/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-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:48:16,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:48:16,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:48:16,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:48:16,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:48:16,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:48:16,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:48:16,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:48:16,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:48:16,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:48:16,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:48:16,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:48:16,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:48:16,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:48:16,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:48:16,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:48:16,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:48:16,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:48:16,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:48:16,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:48:16,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:48:16,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:48:16,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:48:16,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:48:16,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:48:16,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:48:16,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:48:16,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:48:16,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:48:16,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:48:16,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:48:16,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:48:16,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:48:16,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:48:16,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:48:16,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:48:16,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:48:16,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:48:16,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:48:16,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:48:16,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:48:16,210 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:48:16,235 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:48:16,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:48:16,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:48:16,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:48:16,238 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:48:16,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:48:16,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:48:16,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:48:16,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:48:16,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:48:16,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:48:16,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:48:16,239 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:48:16,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:48:16,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:48:16,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:48:16,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:48:16,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:48:16,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:48:16,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:48:16,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:48:16,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:48:16,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:48:16,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:48:16,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:48:16,242 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:48:16,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:48:16,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:48:16,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:48:16,710 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:48:16,710 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:48:16,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-12-22 13:48:16,802 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27b7c29c0/12da5afcd60f4473a894d5a0f4994d1d/FLAG212ca6913 [2020-12-22 13:48:17,775 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:48:17,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-12-22 13:48:17,815 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27b7c29c0/12da5afcd60f4473a894d5a0f4994d1d/FLAG212ca6913 [2020-12-22 13:48:18,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27b7c29c0/12da5afcd60f4473a894d5a0f4994d1d [2020-12-22 13:48:18,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:48:18,289 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:48:18,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:48:18,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:48:18,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:48:18,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:48:18" (1/1) ... [2020-12-22 13:48:18,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26dcbc8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:48:18, skipping insertion in model container [2020-12-22 13:48:18,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:48:18" (1/1) ... [2020-12-22 13:48:18,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:48:18,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:48:19,572 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-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i[144238,144251] [2020-12-22 13:48:19,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:48:19,657 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:48:20,016 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-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i[144238,144251] [2020-12-22 13:48:20,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:48:20,175 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:48:20,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:48:20 WrapperNode [2020-12-22 13:48:20,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:48:20,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:48:20,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:48:20,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:48:20,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:48:20" (1/1) ... [2020-12-22 13:48:20,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:48:20" (1/1) ... [2020-12-22 13:48:20,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:48:20,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:48:20,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:48:20,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:48:20,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:48:20" (1/1) ... [2020-12-22 13:48:20,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:48:20" (1/1) ... [2020-12-22 13:48:20,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:48:20" (1/1) ... [2020-12-22 13:48:20,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:48:20" (1/1) ... [2020-12-22 13:48:20,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:48:20" (1/1) ... [2020-12-22 13:48:20,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:48:20" (1/1) ... [2020-12-22 13:48:20,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:48:20" (1/1) ... [2020-12-22 13:48:20,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:48:20,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:48:20,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:48:20,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:48:20,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:48:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:48:20,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:48:20,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:48:20,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:48:20,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:48:20,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:48:20,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:48:20,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:48:20,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:48:20,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:48:20,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:48:20,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:48:20,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:48:20,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:48:20,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:48:20,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:48:38,853 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:48:38,853 INFO L299 CfgBuilder]: Removed 759 assume(true) statements. [2020-12-22 13:48:38,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:48:38 BoogieIcfgContainer [2020-12-22 13:48:38,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:48:38,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:48:38,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:48:38,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:48:38,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:48:18" (1/3) ... [2020-12-22 13:48:38,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed3d0a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:48:38, skipping insertion in model container [2020-12-22 13:48:38,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:48:20" (2/3) ... [2020-12-22 13:48:38,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed3d0a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:48:38, skipping insertion in model container [2020-12-22 13:48:38,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:48:38" (3/3) ... [2020-12-22 13:48:38,876 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-12-22 13:48:38,890 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:48:38,896 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-22 13:48:38,917 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-22 13:48:38,952 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:48:38,952 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:48:38,952 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:48:38,952 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:48:38,952 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:48:38,953 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:48:38,953 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:48:38,953 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:48:38,988 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states. [2020-12-22 13:48:39,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 13:48:39,002 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:48:39,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:48:39,004 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:48:39,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:48:39,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1003833369, now seen corresponding path program 1 times [2020-12-22 13:48:39,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:48:39,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252124037] [2020-12-22 13:48:39,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:48:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:48:39,698 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 13:48:39,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252124037] [2020-12-22 13:48:39,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:48:39,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:48:39,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875513843] [2020-12-22 13:48:39,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 13:48:39,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:48:39,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 13:48:39,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 13:48:39,733 INFO L87 Difference]: Start difference. First operand 880 states. Second operand 2 states. [2020-12-22 13:48:39,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:48:39,891 INFO L93 Difference]: Finished difference Result 1756 states and 2545 transitions. [2020-12-22 13:48:39,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 13:48:39,893 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 54 [2020-12-22 13:48:39,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:48:39,919 INFO L225 Difference]: With dead ends: 1756 [2020-12-22 13:48:39,919 INFO L226 Difference]: Without dead ends: 868 [2020-12-22 13:48:39,928 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 13:48:39,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2020-12-22 13:48:40,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 868. [2020-12-22 13:48:40,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 868 states. [2020-12-22 13:48:40,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1199 transitions. [2020-12-22 13:48:40,091 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1199 transitions. Word has length 54 [2020-12-22 13:48:40,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:48:40,091 INFO L481 AbstractCegarLoop]: Abstraction has 868 states and 1199 transitions. [2020-12-22 13:48:40,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 13:48:40,091 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1199 transitions. [2020-12-22 13:48:40,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 13:48:40,098 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:48:40,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:48:40,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:48:40,104 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:48:40,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:48:40,105 INFO L82 PathProgramCache]: Analyzing trace with hash 527454111, now seen corresponding path program 1 times [2020-12-22 13:48:40,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:48:40,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852388636] [2020-12-22 13:48:40,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:48:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:48:40,469 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 13:48:40,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852388636] [2020-12-22 13:48:40,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:48:40,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:48:40,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342514292] [2020-12-22 13:48:40,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:48:40,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:48:40,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:48:40,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:48:40,474 INFO L87 Difference]: Start difference. First operand 868 states and 1199 transitions. Second operand 3 states. [2020-12-22 13:48:40,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:48:40,875 INFO L93 Difference]: Finished difference Result 1735 states and 2407 transitions. [2020-12-22 13:48:40,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:48:40,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-22 13:48:40,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:48:40,883 INFO L225 Difference]: With dead ends: 1735 [2020-12-22 13:48:40,883 INFO L226 Difference]: Without dead ends: 908 [2020-12-22 13:48:40,886 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 13:48:40,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2020-12-22 13:48:40,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 908. [2020-12-22 13:48:40,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 908 states. [2020-12-22 13:48:40,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1255 transitions. [2020-12-22 13:48:40,923 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1255 transitions. Word has length 54 [2020-12-22 13:48:40,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:48:40,924 INFO L481 AbstractCegarLoop]: Abstraction has 908 states and 1255 transitions. [2020-12-22 13:48:40,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:48:40,925 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1255 transitions. [2020-12-22 13:48:40,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 13:48:40,930 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:48:40,930 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:48:40,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:48:40,931 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:48:40,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:48:40,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1351840109, now seen corresponding path program 1 times [2020-12-22 13:48:40,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:48:40,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718687592] [2020-12-22 13:48:40,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:48:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:48:41,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:48:41,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718687592] [2020-12-22 13:48:41,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:48:41,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:48:41,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904545691] [2020-12-22 13:48:41,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:48:41,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:48:41,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:48:41,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:48:41,401 INFO L87 Difference]: Start difference. First operand 908 states and 1255 transitions. Second operand 3 states. [2020-12-22 13:48:44,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:48:44,070 INFO L93 Difference]: Finished difference Result 1864 states and 2615 transitions. [2020-12-22 13:48:44,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:48:44,076 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 13:48:44,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:48:44,085 INFO L225 Difference]: With dead ends: 1864 [2020-12-22 13:48:44,085 INFO L226 Difference]: Without dead ends: 997 [2020-12-22 13:48:44,088 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 13:48:44,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-12-22 13:48:44,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2020-12-22 13:48:44,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-12-22 13:48:44,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1374 transitions. [2020-12-22 13:48:44,126 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1374 transitions. Word has length 81 [2020-12-22 13:48:44,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:48:44,128 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1374 transitions. [2020-12-22 13:48:44,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:48:44,128 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1374 transitions. [2020-12-22 13:48:44,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 13:48:44,131 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:48:44,131 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:48:44,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:48:44,132 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:48:44,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:48:44,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1079749019, now seen corresponding path program 1 times [2020-12-22 13:48:44,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:48:44,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598355975] [2020-12-22 13:48:44,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:48:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:48:44,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:48:44,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598355975] [2020-12-22 13:48:44,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:48:44,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:48:44,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049037501] [2020-12-22 13:48:44,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:48:44,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:48:44,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:48:44,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:48:44,449 INFO L87 Difference]: Start difference. First operand 997 states and 1374 transitions. Second operand 3 states. [2020-12-22 13:48:52,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:48:52,630 INFO L93 Difference]: Finished difference Result 1957 states and 2708 transitions. [2020-12-22 13:48:52,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:48:52,631 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-12-22 13:48:52,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:48:52,639 INFO L225 Difference]: With dead ends: 1957 [2020-12-22 13:48:52,639 INFO L226 Difference]: Without dead ends: 1001 [2020-12-22 13:48:52,642 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 13:48:52,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2020-12-22 13:48:52,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 1001. [2020-12-22 13:48:52,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2020-12-22 13:48:52,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1378 transitions. [2020-12-22 13:48:52,680 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1378 transitions. Word has length 85 [2020-12-22 13:48:52,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:48:52,683 INFO L481 AbstractCegarLoop]: Abstraction has 1001 states and 1378 transitions. [2020-12-22 13:48:52,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:48:52,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1378 transitions. [2020-12-22 13:48:52,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 13:48:52,684 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:48:52,685 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:48:52,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:48:52,685 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:48:52,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:48:52,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1079808601, now seen corresponding path program 1 times [2020-12-22 13:48:52,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:48:52,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032658494] [2020-12-22 13:48:52,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:48:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:48:53,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:48:53,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032658494] [2020-12-22 13:48:53,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:48:53,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:48:53,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536246761] [2020-12-22 13:48:53,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:48:53,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:48:53,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:48:53,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:48:53,099 INFO L87 Difference]: Start difference. First operand 1001 states and 1378 transitions. Second operand 3 states. [2020-12-22 13:48:55,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:48:55,443 INFO L93 Difference]: Finished difference Result 1938 states and 2683 transitions. [2020-12-22 13:48:55,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:48:55,444 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-12-22 13:48:55,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:48:55,456 INFO L225 Difference]: With dead ends: 1938 [2020-12-22 13:48:55,456 INFO L226 Difference]: Without dead ends: 1922 [2020-12-22 13:48:55,457 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 13:48:55,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2020-12-22 13:48:55,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1917. [2020-12-22 13:48:55,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1917 states. [2020-12-22 13:48:55,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 2661 transitions. [2020-12-22 13:48:55,556 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 2661 transitions. Word has length 85 [2020-12-22 13:48:55,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:48:55,558 INFO L481 AbstractCegarLoop]: Abstraction has 1917 states and 2661 transitions. [2020-12-22 13:48:55,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:48:55,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 2661 transitions. [2020-12-22 13:48:55,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 13:48:55,565 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:48:55,565 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:48:55,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:48:55,566 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:48:55,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:48:55,566 INFO L82 PathProgramCache]: Analyzing trace with hash 55898786, now seen corresponding path program 1 times [2020-12-22 13:48:55,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:48:55,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356379498] [2020-12-22 13:48:55,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:48:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:48:55,850 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:48:55,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356379498] [2020-12-22 13:48:55,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:48:55,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:48:55,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417878399] [2020-12-22 13:48:55,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:48:55,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:48:55,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:48:55,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:48:55,853 INFO L87 Difference]: Start difference. First operand 1917 states and 2661 transitions. Second operand 3 states. [2020-12-22 13:48:58,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:48:58,587 INFO L93 Difference]: Finished difference Result 3971 states and 5580 transitions. [2020-12-22 13:48:58,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:48:58,588 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-12-22 13:48:58,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:48:58,601 INFO L225 Difference]: With dead ends: 3971 [2020-12-22 13:48:58,601 INFO L226 Difference]: Without dead ends: 2095 [2020-12-22 13:48:58,605 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 13:48:58,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states. [2020-12-22 13:48:58,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 2095. [2020-12-22 13:48:58,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2095 states. [2020-12-22 13:48:58,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2095 states to 2095 states and 2899 transitions. [2020-12-22 13:48:58,690 INFO L78 Accepts]: Start accepts. Automaton has 2095 states and 2899 transitions. Word has length 100 [2020-12-22 13:48:58,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:48:58,690 INFO L481 AbstractCegarLoop]: Abstraction has 2095 states and 2899 transitions. [2020-12-22 13:48:58,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:48:58,690 INFO L276 IsEmpty]: Start isEmpty. Operand 2095 states and 2899 transitions. [2020-12-22 13:48:58,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 13:48:58,693 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:48:58,693 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2020-12-22 13:48:58,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 13:48:58,694 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:48:58,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:48:58,694 INFO L82 PathProgramCache]: Analyzing trace with hash 164948024, now seen corresponding path program 1 times [2020-12-22 13:48:58,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:48:58,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201708562] [2020-12-22 13:48:58,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:48:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:48:58,938 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 13:48:58,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201708562] [2020-12-22 13:48:58,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:48:58,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:48:58,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841706585] [2020-12-22 13:48:58,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:48:58,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:48:58,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:48:58,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:48:58,941 INFO L87 Difference]: Start difference. First operand 2095 states and 2899 transitions. Second operand 4 states. [2020-12-22 13:49:01,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:01,194 INFO L93 Difference]: Finished difference Result 5147 states and 7088 transitions. [2020-12-22 13:49:01,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:49:01,196 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-12-22 13:49:01,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:01,213 INFO L225 Difference]: With dead ends: 5147 [2020-12-22 13:49:01,214 INFO L226 Difference]: Without dead ends: 3093 [2020-12-22 13:49:01,220 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 13:49:01,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3093 states. [2020-12-22 13:49:01,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3093 to 2099. [2020-12-22 13:49:01,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2099 states. [2020-12-22 13:49:01,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 2903 transitions. [2020-12-22 13:49:01,341 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 2903 transitions. Word has length 113 [2020-12-22 13:49:01,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:01,342 INFO L481 AbstractCegarLoop]: Abstraction has 2099 states and 2903 transitions. [2020-12-22 13:49:01,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:49:01,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 2903 transitions. [2020-12-22 13:49:01,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-22 13:49:01,345 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:01,345 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2020-12-22 13:49:01,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 13:49:01,346 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:01,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:01,346 INFO L82 PathProgramCache]: Analyzing trace with hash 86394116, now seen corresponding path program 1 times [2020-12-22 13:49:01,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:01,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436255579] [2020-12-22 13:49:01,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:01,613 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 13:49:01,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436255579] [2020-12-22 13:49:01,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:01,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:01,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345909150] [2020-12-22 13:49:01,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:01,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:01,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:01,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:01,615 INFO L87 Difference]: Start difference. First operand 2099 states and 2903 transitions. Second operand 3 states. [2020-12-22 13:49:04,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:04,360 INFO L93 Difference]: Finished difference Result 4335 states and 6064 transitions. [2020-12-22 13:49:04,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:04,361 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2020-12-22 13:49:04,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:04,374 INFO L225 Difference]: With dead ends: 4335 [2020-12-22 13:49:04,374 INFO L226 Difference]: Without dead ends: 2277 [2020-12-22 13:49:04,379 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 13:49:04,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2020-12-22 13:49:04,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 2277. [2020-12-22 13:49:04,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2277 states. [2020-12-22 13:49:04,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 3141 transitions. [2020-12-22 13:49:04,477 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 3141 transitions. Word has length 118 [2020-12-22 13:49:04,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:04,478 INFO L481 AbstractCegarLoop]: Abstraction has 2277 states and 3141 transitions. [2020-12-22 13:49:04,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:04,478 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 3141 transitions. [2020-12-22 13:49:04,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-22 13:49:04,482 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:04,482 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 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] [2020-12-22 13:49:04,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 13:49:04,483 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:04,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:04,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1771424647, now seen corresponding path program 1 times [2020-12-22 13:49:04,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:04,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119978999] [2020-12-22 13:49:04,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:04,787 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-22 13:49:04,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119978999] [2020-12-22 13:49:04,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:04,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:49:04,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592647364] [2020-12-22 13:49:04,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:04,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:04,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:04,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:04,790 INFO L87 Difference]: Start difference. First operand 2277 states and 3141 transitions. Second operand 3 states. [2020-12-22 13:49:05,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:05,036 INFO L93 Difference]: Finished difference Result 4513 states and 6234 transitions. [2020-12-22 13:49:05,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:05,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-12-22 13:49:05,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:05,052 INFO L225 Difference]: With dead ends: 4513 [2020-12-22 13:49:05,053 INFO L226 Difference]: Without dead ends: 2277 [2020-12-22 13:49:05,057 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 13:49:05,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2020-12-22 13:49:05,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 2277. [2020-12-22 13:49:05,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2277 states. [2020-12-22 13:49:05,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 3044 transitions. [2020-12-22 13:49:05,152 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 3044 transitions. Word has length 142 [2020-12-22 13:49:05,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:05,153 INFO L481 AbstractCegarLoop]: Abstraction has 2277 states and 3044 transitions. [2020-12-22 13:49:05,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:05,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 3044 transitions. [2020-12-22 13:49:05,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-22 13:49:05,156 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:05,157 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 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] [2020-12-22 13:49:05,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 13:49:05,157 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:05,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:05,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1821942775, now seen corresponding path program 1 times [2020-12-22 13:49:05,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:05,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856795467] [2020-12-22 13:49:05,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:05,515 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-22 13:49:05,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856795467] [2020-12-22 13:49:05,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:05,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:49:05,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387511370] [2020-12-22 13:49:05,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:49:05,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:05,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:49:05,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:49:05,527 INFO L87 Difference]: Start difference. First operand 2277 states and 3044 transitions. Second operand 4 states. [2020-12-22 13:49:07,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:07,857 INFO L93 Difference]: Finished difference Result 6081 states and 8078 transitions. [2020-12-22 13:49:07,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:49:07,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-12-22 13:49:07,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:07,876 INFO L225 Difference]: With dead ends: 6081 [2020-12-22 13:49:07,877 INFO L226 Difference]: Without dead ends: 3845 [2020-12-22 13:49:07,881 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 13:49:07,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3845 states. [2020-12-22 13:49:07,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3845 to 2281. [2020-12-22 13:49:07,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-12-22 13:49:07,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 3048 transitions. [2020-12-22 13:49:07,997 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 3048 transitions. Word has length 142 [2020-12-22 13:49:07,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:07,997 INFO L481 AbstractCegarLoop]: Abstraction has 2281 states and 3048 transitions. [2020-12-22 13:49:07,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:49:07,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 3048 transitions. [2020-12-22 13:49:08,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-12-22 13:49:08,001 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:08,001 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 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 13:49:08,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 13:49:08,002 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:08,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:08,003 INFO L82 PathProgramCache]: Analyzing trace with hash -832104116, now seen corresponding path program 1 times [2020-12-22 13:49:08,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:08,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6393538] [2020-12-22 13:49:08,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:08,293 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-22 13:49:08,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6393538] [2020-12-22 13:49:08,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:08,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:08,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131487811] [2020-12-22 13:49:08,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:08,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:08,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:08,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:08,297 INFO L87 Difference]: Start difference. First operand 2281 states and 3048 transitions. Second operand 3 states. [2020-12-22 13:49:08,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:08,398 INFO L93 Difference]: Finished difference Result 4523 states and 6052 transitions. [2020-12-22 13:49:08,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:08,399 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2020-12-22 13:49:08,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:08,412 INFO L225 Difference]: With dead ends: 4523 [2020-12-22 13:49:08,412 INFO L226 Difference]: Without dead ends: 2283 [2020-12-22 13:49:08,417 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 13:49:08,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2283 states. [2020-12-22 13:49:08,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2283 to 2283. [2020-12-22 13:49:08,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2283 states. [2020-12-22 13:49:08,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 3050 transitions. [2020-12-22 13:49:08,528 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 3050 transitions. Word has length 168 [2020-12-22 13:49:08,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:08,529 INFO L481 AbstractCegarLoop]: Abstraction has 2283 states and 3050 transitions. [2020-12-22 13:49:08,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:08,529 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 3050 transitions. [2020-12-22 13:49:08,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-12-22 13:49:08,532 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:08,533 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 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 13:49:08,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 13:49:08,533 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:08,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:08,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1341577206, now seen corresponding path program 1 times [2020-12-22 13:49:08,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:08,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604669879] [2020-12-22 13:49:08,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:08,839 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-22 13:49:08,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604669879] [2020-12-22 13:49:08,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:08,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:08,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074766300] [2020-12-22 13:49:08,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:08,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:08,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:08,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:08,842 INFO L87 Difference]: Start difference. First operand 2283 states and 3050 transitions. Second operand 3 states. [2020-12-22 13:49:08,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:08,940 INFO L93 Difference]: Finished difference Result 4527 states and 6056 transitions. [2020-12-22 13:49:08,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:08,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2020-12-22 13:49:08,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:08,952 INFO L225 Difference]: With dead ends: 4527 [2020-12-22 13:49:08,952 INFO L226 Difference]: Without dead ends: 2285 [2020-12-22 13:49:08,957 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 13:49:08,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2020-12-22 13:49:09,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 2285. [2020-12-22 13:49:09,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2285 states. [2020-12-22 13:49:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2285 states to 2285 states and 3052 transitions. [2020-12-22 13:49:09,117 INFO L78 Accepts]: Start accepts. Automaton has 2285 states and 3052 transitions. Word has length 168 [2020-12-22 13:49:09,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:09,118 INFO L481 AbstractCegarLoop]: Abstraction has 2285 states and 3052 transitions. [2020-12-22 13:49:09,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:09,118 INFO L276 IsEmpty]: Start isEmpty. Operand 2285 states and 3052 transitions. [2020-12-22 13:49:09,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-12-22 13:49:09,122 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:09,122 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 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 13:49:09,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 13:49:09,123 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:09,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:09,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1147951756, now seen corresponding path program 1 times [2020-12-22 13:49:09,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:09,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794283743] [2020-12-22 13:49:09,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:09,397 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-22 13:49:09,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794283743] [2020-12-22 13:49:09,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:09,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:49:09,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078662941] [2020-12-22 13:49:09,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:49:09,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:09,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:49:09,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:49:09,400 INFO L87 Difference]: Start difference. First operand 2285 states and 3052 transitions. Second operand 4 states. [2020-12-22 13:49:09,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:09,530 INFO L93 Difference]: Finished difference Result 4535 states and 6064 transitions. [2020-12-22 13:49:09,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:49:09,531 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2020-12-22 13:49:09,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:09,560 INFO L225 Difference]: With dead ends: 4535 [2020-12-22 13:49:09,563 INFO L226 Difference]: Without dead ends: 2291 [2020-12-22 13:49:09,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 13:49:09,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2020-12-22 13:49:09,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2289. [2020-12-22 13:49:09,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2289 states. [2020-12-22 13:49:09,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 3056 transitions. [2020-12-22 13:49:09,672 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 3056 transitions. Word has length 168 [2020-12-22 13:49:09,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:09,672 INFO L481 AbstractCegarLoop]: Abstraction has 2289 states and 3056 transitions. [2020-12-22 13:49:09,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:49:09,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 3056 transitions. [2020-12-22 13:49:09,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-12-22 13:49:09,676 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:09,676 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 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 13:49:09,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 13:49:09,677 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:09,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:09,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1288500366, now seen corresponding path program 1 times [2020-12-22 13:49:09,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:09,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708504091] [2020-12-22 13:49:09,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:10,078 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-12-22 13:49:10,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708504091] [2020-12-22 13:49:10,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:10,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:49:10,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545987139] [2020-12-22 13:49:10,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:49:10,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:10,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:49:10,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:49:10,081 INFO L87 Difference]: Start difference. First operand 2289 states and 3056 transitions. Second operand 4 states. [2020-12-22 13:49:10,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:10,948 INFO L93 Difference]: Finished difference Result 6595 states and 8814 transitions. [2020-12-22 13:49:10,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:49:10,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2020-12-22 13:49:10,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:10,958 INFO L225 Difference]: With dead ends: 6595 [2020-12-22 13:49:10,958 INFO L226 Difference]: Without dead ends: 4329 [2020-12-22 13:49:10,964 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 13:49:10,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4329 states. [2020-12-22 13:49:11,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4329 to 2289. [2020-12-22 13:49:11,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2289 states. [2020-12-22 13:49:11,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 3055 transitions. [2020-12-22 13:49:11,086 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 3055 transitions. Word has length 168 [2020-12-22 13:49:11,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:11,086 INFO L481 AbstractCegarLoop]: Abstraction has 2289 states and 3055 transitions. [2020-12-22 13:49:11,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:49:11,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 3055 transitions. [2020-12-22 13:49:11,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-12-22 13:49:11,090 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:11,091 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 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 13:49:11,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 13:49:11,091 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:11,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:11,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1615125302, now seen corresponding path program 1 times [2020-12-22 13:49:11,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:11,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463949631] [2020-12-22 13:49:11,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:11,512 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 13:49:11,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463949631] [2020-12-22 13:49:11,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:11,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 13:49:11,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248100730] [2020-12-22 13:49:11,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:49:11,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:11,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:49:11,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:49:11,516 INFO L87 Difference]: Start difference. First operand 2289 states and 3055 transitions. Second operand 6 states. [2020-12-22 13:49:13,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:13,805 INFO L93 Difference]: Finished difference Result 12520 states and 16714 transitions. [2020-12-22 13:49:13,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 13:49:13,806 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2020-12-22 13:49:13,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:13,828 INFO L225 Difference]: With dead ends: 12520 [2020-12-22 13:49:13,829 INFO L226 Difference]: Without dead ends: 10272 [2020-12-22 13:49:13,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-22 13:49:13,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10272 states. [2020-12-22 13:49:14,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10272 to 2297. [2020-12-22 13:49:14,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2297 states. [2020-12-22 13:49:14,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2297 states to 2297 states and 3063 transitions. [2020-12-22 13:49:14,026 INFO L78 Accepts]: Start accepts. Automaton has 2297 states and 3063 transitions. Word has length 170 [2020-12-22 13:49:14,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:14,026 INFO L481 AbstractCegarLoop]: Abstraction has 2297 states and 3063 transitions. [2020-12-22 13:49:14,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:49:14,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2297 states and 3063 transitions. [2020-12-22 13:49:14,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-12-22 13:49:14,030 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:14,031 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 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 13:49:14,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 13:49:14,031 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:14,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:14,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1672104782, now seen corresponding path program 1 times [2020-12-22 13:49:14,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:14,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751720678] [2020-12-22 13:49:14,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:14,482 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-22 13:49:14,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751720678] [2020-12-22 13:49:14,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:14,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 13:49:14,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698270357] [2020-12-22 13:49:14,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 13:49:14,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:14,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 13:49:14,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:49:14,485 INFO L87 Difference]: Start difference. First operand 2297 states and 3063 transitions. Second operand 7 states. [2020-12-22 13:49:18,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:18,971 INFO L93 Difference]: Finished difference Result 24132 states and 32254 transitions. [2020-12-22 13:49:18,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 13:49:18,972 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2020-12-22 13:49:18,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:19,020 INFO L225 Difference]: With dead ends: 24132 [2020-12-22 13:49:19,020 INFO L226 Difference]: Without dead ends: 21876 [2020-12-22 13:49:19,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2020-12-22 13:49:19,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21876 states. [2020-12-22 13:49:19,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21876 to 2307. [2020-12-22 13:49:19,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2307 states. [2020-12-22 13:49:19,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 3073 transitions. [2020-12-22 13:49:19,353 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 3073 transitions. Word has length 172 [2020-12-22 13:49:19,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:19,353 INFO L481 AbstractCegarLoop]: Abstraction has 2307 states and 3073 transitions. [2020-12-22 13:49:19,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 13:49:19,353 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 3073 transitions. [2020-12-22 13:49:19,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-12-22 13:49:19,357 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:19,358 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 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 13:49:19,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 13:49:19,358 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:19,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:19,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1158973614, now seen corresponding path program 1 times [2020-12-22 13:49:19,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:19,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851606932] [2020-12-22 13:49:19,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:20,035 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-12-22 13:49:20,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851606932] [2020-12-22 13:49:20,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:20,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:20,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797759888] [2020-12-22 13:49:20,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:20,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:20,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:20,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:20,038 INFO L87 Difference]: Start difference. First operand 2307 states and 3073 transitions. Second operand 3 states. [2020-12-22 13:49:20,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:20,267 INFO L93 Difference]: Finished difference Result 4592 states and 6127 transitions. [2020-12-22 13:49:20,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:20,268 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2020-12-22 13:49:20,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:20,273 INFO L225 Difference]: With dead ends: 4592 [2020-12-22 13:49:20,274 INFO L226 Difference]: Without dead ends: 2312 [2020-12-22 13:49:20,278 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 13:49:20,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2020-12-22 13:49:20,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 2312. [2020-12-22 13:49:20,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2312 states. [2020-12-22 13:49:20,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 3078 transitions. [2020-12-22 13:49:20,461 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 3078 transitions. Word has length 174 [2020-12-22 13:49:20,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:20,462 INFO L481 AbstractCegarLoop]: Abstraction has 2312 states and 3078 transitions. [2020-12-22 13:49:20,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:20,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 3078 transitions. [2020-12-22 13:49:20,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-12-22 13:49:20,466 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:20,466 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 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, 1, 1, 1] [2020-12-22 13:49:20,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 13:49:20,467 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:20,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:20,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1800746837, now seen corresponding path program 1 times [2020-12-22 13:49:20,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:20,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263810212] [2020-12-22 13:49:20,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:21,097 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-22 13:49:21,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263810212] [2020-12-22 13:49:21,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397127766] [2020-12-22 13:49:21,098 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 13:49:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:22,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 2718 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 13:49:22,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:49:22,778 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-12-22 13:49:22,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:49:22,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2020-12-22 13:49:22,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111366532] [2020-12-22 13:49:22,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:49:22,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:22,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:49:22,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:49:22,784 INFO L87 Difference]: Start difference. First operand 2312 states and 3078 transitions. Second operand 5 states. [2020-12-22 13:49:25,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:25,576 INFO L93 Difference]: Finished difference Result 6822 states and 9096 transitions. [2020-12-22 13:49:25,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 13:49:25,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-12-22 13:49:25,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:25,586 INFO L225 Difference]: With dead ends: 6822 [2020-12-22 13:49:25,586 INFO L226 Difference]: Without dead ends: 4486 [2020-12-22 13:49:25,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-22 13:49:25,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4486 states. [2020-12-22 13:49:25,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4486 to 2292. [2020-12-22 13:49:25,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2292 states. [2020-12-22 13:49:25,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3038 transitions. [2020-12-22 13:49:25,920 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3038 transitions. Word has length 179 [2020-12-22 13:49:25,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:25,920 INFO L481 AbstractCegarLoop]: Abstraction has 2292 states and 3038 transitions. [2020-12-22 13:49:25,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:49:25,920 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3038 transitions. [2020-12-22 13:49:25,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-12-22 13:49:25,926 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:25,926 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:26,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 13:49:26,140 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:26,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:26,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1025148602, now seen corresponding path program 1 times [2020-12-22 13:49:26,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:26,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422035171] [2020-12-22 13:49:26,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:26,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:26,690 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-22 13:49:26,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422035171] [2020-12-22 13:49:26,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865674249] [2020-12-22 13:49:26,695 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 13:50:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:05,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 2849 conjuncts, 41 conjunts are in the unsatisfiable core [2020-12-22 13:50:05,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:50:05,346 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-12-22 13:50:05,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:50:05,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2020-12-22 13:50:05,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625327715] [2020-12-22 13:50:05,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:50:05,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:50:05,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:50:05,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:50:05,349 INFO L87 Difference]: Start difference. First operand 2292 states and 3038 transitions. Second operand 4 states. [2020-12-22 13:50:06,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:50:06,864 INFO L93 Difference]: Finished difference Result 6496 states and 8624 transitions. [2020-12-22 13:50:06,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:50:06,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 187 [2020-12-22 13:50:06,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:50:06,874 INFO L225 Difference]: With dead ends: 6496 [2020-12-22 13:50:06,875 INFO L226 Difference]: Without dead ends: 4213 [2020-12-22 13:50:06,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:50:06,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4213 states. [2020-12-22 13:50:07,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4213 to 2292. [2020-12-22 13:50:07,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2292 states. [2020-12-22 13:50:07,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3037 transitions. [2020-12-22 13:50:07,125 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3037 transitions. Word has length 187 [2020-12-22 13:50:07,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:50:07,125 INFO L481 AbstractCegarLoop]: Abstraction has 2292 states and 3037 transitions. [2020-12-22 13:50:07,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:50:07,125 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3037 transitions. [2020-12-22 13:50:07,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-12-22 13:50:07,130 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:50:07,130 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:50:07,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:50:07,344 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:50:07,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:50:07,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1808505442, now seen corresponding path program 1 times [2020-12-22 13:50:07,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:50:07,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253018093] [2020-12-22 13:50:07,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-22 13:50:08,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253018093] [2020-12-22 13:50:08,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421297674] [2020-12-22 13:50:08,012 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 13:50:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:51,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 2871 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 13:50:51,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:50:51,490 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-12-22 13:50:51,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:50:51,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2020-12-22 13:50:51,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071034390] [2020-12-22 13:50:51,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 13:50:51,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:50:51,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 13:50:51,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:50:51,493 INFO L87 Difference]: Start difference. First operand 2292 states and 3037 transitions. Second operand 7 states. [2020-12-22 13:50:52,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:50:52,101 INFO L93 Difference]: Finished difference Result 4561 states and 6055 transitions. [2020-12-22 13:50:52,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 13:50:52,102 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2020-12-22 13:50:52,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:50:52,108 INFO L225 Difference]: With dead ends: 4561 [2020-12-22 13:50:52,109 INFO L226 Difference]: Without dead ends: 2297 [2020-12-22 13:50:52,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-22 13:50:52,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2020-12-22 13:50:52,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 2297. [2020-12-22 13:50:52,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2297 states. [2020-12-22 13:50:52,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2297 states to 2297 states and 3042 transitions. [2020-12-22 13:50:52,358 INFO L78 Accepts]: Start accepts. Automaton has 2297 states and 3042 transitions. Word has length 189 [2020-12-22 13:50:52,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:50:52,359 INFO L481 AbstractCegarLoop]: Abstraction has 2297 states and 3042 transitions. [2020-12-22 13:50:52,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 13:50:52,359 INFO L276 IsEmpty]: Start isEmpty. Operand 2297 states and 3042 transitions. [2020-12-22 13:50:52,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-12-22 13:50:52,363 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:50:52,364 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:50:52,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:50:52,564 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:50:52,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:50:52,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1328081565, now seen corresponding path program 2 times [2020-12-22 13:50:52,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:50:52,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826914418] [2020-12-22 13:50:52,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:53,141 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-12-22 13:50:53,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826914418] [2020-12-22 13:50:53,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776654494] [2020-12-22 13:50:53,142 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 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 13:51:55,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 13:51:55,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:51:55,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 2901 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 13:51:55,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:51:56,155 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-12-22 13:51:56,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:51:56,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-22 13:51:56,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442052695] [2020-12-22 13:51:56,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 13:51:56,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:51:56,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 13:51:56,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:51:56,158 INFO L87 Difference]: Start difference. First operand 2297 states and 3042 transitions. Second operand 8 states. [2020-12-22 13:51:56,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:51:56,599 INFO L93 Difference]: Finished difference Result 4570 states and 6064 transitions. [2020-12-22 13:51:56,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 13:51:56,600 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 194 [2020-12-22 13:51:56,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:51:56,606 INFO L225 Difference]: With dead ends: 4570 [2020-12-22 13:51:56,606 INFO L226 Difference]: Without dead ends: 2302 [2020-12-22 13:51:56,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-22 13:51:56,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2020-12-22 13:51:56,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 2302. [2020-12-22 13:51:56,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2302 states. [2020-12-22 13:51:56,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 3047 transitions. [2020-12-22 13:51:56,833 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 3047 transitions. Word has length 194 [2020-12-22 13:51:56,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:51:56,834 INFO L481 AbstractCegarLoop]: Abstraction has 2302 states and 3047 transitions. [2020-12-22 13:51:56,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 13:51:56,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 3047 transitions. [2020-12-22 13:51:56,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-12-22 13:51:56,838 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:51:56,838 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:51:57,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:51:57,053 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:51:57,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:51:57,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1977564414, now seen corresponding path program 3 times [2020-12-22 13:51:57,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:51:57,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366358731] [2020-12-22 13:51:57,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:51:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:51:57,673 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-12-22 13:51:57,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366358731] [2020-12-22 13:51:57,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980977501] [2020-12-22 13:51:57,674 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 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