/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:49:00,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:49:00,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:49:01,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:49:01,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:49:01,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:49:01,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:49:01,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:49:01,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:49:01,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:49:01,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:49:01,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:49:01,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:49:01,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:49:01,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:49:01,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:49:01,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:49:01,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:49:01,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:49:01,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:49:01,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:49:01,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:49:01,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:49:01,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:49:01,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:49:01,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:49:01,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:49:01,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:49:01,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:49:01,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:49:01,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:49:01,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:49:01,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:49:01,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:49:01,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:49:01,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:49:01,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:49:01,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:49:01,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:49:01,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:49:01,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:49:01,170 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:49:01,224 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:49:01,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:49:01,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:49:01,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:49:01,229 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:49:01,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:49:01,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:49:01,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:49:01,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:49:01,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:49:01,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:49:01,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:49:01,232 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:49:01,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:49:01,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:49:01,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:49:01,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:49:01,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:49:01,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:49:01,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:49:01,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:49:01,235 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:49:01,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:49:01,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:49:01,235 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:49:01,236 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:49:01,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:49:01,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:49:01,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:49:01,760 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:49:01,761 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:49:01,762 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-12-22 13:49:01,863 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b802bb7ab/bb428ae0c91443a2b7f61f9094b440c4/FLAG14c770a27 [2020-12-22 13:49:03,053 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:49:03,054 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-12-22 13:49:03,104 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b802bb7ab/bb428ae0c91443a2b7f61f9094b440c4/FLAG14c770a27 [2020-12-22 13:49:03,476 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b802bb7ab/bb428ae0c91443a2b7f61f9094b440c4 [2020-12-22 13:49:03,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:49:03,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:49:03,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:49:03,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:49:03,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:49:03,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:49:03" (1/1) ... [2020-12-22 13:49:03,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39f79107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:03, skipping insertion in model container [2020-12-22 13:49:03,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:49:03" (1/1) ... [2020-12-22 13:49:03,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:49:03,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:49:04,960 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i[188986,188999] [2020-12-22 13:49:05,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:49:05,061 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:49:05,362 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i[188986,188999] [2020-12-22 13:49:05,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:49:05,566 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:49:05,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:05 WrapperNode [2020-12-22 13:49:05,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:49:05,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:49:05,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:49:05,569 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:49:05,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:05" (1/1) ... [2020-12-22 13:49:05,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:05" (1/1) ... [2020-12-22 13:49:05,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:49:05,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:49:05,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:49:05,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:49:05,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:05" (1/1) ... [2020-12-22 13:49:05,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:05" (1/1) ... [2020-12-22 13:49:05,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:05" (1/1) ... [2020-12-22 13:49:05,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:05" (1/1) ... [2020-12-22 13:49:06,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:05" (1/1) ... [2020-12-22 13:49:06,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:05" (1/1) ... [2020-12-22 13:49:06,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:05" (1/1) ... [2020-12-22 13:49:06,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:49:06,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:49:06,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:49:06,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:49:06,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:05" (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 13:49:06,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:49:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2020-12-22 13:49:06,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2020-12-22 13:49:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:49:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:49:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:49:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-12-22 13:49:06,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-12-22 13:49:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2020-12-22 13:49:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:49:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure rx_submit [2020-12-22 13:49:06,269 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_submit [2020-12-22 13:49:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:49:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:49:06,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:49:06,270 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 13:49:06,270 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:49:06,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:49:06,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:49:06,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:49:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:49:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:49:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:49:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:49:06,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:49:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure rx_complete [2020-12-22 13:49:06,271 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_complete [2020-12-22 13:49:12,604 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:49:12,605 INFO L299 CfgBuilder]: Removed 477 assume(true) statements. [2020-12-22 13:49:12,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:49:12 BoogieIcfgContainer [2020-12-22 13:49:12,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:49:12,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:49:12,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:49:12,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:49:12,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:49:03" (1/3) ... [2020-12-22 13:49:12,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278dfbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:49:12, skipping insertion in model container [2020-12-22 13:49:12,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:05" (2/3) ... [2020-12-22 13:49:12,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278dfbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:49:12, skipping insertion in model container [2020-12-22 13:49:12,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:49:12" (3/3) ... [2020-12-22 13:49:12,618 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-12-22 13:49:12,626 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:49:12,634 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 13:49:12,657 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 13:49:12,713 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:49:12,713 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:49:12,714 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:49:12,714 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:49:12,714 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:49:12,714 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:49:12,714 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:49:12,714 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:49:12,760 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states. [2020-12-22 13:49:12,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 13:49:12,770 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:12,771 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] [2020-12-22 13:49:12,772 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:12,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:12,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1490593226, now seen corresponding path program 1 times [2020-12-22 13:49:12,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:12,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901486970] [2020-12-22 13:49:12,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:13,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:49:13,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901486970] [2020-12-22 13:49:13,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:13,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:49:13,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237130592] [2020-12-22 13:49:13,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 13:49:13,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:13,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 13:49:13,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 13:49:13,525 INFO L87 Difference]: Start difference. First operand 500 states. Second operand 2 states. [2020-12-22 13:49:13,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:13,686 INFO L93 Difference]: Finished difference Result 996 states and 1409 transitions. [2020-12-22 13:49:13,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 13:49:13,688 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31 [2020-12-22 13:49:13,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:13,709 INFO L225 Difference]: With dead ends: 996 [2020-12-22 13:49:13,710 INFO L226 Difference]: Without dead ends: 489 [2020-12-22 13:49:13,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 13:49:13,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2020-12-22 13:49:13,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2020-12-22 13:49:13,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-12-22 13:49:13,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 667 transitions. [2020-12-22 13:49:13,821 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 667 transitions. Word has length 31 [2020-12-22 13:49:13,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:13,822 INFO L481 AbstractCegarLoop]: Abstraction has 489 states and 667 transitions. [2020-12-22 13:49:13,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 13:49:13,822 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 667 transitions. [2020-12-22 13:49:13,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 13:49:13,824 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:13,824 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] [2020-12-22 13:49:13,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:49:13,825 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:13,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:13,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1477252530, now seen corresponding path program 1 times [2020-12-22 13:49:13,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:13,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625709540] [2020-12-22 13:49:13,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:14,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:49:14,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625709540] [2020-12-22 13:49:14,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:14,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:14,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809069065] [2020-12-22 13:49:14,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:14,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:14,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:14,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:14,042 INFO L87 Difference]: Start difference. First operand 489 states and 667 transitions. Second operand 3 states. [2020-12-22 13:49:15,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:15,208 INFO L93 Difference]: Finished difference Result 1399 states and 1929 transitions. [2020-12-22 13:49:15,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:15,210 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-12-22 13:49:15,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:15,223 INFO L225 Difference]: With dead ends: 1399 [2020-12-22 13:49:15,223 INFO L226 Difference]: Without dead ends: 931 [2020-12-22 13:49:15,227 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 13:49:15,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2020-12-22 13:49:15,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 931. [2020-12-22 13:49:15,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 931 states. [2020-12-22 13:49:15,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1282 transitions. [2020-12-22 13:49:15,307 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1282 transitions. Word has length 31 [2020-12-22 13:49:15,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:15,308 INFO L481 AbstractCegarLoop]: Abstraction has 931 states and 1282 transitions. [2020-12-22 13:49:15,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:15,308 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1282 transitions. [2020-12-22 13:49:15,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 13:49:15,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:15,321 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 13:49:15,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:49:15,324 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:15,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:15,326 INFO L82 PathProgramCache]: Analyzing trace with hash -528626007, now seen corresponding path program 1 times [2020-12-22 13:49:15,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:15,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494488046] [2020-12-22 13:49:15,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:15,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:49:15,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494488046] [2020-12-22 13:49:15,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:15,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:15,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84779925] [2020-12-22 13:49:15,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:15,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:15,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:15,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:15,618 INFO L87 Difference]: Start difference. First operand 931 states and 1282 transitions. Second operand 3 states. [2020-12-22 13:49:15,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:15,708 INFO L93 Difference]: Finished difference Result 961 states and 1310 transitions. [2020-12-22 13:49:15,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:15,710 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-12-22 13:49:15,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:15,720 INFO L225 Difference]: With dead ends: 961 [2020-12-22 13:49:15,720 INFO L226 Difference]: Without dead ends: 946 [2020-12-22 13:49:15,722 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 13:49:15,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2020-12-22 13:49:15,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 931. [2020-12-22 13:49:15,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 931 states. [2020-12-22 13:49:15,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1281 transitions. [2020-12-22 13:49:15,782 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1281 transitions. Word has length 40 [2020-12-22 13:49:15,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:15,784 INFO L481 AbstractCegarLoop]: Abstraction has 931 states and 1281 transitions. [2020-12-22 13:49:15,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:15,784 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1281 transitions. [2020-12-22 13:49:15,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 13:49:15,791 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:15,791 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 13:49:15,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:49:15,792 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:15,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:15,794 INFO L82 PathProgramCache]: Analyzing trace with hash -528566425, now seen corresponding path program 1 times [2020-12-22 13:49:15,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:15,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976039400] [2020-12-22 13:49:15,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:16,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:49:16,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976039400] [2020-12-22 13:49:16,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:16,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:49:16,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429580609] [2020-12-22 13:49:16,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:16,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:16,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:16,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:16,105 INFO L87 Difference]: Start difference. First operand 931 states and 1281 transitions. Second operand 3 states. [2020-12-22 13:49:16,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:16,352 INFO L93 Difference]: Finished difference Result 2749 states and 3844 transitions. [2020-12-22 13:49:16,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:16,354 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-12-22 13:49:16,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:16,369 INFO L225 Difference]: With dead ends: 2749 [2020-12-22 13:49:16,369 INFO L226 Difference]: Without dead ends: 1839 [2020-12-22 13:49:16,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:16,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2020-12-22 13:49:16,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1827. [2020-12-22 13:49:16,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1827 states. [2020-12-22 13:49:16,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2532 transitions. [2020-12-22 13:49:16,488 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2532 transitions. Word has length 40 [2020-12-22 13:49:16,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:16,489 INFO L481 AbstractCegarLoop]: Abstraction has 1827 states and 2532 transitions. [2020-12-22 13:49:16,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:16,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2532 transitions. [2020-12-22 13:49:16,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 13:49:16,492 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:16,492 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] [2020-12-22 13:49:16,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:49:16,493 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:16,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:16,493 INFO L82 PathProgramCache]: Analyzing trace with hash 794317441, now seen corresponding path program 1 times [2020-12-22 13:49:16,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:16,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8821608] [2020-12-22 13:49:16,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:16,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:49:16,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8821608] [2020-12-22 13:49:16,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:16,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:49:16,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200505493] [2020-12-22 13:49:16,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:16,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:16,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:16,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:16,761 INFO L87 Difference]: Start difference. First operand 1827 states and 2532 transitions. Second operand 3 states. [2020-12-22 13:49:16,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:16,863 INFO L93 Difference]: Finished difference Result 1827 states and 2532 transitions. [2020-12-22 13:49:16,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:16,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-12-22 13:49:16,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:16,880 INFO L225 Difference]: With dead ends: 1827 [2020-12-22 13:49:16,880 INFO L226 Difference]: Without dead ends: 1825 [2020-12-22 13:49:16,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:16,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1825 states. [2020-12-22 13:49:17,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1825 to 1825. [2020-12-22 13:49:17,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1825 states. [2020-12-22 13:49:17,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 2530 transitions. [2020-12-22 13:49:17,048 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 2530 transitions. Word has length 41 [2020-12-22 13:49:17,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:17,049 INFO L481 AbstractCegarLoop]: Abstraction has 1825 states and 2530 transitions. [2020-12-22 13:49:17,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:17,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 2530 transitions. [2020-12-22 13:49:17,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 13:49:17,051 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:17,051 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 13:49:17,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:49:17,051 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:17,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:17,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1145955663, now seen corresponding path program 1 times [2020-12-22 13:49:17,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:17,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633316439] [2020-12-22 13:49:17,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:17,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:49:17,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633316439] [2020-12-22 13:49:17,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:17,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:49:17,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228929657] [2020-12-22 13:49:17,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:17,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:17,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:17,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:17,221 INFO L87 Difference]: Start difference. First operand 1825 states and 2530 transitions. Second operand 3 states. [2020-12-22 13:49:17,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:17,325 INFO L93 Difference]: Finished difference Result 1825 states and 2530 transitions. [2020-12-22 13:49:17,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:17,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-12-22 13:49:17,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:17,339 INFO L225 Difference]: With dead ends: 1825 [2020-12-22 13:49:17,340 INFO L226 Difference]: Without dead ends: 1823 [2020-12-22 13:49:17,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:17,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2020-12-22 13:49:17,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 1823. [2020-12-22 13:49:17,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1823 states. [2020-12-22 13:49:17,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 2528 transitions. [2020-12-22 13:49:17,459 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 2528 transitions. Word has length 42 [2020-12-22 13:49:17,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:17,462 INFO L481 AbstractCegarLoop]: Abstraction has 1823 states and 2528 transitions. [2020-12-22 13:49:17,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:17,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 2528 transitions. [2020-12-22 13:49:17,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 13:49:17,465 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:17,465 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 13:49:17,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 13:49:17,466 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:17,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:17,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1164879733, now seen corresponding path program 1 times [2020-12-22 13:49:17,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:17,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242667365] [2020-12-22 13:49:17,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:17,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:49:17,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242667365] [2020-12-22 13:49:17,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:17,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:49:17,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004552381] [2020-12-22 13:49:17,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:17,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:17,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:17,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:17,670 INFO L87 Difference]: Start difference. First operand 1823 states and 2528 transitions. Second operand 3 states. [2020-12-22 13:49:17,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:17,767 INFO L93 Difference]: Finished difference Result 1823 states and 2528 transitions. [2020-12-22 13:49:17,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:17,768 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-12-22 13:49:17,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:17,781 INFO L225 Difference]: With dead ends: 1823 [2020-12-22 13:49:17,781 INFO L226 Difference]: Without dead ends: 1821 [2020-12-22 13:49:17,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:17,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2020-12-22 13:49:17,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1821. [2020-12-22 13:49:17,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1821 states. [2020-12-22 13:49:17,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2526 transitions. [2020-12-22 13:49:17,895 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2526 transitions. Word has length 43 [2020-12-22 13:49:17,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:17,895 INFO L481 AbstractCegarLoop]: Abstraction has 1821 states and 2526 transitions. [2020-12-22 13:49:17,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:17,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2526 transitions. [2020-12-22 13:49:17,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 13:49:17,897 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:17,897 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] [2020-12-22 13:49:17,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 13:49:17,897 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:17,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:17,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1751525893, now seen corresponding path program 1 times [2020-12-22 13:49:17,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:17,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197034679] [2020-12-22 13:49:17,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:18,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:49:18,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197034679] [2020-12-22 13:49:18,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:18,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:49:18,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391419533] [2020-12-22 13:49:18,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:18,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:18,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:18,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:18,081 INFO L87 Difference]: Start difference. First operand 1821 states and 2526 transitions. Second operand 3 states. [2020-12-22 13:49:18,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:18,180 INFO L93 Difference]: Finished difference Result 1821 states and 2526 transitions. [2020-12-22 13:49:18,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:18,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-22 13:49:18,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:18,193 INFO L225 Difference]: With dead ends: 1821 [2020-12-22 13:49:18,194 INFO L226 Difference]: Without dead ends: 1812 [2020-12-22 13:49:18,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:18,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2020-12-22 13:49:18,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1812. [2020-12-22 13:49:18,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1812 states. [2020-12-22 13:49:18,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 2515 transitions. [2020-12-22 13:49:18,310 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 2515 transitions. Word has length 44 [2020-12-22 13:49:18,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:18,311 INFO L481 AbstractCegarLoop]: Abstraction has 1812 states and 2515 transitions. [2020-12-22 13:49:18,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:18,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 2515 transitions. [2020-12-22 13:49:18,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 13:49:18,316 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:18,316 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:18,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 13:49:18,316 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:18,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:18,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1024522123, now seen corresponding path program 1 times [2020-12-22 13:49:18,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:18,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871277921] [2020-12-22 13:49:18,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:18,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:49:18,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871277921] [2020-12-22 13:49:18,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:18,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:18,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958528775] [2020-12-22 13:49:18,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:18,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:18,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:18,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:18,457 INFO L87 Difference]: Start difference. First operand 1812 states and 2515 transitions. Second operand 3 states. [2020-12-22 13:49:18,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:18,800 INFO L93 Difference]: Finished difference Result 5058 states and 7059 transitions. [2020-12-22 13:49:18,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:18,801 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 13:49:18,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:18,825 INFO L225 Difference]: With dead ends: 5058 [2020-12-22 13:49:18,825 INFO L226 Difference]: Without dead ends: 3267 [2020-12-22 13:49:18,833 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 13:49:18,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2020-12-22 13:49:19,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 3082. [2020-12-22 13:49:19,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3082 states. [2020-12-22 13:49:19,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3082 states to 3082 states and 4345 transitions. [2020-12-22 13:49:19,066 INFO L78 Accepts]: Start accepts. Automaton has 3082 states and 4345 transitions. Word has length 65 [2020-12-22 13:49:19,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:19,066 INFO L481 AbstractCegarLoop]: Abstraction has 3082 states and 4345 transitions. [2020-12-22 13:49:19,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:19,067 INFO L276 IsEmpty]: Start isEmpty. Operand 3082 states and 4345 transitions. [2020-12-22 13:49:19,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 13:49:19,071 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:19,071 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:19,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 13:49:19,071 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:19,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:19,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1935014145, now seen corresponding path program 1 times [2020-12-22 13:49:19,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:19,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259112606] [2020-12-22 13:49:19,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:19,214 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:49:19,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259112606] [2020-12-22 13:49:19,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:19,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:19,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642353860] [2020-12-22 13:49:19,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:19,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:19,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:19,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:19,218 INFO L87 Difference]: Start difference. First operand 3082 states and 4345 transitions. Second operand 3 states. [2020-12-22 13:49:19,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:19,715 INFO L93 Difference]: Finished difference Result 8639 states and 12214 transitions. [2020-12-22 13:49:19,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:19,716 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 116 [2020-12-22 13:49:19,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:19,753 INFO L225 Difference]: With dead ends: 8639 [2020-12-22 13:49:19,753 INFO L226 Difference]: Without dead ends: 5578 [2020-12-22 13:49:19,764 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 13:49:19,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5578 states. [2020-12-22 13:49:20,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5578 to 5566. [2020-12-22 13:49:20,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5566 states. [2020-12-22 13:49:20,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5566 states to 5566 states and 7873 transitions. [2020-12-22 13:49:20,170 INFO L78 Accepts]: Start accepts. Automaton has 5566 states and 7873 transitions. Word has length 116 [2020-12-22 13:49:20,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:20,170 INFO L481 AbstractCegarLoop]: Abstraction has 5566 states and 7873 transitions. [2020-12-22 13:49:20,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:20,171 INFO L276 IsEmpty]: Start isEmpty. Operand 5566 states and 7873 transitions. [2020-12-22 13:49:20,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-12-22 13:49:20,185 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:20,185 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:20,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 13:49:20,186 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:20,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:20,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1056287104, now seen corresponding path program 1 times [2020-12-22 13:49:20,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:20,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318924045] [2020-12-22 13:49:20,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:20,366 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 13:49:20,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318924045] [2020-12-22 13:49:20,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:20,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:20,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60073593] [2020-12-22 13:49:20,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:20,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:20,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:20,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:20,371 INFO L87 Difference]: Start difference. First operand 5566 states and 7873 transitions. Second operand 3 states. [2020-12-22 13:49:20,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:20,914 INFO L93 Difference]: Finished difference Result 13248 states and 18749 transitions. [2020-12-22 13:49:20,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:20,918 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2020-12-22 13:49:20,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:20,970 INFO L225 Difference]: With dead ends: 13248 [2020-12-22 13:49:20,970 INFO L226 Difference]: Without dead ends: 7703 [2020-12-22 13:49:20,987 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 13:49:20,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7703 states. [2020-12-22 13:49:21,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7703 to 5646. [2020-12-22 13:49:21,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5646 states. [2020-12-22 13:49:21,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5646 states to 5646 states and 8001 transitions. [2020-12-22 13:49:21,353 INFO L78 Accepts]: Start accepts. Automaton has 5646 states and 8001 transitions. Word has length 124 [2020-12-22 13:49:21,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:21,354 INFO L481 AbstractCegarLoop]: Abstraction has 5646 states and 8001 transitions. [2020-12-22 13:49:21,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:21,354 INFO L276 IsEmpty]: Start isEmpty. Operand 5646 states and 8001 transitions. [2020-12-22 13:49:21,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 13:49:21,361 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:21,361 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:21,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 13:49:21,361 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:21,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:21,362 INFO L82 PathProgramCache]: Analyzing trace with hash 2071442461, now seen corresponding path program 1 times [2020-12-22 13:49:21,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:21,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128277072] [2020-12-22 13:49:21,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:21,638 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:49:21,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128277072] [2020-12-22 13:49:21,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:21,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:21,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463470899] [2020-12-22 13:49:21,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:21,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:21,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:21,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:21,641 INFO L87 Difference]: Start difference. First operand 5646 states and 8001 transitions. Second operand 3 states. [2020-12-22 13:49:22,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:22,870 INFO L93 Difference]: Finished difference Result 11892 states and 16928 transitions. [2020-12-22 13:49:22,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:22,871 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2020-12-22 13:49:22,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:22,921 INFO L225 Difference]: With dead ends: 11892 [2020-12-22 13:49:22,921 INFO L226 Difference]: Without dead ends: 6267 [2020-12-22 13:49:22,939 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 13:49:22,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6267 states. [2020-12-22 13:49:23,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6267 to 6170. [2020-12-22 13:49:23,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6170 states. [2020-12-22 13:49:23,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6170 states to 6170 states and 8754 transitions. [2020-12-22 13:49:23,271 INFO L78 Accepts]: Start accepts. Automaton has 6170 states and 8754 transitions. Word has length 131 [2020-12-22 13:49:23,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:23,271 INFO L481 AbstractCegarLoop]: Abstraction has 6170 states and 8754 transitions. [2020-12-22 13:49:23,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:23,272 INFO L276 IsEmpty]: Start isEmpty. Operand 6170 states and 8754 transitions. [2020-12-22 13:49:23,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-22 13:49:23,278 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:23,278 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:23,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 13:49:23,279 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:23,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:23,279 INFO L82 PathProgramCache]: Analyzing trace with hash 834194963, now seen corresponding path program 1 times [2020-12-22 13:49:23,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:23,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304934093] [2020-12-22 13:49:23,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 13:49:23,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304934093] [2020-12-22 13:49:23,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:23,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:23,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785602754] [2020-12-22 13:49:23,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:23,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:23,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:23,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:23,575 INFO L87 Difference]: Start difference. First operand 6170 states and 8754 transitions. Second operand 3 states. [2020-12-22 13:49:24,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:24,845 INFO L93 Difference]: Finished difference Result 14492 states and 20686 transitions. [2020-12-22 13:49:24,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:24,846 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 145 [2020-12-22 13:49:24,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:24,884 INFO L225 Difference]: With dead ends: 14492 [2020-12-22 13:49:24,885 INFO L226 Difference]: Without dead ends: 8343 [2020-12-22 13:49:24,903 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 13:49:24,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8343 states. [2020-12-22 13:49:25,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8343 to 8214. [2020-12-22 13:49:25,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8214 states. [2020-12-22 13:49:25,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8214 states to 8214 states and 11719 transitions. [2020-12-22 13:49:25,465 INFO L78 Accepts]: Start accepts. Automaton has 8214 states and 11719 transitions. Word has length 145 [2020-12-22 13:49:25,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:25,466 INFO L481 AbstractCegarLoop]: Abstraction has 8214 states and 11719 transitions. [2020-12-22 13:49:25,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:25,466 INFO L276 IsEmpty]: Start isEmpty. Operand 8214 states and 11719 transitions. [2020-12-22 13:49:25,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 13:49:25,477 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:25,477 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:25,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 13:49:25,478 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:25,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:25,478 INFO L82 PathProgramCache]: Analyzing trace with hash -229559451, now seen corresponding path program 1 times [2020-12-22 13:49:25,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:25,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853586920] [2020-12-22 13:49:25,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:25,964 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:49:25,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853586920] [2020-12-22 13:49:25,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262225706] [2020-12-22 13:49:25,965 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 13:49:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:27,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 2028 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 13:49:27,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:49:27,894 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:49:27,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:49:27,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2020-12-22 13:49:27,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600801708] [2020-12-22 13:49:27,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:49:27,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:27,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:49:27,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:49:27,897 INFO L87 Difference]: Start difference. First operand 8214 states and 11719 transitions. Second operand 5 states. [2020-12-22 13:49:31,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:31,055 INFO L93 Difference]: Finished difference Result 32792 states and 46805 transitions. [2020-12-22 13:49:31,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:49:31,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-12-22 13:49:31,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:31,211 INFO L225 Difference]: With dead ends: 32792 [2020-12-22 13:49:31,211 INFO L226 Difference]: Without dead ends: 32787 [2020-12-22 13:49:31,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:49:31,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32787 states. [2020-12-22 13:49:33,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32787 to 32678. [2020-12-22 13:49:33,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32678 states. [2020-12-22 13:49:33,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32678 states to 32678 states and 46659 transitions. [2020-12-22 13:49:33,422 INFO L78 Accepts]: Start accepts. Automaton has 32678 states and 46659 transitions. Word has length 157 [2020-12-22 13:49:33,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:33,423 INFO L481 AbstractCegarLoop]: Abstraction has 32678 states and 46659 transitions. [2020-12-22 13:49:33,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:49:33,423 INFO L276 IsEmpty]: Start isEmpty. Operand 32678 states and 46659 transitions. [2020-12-22 13:49:33,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-12-22 13:49:33,464 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:33,465 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:33,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 13:49:33,679 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:33,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:33,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1276816620, now seen corresponding path program 1 times [2020-12-22 13:49:33,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:33,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769652080] [2020-12-22 13:49:33,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:34,197 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-22 13:49:34,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769652080] [2020-12-22 13:49:34,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:34,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:34,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740024877] [2020-12-22 13:49:34,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:34,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:34,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:34,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:34,202 INFO L87 Difference]: Start difference. First operand 32678 states and 46659 transitions. Second operand 3 states. [2020-12-22 13:49:36,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:36,740 INFO L93 Difference]: Finished difference Result 65335 states and 93295 transitions. [2020-12-22 13:49:36,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:36,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 166 [2020-12-22 13:49:36,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:37,028 INFO L225 Difference]: With dead ends: 65335 [2020-12-22 13:49:37,029 INFO L226 Difference]: Without dead ends: 30780 [2020-12-22 13:49:37,110 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 13:49:37,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30780 states. [2020-12-22 13:49:38,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30780 to 30765. [2020-12-22 13:49:38,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30765 states. [2020-12-22 13:49:38,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30765 states to 30765 states and 43800 transitions. [2020-12-22 13:49:38,832 INFO L78 Accepts]: Start accepts. Automaton has 30765 states and 43800 transitions. Word has length 166 [2020-12-22 13:49:38,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:38,833 INFO L481 AbstractCegarLoop]: Abstraction has 30765 states and 43800 transitions. [2020-12-22 13:49:38,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:38,834 INFO L276 IsEmpty]: Start isEmpty. Operand 30765 states and 43800 transitions. [2020-12-22 13:49:38,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-12-22 13:49:38,867 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:38,868 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:38,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 13:49:38,868 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:38,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:38,869 INFO L82 PathProgramCache]: Analyzing trace with hash -601656494, now seen corresponding path program 1 times [2020-12-22 13:49:38,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:38,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242274847] [2020-12-22 13:49:38,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:39,071 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-22 13:49:39,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242274847] [2020-12-22 13:49:39,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:39,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:39,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603026327] [2020-12-22 13:49:39,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:39,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:39,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:39,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:39,074 INFO L87 Difference]: Start difference. First operand 30765 states and 43800 transitions. Second operand 3 states. [2020-12-22 13:49:41,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:41,137 INFO L93 Difference]: Finished difference Result 45049 states and 64181 transitions. [2020-12-22 13:49:41,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:41,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 166 [2020-12-22 13:49:41,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:41,201 INFO L225 Difference]: With dead ends: 45049 [2020-12-22 13:49:41,201 INFO L226 Difference]: Without dead ends: 14304 [2020-12-22 13:49:41,258 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 13:49:41,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14304 states. [2020-12-22 13:49:42,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14304 to 14304. [2020-12-22 13:49:42,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14304 states. [2020-12-22 13:49:42,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14304 states to 14304 states and 20402 transitions. [2020-12-22 13:49:42,183 INFO L78 Accepts]: Start accepts. Automaton has 14304 states and 20402 transitions. Word has length 166 [2020-12-22 13:49:42,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:42,184 INFO L481 AbstractCegarLoop]: Abstraction has 14304 states and 20402 transitions. [2020-12-22 13:49:42,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:42,184 INFO L276 IsEmpty]: Start isEmpty. Operand 14304 states and 20402 transitions. [2020-12-22 13:49:42,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-12-22 13:49:42,199 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:42,200 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:42,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 13:49:42,200 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:42,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:42,201 INFO L82 PathProgramCache]: Analyzing trace with hash -999291299, now seen corresponding path program 1 times [2020-12-22 13:49:42,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:42,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878415397] [2020-12-22 13:49:42,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:42,415 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 13:49:42,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878415397] [2020-12-22 13:49:42,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:42,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:49:42,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112348490] [2020-12-22 13:49:42,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:49:42,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:42,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:49:42,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:49:42,418 INFO L87 Difference]: Start difference. First operand 14304 states and 20402 transitions. Second operand 4 states. [2020-12-22 13:49:43,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:43,905 INFO L93 Difference]: Finished difference Result 47244 states and 67270 transitions. [2020-12-22 13:49:43,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:49:43,906 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-12-22 13:49:43,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:44,031 INFO L225 Difference]: With dead ends: 47244 [2020-12-22 13:49:44,032 INFO L226 Difference]: Without dead ends: 32986 [2020-12-22 13:49:44,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:49:44,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32986 states. [2020-12-22 13:49:45,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32986 to 14310. [2020-12-22 13:49:45,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14310 states. [2020-12-22 13:49:45,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14310 states to 14310 states and 20406 transitions. [2020-12-22 13:49:45,274 INFO L78 Accepts]: Start accepts. Automaton has 14310 states and 20406 transitions. Word has length 167 [2020-12-22 13:49:45,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:45,274 INFO L481 AbstractCegarLoop]: Abstraction has 14310 states and 20406 transitions. [2020-12-22 13:49:45,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:49:45,275 INFO L276 IsEmpty]: Start isEmpty. Operand 14310 states and 20406 transitions. [2020-12-22 13:49:45,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-12-22 13:49:45,287 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:45,288 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:45,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 13:49:45,288 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:45,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:45,289 INFO L82 PathProgramCache]: Analyzing trace with hash -177029537, now seen corresponding path program 1 times [2020-12-22 13:49:45,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:45,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552791442] [2020-12-22 13:49:45,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:45,452 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-22 13:49:45,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552791442] [2020-12-22 13:49:45,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:45,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:45,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774138073] [2020-12-22 13:49:45,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:45,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:45,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:45,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:45,457 INFO L87 Difference]: Start difference. First operand 14310 states and 20406 transitions. Second operand 3 states. [2020-12-22 13:49:46,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:46,473 INFO L93 Difference]: Finished difference Result 21213 states and 30253 transitions. [2020-12-22 13:49:46,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:46,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2020-12-22 13:49:46,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:46,501 INFO L225 Difference]: With dead ends: 21213 [2020-12-22 13:49:46,501 INFO L226 Difference]: Without dead ends: 6949 [2020-12-22 13:49:46,524 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 13:49:46,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6949 states. [2020-12-22 13:49:46,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6949 to 6571. [2020-12-22 13:49:46,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6571 states. [2020-12-22 13:49:46,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6571 states to 6571 states and 9327 transitions. [2020-12-22 13:49:46,924 INFO L78 Accepts]: Start accepts. Automaton has 6571 states and 9327 transitions. Word has length 167 [2020-12-22 13:49:46,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:46,924 INFO L481 AbstractCegarLoop]: Abstraction has 6571 states and 9327 transitions. [2020-12-22 13:49:46,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:46,925 INFO L276 IsEmpty]: Start isEmpty. Operand 6571 states and 9327 transitions. [2020-12-22 13:49:46,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-12-22 13:49:46,939 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:46,939 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:46,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 13:49:46,939 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:46,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:46,940 INFO L82 PathProgramCache]: Analyzing trace with hash 400400968, now seen corresponding path program 1 times [2020-12-22 13:49:46,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:46,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839037055] [2020-12-22 13:49:46,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:47,265 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-12-22 13:49:47,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839037055] [2020-12-22 13:49:47,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:47,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:49:47,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36365998] [2020-12-22 13:49:47,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:49:47,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:47,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:49:47,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:49:47,273 INFO L87 Difference]: Start difference. First operand 6571 states and 9327 transitions. Second operand 4 states. [2020-12-22 13:49:48,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:48,308 INFO L93 Difference]: Finished difference Result 15605 states and 22076 transitions. [2020-12-22 13:49:48,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:49:48,309 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 181 [2020-12-22 13:49:48,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:48,342 INFO L225 Difference]: With dead ends: 15605 [2020-12-22 13:49:48,342 INFO L226 Difference]: Without dead ends: 9048 [2020-12-22 13:49:48,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:49:48,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9048 states. [2020-12-22 13:49:48,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9048 to 6571. [2020-12-22 13:49:48,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6571 states. [2020-12-22 13:49:48,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6571 states to 6571 states and 9311 transitions. [2020-12-22 13:49:48,914 INFO L78 Accepts]: Start accepts. Automaton has 6571 states and 9311 transitions. Word has length 181 [2020-12-22 13:49:48,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:48,915 INFO L481 AbstractCegarLoop]: Abstraction has 6571 states and 9311 transitions. [2020-12-22 13:49:48,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:49:48,915 INFO L276 IsEmpty]: Start isEmpty. Operand 6571 states and 9311 transitions. [2020-12-22 13:49:48,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-12-22 13:49:48,929 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:48,930 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:48,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 13:49:48,930 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:48,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:48,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1810616284, now seen corresponding path program 1 times [2020-12-22 13:49:48,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:48,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138888264] [2020-12-22 13:49:48,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:49,359 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-12-22 13:49:49,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138888264] [2020-12-22 13:49:49,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:49,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:49,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959846265] [2020-12-22 13:49:49,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:49,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:49,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:49,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:49,362 INFO L87 Difference]: Start difference. First operand 6571 states and 9311 transitions. Second operand 3 states. [2020-12-22 13:49:49,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:49,871 INFO L93 Difference]: Finished difference Result 15627 states and 22164 transitions. [2020-12-22 13:49:49,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:49,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2020-12-22 13:49:49,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:49,890 INFO L225 Difference]: With dead ends: 15627 [2020-12-22 13:49:49,892 INFO L226 Difference]: Without dead ends: 9102 [2020-12-22 13:49:49,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 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 13:49:49,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9102 states. [2020-12-22 13:49:50,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9102 to 6859. [2020-12-22 13:49:50,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6859 states. [2020-12-22 13:49:50,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6859 states to 6859 states and 9791 transitions. [2020-12-22 13:49:50,481 INFO L78 Accepts]: Start accepts. Automaton has 6859 states and 9791 transitions. Word has length 183 [2020-12-22 13:49:50,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:50,482 INFO L481 AbstractCegarLoop]: Abstraction has 6859 states and 9791 transitions. [2020-12-22 13:49:50,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:50,482 INFO L276 IsEmpty]: Start isEmpty. Operand 6859 states and 9791 transitions. [2020-12-22 13:49:50,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-12-22 13:49:50,494 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:50,495 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:50,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 13:49:50,495 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:50,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:50,496 INFO L82 PathProgramCache]: Analyzing trace with hash 98481553, now seen corresponding path program 1 times [2020-12-22 13:49:50,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:50,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880913925] [2020-12-22 13:49:50,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:50,814 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-12-22 13:49:50,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880913925] [2020-12-22 13:49:50,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:50,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:49:50,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992025380] [2020-12-22 13:49:50,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:49:50,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:50,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:49:50,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:49:50,817 INFO L87 Difference]: Start difference. First operand 6859 states and 9791 transitions. Second operand 5 states. [2020-12-22 13:49:52,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:52,444 INFO L93 Difference]: Finished difference Result 25365 states and 35824 transitions. [2020-12-22 13:49:52,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 13:49:52,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-12-22 13:49:52,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:52,490 INFO L225 Difference]: With dead ends: 25365 [2020-12-22 13:49:52,490 INFO L226 Difference]: Without dead ends: 18552 [2020-12-22 13:49:52,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:49:52,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18552 states. [2020-12-22 13:49:52,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18552 to 6907. [2020-12-22 13:49:52,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6907 states. [2020-12-22 13:49:52,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6907 states to 6907 states and 9839 transitions. [2020-12-22 13:49:53,000 INFO L78 Accepts]: Start accepts. Automaton has 6907 states and 9839 transitions. Word has length 190 [2020-12-22 13:49:53,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:53,000 INFO L481 AbstractCegarLoop]: Abstraction has 6907 states and 9839 transitions. [2020-12-22 13:49:53,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:49:53,001 INFO L276 IsEmpty]: Start isEmpty. Operand 6907 states and 9839 transitions. [2020-12-22 13:49:53,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-12-22 13:49:53,012 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:53,012 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:53,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 13:49:53,013 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:53,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:53,014 INFO L82 PathProgramCache]: Analyzing trace with hash 465447445, now seen corresponding path program 1 times [2020-12-22 13:49:53,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:53,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558405280] [2020-12-22 13:49:53,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:53,368 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-12-22 13:49:53,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558405280] [2020-12-22 13:49:53,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:53,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:49:53,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269321935] [2020-12-22 13:49:53,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:49:53,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:53,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:49:53,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:49:53,371 INFO L87 Difference]: Start difference. First operand 6907 states and 9839 transitions. Second operand 5 states. [2020-12-22 13:49:55,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:55,378 INFO L93 Difference]: Finished difference Result 25605 states and 36180 transitions. [2020-12-22 13:49:55,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 13:49:55,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2020-12-22 13:49:55,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:55,418 INFO L225 Difference]: With dead ends: 25605 [2020-12-22 13:49:55,419 INFO L226 Difference]: Without dead ends: 18744 [2020-12-22 13:49:55,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:49:55,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18744 states. [2020-12-22 13:49:55,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18744 to 6955. [2020-12-22 13:49:55,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6955 states. [2020-12-22 13:49:55,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6955 states to 6955 states and 9887 transitions. [2020-12-22 13:49:55,951 INFO L78 Accepts]: Start accepts. Automaton has 6955 states and 9887 transitions. Word has length 192 [2020-12-22 13:49:55,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:55,952 INFO L481 AbstractCegarLoop]: Abstraction has 6955 states and 9887 transitions. [2020-12-22 13:49:55,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:49:55,952 INFO L276 IsEmpty]: Start isEmpty. Operand 6955 states and 9887 transitions. [2020-12-22 13:49:55,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-12-22 13:49:55,961 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:55,961 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:55,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 13:49:55,962 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:55,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:55,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1633326041, now seen corresponding path program 1 times [2020-12-22 13:49:55,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:55,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20917138] [2020-12-22 13:49:55,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:56,293 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-12-22 13:49:56,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20917138] [2020-12-22 13:49:56,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:56,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:49:56,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371978307] [2020-12-22 13:49:56,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:49:56,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:56,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:49:56,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:49:56,297 INFO L87 Difference]: Start difference. First operand 6955 states and 9887 transitions. Second operand 4 states. [2020-12-22 13:49:57,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:57,728 INFO L93 Difference]: Finished difference Result 20059 states and 28438 transitions. [2020-12-22 13:49:57,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:49:57,729 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 194 [2020-12-22 13:49:57,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:57,763 INFO L225 Difference]: With dead ends: 20059 [2020-12-22 13:49:57,763 INFO L226 Difference]: Without dead ends: 13150 [2020-12-22 13:49:57,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:49:57,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13150 states. [2020-12-22 13:49:58,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13150 to 7027. [2020-12-22 13:49:58,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7027 states. [2020-12-22 13:49:58,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7027 states to 7027 states and 9977 transitions. [2020-12-22 13:49:58,217 INFO L78 Accepts]: Start accepts. Automaton has 7027 states and 9977 transitions. Word has length 194 [2020-12-22 13:49:58,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:58,217 INFO L481 AbstractCegarLoop]: Abstraction has 7027 states and 9977 transitions. [2020-12-22 13:49:58,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:49:58,218 INFO L276 IsEmpty]: Start isEmpty. Operand 7027 states and 9977 transitions. [2020-12-22 13:49:58,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-12-22 13:49:58,226 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:58,227 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:58,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 13:49:58,227 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:58,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:58,228 INFO L82 PathProgramCache]: Analyzing trace with hash -902607243, now seen corresponding path program 1 times [2020-12-22 13:49:58,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:58,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130835409] [2020-12-22 13:49:58,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:58,839 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-12-22 13:49:58,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130835409] [2020-12-22 13:49:58,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:58,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:58,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821898478] [2020-12-22 13:49:58,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:58,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:58,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:58,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:58,841 INFO L87 Difference]: Start difference. First operand 7027 states and 9977 transitions. Second operand 3 states. [2020-12-22 13:49:59,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:59,397 INFO L93 Difference]: Finished difference Result 14040 states and 19941 transitions. [2020-12-22 13:49:59,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:59,398 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2020-12-22 13:49:59,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:59,412 INFO L225 Difference]: With dead ends: 14040 [2020-12-22 13:49:59,413 INFO L226 Difference]: Without dead ends: 7029 [2020-12-22 13:49:59,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:59,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7029 states. [2020-12-22 13:49:59,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7029 to 7029. [2020-12-22 13:49:59,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7029 states. [2020-12-22 13:49:59,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7029 states to 7029 states and 9979 transitions. [2020-12-22 13:49:59,851 INFO L78 Accepts]: Start accepts. Automaton has 7029 states and 9979 transitions. Word has length 196 [2020-12-22 13:49:59,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:59,851 INFO L481 AbstractCegarLoop]: Abstraction has 7029 states and 9979 transitions. [2020-12-22 13:49:59,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:59,852 INFO L276 IsEmpty]: Start isEmpty. Operand 7029 states and 9979 transitions. [2020-12-22 13:49:59,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-12-22 13:49:59,859 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:59,859 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:59,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 13:49:59,860 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:59,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:59,860 INFO L82 PathProgramCache]: Analyzing trace with hash -436605417, now seen corresponding path program 1 times [2020-12-22 13:49:59,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:59,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203411482] [2020-12-22 13:49:59,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:00,339 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-12-22 13:50:00,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203411482] [2020-12-22 13:50:00,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494282878] [2020-12-22 13:50:00,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:50:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:01,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 2256 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 13:50:01,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:50:02,337 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-12-22 13:50:02,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:50:02,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2020-12-22 13:50:02,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866248866] [2020-12-22 13:50:02,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 13:50:02,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:50:02,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 13:50:02,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:50:02,340 INFO L87 Difference]: Start difference. First operand 7029 states and 9979 transitions. Second operand 7 states. [2020-12-22 13:50:05,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:50:05,233 INFO L93 Difference]: Finished difference Result 32964 states and 46753 transitions. [2020-12-22 13:50:05,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 13:50:05,234 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 198 [2020-12-22 13:50:05,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:50:05,280 INFO L225 Difference]: With dead ends: 32964 [2020-12-22 13:50:05,281 INFO L226 Difference]: Without dead ends: 25983 [2020-12-22 13:50:05,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-12-22 13:50:05,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25983 states. [2020-12-22 13:50:05,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25983 to 7137. [2020-12-22 13:50:05,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7137 states. [2020-12-22 13:50:05,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7137 states to 7137 states and 10087 transitions. [2020-12-22 13:50:05,961 INFO L78 Accepts]: Start accepts. Automaton has 7137 states and 10087 transitions. Word has length 198 [2020-12-22 13:50:05,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:50:05,961 INFO L481 AbstractCegarLoop]: Abstraction has 7137 states and 10087 transitions. [2020-12-22 13:50:05,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 13:50:05,962 INFO L276 IsEmpty]: Start isEmpty. Operand 7137 states and 10087 transitions. [2020-12-22 13:50:05,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-12-22 13:50:05,967 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:50:05,968 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:50:06,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-22 13:50:06,169 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:50:06,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:50:06,170 INFO L82 PathProgramCache]: Analyzing trace with hash 264994457, now seen corresponding path program 1 times [2020-12-22 13:50:06,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:50:06,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314540942] [2020-12-22 13:50:06,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:06,582 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-12-22 13:50:06,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314540942] [2020-12-22 13:50:06,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286212687] [2020-12-22 13:50:06,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:50:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:09,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 2269 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 13:50:09,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:50:09,415 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-12-22 13:50:09,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:50:09,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2020-12-22 13:50:09,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656462051] [2020-12-22 13:50:09,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:50:09,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:50:09,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:50:09,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:50:09,417 INFO L87 Difference]: Start difference. First operand 7137 states and 10087 transitions. Second operand 4 states. [2020-12-22 13:50:11,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:50:11,009 INFO L93 Difference]: Finished difference Result 14436 states and 20404 transitions. [2020-12-22 13:50:11,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:50:11,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 198 [2020-12-22 13:50:11,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:50:11,033 INFO L225 Difference]: With dead ends: 14436 [2020-12-22 13:50:11,033 INFO L226 Difference]: Without dead ends: 7347 [2020-12-22 13:50:11,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:50:11,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7347 states. [2020-12-22 13:50:11,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7347 to 7167. [2020-12-22 13:50:11,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7167 states. [2020-12-22 13:50:11,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7167 states to 7167 states and 10117 transitions. [2020-12-22 13:50:11,781 INFO L78 Accepts]: Start accepts. Automaton has 7167 states and 10117 transitions. Word has length 198 [2020-12-22 13:50:11,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:50:11,782 INFO L481 AbstractCegarLoop]: Abstraction has 7167 states and 10117 transitions. [2020-12-22 13:50:11,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:50:11,782 INFO L276 IsEmpty]: Start isEmpty. Operand 7167 states and 10117 transitions. [2020-12-22 13:50:11,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-12-22 13:50:11,790 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:50:11,791 INFO L422 BasicCegarLoop]: trace histogram [8, 6, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:50:12,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-22 13:50:12,006 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:50:12,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:50:12,007 INFO L82 PathProgramCache]: Analyzing trace with hash -716113708, now seen corresponding path program 1 times [2020-12-22 13:50:12,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:50:12,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801217978] [2020-12-22 13:50:12,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:12,322 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-12-22 13:50:12,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801217978] [2020-12-22 13:50:12,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:50:12,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:50:12,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196697116] [2020-12-22 13:50:12,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:50:12,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:50:12,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:50:12,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:50:12,324 INFO L87 Difference]: Start difference. First operand 7167 states and 10117 transitions. Second operand 3 states. [2020-12-22 13:50:13,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:50:13,871 INFO L93 Difference]: Finished difference Result 14482 states and 20414 transitions. [2020-12-22 13:50:13,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:50:13,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2020-12-22 13:50:13,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:50:13,889 INFO L225 Difference]: With dead ends: 14482 [2020-12-22 13:50:13,890 INFO L226 Difference]: Without dead ends: 7363 [2020-12-22 13:50:13,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:50:13,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7363 states. [2020-12-22 13:50:14,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7363 to 7167. [2020-12-22 13:50:14,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7167 states. [2020-12-22 13:50:14,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7167 states to 7167 states and 10051 transitions. [2020-12-22 13:50:14,486 INFO L78 Accepts]: Start accepts. Automaton has 7167 states and 10051 transitions. Word has length 201 [2020-12-22 13:50:14,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:50:14,486 INFO L481 AbstractCegarLoop]: Abstraction has 7167 states and 10051 transitions. [2020-12-22 13:50:14,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:50:14,486 INFO L276 IsEmpty]: Start isEmpty. Operand 7167 states and 10051 transitions. [2020-12-22 13:50:14,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-12-22 13:50:14,492 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:50:14,492 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:50:14,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 13:50:14,492 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:50:14,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:50:14,493 INFO L82 PathProgramCache]: Analyzing trace with hash -199172192, now seen corresponding path program 1 times [2020-12-22 13:50:14,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:50:14,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715962796] [2020-12-22 13:50:14,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:14,866 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-22 13:50:14,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715962796] [2020-12-22 13:50:14,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785273023] [2020-12-22 13:50:14,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:50:18,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:18,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 2278 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 13:50:18,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:50:19,253 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-12-22 13:50:19,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:50:19,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-12-22 13:50:19,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369795707] [2020-12-22 13:50:19,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:50:19,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:50:19,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:50:19,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:50:19,256 INFO L87 Difference]: Start difference. First operand 7167 states and 10051 transitions. Second operand 6 states. [2020-12-22 13:50:19,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:50:19,857 INFO L93 Difference]: Finished difference Result 14319 states and 20088 transitions. [2020-12-22 13:50:19,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:50:19,858 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 202 [2020-12-22 13:50:19,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:50:19,873 INFO L225 Difference]: With dead ends: 14319 [2020-12-22 13:50:19,874 INFO L226 Difference]: Without dead ends: 7169 [2020-12-22 13:50:19,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:50:19,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7169 states. [2020-12-22 13:50:20,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7169 to 7169. [2020-12-22 13:50:20,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7169 states. [2020-12-22 13:50:20,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7169 states to 7169 states and 10053 transitions. [2020-12-22 13:50:20,452 INFO L78 Accepts]: Start accepts. Automaton has 7169 states and 10053 transitions. Word has length 202 [2020-12-22 13:50:20,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:50:20,453 INFO L481 AbstractCegarLoop]: Abstraction has 7169 states and 10053 transitions. [2020-12-22 13:50:20,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:50:20,453 INFO L276 IsEmpty]: Start isEmpty. Operand 7169 states and 10053 transitions. [2020-12-22 13:50:20,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-12-22 13:50:20,461 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:50:20,462 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:50:20,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:50:20,666 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:50:20,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:50:20,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1302831230, now seen corresponding path program 2 times [2020-12-22 13:50:20,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:50:20,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96048274] [2020-12-22 13:50:20,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:21,040 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-12-22 13:50:21,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96048274] [2020-12-22 13:50:21,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178798399] [2020-12-22 13:50:21,041 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:50:28,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 13:50:28,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:50:28,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 2290 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 13:50:28,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:50:28,448 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-12-22 13:50:28,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:50:28,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-22 13:50:28,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34183618] [2020-12-22 13:50:28,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 13:50:28,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:50:28,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 13:50:28,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:50:28,450 INFO L87 Difference]: Start difference. First operand 7169 states and 10053 transitions. Second operand 8 states. [2020-12-22 13:50:29,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:50:29,100 INFO L93 Difference]: Finished difference Result 14322 states and 20091 transitions. [2020-12-22 13:50:29,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:50:29,100 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 204 [2020-12-22 13:50:29,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:50:29,114 INFO L225 Difference]: With dead ends: 14322 [2020-12-22 13:50:29,114 INFO L226 Difference]: Without dead ends: 7171 [2020-12-22 13:50:29,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:50:29,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7171 states. [2020-12-22 13:50:29,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7171 to 7171. [2020-12-22 13:50:29,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7171 states. [2020-12-22 13:50:29,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7171 states to 7171 states and 10055 transitions. [2020-12-22 13:50:29,603 INFO L78 Accepts]: Start accepts. Automaton has 7171 states and 10055 transitions. Word has length 204 [2020-12-22 13:50:29,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:50:29,603 INFO L481 AbstractCegarLoop]: Abstraction has 7171 states and 10055 transitions. [2020-12-22 13:50:29,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 13:50:29,603 INFO L276 IsEmpty]: Start isEmpty. Operand 7171 states and 10055 transitions. [2020-12-22 13:50:29,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-12-22 13:50:29,611 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:50:29,612 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:50:29,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-22 13:50:29,813 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:50:29,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:50:29,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1727796896, now seen corresponding path program 3 times [2020-12-22 13:50:29,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:50:29,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655596112] [2020-12-22 13:50:29,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:30,285 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-12-22 13:50:30,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655596112] [2020-12-22 13:50:30,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945532223] [2020-12-22 13:50:30,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:50:47,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 13:50:47,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:50:47,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 1329 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 13:50:47,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:50:47,744 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2020-12-22 13:50:47,747 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 13:50:47,751 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 13:50:47,754 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2020-12-22 13:50:47,759 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 13:50:47,760 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 13:50:47,761 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 13:50:47,762 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:19, output treesize:1 [2020-12-22 13:50:48,121 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-12-22 13:50:48,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:50:48,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-12-22 13:50:48,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871992368] [2020-12-22 13:50:48,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 13:50:48,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:50:48,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 13:50:48,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-22 13:50:48,124 INFO L87 Difference]: Start difference. First operand 7171 states and 10055 transitions. Second operand 10 states. [2020-12-22 13:50:48,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:50:48,870 INFO L93 Difference]: Finished difference Result 14325 states and 20094 transitions. [2020-12-22 13:50:48,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 13:50:48,871 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 206 [2020-12-22 13:50:48,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:50:48,882 INFO L225 Difference]: With dead ends: 14325 [2020-12-22 13:50:48,882 INFO L226 Difference]: Without dead ends: 7173 [2020-12-22 13:50:48,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-22 13:50:48,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7173 states. [2020-12-22 13:50:49,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7173 to 7173. [2020-12-22 13:50:49,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7173 states. [2020-12-22 13:50:49,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7173 states to 7173 states and 10057 transitions. [2020-12-22 13:50:49,367 INFO L78 Accepts]: Start accepts. Automaton has 7173 states and 10057 transitions. Word has length 206 [2020-12-22 13:50:49,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:50:49,367 INFO L481 AbstractCegarLoop]: Abstraction has 7173 states and 10057 transitions. [2020-12-22 13:50:49,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 13:50:49,367 INFO L276 IsEmpty]: Start isEmpty. Operand 7173 states and 10057 transitions. [2020-12-22 13:50:49,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-12-22 13:50:49,374 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:50:49,375 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:50:49,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:50:49,576 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:50:49,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:50:49,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1172287486, now seen corresponding path program 4 times [2020-12-22 13:50:49,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:50:49,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470122505] [2020-12-22 13:50:49,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:50,267 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-12-22 13:50:50,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470122505] [2020-12-22 13:50:50,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18104455] [2020-12-22 13:50:50,267 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:50:57,107 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 13:50:57,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:50:57,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 2314 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 13:50:57,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:50:57,670 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-12-22 13:50:57,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:50:57,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2020-12-22 13:50:57,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490530473] [2020-12-22 13:50:57,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 13:50:57,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:50:57,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 13:50:57,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:50:57,672 INFO L87 Difference]: Start difference. First operand 7173 states and 10057 transitions. Second operand 8 states. [2020-12-22 13:50:59,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:50:59,137 INFO L93 Difference]: Finished difference Result 14682 states and 20563 transitions. [2020-12-22 13:50:59,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:50:59,138 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 208 [2020-12-22 13:50:59,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:50:59,151 INFO L225 Difference]: With dead ends: 14682 [2020-12-22 13:50:59,151 INFO L226 Difference]: Without dead ends: 7563 [2020-12-22 13:50:59,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:50:59,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7563 states. [2020-12-22 13:50:59,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7563 to 7383. [2020-12-22 13:50:59,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7383 states. [2020-12-22 13:50:59,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7383 states to 7383 states and 10312 transitions. [2020-12-22 13:50:59,694 INFO L78 Accepts]: Start accepts. Automaton has 7383 states and 10312 transitions. Word has length 208 [2020-12-22 13:50:59,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:50:59,695 INFO L481 AbstractCegarLoop]: Abstraction has 7383 states and 10312 transitions. [2020-12-22 13:50:59,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 13:50:59,695 INFO L276 IsEmpty]: Start isEmpty. Operand 7383 states and 10312 transitions. [2020-12-22 13:50:59,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-12-22 13:50:59,703 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:50:59,704 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:50:59,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:50:59,919 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:50:59,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:50:59,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1203513723, now seen corresponding path program 5 times [2020-12-22 13:50:59,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:50:59,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184507352] [2020-12-22 13:50:59,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:51:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:51:00,583 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 42 proven. 6 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-12-22 13:51:00,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184507352] [2020-12-22 13:51:00,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703204125] [2020-12-22 13:51:00,584 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true