/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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--st.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 14:11:06,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 14:11:06,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 14:11:06,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 14:11:06,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 14:11:06,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 14:11:06,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 14:11:06,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 14:11:06,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 14:11:06,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 14:11:06,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 14:11:06,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 14:11:06,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 14:11:06,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 14:11:06,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 14:11:06,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 14:11:06,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 14:11:06,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 14:11:06,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 14:11:06,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 14:11:06,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 14:11:06,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 14:11:06,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 14:11:06,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 14:11:06,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 14:11:06,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 14:11:06,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 14:11:06,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 14:11:06,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 14:11:06,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 14:11:06,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 14:11:06,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 14:11:06,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 14:11:06,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 14:11:06,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 14:11:06,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 14:11:06,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 14:11:06,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 14:11:06,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 14:11:06,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 14:11:06,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 14:11:06,500 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 14:11:06,557 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 14:11:06,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 14:11:06,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 14:11:06,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 14:11:06,562 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 14:11:06,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 14:11:06,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 14:11:06,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 14:11:06,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 14:11:06,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 14:11:06,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 14:11:06,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 14:11:06,565 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 14:11:06,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 14:11:06,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 14:11:06,566 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 14:11:06,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 14:11:06,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 14:11:06,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 14:11:06,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 14:11:06,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 14:11:06,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 14:11:06,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 14:11:06,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 14:11:06,568 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 14:11:06,568 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 14:11:07,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 14:11:07,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 14:11:07,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 14:11:07,061 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 14:11:07,061 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 14:11:07,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--st.ko-entry_point.cil.out.i [2020-12-22 14:11:07,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8e7654b7/cac0624d3dbd443f936aca9147e7cbbe/FLAG75773e6cd [2020-12-22 14:11:08,386 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 14:11:08,386 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--st.ko-entry_point.cil.out.i [2020-12-22 14:11:08,471 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8e7654b7/cac0624d3dbd443f936aca9147e7cbbe/FLAG75773e6cd [2020-12-22 14:11:08,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8e7654b7/cac0624d3dbd443f936aca9147e7cbbe [2020-12-22 14:11:08,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 14:11:08,610 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 14:11:08,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 14:11:08,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 14:11:08,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 14:11:08,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:11:08" (1/1) ... [2020-12-22 14:11:08,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67b1fe1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:11:08, skipping insertion in model container [2020-12-22 14:11:08,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:11:08" (1/1) ... [2020-12-22 14:11:08,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 14:11:08,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 14:11:11,987 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--st.ko-entry_point.cil.out.i[342799,342812] [2020-12-22 14:11:12,048 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2020-12-22 14:11:12,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:11:12,094 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 14:11:12,662 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--st.ko-entry_point.cil.out.i[342799,342812] [2020-12-22 14:11:12,671 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2020-12-22 14:11:12,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:11:13,192 INFO L208 MainTranslator]: Completed translation [2020-12-22 14:11:13,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:11:13 WrapperNode [2020-12-22 14:11:13,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 14:11:13,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 14:11:13,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 14:11:13,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 14:11:13,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:11:13" (1/1) ... [2020-12-22 14:11:13,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:11:13" (1/1) ... [2020-12-22 14:11:17,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 14:11:17,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 14:11:17,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 14:11:17,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 14:11:17,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:11:13" (1/1) ... [2020-12-22 14:11:17,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:11:13" (1/1) ... [2020-12-22 14:11:18,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:11:13" (1/1) ... [2020-12-22 14:11:18,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:11:13" (1/1) ... [2020-12-22 14:11:21,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:11:13" (1/1) ... [2020-12-22 14:11:21,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:11:13" (1/1) ... [2020-12-22 14:11:22,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:11:13" (1/1) ... [2020-12-22 14:11:22,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 14:11:22,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 14:11:22,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 14:11:22,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 14:11:22,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:11:13" (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 14:11:23,218 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-12-22 14:11:23,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 14:11:23,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 14:11:23,218 INFO L130 BoogieDeclarations]: Found specification of procedure st_int_ioctl [2020-12-22 14:11:23,219 INFO L138 BoogieDeclarations]: Found implementation of procedure st_int_ioctl [2020-12-22 14:11:23,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 14:11:23,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 14:11:23,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2020-12-22 14:11:23,219 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2020-12-22 14:11:23,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 14:11:23,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 14:11:23,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 14:11:23,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 14:11:23,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 14:11:23,220 INFO L130 BoogieDeclarations]: Found specification of procedure enlarge_buffer [2020-12-22 14:11:23,220 INFO L138 BoogieDeclarations]: Found implementation of procedure enlarge_buffer [2020-12-22 14:11:23,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 14:11:23,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 14:11:23,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 14:11:23,221 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 14:11:23,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 14:11:23,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 14:11:23,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 14:13:30,544 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 14:13:30,544 INFO L299 CfgBuilder]: Removed 13566 assume(true) statements. [2020-12-22 14:13:30,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:13:30 BoogieIcfgContainer [2020-12-22 14:13:30,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 14:13:30,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 14:13:30,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 14:13:30,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 14:13:30,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:11:08" (1/3) ... [2020-12-22 14:13:30,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48840f60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:13:30, skipping insertion in model container [2020-12-22 14:13:30,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:11:13" (2/3) ... [2020-12-22 14:13:30,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48840f60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:13:30, skipping insertion in model container [2020-12-22 14:13:30,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:13:30" (3/3) ... [2020-12-22 14:13:30,577 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--st.ko-entry_point.cil.out.i [2020-12-22 14:13:30,584 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 14:13:30,596 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 14:13:30,619 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 14:13:30,714 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 14:13:30,714 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 14:13:30,714 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 14:13:30,714 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 14:13:30,714 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 14:13:30,715 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 14:13:30,715 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 14:13:30,715 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 14:13:30,943 INFO L276 IsEmpty]: Start isEmpty. Operand 17762 states. [2020-12-22 14:13:30,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-12-22 14:13:30,964 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:13:30,965 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:30,965 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:13:30,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:13:30,972 INFO L82 PathProgramCache]: Analyzing trace with hash 125872945, now seen corresponding path program 1 times [2020-12-22 14:13:30,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:13:30,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819519765] [2020-12-22 14:13:30,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:13:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:13:32,886 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 14:13:32,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819519765] [2020-12-22 14:13:32,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:13:32,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:13:32,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644513915] [2020-12-22 14:13:32,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 14:13:32,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:13:32,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 14:13:32,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 14:13:32,919 INFO L87 Difference]: Start difference. First operand 17762 states. Second operand 2 states. [2020-12-22 14:13:33,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:13:33,826 INFO L93 Difference]: Finished difference Result 35520 states and 51787 transitions. [2020-12-22 14:13:33,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 14:13:33,828 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 281 [2020-12-22 14:13:33,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:13:33,977 INFO L225 Difference]: With dead ends: 35520 [2020-12-22 14:13:33,977 INFO L226 Difference]: Without dead ends: 17735 [2020-12-22 14:13:34,051 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 14:13:34,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17735 states. [2020-12-22 14:13:34,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17735 to 17735. [2020-12-22 14:13:34,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17735 states. [2020-12-22 14:13:34,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17735 states to 17735 states and 25240 transitions. [2020-12-22 14:13:34,891 INFO L78 Accepts]: Start accepts. Automaton has 17735 states and 25240 transitions. Word has length 281 [2020-12-22 14:13:34,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:13:34,894 INFO L481 AbstractCegarLoop]: Abstraction has 17735 states and 25240 transitions. [2020-12-22 14:13:34,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 14:13:34,894 INFO L276 IsEmpty]: Start isEmpty. Operand 17735 states and 25240 transitions. [2020-12-22 14:13:34,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-12-22 14:13:34,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:13:34,910 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:34,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 14:13:34,911 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:13:34,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:13:34,914 INFO L82 PathProgramCache]: Analyzing trace with hash -960407475, now seen corresponding path program 1 times [2020-12-22 14:13:34,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:13:34,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474547523] [2020-12-22 14:13:34,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:13:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:13:36,514 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 14:13:36,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474547523] [2020-12-22 14:13:36,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:13:36,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:13:36,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267687968] [2020-12-22 14:13:36,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:13:36,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:13:36,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:13:36,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:13:36,524 INFO L87 Difference]: Start difference. First operand 17735 states and 25240 transitions. Second operand 3 states. [2020-12-22 14:13:40,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:13:40,103 INFO L93 Difference]: Finished difference Result 52629 states and 75116 transitions. [2020-12-22 14:13:40,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:13:40,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 281 [2020-12-22 14:13:40,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:13:40,477 INFO L225 Difference]: With dead ends: 52629 [2020-12-22 14:13:40,477 INFO L226 Difference]: Without dead ends: 35153 [2020-12-22 14:13:40,531 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 14:13:40,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35153 states. [2020-12-22 14:13:41,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35153 to 35153. [2020-12-22 14:13:41,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35153 states. [2020-12-22 14:13:41,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35153 states to 35153 states and 50140 transitions. [2020-12-22 14:13:41,614 INFO L78 Accepts]: Start accepts. Automaton has 35153 states and 50140 transitions. Word has length 281 [2020-12-22 14:13:41,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:13:41,616 INFO L481 AbstractCegarLoop]: Abstraction has 35153 states and 50140 transitions. [2020-12-22 14:13:41,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:13:41,616 INFO L276 IsEmpty]: Start isEmpty. Operand 35153 states and 50140 transitions. [2020-12-22 14:13:41,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-12-22 14:13:41,622 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:13:41,623 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:41,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 14:13:41,623 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:13:41,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:13:41,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1297674011, now seen corresponding path program 1 times [2020-12-22 14:13:41,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:13:41,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191284256] [2020-12-22 14:13:41,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:13:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:13:43,285 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 14:13:43,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191284256] [2020-12-22 14:13:43,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:13:43,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:13:43,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924737009] [2020-12-22 14:13:43,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:13:43,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:13:43,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:13:43,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:13:43,297 INFO L87 Difference]: Start difference. First operand 35153 states and 50140 transitions. Second operand 3 states. [2020-12-22 14:13:44,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:13:44,239 INFO L93 Difference]: Finished difference Result 70047 states and 100013 transitions. [2020-12-22 14:13:44,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:13:44,240 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 286 [2020-12-22 14:13:44,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:13:44,363 INFO L225 Difference]: With dead ends: 70047 [2020-12-22 14:13:44,363 INFO L226 Difference]: Without dead ends: 35153 [2020-12-22 14:13:44,435 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 14:13:44,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35153 states. [2020-12-22 14:13:45,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35153 to 35153. [2020-12-22 14:13:45,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35153 states. [2020-12-22 14:13:45,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35153 states to 35153 states and 50139 transitions. [2020-12-22 14:13:45,657 INFO L78 Accepts]: Start accepts. Automaton has 35153 states and 50139 transitions. Word has length 286 [2020-12-22 14:13:45,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:13:45,658 INFO L481 AbstractCegarLoop]: Abstraction has 35153 states and 50139 transitions. [2020-12-22 14:13:45,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:13:45,659 INFO L276 IsEmpty]: Start isEmpty. Operand 35153 states and 50139 transitions. [2020-12-22 14:13:45,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-12-22 14:13:45,664 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:13:45,664 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:45,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 14:13:45,665 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:13:45,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:13:45,665 INFO L82 PathProgramCache]: Analyzing trace with hash 286556761, now seen corresponding path program 1 times [2020-12-22 14:13:45,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:13:45,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150138861] [2020-12-22 14:13:45,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:13:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:13:47,203 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 14:13:47,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150138861] [2020-12-22 14:13:47,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:13:47,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:13:47,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405612521] [2020-12-22 14:13:47,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:13:47,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:13:47,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:13:47,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:13:47,206 INFO L87 Difference]: Start difference. First operand 35153 states and 50139 transitions. Second operand 3 states. [2020-12-22 14:13:48,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:13:48,502 INFO L93 Difference]: Finished difference Result 70047 states and 100011 transitions. [2020-12-22 14:13:48,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:13:48,502 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 286 [2020-12-22 14:13:48,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:13:48,629 INFO L225 Difference]: With dead ends: 70047 [2020-12-22 14:13:48,629 INFO L226 Difference]: Without dead ends: 35153 [2020-12-22 14:13:48,686 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 14:13:48,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35153 states. [2020-12-22 14:13:49,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35153 to 35153. [2020-12-22 14:13:49,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35153 states. [2020-12-22 14:13:49,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35153 states to 35153 states and 50138 transitions. [2020-12-22 14:13:49,824 INFO L78 Accepts]: Start accepts. Automaton has 35153 states and 50138 transitions. Word has length 286 [2020-12-22 14:13:49,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:13:49,824 INFO L481 AbstractCegarLoop]: Abstraction has 35153 states and 50138 transitions. [2020-12-22 14:13:49,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:13:49,825 INFO L276 IsEmpty]: Start isEmpty. Operand 35153 states and 50138 transitions. [2020-12-22 14:13:49,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-12-22 14:13:49,830 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:13:49,830 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:49,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 14:13:49,831 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:13:49,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:13:49,831 INFO L82 PathProgramCache]: Analyzing trace with hash -300249253, now seen corresponding path program 1 times [2020-12-22 14:13:49,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:13:49,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809861473] [2020-12-22 14:13:49,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:13:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:13:51,313 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 14:13:51,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809861473] [2020-12-22 14:13:51,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:13:51,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:13:51,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80097794] [2020-12-22 14:13:51,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:13:51,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:13:51,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:13:51,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:13:51,316 INFO L87 Difference]: Start difference. First operand 35153 states and 50138 transitions. Second operand 3 states. [2020-12-22 14:13:52,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:13:52,682 INFO L93 Difference]: Finished difference Result 70047 states and 100009 transitions. [2020-12-22 14:13:52,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:13:52,683 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 286 [2020-12-22 14:13:52,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:13:52,779 INFO L225 Difference]: With dead ends: 70047 [2020-12-22 14:13:52,780 INFO L226 Difference]: Without dead ends: 35153 [2020-12-22 14:13:52,841 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 14:13:52,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35153 states. [2020-12-22 14:13:53,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35153 to 35153. [2020-12-22 14:13:53,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35153 states. [2020-12-22 14:13:54,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35153 states to 35153 states and 50137 transitions. [2020-12-22 14:13:54,240 INFO L78 Accepts]: Start accepts. Automaton has 35153 states and 50137 transitions. Word has length 286 [2020-12-22 14:13:54,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:13:54,244 INFO L481 AbstractCegarLoop]: Abstraction has 35153 states and 50137 transitions. [2020-12-22 14:13:54,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:13:54,244 INFO L276 IsEmpty]: Start isEmpty. Operand 35153 states and 50137 transitions. [2020-12-22 14:13:54,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-12-22 14:13:54,255 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:13:54,255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:54,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 14:13:54,256 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:13:54,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:13:54,256 INFO L82 PathProgramCache]: Analyzing trace with hash 400815325, now seen corresponding path program 1 times [2020-12-22 14:13:54,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:13:54,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605324554] [2020-12-22 14:13:54,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:13:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:13:55,634 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 14:13:55,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605324554] [2020-12-22 14:13:55,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:13:55,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:13:55,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234855580] [2020-12-22 14:13:55,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 14:13:55,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:13:55,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 14:13:55,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:13:55,637 INFO L87 Difference]: Start difference. First operand 35153 states and 50137 transitions. Second operand 5 states. [2020-12-22 14:14:06,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:14:06,200 INFO L93 Difference]: Finished difference Result 101757 states and 145499 transitions. [2020-12-22 14:14:06,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 14:14:06,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 286 [2020-12-22 14:14:06,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:14:06,490 INFO L225 Difference]: With dead ends: 101757 [2020-12-22 14:14:06,490 INFO L226 Difference]: Without dead ends: 66863 [2020-12-22 14:14:06,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 14:14:06,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66863 states. [2020-12-22 14:14:08,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66863 to 66842. [2020-12-22 14:14:08,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66842 states. [2020-12-22 14:14:09,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66842 states to 66842 states and 94530 transitions. [2020-12-22 14:14:09,336 INFO L78 Accepts]: Start accepts. Automaton has 66842 states and 94530 transitions. Word has length 286 [2020-12-22 14:14:09,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:14:09,337 INFO L481 AbstractCegarLoop]: Abstraction has 66842 states and 94530 transitions. [2020-12-22 14:14:09,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 14:14:09,337 INFO L276 IsEmpty]: Start isEmpty. Operand 66842 states and 94530 transitions. [2020-12-22 14:14:09,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-12-22 14:14:09,347 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:14:09,348 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:14:09,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 14:14:09,348 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:14:09,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:14:09,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1080873695, now seen corresponding path program 1 times [2020-12-22 14:14:09,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:14:09,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095083205] [2020-12-22 14:14:09,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:14:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:14:10,747 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 14:14:10,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095083205] [2020-12-22 14:14:10,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:14:10,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:14:10,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922210497] [2020-12-22 14:14:10,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:14:10,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:14:10,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:14:10,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:14:10,751 INFO L87 Difference]: Start difference. First operand 66842 states and 94530 transitions. Second operand 3 states. [2020-12-22 14:14:12,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:14:12,143 INFO L93 Difference]: Finished difference Result 66842 states and 94530 transitions. [2020-12-22 14:14:12,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:14:12,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 286 [2020-12-22 14:14:12,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:14:12,145 INFO L225 Difference]: With dead ends: 66842 [2020-12-22 14:14:12,145 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 14:14:12,256 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 14:14:12,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 14:14:12,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 14:14:12,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 14:14:12,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 14:14:12,258 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 286 [2020-12-22 14:14:12,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:14:12,258 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 14:14:12,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:14:12,258 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 14:14:12,259 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 14:14:12,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 14:14:12,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.