/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_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:04:55,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:04:55,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:04:55,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:04:55,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:04:55,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:04:55,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:04:55,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:04:55,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:04:55,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:04:55,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:04:55,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:04:55,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:04:55,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:04:55,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:04:55,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:04:55,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:04:55,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:04:55,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:04:55,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:04:55,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:04:55,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:04:55,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:04:55,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:04:55,326 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 09:04:55,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 09:04:55,327 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 09:04:55,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 09:04:55,328 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 09:04:55,330 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 09:04:55,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 09:04:55,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 09:04:55,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 09:04:55,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 09:04:55,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 09:04:55,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 09:04:55,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 09:04:55,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 09:04:55,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:04:55,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:04:55,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:04:55,340 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:04:55,396 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:04:55,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:04:55,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:04:55,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:04:55,399 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:04:55,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:04:55,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:04:55,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:04:55,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:04:55,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:04:55,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:04:55,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:04:55,401 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:04:55,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:04:55,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:04:55,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:04:55,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:04:55,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:04:55,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:04:55,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:04:55,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:04:55,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:04:55,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:04:55,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:04:55,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:04:55,405 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:04:55,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:04:55,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:04:55,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:04:55,787 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:04:55,788 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:04:55,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-12-22 09:04:55,873 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6340fc05f/a557e7b64c5c4b60ac08e7ef14ccda9e/FLAGd01f7a8da [2020-12-22 09:04:56,550 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:04:56,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-12-22 09:04:56,568 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6340fc05f/a557e7b64c5c4b60ac08e7ef14ccda9e/FLAGd01f7a8da [2020-12-22 09:04:56,799 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6340fc05f/a557e7b64c5c4b60ac08e7ef14ccda9e [2020-12-22 09:04:56,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:04:56,805 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:04:56,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:04:56,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:04:56,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:04:56,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:04:56" (1/1) ... [2020-12-22 09:04:56,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@153b013e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:56, skipping insertion in model container [2020-12-22 09:04:56,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:04:56" (1/1) ... [2020-12-22 09:04:56,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:04:56,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:04:57,425 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_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15207,15220] [2020-12-22 09:04:57,439 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_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15854,15867] [2020-12-22 09:04:57,455 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_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17195,17208] [2020-12-22 09:04:57,468 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_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18255,18268] [2020-12-22 09:04:57,542 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_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27540,27553] [2020-12-22 09:04:57,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:04:57,669 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:04:57,813 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_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15207,15220] [2020-12-22 09:04:57,821 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_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15854,15867] [2020-12-22 09:04:57,833 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_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17195,17208] [2020-12-22 09:04:57,843 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_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18255,18268] [2020-12-22 09:04:57,896 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_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27540,27553] [2020-12-22 09:04:57,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:04:57,966 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:04:57,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:57 WrapperNode [2020-12-22 09:04:57,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:04:57,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:04:57,968 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:04:57,968 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:04:57,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:57" (1/1) ... [2020-12-22 09:04:58,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:57" (1/1) ... [2020-12-22 09:04:58,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:04:58,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:04:58,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:04:58,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:04:58,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:57" (1/1) ... [2020-12-22 09:04:58,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:57" (1/1) ... [2020-12-22 09:04:58,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:57" (1/1) ... [2020-12-22 09:04:58,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:57" (1/1) ... [2020-12-22 09:04:58,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:57" (1/1) ... [2020-12-22 09:04:58,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:57" (1/1) ... [2020-12-22 09:04:58,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:57" (1/1) ... [2020-12-22 09:04:58,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:04:58,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:04:58,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:04:58,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:04:58,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:57" (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 09:04:58,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:04:58,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:04:58,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:04:58,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:05:00,432 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:05:00,433 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:05:00,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:05:00 BoogieIcfgContainer [2020-12-22 09:05:00,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:05:00,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:05:00,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:05:00,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:05:00,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:04:56" (1/3) ... [2020-12-22 09:05:00,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295d67bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:05:00, skipping insertion in model container [2020-12-22 09:05:00,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:57" (2/3) ... [2020-12-22 09:05:00,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295d67bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:05:00, skipping insertion in model container [2020-12-22 09:05:00,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:05:00" (3/3) ... [2020-12-22 09:05:00,444 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-12-22 09:05:00,450 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:05:00,456 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 09:05:00,475 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 09:05:00,505 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:05:00,505 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:05:00,505 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:05:00,506 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:05:00,506 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:05:00,506 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:05:00,506 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:05:00,506 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:05:00,532 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-12-22 09:05:00,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 09:05:00,549 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:00,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:05:00,551 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:00,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:00,558 INFO L82 PathProgramCache]: Analyzing trace with hash -258097786, now seen corresponding path program 1 times [2020-12-22 09:05:00,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:00,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29723752] [2020-12-22 09:05:00,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:01,254 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 09:05:01,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29723752] [2020-12-22 09:05:01,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:01,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:05:01,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260189231] [2020-12-22 09:05:01,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:05:01,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:01,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:05:01,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:01,279 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 3 states. [2020-12-22 09:05:01,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:01,644 INFO L93 Difference]: Finished difference Result 763 states and 1344 transitions. [2020-12-22 09:05:01,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:05:01,646 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-12-22 09:05:01,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:01,666 INFO L225 Difference]: With dead ends: 763 [2020-12-22 09:05:01,666 INFO L226 Difference]: Without dead ends: 629 [2020-12-22 09:05:01,670 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 09:05:01,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2020-12-22 09:05:01,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 627. [2020-12-22 09:05:01,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 627 states. [2020-12-22 09:05:01,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 925 transitions. [2020-12-22 09:05:01,763 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 925 transitions. Word has length 148 [2020-12-22 09:05:01,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:01,764 INFO L481 AbstractCegarLoop]: Abstraction has 627 states and 925 transitions. [2020-12-22 09:05:01,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:05:01,765 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 925 transitions. [2020-12-22 09:05:01,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 09:05:01,769 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:01,770 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:01,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:05:01,770 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:01,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:01,771 INFO L82 PathProgramCache]: Analyzing trace with hash -258528762, now seen corresponding path program 1 times [2020-12-22 09:05:01,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:01,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618303720] [2020-12-22 09:05:01,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:02,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:02,280 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 09:05:02,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618303720] [2020-12-22 09:05:02,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:02,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:05:02,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199378324] [2020-12-22 09:05:02,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:05:02,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:02,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:05:02,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:05:02,286 INFO L87 Difference]: Start difference. First operand 627 states and 925 transitions. Second operand 4 states. [2020-12-22 09:05:02,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:02,502 INFO L93 Difference]: Finished difference Result 1834 states and 2696 transitions. [2020-12-22 09:05:02,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:05:02,503 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-12-22 09:05:02,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:02,511 INFO L225 Difference]: With dead ends: 1834 [2020-12-22 09:05:02,512 INFO L226 Difference]: Without dead ends: 1216 [2020-12-22 09:05:02,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:05:02,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2020-12-22 09:05:02,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1176. [2020-12-22 09:05:02,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1176 states. [2020-12-22 09:05:02,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1728 transitions. [2020-12-22 09:05:02,613 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1728 transitions. Word has length 148 [2020-12-22 09:05:02,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:02,613 INFO L481 AbstractCegarLoop]: Abstraction has 1176 states and 1728 transitions. [2020-12-22 09:05:02,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:05:02,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1728 transitions. [2020-12-22 09:05:02,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-12-22 09:05:02,617 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:02,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:05:02,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:05:02,618 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:02,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:02,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1055269914, now seen corresponding path program 1 times [2020-12-22 09:05:02,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:02,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245909676] [2020-12-22 09:05:02,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:02,693 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 09:05:02,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245909676] [2020-12-22 09:05:02,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:02,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:05:02,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259398105] [2020-12-22 09:05:02,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:05:02,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:02,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:05:02,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:02,696 INFO L87 Difference]: Start difference. First operand 1176 states and 1728 transitions. Second operand 3 states. [2020-12-22 09:05:02,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:02,825 INFO L93 Difference]: Finished difference Result 3490 states and 5122 transitions. [2020-12-22 09:05:02,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:05:02,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2020-12-22 09:05:02,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:02,839 INFO L225 Difference]: With dead ends: 3490 [2020-12-22 09:05:02,839 INFO L226 Difference]: Without dead ends: 2342 [2020-12-22 09:05:02,841 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 09:05:02,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2020-12-22 09:05:02,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 1178. [2020-12-22 09:05:02,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1178 states. [2020-12-22 09:05:02,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1730 transitions. [2020-12-22 09:05:02,934 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1730 transitions. Word has length 149 [2020-12-22 09:05:02,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:02,935 INFO L481 AbstractCegarLoop]: Abstraction has 1178 states and 1730 transitions. [2020-12-22 09:05:02,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:05:02,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1730 transitions. [2020-12-22 09:05:02,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-12-22 09:05:02,946 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:02,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:05:02,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:05:02,948 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:02,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:02,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1802650041, now seen corresponding path program 1 times [2020-12-22 09:05:02,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:02,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706224636] [2020-12-22 09:05:02,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:03,355 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 09:05:03,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706224636] [2020-12-22 09:05:03,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:03,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:05:03,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422976268] [2020-12-22 09:05:03,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:05:03,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:03,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:05:03,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:05:03,364 INFO L87 Difference]: Start difference. First operand 1178 states and 1730 transitions. Second operand 4 states. [2020-12-22 09:05:03,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:03,671 INFO L93 Difference]: Finished difference Result 3420 states and 5002 transitions. [2020-12-22 09:05:03,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:05:03,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-12-22 09:05:03,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:03,687 INFO L225 Difference]: With dead ends: 3420 [2020-12-22 09:05:03,688 INFO L226 Difference]: Without dead ends: 2272 [2020-12-22 09:05:03,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:05:03,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2020-12-22 09:05:03,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 2232. [2020-12-22 09:05:03,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2232 states. [2020-12-22 09:05:03,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2232 states to 2232 states and 3253 transitions. [2020-12-22 09:05:03,868 INFO L78 Accepts]: Start accepts. Automaton has 2232 states and 3253 transitions. Word has length 150 [2020-12-22 09:05:03,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:03,870 INFO L481 AbstractCegarLoop]: Abstraction has 2232 states and 3253 transitions. [2020-12-22 09:05:03,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:05:03,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2232 states and 3253 transitions. [2020-12-22 09:05:03,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-22 09:05:03,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:03,875 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:03,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:05:03,876 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:03,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:03,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1402587067, now seen corresponding path program 1 times [2020-12-22 09:05:03,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:03,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488424724] [2020-12-22 09:05:03,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:03,952 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 09:05:03,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488424724] [2020-12-22 09:05:03,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:03,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:05:03,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904272445] [2020-12-22 09:05:03,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:05:03,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:03,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:05:03,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:03,955 INFO L87 Difference]: Start difference. First operand 2232 states and 3253 transitions. Second operand 3 states. [2020-12-22 09:05:04,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:04,310 INFO L93 Difference]: Finished difference Result 6620 states and 9639 transitions. [2020-12-22 09:05:04,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:05:04,311 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 151 [2020-12-22 09:05:04,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:04,334 INFO L225 Difference]: With dead ends: 6620 [2020-12-22 09:05:04,334 INFO L226 Difference]: Without dead ends: 4432 [2020-12-22 09:05:04,341 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 09:05:04,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4432 states. [2020-12-22 09:05:04,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4432 to 2236. [2020-12-22 09:05:04,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2236 states. [2020-12-22 09:05:04,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 3257 transitions. [2020-12-22 09:05:04,551 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 3257 transitions. Word has length 151 [2020-12-22 09:05:04,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:04,551 INFO L481 AbstractCegarLoop]: Abstraction has 2236 states and 3257 transitions. [2020-12-22 09:05:04,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:05:04,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 3257 transitions. [2020-12-22 09:05:04,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-22 09:05:04,556 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:04,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:05:04,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:05:04,557 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:04,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:04,557 INFO L82 PathProgramCache]: Analyzing trace with hash 133019141, now seen corresponding path program 1 times [2020-12-22 09:05:04,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:04,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993064452] [2020-12-22 09:05:04,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:04,705 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 09:05:04,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993064452] [2020-12-22 09:05:04,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:04,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:05:04,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068501286] [2020-12-22 09:05:04,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:05:04,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:04,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:05:04,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:04,709 INFO L87 Difference]: Start difference. First operand 2236 states and 3257 transitions. Second operand 3 states. [2020-12-22 09:05:05,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:05,035 INFO L93 Difference]: Finished difference Result 6220 states and 9083 transitions. [2020-12-22 09:05:05,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:05:05,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 152 [2020-12-22 09:05:05,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:05,059 INFO L225 Difference]: With dead ends: 6220 [2020-12-22 09:05:05,059 INFO L226 Difference]: Without dead ends: 4320 [2020-12-22 09:05:05,065 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 09:05:05,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4320 states. [2020-12-22 09:05:05,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4320 to 4280. [2020-12-22 09:05:05,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4280 states. [2020-12-22 09:05:05,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4280 states to 4280 states and 6183 transitions. [2020-12-22 09:05:05,406 INFO L78 Accepts]: Start accepts. Automaton has 4280 states and 6183 transitions. Word has length 152 [2020-12-22 09:05:05,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:05,407 INFO L481 AbstractCegarLoop]: Abstraction has 4280 states and 6183 transitions. [2020-12-22 09:05:05,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:05:05,412 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states and 6183 transitions. [2020-12-22 09:05:05,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-22 09:05:05,421 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:05,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:05:05,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:05:05,429 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:05,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:05,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1469858530, now seen corresponding path program 1 times [2020-12-22 09:05:05,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:05,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248835342] [2020-12-22 09:05:05,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:05,641 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 09:05:05,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248835342] [2020-12-22 09:05:05,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:05,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:05:05,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967266849] [2020-12-22 09:05:05,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:05:05,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:05,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:05:05,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:05:05,645 INFO L87 Difference]: Start difference. First operand 4280 states and 6183 transitions. Second operand 5 states. [2020-12-22 09:05:06,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:06,303 INFO L93 Difference]: Finished difference Result 12210 states and 17610 transitions. [2020-12-22 09:05:06,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:05:06,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-12-22 09:05:06,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:06,342 INFO L225 Difference]: With dead ends: 12210 [2020-12-22 09:05:06,342 INFO L226 Difference]: Without dead ends: 7967 [2020-12-22 09:05:06,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:05:06,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7967 states. [2020-12-22 09:05:06,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7967 to 7937. [2020-12-22 09:05:06,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7937 states. [2020-12-22 09:05:06,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7937 states to 7937 states and 11329 transitions. [2020-12-22 09:05:06,933 INFO L78 Accepts]: Start accepts. Automaton has 7937 states and 11329 transitions. Word has length 152 [2020-12-22 09:05:06,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:06,933 INFO L481 AbstractCegarLoop]: Abstraction has 7937 states and 11329 transitions. [2020-12-22 09:05:06,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:05:06,933 INFO L276 IsEmpty]: Start isEmpty. Operand 7937 states and 11329 transitions. [2020-12-22 09:05:06,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-22 09:05:06,947 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:06,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:05:06,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:05:06,948 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:06,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:06,948 INFO L82 PathProgramCache]: Analyzing trace with hash -319658232, now seen corresponding path program 1 times [2020-12-22 09:05:06,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:06,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408807919] [2020-12-22 09:05:06,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:07,167 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 09:05:07,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408807919] [2020-12-22 09:05:07,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:07,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:05:07,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006155933] [2020-12-22 09:05:07,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:05:07,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:07,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:05:07,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:05:07,203 INFO L87 Difference]: Start difference. First operand 7937 states and 11329 transitions. Second operand 4 states. [2020-12-22 09:05:07,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:07,763 INFO L93 Difference]: Finished difference Result 16188 states and 23001 transitions. [2020-12-22 09:05:07,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:05:07,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-12-22 09:05:07,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:07,792 INFO L225 Difference]: With dead ends: 16188 [2020-12-22 09:05:07,792 INFO L226 Difference]: Without dead ends: 8368 [2020-12-22 09:05:07,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:05:07,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8368 states. [2020-12-22 09:05:08,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8368 to 8165. [2020-12-22 09:05:08,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8165 states. [2020-12-22 09:05:08,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8165 states to 8165 states and 11585 transitions. [2020-12-22 09:05:08,421 INFO L78 Accepts]: Start accepts. Automaton has 8165 states and 11585 transitions. Word has length 152 [2020-12-22 09:05:08,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:08,422 INFO L481 AbstractCegarLoop]: Abstraction has 8165 states and 11585 transitions. [2020-12-22 09:05:08,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:05:08,422 INFO L276 IsEmpty]: Start isEmpty. Operand 8165 states and 11585 transitions. [2020-12-22 09:05:08,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 09:05:08,436 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:08,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:05:08,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:05:08,437 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:08,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:08,437 INFO L82 PathProgramCache]: Analyzing trace with hash 242374620, now seen corresponding path program 1 times [2020-12-22 09:05:08,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:08,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145082915] [2020-12-22 09:05:08,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:08,516 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 09:05:08,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145082915] [2020-12-22 09:05:08,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:08,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:05:08,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103342946] [2020-12-22 09:05:08,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:05:08,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:08,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:05:08,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:08,519 INFO L87 Difference]: Start difference. First operand 8165 states and 11585 transitions. Second operand 3 states. [2020-12-22 09:05:09,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:09,337 INFO L93 Difference]: Finished difference Result 23761 states and 33813 transitions. [2020-12-22 09:05:09,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:05:09,338 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-12-22 09:05:09,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:09,375 INFO L225 Difference]: With dead ends: 23761 [2020-12-22 09:05:09,375 INFO L226 Difference]: Without dead ends: 16205 [2020-12-22 09:05:09,387 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 09:05:09,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16205 states. [2020-12-22 09:05:10,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16205 to 8181. [2020-12-22 09:05:10,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8181 states. [2020-12-22 09:05:10,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8181 states to 8181 states and 11601 transitions. [2020-12-22 09:05:10,039 INFO L78 Accepts]: Start accepts. Automaton has 8181 states and 11601 transitions. Word has length 153 [2020-12-22 09:05:10,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:10,040 INFO L481 AbstractCegarLoop]: Abstraction has 8181 states and 11601 transitions. [2020-12-22 09:05:10,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:05:10,040 INFO L276 IsEmpty]: Start isEmpty. Operand 8181 states and 11601 transitions. [2020-12-22 09:05:10,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-22 09:05:10,052 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:10,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:05:10,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:05:10,053 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:10,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:10,054 INFO L82 PathProgramCache]: Analyzing trace with hash -460455865, now seen corresponding path program 1 times [2020-12-22 09:05:10,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:10,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566916834] [2020-12-22 09:05:10,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:10,282 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 09:05:10,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566916834] [2020-12-22 09:05:10,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:10,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:05:10,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385178486] [2020-12-22 09:05:10,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:05:10,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:10,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:05:10,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:05:10,284 INFO L87 Difference]: Start difference. First operand 8181 states and 11601 transitions. Second operand 5 states. [2020-12-22 09:05:11,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:11,282 INFO L93 Difference]: Finished difference Result 23840 states and 33664 transitions. [2020-12-22 09:05:11,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:05:11,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-12-22 09:05:11,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:11,315 INFO L225 Difference]: With dead ends: 23840 [2020-12-22 09:05:11,316 INFO L226 Difference]: Without dead ends: 15776 [2020-12-22 09:05:11,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:05:11,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15776 states. [2020-12-22 09:05:12,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15776 to 15728. [2020-12-22 09:05:12,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15728 states. [2020-12-22 09:05:12,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15728 states to 15728 states and 21964 transitions. [2020-12-22 09:05:12,496 INFO L78 Accepts]: Start accepts. Automaton has 15728 states and 21964 transitions. Word has length 154 [2020-12-22 09:05:12,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:12,496 INFO L481 AbstractCegarLoop]: Abstraction has 15728 states and 21964 transitions. [2020-12-22 09:05:12,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:05:12,497 INFO L276 IsEmpty]: Start isEmpty. Operand 15728 states and 21964 transitions. [2020-12-22 09:05:12,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-22 09:05:12,518 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:12,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:05:12,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:05:12,519 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:12,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:12,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1197972407, now seen corresponding path program 1 times [2020-12-22 09:05:12,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:12,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726108414] [2020-12-22 09:05:12,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:12,677 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 09:05:12,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726108414] [2020-12-22 09:05:12,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:12,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:05:12,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305214439] [2020-12-22 09:05:12,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:05:12,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:12,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:05:12,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:05:12,680 INFO L87 Difference]: Start difference. First operand 15728 states and 21964 transitions. Second operand 4 states. [2020-12-22 09:05:13,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:13,326 INFO L93 Difference]: Finished difference Result 27699 states and 38659 transitions. [2020-12-22 09:05:13,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:05:13,326 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-12-22 09:05:13,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:13,350 INFO L225 Difference]: With dead ends: 27699 [2020-12-22 09:05:13,350 INFO L226 Difference]: Without dead ends: 12062 [2020-12-22 09:05:13,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:05:13,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12062 states. [2020-12-22 09:05:14,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12062 to 12062. [2020-12-22 09:05:14,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12062 states. [2020-12-22 09:05:14,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12062 states to 12062 states and 16812 transitions. [2020-12-22 09:05:14,025 INFO L78 Accepts]: Start accepts. Automaton has 12062 states and 16812 transitions. Word has length 154 [2020-12-22 09:05:14,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:14,025 INFO L481 AbstractCegarLoop]: Abstraction has 12062 states and 16812 transitions. [2020-12-22 09:05:14,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:05:14,025 INFO L276 IsEmpty]: Start isEmpty. Operand 12062 states and 16812 transitions. [2020-12-22 09:05:14,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-12-22 09:05:14,041 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:14,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:05:14,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:05:14,042 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:14,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:14,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1160989949, now seen corresponding path program 1 times [2020-12-22 09:05:14,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:14,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62374825] [2020-12-22 09:05:14,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:14,207 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 09:05:14,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62374825] [2020-12-22 09:05:14,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:14,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:05:14,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552896431] [2020-12-22 09:05:14,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:05:14,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:14,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:05:14,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:14,210 INFO L87 Difference]: Start difference. First operand 12062 states and 16812 transitions. Second operand 3 states. [2020-12-22 09:05:15,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:15,306 INFO L93 Difference]: Finished difference Result 28020 states and 39897 transitions. [2020-12-22 09:05:15,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:05:15,306 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2020-12-22 09:05:15,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:15,339 INFO L225 Difference]: With dead ends: 28020 [2020-12-22 09:05:15,339 INFO L226 Difference]: Without dead ends: 17128 [2020-12-22 09:05:15,354 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 09:05:15,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17128 states. [2020-12-22 09:05:16,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17128 to 15070. [2020-12-22 09:05:16,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15070 states. [2020-12-22 09:05:16,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15070 states to 15070 states and 21596 transitions. [2020-12-22 09:05:16,572 INFO L78 Accepts]: Start accepts. Automaton has 15070 states and 21596 transitions. Word has length 156 [2020-12-22 09:05:16,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:16,573 INFO L481 AbstractCegarLoop]: Abstraction has 15070 states and 21596 transitions. [2020-12-22 09:05:16,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:05:16,573 INFO L276 IsEmpty]: Start isEmpty. Operand 15070 states and 21596 transitions. [2020-12-22 09:05:16,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-12-22 09:05:16,590 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:16,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:05:16,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:05:16,591 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:16,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:16,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1333482030, now seen corresponding path program 1 times [2020-12-22 09:05:16,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:16,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253639894] [2020-12-22 09:05:16,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:16,696 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 09:05:16,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253639894] [2020-12-22 09:05:16,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:16,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:05:16,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247061941] [2020-12-22 09:05:16,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:05:16,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:16,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:05:16,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:16,699 INFO L87 Difference]: Start difference. First operand 15070 states and 21596 transitions. Second operand 3 states. [2020-12-22 09:05:17,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:17,960 INFO L93 Difference]: Finished difference Result 33276 states and 48789 transitions. [2020-12-22 09:05:17,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:05:17,960 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2020-12-22 09:05:17,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:17,999 INFO L225 Difference]: With dead ends: 33276 [2020-12-22 09:05:18,000 INFO L226 Difference]: Without dead ends: 22002 [2020-12-22 09:05:18,013 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 09:05:18,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22002 states. [2020-12-22 09:05:19,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22002 to 19602. [2020-12-22 09:05:19,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19602 states. [2020-12-22 09:05:19,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19602 states to 19602 states and 28780 transitions. [2020-12-22 09:05:19,256 INFO L78 Accepts]: Start accepts. Automaton has 19602 states and 28780 transitions. Word has length 158 [2020-12-22 09:05:19,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:19,256 INFO L481 AbstractCegarLoop]: Abstraction has 19602 states and 28780 transitions. [2020-12-22 09:05:19,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:05:19,257 INFO L276 IsEmpty]: Start isEmpty. Operand 19602 states and 28780 transitions. [2020-12-22 09:05:19,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-12-22 09:05:19,272 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:19,272 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:19,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:05:19,272 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:19,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:19,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1689643723, now seen corresponding path program 1 times [2020-12-22 09:05:19,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:19,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339370348] [2020-12-22 09:05:19,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:19,444 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 09:05:19,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339370348] [2020-12-22 09:05:19,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:19,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:05:19,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579143776] [2020-12-22 09:05:19,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:05:19,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:19,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:05:19,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:05:19,448 INFO L87 Difference]: Start difference. First operand 19602 states and 28780 transitions. Second operand 4 states. [2020-12-22 09:05:21,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:21,230 INFO L93 Difference]: Finished difference Result 48278 states and 70738 transitions. [2020-12-22 09:05:21,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:05:21,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2020-12-22 09:05:21,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:21,267 INFO L225 Difference]: With dead ends: 48278 [2020-12-22 09:05:21,268 INFO L226 Difference]: Without dead ends: 29021 [2020-12-22 09:05:21,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:05:21,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29021 states. [2020-12-22 09:05:23,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29021 to 28986. [2020-12-22 09:05:23,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28986 states. [2020-12-22 09:05:23,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28986 states to 28986 states and 41771 transitions. [2020-12-22 09:05:23,149 INFO L78 Accepts]: Start accepts. Automaton has 28986 states and 41771 transitions. Word has length 159 [2020-12-22 09:05:23,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:23,149 INFO L481 AbstractCegarLoop]: Abstraction has 28986 states and 41771 transitions. [2020-12-22 09:05:23,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:05:23,150 INFO L276 IsEmpty]: Start isEmpty. Operand 28986 states and 41771 transitions. [2020-12-22 09:05:23,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-12-22 09:05:23,169 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:23,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:05:23,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:05:23,170 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:23,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:23,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1882242988, now seen corresponding path program 1 times [2020-12-22 09:05:23,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:23,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365372538] [2020-12-22 09:05:23,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:23,387 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 09:05:23,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365372538] [2020-12-22 09:05:23,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:23,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:05:23,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652188004] [2020-12-22 09:05:23,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:05:23,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:23,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:05:23,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:05:23,392 INFO L87 Difference]: Start difference. First operand 28986 states and 41771 transitions. Second operand 4 states. [2020-12-22 09:05:25,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:25,012 INFO L93 Difference]: Finished difference Result 47590 states and 68731 transitions. [2020-12-22 09:05:25,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:05:25,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-12-22 09:05:25,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:25,044 INFO L225 Difference]: With dead ends: 47590 [2020-12-22 09:05:25,044 INFO L226 Difference]: Without dead ends: 25825 [2020-12-22 09:05:25,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:05:25,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25825 states. [2020-12-22 09:05:26,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25825 to 25825. [2020-12-22 09:05:26,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25825 states. [2020-12-22 09:05:26,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25825 states to 25825 states and 37250 transitions. [2020-12-22 09:05:26,621 INFO L78 Accepts]: Start accepts. Automaton has 25825 states and 37250 transitions. Word has length 161 [2020-12-22 09:05:26,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:26,621 INFO L481 AbstractCegarLoop]: Abstraction has 25825 states and 37250 transitions. [2020-12-22 09:05:26,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:05:26,621 INFO L276 IsEmpty]: Start isEmpty. Operand 25825 states and 37250 transitions. [2020-12-22 09:05:26,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-12-22 09:05:26,630 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:26,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:05:26,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 09:05:26,631 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:26,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:26,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1929948177, now seen corresponding path program 1 times [2020-12-22 09:05:26,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:26,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471194587] [2020-12-22 09:05:26,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:26,712 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 09:05:26,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471194587] [2020-12-22 09:05:26,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:26,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:05:26,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043409532] [2020-12-22 09:05:26,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:05:26,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:26,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:05:26,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:26,715 INFO L87 Difference]: Start difference. First operand 25825 states and 37250 transitions. Second operand 3 states. [2020-12-22 09:05:28,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:28,743 INFO L93 Difference]: Finished difference Result 58307 states and 85606 transitions. [2020-12-22 09:05:28,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:05:28,743 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2020-12-22 09:05:28,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:28,791 INFO L225 Difference]: With dead ends: 58307 [2020-12-22 09:05:28,791 INFO L226 Difference]: Without dead ends: 38523 [2020-12-22 09:05:28,814 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 09:05:28,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38523 states. [2020-12-22 09:05:31,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38523 to 35491. [2020-12-22 09:05:31,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35491 states. [2020-12-22 09:05:31,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35491 states to 35491 states and 52324 transitions. [2020-12-22 09:05:31,492 INFO L78 Accepts]: Start accepts. Automaton has 35491 states and 52324 transitions. Word has length 165 [2020-12-22 09:05:31,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:31,492 INFO L481 AbstractCegarLoop]: Abstraction has 35491 states and 52324 transitions. [2020-12-22 09:05:31,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:05:31,492 INFO L276 IsEmpty]: Start isEmpty. Operand 35491 states and 52324 transitions. [2020-12-22 09:05:31,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-12-22 09:05:31,502 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:31,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:05:31,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 09:05:31,503 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:31,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:31,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1389081673, now seen corresponding path program 1 times [2020-12-22 09:05:31,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:31,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056466113] [2020-12-22 09:05:31,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:31,831 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 09:05:31,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056466113] [2020-12-22 09:05:31,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:31,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 09:05:31,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101806838] [2020-12-22 09:05:31,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 09:05:31,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:31,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 09:05:31,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-22 09:05:31,834 INFO L87 Difference]: Start difference. First operand 35491 states and 52324 transitions. Second operand 10 states. [2020-12-22 09:05:41,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:41,554 INFO L93 Difference]: Finished difference Result 150821 states and 227152 transitions. [2020-12-22 09:05:41,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 09:05:41,555 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2020-12-22 09:05:41,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:41,877 INFO L225 Difference]: With dead ends: 150821 [2020-12-22 09:05:41,877 INFO L226 Difference]: Without dead ends: 119744 [2020-12-22 09:05:41,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2020-12-22 09:05:42,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119744 states. [2020-12-22 09:05:48,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119744 to 74709. [2020-12-22 09:05:48,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74709 states. [2020-12-22 09:05:48,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74709 states to 74709 states and 111526 transitions. [2020-12-22 09:05:48,381 INFO L78 Accepts]: Start accepts. Automaton has 74709 states and 111526 transitions. Word has length 166 [2020-12-22 09:05:48,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:48,381 INFO L481 AbstractCegarLoop]: Abstraction has 74709 states and 111526 transitions. [2020-12-22 09:05:48,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 09:05:48,381 INFO L276 IsEmpty]: Start isEmpty. Operand 74709 states and 111526 transitions. [2020-12-22 09:05:48,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-12-22 09:05:48,393 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:48,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:05:48,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 09:05:48,394 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:48,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:48,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1890721178, now seen corresponding path program 1 times [2020-12-22 09:05:48,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:48,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008261945] [2020-12-22 09:05:48,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:48,568 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 09:05:48,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008261945] [2020-12-22 09:05:48,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:48,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:05:48,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137129681] [2020-12-22 09:05:48,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:05:48,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:48,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:05:48,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:05:48,571 INFO L87 Difference]: Start difference. First operand 74709 states and 111526 transitions. Second operand 4 states. [2020-12-22 09:05:53,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:53,279 INFO L93 Difference]: Finished difference Result 128863 states and 192382 transitions. [2020-12-22 09:05:53,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:05:53,281 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-12-22 09:05:53,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:53,351 INFO L225 Difference]: With dead ends: 128863 [2020-12-22 09:05:53,351 INFO L226 Difference]: Without dead ends: 54562 [2020-12-22 09:05:53,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:05:53,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54562 states. [2020-12-22 09:05:57,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54562 to 54562. [2020-12-22 09:05:57,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54562 states. [2020-12-22 09:05:57,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54562 states to 54562 states and 81304 transitions. [2020-12-22 09:05:57,944 INFO L78 Accepts]: Start accepts. Automaton has 54562 states and 81304 transitions. Word has length 166 [2020-12-22 09:05:57,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:57,944 INFO L481 AbstractCegarLoop]: Abstraction has 54562 states and 81304 transitions. [2020-12-22 09:05:57,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:05:57,945 INFO L276 IsEmpty]: Start isEmpty. Operand 54562 states and 81304 transitions. [2020-12-22 09:05:57,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-12-22 09:05:57,955 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:57,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:05:57,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 09:05:57,956 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:57,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:57,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1667255443, now seen corresponding path program 1 times [2020-12-22 09:05:57,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:57,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877830306] [2020-12-22 09:05:57,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:58,189 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 09:05:58,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877830306] [2020-12-22 09:05:58,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:58,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 09:05:58,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591257240] [2020-12-22 09:05:58,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 09:05:58,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:58,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 09:05:58,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:05:58,192 INFO L87 Difference]: Start difference. First operand 54562 states and 81304 transitions. Second operand 9 states. [2020-12-22 09:06:18,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:18,327 INFO L93 Difference]: Finished difference Result 285525 states and 425485 transitions. [2020-12-22 09:06:18,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 09:06:18,328 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 173 [2020-12-22 09:06:18,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:18,949 INFO L225 Difference]: With dead ends: 285525 [2020-12-22 09:06:18,949 INFO L226 Difference]: Without dead ends: 231897 [2020-12-22 09:06:19,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2020-12-22 09:06:19,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231897 states. [2020-12-22 09:06:31,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231897 to 134538. [2020-12-22 09:06:31,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134538 states. [2020-12-22 09:06:31,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134538 states to 134538 states and 200574 transitions. [2020-12-22 09:06:31,612 INFO L78 Accepts]: Start accepts. Automaton has 134538 states and 200574 transitions. Word has length 173 [2020-12-22 09:06:31,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:31,613 INFO L481 AbstractCegarLoop]: Abstraction has 134538 states and 200574 transitions. [2020-12-22 09:06:31,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 09:06:31,613 INFO L276 IsEmpty]: Start isEmpty. Operand 134538 states and 200574 transitions. [2020-12-22 09:06:31,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-12-22 09:06:31,635 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:31,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:06:31,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 09:06:31,636 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:31,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:31,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1679661606, now seen corresponding path program 1 times [2020-12-22 09:06:31,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:31,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993609396] [2020-12-22 09:06:31,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:32,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:06:32,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993609396] [2020-12-22 09:06:32,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:32,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:06:32,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974129248] [2020-12-22 09:06:32,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:06:32,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:32,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:06:32,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:06:32,104 INFO L87 Difference]: Start difference. First operand 134538 states and 200574 transitions. Second operand 4 states. [2020-12-22 09:06:46,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:46,510 INFO L93 Difference]: Finished difference Result 277259 states and 419422 transitions. [2020-12-22 09:06:46,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:06:46,511 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2020-12-22 09:06:46,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:46,810 INFO L225 Difference]: With dead ends: 277259 [2020-12-22 09:06:46,810 INFO L226 Difference]: Without dead ends: 163987 [2020-12-22 09:06:47,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:06:47,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163987 states.