/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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:16:16,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:16:16,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:16:16,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:16:16,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:16:16,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:16:16,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:16:16,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:16:16,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:16:16,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:16:16,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:16:16,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:16:16,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:16:16,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:16:16,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:16:16,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:16:16,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:16:16,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:16:16,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:16:16,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:16:16,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:16:16,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:16:16,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:16:16,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:16:16,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:16:16,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:16:16,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:16:16,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:16:16,293 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:16:16,346 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:16:16,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:16:16,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:16:16,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:16:16,351 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:16:16,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:16:16,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:16:16,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:16:16,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:16:16,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:16:16,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:16:16,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:16:16,354 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:16:16,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:16:16,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:16:16,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:16:16,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:16:16,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:16:16,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:16:16,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:16:16,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:16:16,356 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:16:16,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:16:16,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:16:16,357 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:16:16,357 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:16:16,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:16:16,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:16:16,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:16:16,824 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:16:16,825 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:16:16,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-12-22 08:16:16,921 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/192ab5a21/33fbdbaee7324e309c9b485cb737efac/FLAG1c5718645 [2020-12-22 08:16:17,838 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:16:17,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-12-22 08:16:17,875 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/192ab5a21/33fbdbaee7324e309c9b485cb737efac/FLAG1c5718645 [2020-12-22 08:16:17,937 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/192ab5a21/33fbdbaee7324e309c9b485cb737efac [2020-12-22 08:16:17,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:16:17,942 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:16:17,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:16:17,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:16:17,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:16:17,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:16:17" (1/1) ... [2020-12-22 08:16:17,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3faa9935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:16:17, skipping insertion in model container [2020-12-22 08:16:17,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:16:17" (1/1) ... [2020-12-22 08:16:17,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:16:18,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:16:18,516 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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[6782,6795] [2020-12-22 08:16:18,574 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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[10923,10936] [2020-12-22 08:16:18,622 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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[17973,17986] [2020-12-22 08:16:18,651 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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[24445,24458] [2020-12-22 08:16:18,730 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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[43520,43533] [2020-12-22 08:16:18,911 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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71442,71455] [2020-12-22 08:16:19,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:16:19,166 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:16:19,217 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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[6782,6795] [2020-12-22 08:16:19,237 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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[10923,10936] [2020-12-22 08:16:19,253 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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[17973,17986] [2020-12-22 08:16:19,267 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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[24445,24458] [2020-12-22 08:16:19,311 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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[43520,43533] [2020-12-22 08:16:19,430 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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71442,71455] [2020-12-22 08:16:19,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:16:19,620 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:16:19,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:16:19 WrapperNode [2020-12-22 08:16:19,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:16:19,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:16:19,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:16:19,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:16:19,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:16:19" (1/1) ... [2020-12-22 08:16:19,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:16:19" (1/1) ... [2020-12-22 08:16:19,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:16:19,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:16:19,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:16:19,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:16:19,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:16:19" (1/1) ... [2020-12-22 08:16:19,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:16:19" (1/1) ... [2020-12-22 08:16:19,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:16:19" (1/1) ... [2020-12-22 08:16:19,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:16:19" (1/1) ... [2020-12-22 08:16:20,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:16:19" (1/1) ... [2020-12-22 08:16:20,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:16:19" (1/1) ... [2020-12-22 08:16:20,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:16:19" (1/1) ... [2020-12-22 08:16:20,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:16:20,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:16:20,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:16:20,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:16:20,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:16:19" (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 08:16:20,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:16:20,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:16:20,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:16:20,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:16:23,898 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:16:23,899 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:16:23,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:16:23 BoogieIcfgContainer [2020-12-22 08:16:23,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:16:23,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:16:23,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:16:23,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:16:23,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:16:17" (1/3) ... [2020-12-22 08:16:23,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b95e7b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:16:23, skipping insertion in model container [2020-12-22 08:16:23,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:16:19" (2/3) ... [2020-12-22 08:16:23,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b95e7b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:16:23, skipping insertion in model container [2020-12-22 08:16:23,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:16:23" (3/3) ... [2020-12-22 08:16:23,918 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-12-22 08:16:23,925 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:16:23,933 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 08:16:23,957 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 08:16:24,014 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:16:24,014 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:16:24,014 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:16:24,014 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:16:24,014 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:16:24,015 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:16:24,015 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:16:24,015 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:16:24,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states. [2020-12-22 08:16:24,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:16:24,095 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:24,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:16:24,096 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:24,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:24,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1061871762, now seen corresponding path program 1 times [2020-12-22 08:16:24,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:24,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805978370] [2020-12-22 08:16:24,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:24,604 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 08:16:24,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805978370] [2020-12-22 08:16:24,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:24,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:16:24,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40918670] [2020-12-22 08:16:24,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:16:24,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:24,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:16:24,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:16:24,631 INFO L87 Difference]: Start difference. First operand 1254 states. Second operand 5 states. [2020-12-22 08:16:26,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:26,910 INFO L93 Difference]: Finished difference Result 2475 states and 4331 transitions. [2020-12-22 08:16:26,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:16:26,912 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-12-22 08:16:26,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:26,947 INFO L225 Difference]: With dead ends: 2475 [2020-12-22 08:16:26,947 INFO L226 Difference]: Without dead ends: 1558 [2020-12-22 08:16:26,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:16:26,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2020-12-22 08:16:27,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1552. [2020-12-22 08:16:27,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1552 states. [2020-12-22 08:16:27,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2094 transitions. [2020-12-22 08:16:27,154 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2094 transitions. Word has length 51 [2020-12-22 08:16:27,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:27,154 INFO L481 AbstractCegarLoop]: Abstraction has 1552 states and 2094 transitions. [2020-12-22 08:16:27,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:16:27,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2094 transitions. [2020-12-22 08:16:27,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 08:16:27,159 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:27,160 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] [2020-12-22 08:16:27,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:16:27,160 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:27,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:27,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1625759521, now seen corresponding path program 1 times [2020-12-22 08:16:27,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:27,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613023833] [2020-12-22 08:16:27,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:27,462 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 08:16:27,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613023833] [2020-12-22 08:16:27,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:27,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:16:27,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727837942] [2020-12-22 08:16:27,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:16:27,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:27,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:16:27,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:16:27,469 INFO L87 Difference]: Start difference. First operand 1552 states and 2094 transitions. Second operand 6 states. [2020-12-22 08:16:29,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:29,112 INFO L93 Difference]: Finished difference Result 3563 states and 4888 transitions. [2020-12-22 08:16:29,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:16:29,112 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-12-22 08:16:29,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:29,129 INFO L225 Difference]: With dead ends: 3563 [2020-12-22 08:16:29,129 INFO L226 Difference]: Without dead ends: 2579 [2020-12-22 08:16:29,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:16:29,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2579 states. [2020-12-22 08:16:29,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2579 to 2559. [2020-12-22 08:16:29,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2559 states. [2020-12-22 08:16:29,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2559 states to 2559 states and 3526 transitions. [2020-12-22 08:16:29,266 INFO L78 Accepts]: Start accepts. Automaton has 2559 states and 3526 transitions. Word has length 52 [2020-12-22 08:16:29,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:29,267 INFO L481 AbstractCegarLoop]: Abstraction has 2559 states and 3526 transitions. [2020-12-22 08:16:29,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:16:29,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2559 states and 3526 transitions. [2020-12-22 08:16:29,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 08:16:29,272 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:29,272 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] [2020-12-22 08:16:29,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:16:29,273 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:29,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:29,273 INFO L82 PathProgramCache]: Analyzing trace with hash 299183278, now seen corresponding path program 1 times [2020-12-22 08:16:29,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:29,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662423980] [2020-12-22 08:16:29,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:29,392 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 08:16:29,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662423980] [2020-12-22 08:16:29,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:29,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:16:29,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95132937] [2020-12-22 08:16:29,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:16:29,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:29,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:16:29,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:16:29,395 INFO L87 Difference]: Start difference. First operand 2559 states and 3526 transitions. Second operand 6 states. [2020-12-22 08:16:30,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:30,925 INFO L93 Difference]: Finished difference Result 6051 states and 8449 transitions. [2020-12-22 08:16:30,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:16:30,925 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-12-22 08:16:30,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:30,951 INFO L225 Difference]: With dead ends: 6051 [2020-12-22 08:16:30,951 INFO L226 Difference]: Without dead ends: 4333 [2020-12-22 08:16:30,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:16:30,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4333 states. [2020-12-22 08:16:31,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4333 to 4317. [2020-12-22 08:16:31,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4317 states. [2020-12-22 08:16:31,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4317 states to 4317 states and 5973 transitions. [2020-12-22 08:16:31,238 INFO L78 Accepts]: Start accepts. Automaton has 4317 states and 5973 transitions. Word has length 52 [2020-12-22 08:16:31,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:31,239 INFO L481 AbstractCegarLoop]: Abstraction has 4317 states and 5973 transitions. [2020-12-22 08:16:31,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:16:31,239 INFO L276 IsEmpty]: Start isEmpty. Operand 4317 states and 5973 transitions. [2020-12-22 08:16:31,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:16:31,243 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:31,243 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] [2020-12-22 08:16:31,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:16:31,244 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:31,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:31,244 INFO L82 PathProgramCache]: Analyzing trace with hash 448762372, now seen corresponding path program 1 times [2020-12-22 08:16:31,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:31,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344287279] [2020-12-22 08:16:31,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:31,403 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 08:16:31,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344287279] [2020-12-22 08:16:31,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:31,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:16:31,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636781281] [2020-12-22 08:16:31,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:16:31,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:31,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:16:31,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:16:31,406 INFO L87 Difference]: Start difference. First operand 4317 states and 5973 transitions. Second operand 9 states. [2020-12-22 08:16:35,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:35,377 INFO L93 Difference]: Finished difference Result 12180 states and 17663 transitions. [2020-12-22 08:16:35,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:16:35,378 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-12-22 08:16:35,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:35,436 INFO L225 Difference]: With dead ends: 12180 [2020-12-22 08:16:35,436 INFO L226 Difference]: Without dead ends: 11062 [2020-12-22 08:16:35,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:16:35,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11062 states. [2020-12-22 08:16:35,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11062 to 4317. [2020-12-22 08:16:35,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4317 states. [2020-12-22 08:16:35,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4317 states to 4317 states and 5972 transitions. [2020-12-22 08:16:35,869 INFO L78 Accepts]: Start accepts. Automaton has 4317 states and 5972 transitions. Word has length 53 [2020-12-22 08:16:35,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:35,869 INFO L481 AbstractCegarLoop]: Abstraction has 4317 states and 5972 transitions. [2020-12-22 08:16:35,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:16:35,870 INFO L276 IsEmpty]: Start isEmpty. Operand 4317 states and 5972 transitions. [2020-12-22 08:16:35,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:16:35,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:35,875 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] [2020-12-22 08:16:35,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:16:35,876 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:35,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:35,877 INFO L82 PathProgramCache]: Analyzing trace with hash 303472925, now seen corresponding path program 1 times [2020-12-22 08:16:35,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:35,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904014591] [2020-12-22 08:16:35,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:36,157 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 08:16:36,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904014591] [2020-12-22 08:16:36,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:36,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:16:36,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898460722] [2020-12-22 08:16:36,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:16:36,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:36,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:16:36,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:16:36,161 INFO L87 Difference]: Start difference. First operand 4317 states and 5972 transitions. Second operand 9 states. [2020-12-22 08:16:40,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:40,505 INFO L93 Difference]: Finished difference Result 8362 states and 12150 transitions. [2020-12-22 08:16:40,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:16:40,506 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-12-22 08:16:40,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:40,542 INFO L225 Difference]: With dead ends: 8362 [2020-12-22 08:16:40,542 INFO L226 Difference]: Without dead ends: 8357 [2020-12-22 08:16:40,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2020-12-22 08:16:40,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8357 states. [2020-12-22 08:16:40,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8357 to 4317. [2020-12-22 08:16:40,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4317 states. [2020-12-22 08:16:40,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4317 states to 4317 states and 5971 transitions. [2020-12-22 08:16:40,869 INFO L78 Accepts]: Start accepts. Automaton has 4317 states and 5971 transitions. Word has length 53 [2020-12-22 08:16:40,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:40,872 INFO L481 AbstractCegarLoop]: Abstraction has 4317 states and 5971 transitions. [2020-12-22 08:16:40,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:16:40,872 INFO L276 IsEmpty]: Start isEmpty. Operand 4317 states and 5971 transitions. [2020-12-22 08:16:40,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:16:40,877 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:40,877 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] [2020-12-22 08:16:40,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:16:40,877 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:40,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:40,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1162103691, now seen corresponding path program 1 times [2020-12-22 08:16:40,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:40,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866403803] [2020-12-22 08:16:40,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:41,109 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 08:16:41,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866403803] [2020-12-22 08:16:41,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:41,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:16:41,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402173566] [2020-12-22 08:16:41,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:16:41,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:41,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:16:41,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:16:41,112 INFO L87 Difference]: Start difference. First operand 4317 states and 5971 transitions. Second operand 8 states. [2020-12-22 08:16:44,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:44,606 INFO L93 Difference]: Finished difference Result 9389 states and 13825 transitions. [2020-12-22 08:16:44,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 08:16:44,606 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-12-22 08:16:44,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:44,626 INFO L225 Difference]: With dead ends: 9389 [2020-12-22 08:16:44,627 INFO L226 Difference]: Without dead ends: 8063 [2020-12-22 08:16:44,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:16:44,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8063 states. [2020-12-22 08:16:44,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8063 to 4317. [2020-12-22 08:16:44,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4317 states. [2020-12-22 08:16:44,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4317 states to 4317 states and 5970 transitions. [2020-12-22 08:16:44,958 INFO L78 Accepts]: Start accepts. Automaton has 4317 states and 5970 transitions. Word has length 53 [2020-12-22 08:16:44,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:44,959 INFO L481 AbstractCegarLoop]: Abstraction has 4317 states and 5970 transitions. [2020-12-22 08:16:44,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:16:44,959 INFO L276 IsEmpty]: Start isEmpty. Operand 4317 states and 5970 transitions. [2020-12-22 08:16:44,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:16:44,963 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:44,963 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 08:16:44,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:16:44,963 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:44,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:44,964 INFO L82 PathProgramCache]: Analyzing trace with hash -482264145, now seen corresponding path program 1 times [2020-12-22 08:16:44,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:44,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958107425] [2020-12-22 08:16:44,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:45,032 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 08:16:45,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958107425] [2020-12-22 08:16:45,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:45,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:16:45,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341622401] [2020-12-22 08:16:45,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:16:45,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:45,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:16:45,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:45,036 INFO L87 Difference]: Start difference. First operand 4317 states and 5970 transitions. Second operand 3 states. [2020-12-22 08:16:45,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:45,523 INFO L93 Difference]: Finished difference Result 6299 states and 9033 transitions. [2020-12-22 08:16:45,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:16:45,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-22 08:16:45,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:45,535 INFO L225 Difference]: With dead ends: 6299 [2020-12-22 08:16:45,535 INFO L226 Difference]: Without dead ends: 4785 [2020-12-22 08:16:45,540 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 08:16:45,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4785 states. [2020-12-22 08:16:45,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4785 to 4449. [2020-12-22 08:16:45,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4449 states. [2020-12-22 08:16:45,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4449 states to 4449 states and 6193 transitions. [2020-12-22 08:16:45,979 INFO L78 Accepts]: Start accepts. Automaton has 4449 states and 6193 transitions. Word has length 54 [2020-12-22 08:16:45,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:45,981 INFO L481 AbstractCegarLoop]: Abstraction has 4449 states and 6193 transitions. [2020-12-22 08:16:45,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:16:45,981 INFO L276 IsEmpty]: Start isEmpty. Operand 4449 states and 6193 transitions. [2020-12-22 08:16:45,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:16:45,985 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:45,985 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 08:16:45,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:16:45,987 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:45,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:45,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1622556323, now seen corresponding path program 1 times [2020-12-22 08:16:45,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:45,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276699903] [2020-12-22 08:16:45,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:46,083 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 08:16:46,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276699903] [2020-12-22 08:16:46,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:46,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:16:46,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783713761] [2020-12-22 08:16:46,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:16:46,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:46,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:16:46,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:46,093 INFO L87 Difference]: Start difference. First operand 4449 states and 6193 transitions. Second operand 3 states. [2020-12-22 08:16:46,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:46,741 INFO L93 Difference]: Finished difference Result 7358 states and 10691 transitions. [2020-12-22 08:16:46,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:16:46,742 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-22 08:16:46,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:46,755 INFO L225 Difference]: With dead ends: 7358 [2020-12-22 08:16:46,755 INFO L226 Difference]: Without dead ends: 5413 [2020-12-22 08:16:46,761 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 08:16:46,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5413 states. [2020-12-22 08:16:47,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5413 to 4911. [2020-12-22 08:16:47,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4911 states. [2020-12-22 08:16:47,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4911 states to 4911 states and 6932 transitions. [2020-12-22 08:16:47,337 INFO L78 Accepts]: Start accepts. Automaton has 4911 states and 6932 transitions. Word has length 54 [2020-12-22 08:16:47,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:47,337 INFO L481 AbstractCegarLoop]: Abstraction has 4911 states and 6932 transitions. [2020-12-22 08:16:47,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:16:47,337 INFO L276 IsEmpty]: Start isEmpty. Operand 4911 states and 6932 transitions. [2020-12-22 08:16:47,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:16:47,340 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:47,341 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 08:16:47,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:16:47,341 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:47,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:47,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1612308197, now seen corresponding path program 1 times [2020-12-22 08:16:47,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:47,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418491449] [2020-12-22 08:16:47,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:47,390 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 08:16:47,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418491449] [2020-12-22 08:16:47,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:47,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:16:47,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962874452] [2020-12-22 08:16:47,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:16:47,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:47,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:16:47,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:47,393 INFO L87 Difference]: Start difference. First operand 4911 states and 6932 transitions. Second operand 3 states. [2020-12-22 08:16:48,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:48,183 INFO L93 Difference]: Finished difference Result 10905 states and 15715 transitions. [2020-12-22 08:16:48,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:16:48,183 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-22 08:16:48,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:48,201 INFO L225 Difference]: With dead ends: 10905 [2020-12-22 08:16:48,201 INFO L226 Difference]: Without dead ends: 7387 [2020-12-22 08:16:48,210 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 08:16:48,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7387 states. [2020-12-22 08:16:48,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7387 to 7381. [2020-12-22 08:16:48,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7381 states. [2020-12-22 08:16:48,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7381 states to 7381 states and 10349 transitions. [2020-12-22 08:16:48,859 INFO L78 Accepts]: Start accepts. Automaton has 7381 states and 10349 transitions. Word has length 54 [2020-12-22 08:16:48,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:48,860 INFO L481 AbstractCegarLoop]: Abstraction has 7381 states and 10349 transitions. [2020-12-22 08:16:48,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:16:48,860 INFO L276 IsEmpty]: Start isEmpty. Operand 7381 states and 10349 transitions. [2020-12-22 08:16:48,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:16:48,865 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:48,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:16:48,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:16:48,865 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:48,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:48,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1623263409, now seen corresponding path program 1 times [2020-12-22 08:16:48,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:48,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422202180] [2020-12-22 08:16:48,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:48,911 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 08:16:48,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422202180] [2020-12-22 08:16:48,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:48,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:16:48,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95280853] [2020-12-22 08:16:48,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:16:48,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:48,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:16:48,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:48,914 INFO L87 Difference]: Start difference. First operand 7381 states and 10349 transitions. Second operand 3 states. [2020-12-22 08:16:49,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:49,995 INFO L93 Difference]: Finished difference Result 15552 states and 22499 transitions. [2020-12-22 08:16:49,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:16:49,998 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-22 08:16:49,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:50,022 INFO L225 Difference]: With dead ends: 15552 [2020-12-22 08:16:50,022 INFO L226 Difference]: Without dead ends: 9779 [2020-12-22 08:16:50,032 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 08:16:50,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9779 states. [2020-12-22 08:16:50,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9779 to 7971. [2020-12-22 08:16:50,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7971 states. [2020-12-22 08:16:50,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7971 states to 7971 states and 11437 transitions. [2020-12-22 08:16:50,828 INFO L78 Accepts]: Start accepts. Automaton has 7971 states and 11437 transitions. Word has length 55 [2020-12-22 08:16:50,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:50,828 INFO L481 AbstractCegarLoop]: Abstraction has 7971 states and 11437 transitions. [2020-12-22 08:16:50,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:16:50,828 INFO L276 IsEmpty]: Start isEmpty. Operand 7971 states and 11437 transitions. [2020-12-22 08:16:50,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:16:50,832 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:50,832 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:16:50,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:16:50,833 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:50,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:50,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1493102210, now seen corresponding path program 1 times [2020-12-22 08:16:50,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:50,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682016474] [2020-12-22 08:16:50,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:50,873 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 08:16:50,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682016474] [2020-12-22 08:16:50,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:50,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:16:50,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831168724] [2020-12-22 08:16:50,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:16:50,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:50,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:16:50,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:50,875 INFO L87 Difference]: Start difference. First operand 7971 states and 11437 transitions. Second operand 3 states. [2020-12-22 08:16:52,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:52,139 INFO L93 Difference]: Finished difference Result 18601 states and 27366 transitions. [2020-12-22 08:16:52,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:16:52,140 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-22 08:16:52,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:52,167 INFO L225 Difference]: With dead ends: 18601 [2020-12-22 08:16:52,168 INFO L226 Difference]: Without dead ends: 11765 [2020-12-22 08:16:52,179 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 08:16:52,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11765 states. [2020-12-22 08:16:53,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11765 to 9295. [2020-12-22 08:16:53,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9295 states. [2020-12-22 08:16:53,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9295 states to 9295 states and 13581 transitions. [2020-12-22 08:16:53,205 INFO L78 Accepts]: Start accepts. Automaton has 9295 states and 13581 transitions. Word has length 55 [2020-12-22 08:16:53,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:53,206 INFO L481 AbstractCegarLoop]: Abstraction has 9295 states and 13581 transitions. [2020-12-22 08:16:53,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:16:53,206 INFO L276 IsEmpty]: Start isEmpty. Operand 9295 states and 13581 transitions. [2020-12-22 08:16:53,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:16:53,208 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:53,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:16:53,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:16:53,209 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:53,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:53,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1419432604, now seen corresponding path program 1 times [2020-12-22 08:16:53,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:53,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792359670] [2020-12-22 08:16:53,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:53,248 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 08:16:53,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792359670] [2020-12-22 08:16:53,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:53,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:16:53,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415612212] [2020-12-22 08:16:53,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:16:53,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:53,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:16:53,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:53,250 INFO L87 Difference]: Start difference. First operand 9295 states and 13581 transitions. Second operand 3 states. [2020-12-22 08:16:54,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:54,680 INFO L93 Difference]: Finished difference Result 19526 states and 28791 transitions. [2020-12-22 08:16:54,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:16:54,680 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-22 08:16:54,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:54,704 INFO L225 Difference]: With dead ends: 19526 [2020-12-22 08:16:54,705 INFO L226 Difference]: Without dead ends: 10598 [2020-12-22 08:16:54,717 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 08:16:54,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10598 states. [2020-12-22 08:16:55,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10598 to 8583. [2020-12-22 08:16:55,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8583 states. [2020-12-22 08:16:55,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8583 states to 8583 states and 12619 transitions. [2020-12-22 08:16:55,650 INFO L78 Accepts]: Start accepts. Automaton has 8583 states and 12619 transitions. Word has length 55 [2020-12-22 08:16:55,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:55,651 INFO L481 AbstractCegarLoop]: Abstraction has 8583 states and 12619 transitions. [2020-12-22 08:16:55,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:16:55,651 INFO L276 IsEmpty]: Start isEmpty. Operand 8583 states and 12619 transitions. [2020-12-22 08:16:55,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:16:55,652 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:55,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:16:55,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:16:55,653 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:55,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:55,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1871407914, now seen corresponding path program 1 times [2020-12-22 08:16:55,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:55,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189164023] [2020-12-22 08:16:55,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:56,500 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 08:16:56,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189164023] [2020-12-22 08:16:56,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:56,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:16:56,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978951004] [2020-12-22 08:16:56,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:16:56,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:56,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:16:56,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:16:56,503 INFO L87 Difference]: Start difference. First operand 8583 states and 12619 transitions. Second operand 19 states. [2020-12-22 08:16:56,723 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-12-22 08:16:57,686 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-12-22 08:16:57,946 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-12-22 08:16:58,262 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-12-22 08:16:58,466 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-12-22 08:16:58,722 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-12-22 08:16:59,229 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-12-22 08:16:59,675 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-22 08:16:59,978 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-12-22 08:17:00,697 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 08:17:03,791 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-12-22 08:17:04,518 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-12-22 08:17:05,440 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-12-22 08:17:10,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:10,110 INFO L93 Difference]: Finished difference Result 32954 states and 49196 transitions. [2020-12-22 08:17:10,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 08:17:10,110 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 56 [2020-12-22 08:17:10,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:10,149 INFO L225 Difference]: With dead ends: 32954 [2020-12-22 08:17:10,149 INFO L226 Difference]: Without dead ends: 32950 [2020-12-22 08:17:10,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=310, Invalid=1412, Unknown=0, NotChecked=0, Total=1722 [2020-12-22 08:17:10,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32950 states. [2020-12-22 08:17:11,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32950 to 8583. [2020-12-22 08:17:11,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8583 states. [2020-12-22 08:17:11,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8583 states to 8583 states and 12618 transitions. [2020-12-22 08:17:11,490 INFO L78 Accepts]: Start accepts. Automaton has 8583 states and 12618 transitions. Word has length 56 [2020-12-22 08:17:11,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:11,491 INFO L481 AbstractCegarLoop]: Abstraction has 8583 states and 12618 transitions. [2020-12-22 08:17:11,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:17:11,491 INFO L276 IsEmpty]: Start isEmpty. Operand 8583 states and 12618 transitions. [2020-12-22 08:17:11,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:17:11,492 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:11,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:11,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:17:11,493 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:11,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:11,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1094868748, now seen corresponding path program 1 times [2020-12-22 08:17:11,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:11,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631533557] [2020-12-22 08:17:11,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:12,183 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 08:17:12,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631533557] [2020-12-22 08:17:12,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:12,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:17:12,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349079758] [2020-12-22 08:17:12,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:17:12,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:12,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:17:12,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:17:12,186 INFO L87 Difference]: Start difference. First operand 8583 states and 12618 transitions. Second operand 19 states. [2020-12-22 08:17:12,393 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-12-22 08:17:13,146 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-22 08:17:13,968 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-12-22 08:17:22,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:22,597 INFO L93 Difference]: Finished difference Result 23920 states and 35606 transitions. [2020-12-22 08:17:22,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 08:17:22,598 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 56 [2020-12-22 08:17:22,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:22,625 INFO L225 Difference]: With dead ends: 23920 [2020-12-22 08:17:22,625 INFO L226 Difference]: Without dead ends: 23916 [2020-12-22 08:17:22,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=273, Invalid=987, Unknown=0, NotChecked=0, Total=1260 [2020-12-22 08:17:22,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23916 states. [2020-12-22 08:17:23,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23916 to 8583. [2020-12-22 08:17:23,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8583 states. [2020-12-22 08:17:23,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8583 states to 8583 states and 12617 transitions. [2020-12-22 08:17:23,986 INFO L78 Accepts]: Start accepts. Automaton has 8583 states and 12617 transitions. Word has length 56 [2020-12-22 08:17:23,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:23,986 INFO L481 AbstractCegarLoop]: Abstraction has 8583 states and 12617 transitions. [2020-12-22 08:17:23,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:17:23,986 INFO L276 IsEmpty]: Start isEmpty. Operand 8583 states and 12617 transitions. [2020-12-22 08:17:23,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:17:23,988 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:23,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:23,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:17:23,989 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:23,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:23,989 INFO L82 PathProgramCache]: Analyzing trace with hash 557999134, now seen corresponding path program 1 times [2020-12-22 08:17:23,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:23,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193730282] [2020-12-22 08:17:23,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:24,713 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 08:17:24,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193730282] [2020-12-22 08:17:24,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:24,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:17:24,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493545531] [2020-12-22 08:17:24,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:17:24,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:24,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:17:24,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:17:24,715 INFO L87 Difference]: Start difference. First operand 8583 states and 12617 transitions. Second operand 19 states. [2020-12-22 08:17:25,035 WARN L197 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-12-22 08:17:25,595 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2020-12-22 08:17:25,971 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-22 08:17:26,297 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-12-22 08:17:26,648 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-22 08:17:26,865 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-22 08:17:27,156 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-12-22 08:17:27,431 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-12-22 08:17:27,708 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2020-12-22 08:17:28,257 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-12-22 08:17:28,518 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2020-12-22 08:17:28,727 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2020-12-22 08:17:32,624 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-12-22 08:17:36,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:36,461 INFO L93 Difference]: Finished difference Result 22835 states and 34045 transitions. [2020-12-22 08:17:36,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 08:17:36,462 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 56 [2020-12-22 08:17:36,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:36,483 INFO L225 Difference]: With dead ends: 22835 [2020-12-22 08:17:36,483 INFO L226 Difference]: Without dead ends: 22829 [2020-12-22 08:17:36,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=335, Invalid=1147, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 08:17:36,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22829 states. [2020-12-22 08:17:37,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22829 to 8583. [2020-12-22 08:17:37,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8583 states. [2020-12-22 08:17:37,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8583 states to 8583 states and 12616 transitions. [2020-12-22 08:17:37,893 INFO L78 Accepts]: Start accepts. Automaton has 8583 states and 12616 transitions. Word has length 56 [2020-12-22 08:17:37,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:37,893 INFO L481 AbstractCegarLoop]: Abstraction has 8583 states and 12616 transitions. [2020-12-22 08:17:37,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:17:37,893 INFO L276 IsEmpty]: Start isEmpty. Operand 8583 states and 12616 transitions. [2020-12-22 08:17:37,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:17:37,895 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:37,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:37,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:17:37,896 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:37,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:37,896 INFO L82 PathProgramCache]: Analyzing trace with hash 513328539, now seen corresponding path program 1 times [2020-12-22 08:17:37,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:37,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569871018] [2020-12-22 08:17:37,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:38,563 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2020-12-22 08:17:39,114 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 08:17:39,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569871018] [2020-12-22 08:17:39,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:39,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-12-22 08:17:39,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289679528] [2020-12-22 08:17:39,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 08:17:39,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:39,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 08:17:39,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:17:39,116 INFO L87 Difference]: Start difference. First operand 8583 states and 12616 transitions. Second operand 16 states. [2020-12-22 08:17:39,388 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2020-12-22 08:17:39,544 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2020-12-22 08:17:39,757 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-12-22 08:17:39,980 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-12-22 08:17:40,340 WARN L197 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-12-22 08:17:40,631 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2020-12-22 08:17:41,035 WARN L197 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-12-22 08:17:41,543 WARN L197 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2020-12-22 08:17:42,016 WARN L197 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2020-12-22 08:17:42,533 WARN L197 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2020-12-22 08:17:42,981 WARN L197 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2020-12-22 08:17:43,214 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-12-22 08:17:43,551 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2020-12-22 08:17:44,015 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2020-12-22 08:17:44,974 WARN L197 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-12-22 08:17:45,500 WARN L197 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2020-12-22 08:17:53,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:53,555 INFO L93 Difference]: Finished difference Result 25405 states and 37667 transitions. [2020-12-22 08:17:53,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:17:53,556 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 56 [2020-12-22 08:17:53,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:53,583 INFO L225 Difference]: With dead ends: 25405 [2020-12-22 08:17:53,584 INFO L226 Difference]: Without dead ends: 25023 [2020-12-22 08:17:53,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2020-12-22 08:17:53,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25023 states. [2020-12-22 08:17:55,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25023 to 8571. [2020-12-22 08:17:55,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8571 states. [2020-12-22 08:17:55,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8571 states to 8571 states and 12603 transitions. [2020-12-22 08:17:55,401 INFO L78 Accepts]: Start accepts. Automaton has 8571 states and 12603 transitions. Word has length 56 [2020-12-22 08:17:55,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:55,401 INFO L481 AbstractCegarLoop]: Abstraction has 8571 states and 12603 transitions. [2020-12-22 08:17:55,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 08:17:55,401 INFO L276 IsEmpty]: Start isEmpty. Operand 8571 states and 12603 transitions. [2020-12-22 08:17:55,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:17:55,403 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:55,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:55,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:17:55,403 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:55,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:55,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1785706246, now seen corresponding path program 1 times [2020-12-22 08:17:55,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:55,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514497629] [2020-12-22 08:17:55,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:56,055 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 08:17:56,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514497629] [2020-12-22 08:17:56,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:56,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-22 08:17:56,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982211856] [2020-12-22 08:17:56,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 08:17:56,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:56,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 08:17:56,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-12-22 08:17:56,059 INFO L87 Difference]: Start difference. First operand 8571 states and 12603 transitions. Second operand 14 states. [2020-12-22 08:17:56,416 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-12-22 08:17:57,063 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:18:03,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:03,578 INFO L93 Difference]: Finished difference Result 19819 states and 29278 transitions. [2020-12-22 08:18:03,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 08:18:03,579 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 57 [2020-12-22 08:18:03,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:03,600 INFO L225 Difference]: With dead ends: 19819 [2020-12-22 08:18:03,600 INFO L226 Difference]: Without dead ends: 19815 [2020-12-22 08:18:03,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2020-12-22 08:18:03,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19815 states. [2020-12-22 08:18:05,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19815 to 8567. [2020-12-22 08:18:05,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8567 states. [2020-12-22 08:18:05,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8567 states to 8567 states and 12599 transitions. [2020-12-22 08:18:05,544 INFO L78 Accepts]: Start accepts. Automaton has 8567 states and 12599 transitions. Word has length 57 [2020-12-22 08:18:05,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:05,544 INFO L481 AbstractCegarLoop]: Abstraction has 8567 states and 12599 transitions. [2020-12-22 08:18:05,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 08:18:05,545 INFO L276 IsEmpty]: Start isEmpty. Operand 8567 states and 12599 transitions. [2020-12-22 08:18:05,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:18:05,546 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:05,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:18:05,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:18:05,546 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:18:05,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:05,547 INFO L82 PathProgramCache]: Analyzing trace with hash 247888215, now seen corresponding path program 1 times [2020-12-22 08:18:05,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:05,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834015859] [2020-12-22 08:18:05,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:06,343 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 08:18:06,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834015859] [2020-12-22 08:18:06,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:06,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-12-22 08:18:06,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251531596] [2020-12-22 08:18:06,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 08:18:06,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:06,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 08:18:06,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:18:06,345 INFO L87 Difference]: Start difference. First operand 8567 states and 12599 transitions. Second operand 15 states. [2020-12-22 08:18:06,489 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-12-22 08:18:06,777 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2020-12-22 08:18:06,939 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-12-22 08:18:07,097 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-12-22 08:18:07,345 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-12-22 08:18:07,644 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-12-22 08:18:07,894 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-12-22 08:18:08,211 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-12-22 08:18:09,031 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-12-22 08:18:09,627 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-12-22 08:18:16,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:16,330 INFO L93 Difference]: Finished difference Result 18460 states and 27281 transitions. [2020-12-22 08:18:16,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 08:18:16,331 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-12-22 08:18:16,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:16,349 INFO L225 Difference]: With dead ends: 18460 [2020-12-22 08:18:16,349 INFO L226 Difference]: Without dead ends: 18041 [2020-12-22 08:18:16,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2020-12-22 08:18:16,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18041 states. [2020-12-22 08:18:18,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18041 to 8522. [2020-12-22 08:18:18,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8522 states. [2020-12-22 08:18:18,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8522 states to 8522 states and 12537 transitions. [2020-12-22 08:18:18,327 INFO L78 Accepts]: Start accepts. Automaton has 8522 states and 12537 transitions. Word has length 57 [2020-12-22 08:18:18,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:18,327 INFO L481 AbstractCegarLoop]: Abstraction has 8522 states and 12537 transitions. [2020-12-22 08:18:18,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 08:18:18,327 INFO L276 IsEmpty]: Start isEmpty. Operand 8522 states and 12537 transitions. [2020-12-22 08:18:18,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 08:18:18,330 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:18,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:18:18,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:18:18,331 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:18:18,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:18,331 INFO L82 PathProgramCache]: Analyzing trace with hash -101338621, now seen corresponding path program 1 times [2020-12-22 08:18:18,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:18,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936229802] [2020-12-22 08:18:18,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:18,384 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 08:18:18,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936229802] [2020-12-22 08:18:18,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:18,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:18:18,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598967473] [2020-12-22 08:18:18,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:18:18,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:18,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:18:18,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:18:18,386 INFO L87 Difference]: Start difference. First operand 8522 states and 12537 transitions. Second operand 3 states. [2020-12-22 08:18:21,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:21,932 INFO L93 Difference]: Finished difference Result 21747 states and 32203 transitions. [2020-12-22 08:18:21,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:18:21,933 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-22 08:18:21,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:21,947 INFO L225 Difference]: With dead ends: 21747 [2020-12-22 08:18:21,947 INFO L226 Difference]: Without dead ends: 14115 [2020-12-22 08:18:21,955 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 08:18:21,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14115 states. [2020-12-22 08:18:25,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14115 to 14113. [2020-12-22 08:18:25,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14113 states. [2020-12-22 08:18:25,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14113 states to 14113 states and 20525 transitions. [2020-12-22 08:18:25,201 INFO L78 Accepts]: Start accepts. Automaton has 14113 states and 20525 transitions. Word has length 63 [2020-12-22 08:18:25,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:25,201 INFO L481 AbstractCegarLoop]: Abstraction has 14113 states and 20525 transitions. [2020-12-22 08:18:25,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:18:25,201 INFO L276 IsEmpty]: Start isEmpty. Operand 14113 states and 20525 transitions. [2020-12-22 08:18:25,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:18:25,205 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:25,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:18:25,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:18:25,206 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:18:25,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:25,206 INFO L82 PathProgramCache]: Analyzing trace with hash 838129574, now seen corresponding path program 1 times [2020-12-22 08:18:25,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:25,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615970021] [2020-12-22 08:18:25,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:25,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:25,284 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 08:18:25,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615970021] [2020-12-22 08:18:25,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:25,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:18:25,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940729620] [2020-12-22 08:18:25,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:18:25,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:25,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:18:25,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:18:25,286 INFO L87 Difference]: Start difference. First operand 14113 states and 20525 transitions. Second operand 5 states. [2020-12-22 08:18:28,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:28,504 INFO L93 Difference]: Finished difference Result 25567 states and 37308 transitions. [2020-12-22 08:18:28,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:18:28,504 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-12-22 08:18:28,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:28,516 INFO L225 Difference]: With dead ends: 25567 [2020-12-22 08:18:28,516 INFO L226 Difference]: Without dead ends: 12333 [2020-12-22 08:18:28,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:18:28,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12333 states. [2020-12-22 08:18:31,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12333 to 12329. [2020-12-22 08:18:31,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12329 states. [2020-12-22 08:18:31,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12329 states to 12329 states and 17825 transitions. [2020-12-22 08:18:31,685 INFO L78 Accepts]: Start accepts. Automaton has 12329 states and 17825 transitions. Word has length 64 [2020-12-22 08:18:31,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:31,685 INFO L481 AbstractCegarLoop]: Abstraction has 12329 states and 17825 transitions. [2020-12-22 08:18:31,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:18:31,685 INFO L276 IsEmpty]: Start isEmpty. Operand 12329 states and 17825 transitions. [2020-12-22 08:18:31,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:18:31,690 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:31,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:18:31,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 08:18:31,690 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:18:31,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:31,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1809556404, now seen corresponding path program 1 times [2020-12-22 08:18:31,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:31,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201176825] [2020-12-22 08:18:31,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:31,753 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 08:18:31,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201176825] [2020-12-22 08:18:31,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:31,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:18:31,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709361344] [2020-12-22 08:18:31,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:18:31,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:31,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:18:31,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:18:31,756 INFO L87 Difference]: Start difference. First operand 12329 states and 17825 transitions. Second operand 3 states. [2020-12-22 08:18:37,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:37,262 INFO L93 Difference]: Finished difference Result 32989 states and 47923 transitions. [2020-12-22 08:18:37,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:18:37,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 08:18:37,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:37,286 INFO L225 Difference]: With dead ends: 32989 [2020-12-22 08:18:37,286 INFO L226 Difference]: Without dead ends: 21516 [2020-12-22 08:18:37,297 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 08:18:37,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21516 states. [2020-12-22 08:18:42,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21516 to 20214. [2020-12-22 08:18:42,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20214 states. [2020-12-22 08:18:42,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20214 states to 20214 states and 29111 transitions. [2020-12-22 08:18:42,767 INFO L78 Accepts]: Start accepts. Automaton has 20214 states and 29111 transitions. Word has length 66 [2020-12-22 08:18:42,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:42,767 INFO L481 AbstractCegarLoop]: Abstraction has 20214 states and 29111 transitions. [2020-12-22 08:18:42,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:18:42,767 INFO L276 IsEmpty]: Start isEmpty. Operand 20214 states and 29111 transitions. [2020-12-22 08:18:42,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:18:42,770 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:42,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:18:42,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 08:18:42,770 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:18:42,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:42,771 INFO L82 PathProgramCache]: Analyzing trace with hash 827517135, now seen corresponding path program 1 times [2020-12-22 08:18:42,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:42,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365103336] [2020-12-22 08:18:42,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:42,821 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 08:18:42,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365103336] [2020-12-22 08:18:42,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:42,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:18:42,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133563423] [2020-12-22 08:18:42,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:18:42,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:42,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:18:42,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:18:42,823 INFO L87 Difference]: Start difference. First operand 20214 states and 29111 transitions. Second operand 3 states. [2020-12-22 08:18:52,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:52,362 INFO L93 Difference]: Finished difference Result 54990 states and 79237 transitions. [2020-12-22 08:18:52,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:18:52,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 08:18:52,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:52,404 INFO L225 Difference]: With dead ends: 54990 [2020-12-22 08:18:52,405 INFO L226 Difference]: Without dead ends: 35632 [2020-12-22 08:18:52,425 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 08:18:52,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35632 states. [2020-12-22 08:19:01,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35632 to 33194. [2020-12-22 08:19:01,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33194 states. [2020-12-22 08:19:01,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33194 states to 33194 states and 47395 transitions. [2020-12-22 08:19:01,459 INFO L78 Accepts]: Start accepts. Automaton has 33194 states and 47395 transitions. Word has length 66 [2020-12-22 08:19:01,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:19:01,459 INFO L481 AbstractCegarLoop]: Abstraction has 33194 states and 47395 transitions. [2020-12-22 08:19:01,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:19:01,459 INFO L276 IsEmpty]: Start isEmpty. Operand 33194 states and 47395 transitions. [2020-12-22 08:19:01,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:19:01,462 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:01,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:19:01,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 08:19:01,463 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:19:01,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:01,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1051118849, now seen corresponding path program 1 times [2020-12-22 08:19:01,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:01,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731799132] [2020-12-22 08:19:01,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:01,568 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 08:19:01,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731799132] [2020-12-22 08:19:01,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:01,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:19:01,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511387885] [2020-12-22 08:19:01,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:19:01,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:01,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:19:01,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:19:01,571 INFO L87 Difference]: Start difference. First operand 33194 states and 47395 transitions. Second operand 6 states. [2020-12-22 08:19:19,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:19,384 INFO L93 Difference]: Finished difference Result 59259 states and 83016 transitions. [2020-12-22 08:19:19,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:19:19,385 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-12-22 08:19:19,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:19,450 INFO L225 Difference]: With dead ends: 59259 [2020-12-22 08:19:19,450 INFO L226 Difference]: Without dead ends: 59257 [2020-12-22 08:19:19,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:19:19,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59257 states. [2020-12-22 08:19:30,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59257 to 34736. [2020-12-22 08:19:30,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34736 states. [2020-12-22 08:19:30,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34736 states to 34736 states and 48937 transitions. [2020-12-22 08:19:30,258 INFO L78 Accepts]: Start accepts. Automaton has 34736 states and 48937 transitions. Word has length 68 [2020-12-22 08:19:30,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:19:30,258 INFO L481 AbstractCegarLoop]: Abstraction has 34736 states and 48937 transitions. [2020-12-22 08:19:30,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:19:30,259 INFO L276 IsEmpty]: Start isEmpty. Operand 34736 states and 48937 transitions. [2020-12-22 08:19:30,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:19:30,261 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:30,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:19:30,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 08:19:30,261 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:19:30,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:30,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1654492608, now seen corresponding path program 1 times [2020-12-22 08:19:30,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:30,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082767592] [2020-12-22 08:19:30,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:30,329 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 08:19:30,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082767592] [2020-12-22 08:19:30,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:30,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:19:30,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805494745] [2020-12-22 08:19:30,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:19:30,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:30,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:19:30,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:19:30,331 INFO L87 Difference]: Start difference. First operand 34736 states and 48937 transitions. Second operand 3 states. [2020-12-22 08:19:48,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:48,517 INFO L93 Difference]: Finished difference Result 92174 states and 129136 transitions. [2020-12-22 08:19:48,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:19:48,518 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 08:19:48,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:48,593 INFO L225 Difference]: With dead ends: 92174 [2020-12-22 08:19:48,593 INFO L226 Difference]: Without dead ends: 58218 [2020-12-22 08:19:48,809 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 08:19:48,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58218 states. [2020-12-22 08:20:06,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58218 to 57188. [2020-12-22 08:20:06,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57188 states. [2020-12-22 08:20:06,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57188 states to 57188 states and 78680 transitions. [2020-12-22 08:20:06,195 INFO L78 Accepts]: Start accepts. Automaton has 57188 states and 78680 transitions. Word has length 69 [2020-12-22 08:20:06,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:06,196 INFO L481 AbstractCegarLoop]: Abstraction has 57188 states and 78680 transitions. [2020-12-22 08:20:06,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:20:06,196 INFO L276 IsEmpty]: Start isEmpty. Operand 57188 states and 78680 transitions. [2020-12-22 08:20:06,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:20:06,201 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:06,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:20:06,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 08:20:06,201 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:06,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:06,201 INFO L82 PathProgramCache]: Analyzing trace with hash 324913683, now seen corresponding path program 1 times [2020-12-22 08:20:06,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:06,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536922533] [2020-12-22 08:20:06,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:06,347 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 08:20:06,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536922533] [2020-12-22 08:20:06,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:06,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:20:06,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897527329] [2020-12-22 08:20:06,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:20:06,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:06,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:20:06,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:20:06,349 INFO L87 Difference]: Start difference. First operand 57188 states and 78680 transitions. Second operand 6 states.