-12-22 13:12:44,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13417 to 13413. [2020-12-22 13:12:44,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13413 states. [2020-12-22 13:12:45,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13413 states to 13413 states and 18998 transitions. [2020-12-22 13:12:45,031 INFO L78 Accepts]: Start accepts. Automaton has 13413 states and 18998 transitions. Word has length 43 [2020-12-22 13:12:45,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:12:45,032 INFO L481 AbstractCegarLoop]: Abstraction has 13413 states and 18998 transitions. [2020-12-22 13:12:45,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:12:45,032 INFO L276 IsEmpty]: Start isEmpty. Operand 13413 states and 18998 transitions. [2020-12-22 13:12:45,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 13:12:45,034 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:12:45,034 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] [2020-12-22 13:12:45,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:12:45,035 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:12:45,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:12:45,036 INFO L82 PathProgramCache]: Analyzing trace with hash 472623201, now seen corresponding path program 1 times [2020-12-22 13:12:45,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:12:45,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720434877] [2020-12-22 13:12:45,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:12:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:12:45,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:12:45,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720434877] [2020-12-22 13:12:45,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:12:45,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:12:45,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162149643] [2020-12-22 13:12:45,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:12:45,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:12:45,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:12:45,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:12:45,378 INFO L87 Difference]: Start difference. First operand 13413 states and 18998 transitions. Second operand 3 states. [2020-12-22 13:12:49,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:12:49,614 INFO L93 Difference]: Finished difference Result 32158 states and 45584 transitions. [2020-12-22 13:12:49,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:12:49,615 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-12-22 13:12:49,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:12:49,670 INFO L225 Difference]: With dead ends: 32158 [2020-12-22 13:12:49,670 INFO L226 Difference]: Without dead ends: 18807 [2020-12-22 13:12:49,698 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 13:12:49,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18807 states. [2020-12-22 13:12:50,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18807 to 18790. [2020-12-22 13:12:50,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18790 states. [2020-12-22 13:12:50,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18790 states to 18790 states and 26643 transitions. [2020-12-22 13:12:50,209 INFO L78 Accepts]: Start accepts. Automaton has 18790 states and 26643 transitions. Word has length 48 [2020-12-22 13:12:50,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:12:50,212 INFO L481 AbstractCegarLoop]: Abstraction has 18790 states and 26643 transitions. [2020-12-22 13:12:50,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:12:50,213 INFO L276 IsEmpty]: Start isEmpty. Operand 18790 states and 26643 transitions. [2020-12-22 13:12:50,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 13:12:50,215 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:12:50,215 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] [2020-12-22 13:12:50,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:12:50,215 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:12:50,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:12:50,216 INFO L82 PathProgramCache]: Analyzing trace with hash 615270734, now seen corresponding path program 1 times [2020-12-22 13:12:50,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:12:50,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836161142] [2020-12-22 13:12:50,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:12:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:12:50,939 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 13:12:50,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836161142] [2020-12-22 13:12:50,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007534953] [2020-12-22 13:12:50,940 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 13:12:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:12:54,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 3074 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 13:12:54,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:12:54,468 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 13:12:54,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:12:54,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-12-22 13:12:54,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377883075] [2020-12-22 13:12:54,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:12:54,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:12:54,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:12:54,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:12:54,473 INFO L87 Difference]: Start difference. First operand 18790 states and 26643 transitions. Second operand 6 states. [2020-12-22 13:12:55,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:12:55,343 INFO L93 Difference]: Finished difference Result 37544 states and 53258 transitions. [2020-12-22 13:12:55,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 13:12:55,344 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-12-22 13:12:55,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:12:55,396 INFO L225 Difference]: With dead ends: 37544 [2020-12-22 13:12:55,396 INFO L226 Difference]: Without dead ends: 18809 [2020-12-22 13:12:55,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:12:55,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18809 states. [2020-12-22 13:12:55,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18809 to 18809. [2020-12-22 13:12:55,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18809 states. [2020-12-22 13:12:55,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18809 states to 18809 states and 26662 transitions. [2020-12-22 13:12:55,959 INFO L78 Accepts]: Start accepts. Automaton has 18809 states and 26662 transitions. Word has length 50 [2020-12-22 13:12:55,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:12:55,959 INFO L481 AbstractCegarLoop]: Abstraction has 18809 states and 26662 transitions. [2020-12-22 13:12:55,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:12:55,959 INFO L276 IsEmpty]: Start isEmpty. Operand 18809 states and 26662 transitions. [2020-12-22 13:12:55,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 13:12:55,962 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:12:55,963 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] [2020-12-22 13:12:56,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:12:56,164 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:12:56,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:12:56,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1248766976, now seen corresponding path program 2 times [2020-12-22 13:12:56,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:12:56,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729499911] [2020-12-22 13:12:56,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:12:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:12:56,707 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 13:12:56,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729499911] [2020-12-22 13:12:56,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999511922] [2020-12-22 13:12:56,708 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