/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:19:46,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:19:46,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:19:46,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:19:46,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:19:46,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:19:46,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:19:46,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:19:46,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:19:46,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:19:46,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:19:46,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:19:46,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:19:46,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:19:46,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:19:46,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:19:46,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:19:46,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:19:46,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:19:46,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:19:46,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:19:46,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:19:46,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:19:46,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:19:46,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:19:46,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:19:46,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:19:46,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:19:46,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:19:46,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:19:46,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:19:46,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:19:46,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:19:46,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:19:46,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:19:46,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:19:46,290 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:19:46,343 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:19:46,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:19:46,348 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:19:46,348 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:19:46,348 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:19:46,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:19:46,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:19:46,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:19:46,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:19:46,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:19:46,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:19:46,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:19:46,351 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:19:46,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:19:46,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:19:46,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:19:46,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:19:46,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:19:46,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:19:46,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:19:46,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:19:46,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:19:46,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:19:46,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:19:46,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:19:46,354 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:19:46,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:19:46,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:19:46,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:19:46,779 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:19:46,779 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:19:46,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-12-22 08:19:46,860 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/343a2a45e/137c3c74a5fc4afb87cde518ced3d0d5/FLAG25753fc1c [2020-12-22 08:19:47,775 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:19:47,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-12-22 08:19:47,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/343a2a45e/137c3c74a5fc4afb87cde518ced3d0d5/FLAG25753fc1c [2020-12-22 08:19:48,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/343a2a45e/137c3c74a5fc4afb87cde518ced3d0d5 [2020-12-22 08:19:48,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:19:48,339 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:19:48,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:19:48,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:19:48,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:19:48,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:19:48" (1/1) ... [2020-12-22 08:19:48,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26688ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:19:48, skipping insertion in model container [2020-12-22 08:19:48,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:19:48" (1/1) ... [2020-12-22 08:19:48,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:19:48,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:19:48,900 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[8020,8033] [2020-12-22 08:19:48,943 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12547,12560] [2020-12-22 08:19:49,027 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[20297,20310] [2020-12-22 08:19:49,063 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[27388,27401] [2020-12-22 08:19:49,181 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[48612,48625] [2020-12-22 08:19:49,276 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[79703,79716] [2020-12-22 08:19:49,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:19:49,581 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:19:49,655 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[8020,8033] [2020-12-22 08:19:49,691 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12547,12560] [2020-12-22 08:19:49,770 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[20297,20310] [2020-12-22 08:19:49,801 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[27388,27401] [2020-12-22 08:19:49,852 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[48612,48625] [2020-12-22 08:19:49,928 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[79703,79716] [2020-12-22 08:19:50,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:19:50,109 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:19:50,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:19:50 WrapperNode [2020-12-22 08:19:50,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:19:50,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:19:50,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:19:50,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:19:50,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:19:50" (1/1) ... [2020-12-22 08:19:50,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:19:50" (1/1) ... [2020-12-22 08:19:50,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:19:50,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:19:50,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:19:50,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:19:50,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:19:50" (1/1) ... [2020-12-22 08:19:50,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:19:50" (1/1) ... [2020-12-22 08:19:50,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:19:50" (1/1) ... [2020-12-22 08:19:50,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:19:50" (1/1) ... [2020-12-22 08:19:50,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:19:50" (1/1) ... [2020-12-22 08:19:50,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:19:50" (1/1) ... [2020-12-22 08:19:50,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:19:50" (1/1) ... [2020-12-22 08:19:50,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:19:50,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:19:50,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:19:50,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:19:50,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:19:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:19:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:19:50,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:19:50,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:19:50,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:19:54,656 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:19:54,656 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:19:54,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:19:54 BoogieIcfgContainer [2020-12-22 08:19:54,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:19:54,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:19:54,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:19:54,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:19:54,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:19:48" (1/3) ... [2020-12-22 08:19:54,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc92043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:19:54, skipping insertion in model container [2020-12-22 08:19:54,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:19:50" (2/3) ... [2020-12-22 08:19:54,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc92043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:19:54, skipping insertion in model container [2020-12-22 08:19:54,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:19:54" (3/3) ... [2020-12-22 08:19:54,668 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-12-22 08:19:54,675 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:19:54,682 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 08:19:54,701 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 08:19:54,737 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:19:54,738 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:19:54,738 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:19:54,738 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:19:54,738 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:19:54,738 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:19:54,738 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:19:54,739 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:19:54,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states. [2020-12-22 08:19:54,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 08:19:54,799 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:54,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:19:54,801 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:19:54,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:54,808 INFO L82 PathProgramCache]: Analyzing trace with hash 692081489, now seen corresponding path program 1 times [2020-12-22 08:19:54,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:54,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499091771] [2020-12-22 08:19:54,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:55,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:19:55,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499091771] [2020-12-22 08:19:55,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:55,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:19:55,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67403240] [2020-12-22 08:19:55,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:19:55,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:55,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:19:55,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:19:55,372 INFO L87 Difference]: Start difference. First operand 1290 states. Second operand 5 states. [2020-12-22 08:19:57,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:57,454 INFO L93 Difference]: Finished difference Result 2514 states and 4326 transitions. [2020-12-22 08:19:57,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:19:57,457 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-12-22 08:19:57,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:57,492 INFO L225 Difference]: With dead ends: 2514 [2020-12-22 08:19:57,492 INFO L226 Difference]: Without dead ends: 1590 [2020-12-22 08:19:57,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:19:57,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2020-12-22 08:19:57,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1584. [2020-12-22 08:19:57,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-12-22 08:19:57,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2066 transitions. [2020-12-22 08:19:57,727 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2066 transitions. Word has length 52 [2020-12-22 08:19:57,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:19:57,728 INFO L481 AbstractCegarLoop]: Abstraction has 1584 states and 2066 transitions. [2020-12-22 08:19:57,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:19:57,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2066 transitions. [2020-12-22 08:19:57,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:19:57,734 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:57,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:19:57,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:19:57,735 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:19:57,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:57,737 INFO L82 PathProgramCache]: Analyzing trace with hash -736362272, now seen corresponding path program 1 times [2020-12-22 08:19:57,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:57,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359796959] [2020-12-22 08:19:57,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:57,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:19:57,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359796959] [2020-12-22 08:19:57,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:57,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:19:57,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851644892] [2020-12-22 08:19:57,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:19:57,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:57,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:19:57,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:19:57,992 INFO L87 Difference]: Start difference. First operand 1584 states and 2066 transitions. Second operand 6 states. [2020-12-22 08:19:59,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:59,468 INFO L93 Difference]: Finished difference Result 3589 states and 4731 transitions. [2020-12-22 08:19:59,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:19:59,468 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-12-22 08:19:59,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:59,483 INFO L225 Difference]: With dead ends: 3589 [2020-12-22 08:19:59,483 INFO L226 Difference]: Without dead ends: 2599 [2020-12-22 08:19:59,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:19:59,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2599 states. [2020-12-22 08:19:59,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2599 to 2576. [2020-12-22 08:19:59,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2576 states. [2020-12-22 08:19:59,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2576 states to 2576 states and 3410 transitions. [2020-12-22 08:19:59,627 INFO L78 Accepts]: Start accepts. Automaton has 2576 states and 3410 transitions. Word has length 53 [2020-12-22 08:19:59,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:19:59,628 INFO L481 AbstractCegarLoop]: Abstraction has 2576 states and 3410 transitions. [2020-12-22 08:19:59,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:19:59,629 INFO L276 IsEmpty]: Start isEmpty. Operand 2576 states and 3410 transitions. [2020-12-22 08:19:59,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:19:59,636 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:59,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:19:59,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:19:59,637 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:19:59,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:59,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1386389066, now seen corresponding path program 1 times [2020-12-22 08:19:59,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:59,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953229773] [2020-12-22 08:19:59,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:59,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:19:59,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953229773] [2020-12-22 08:19:59,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:59,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:19:59,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918994746] [2020-12-22 08:19:59,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:19:59,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:59,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:19:59,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:19:59,815 INFO L87 Difference]: Start difference. First operand 2576 states and 3410 transitions. Second operand 6 states. [2020-12-22 08:20:01,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:01,279 INFO L93 Difference]: Finished difference Result 6098 states and 8177 transitions. [2020-12-22 08:20:01,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:20:01,280 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-12-22 08:20:01,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:01,312 INFO L225 Difference]: With dead ends: 6098 [2020-12-22 08:20:01,313 INFO L226 Difference]: Without dead ends: 4450 [2020-12-22 08:20:01,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:20:01,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4450 states. [2020-12-22 08:20:01,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4450 to 4434. [2020-12-22 08:20:01,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4434 states. [2020-12-22 08:20:01,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 5917 transitions. [2020-12-22 08:20:01,559 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 5917 transitions. Word has length 53 [2020-12-22 08:20:01,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:01,560 INFO L481 AbstractCegarLoop]: Abstraction has 4434 states and 5917 transitions. [2020-12-22 08:20:01,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:20:01,560 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 5917 transitions. [2020-12-22 08:20:01,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:20:01,564 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:01,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:20:01,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:20:01,565 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:01,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:01,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1763239895, now seen corresponding path program 1 times [2020-12-22 08:20:01,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:01,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351041589] [2020-12-22 08:20:01,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:01,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:20:01,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351041589] [2020-12-22 08:20:01,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:01,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:20:01,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244564342] [2020-12-22 08:20:01,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:20:01,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:01,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:20:01,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:20:01,805 INFO L87 Difference]: Start difference. First operand 4434 states and 5917 transitions. Second operand 8 states. [2020-12-22 08:20:04,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:04,581 INFO L93 Difference]: Finished difference Result 9642 states and 13817 transitions. [2020-12-22 08:20:04,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 08:20:04,582 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-12-22 08:20:04,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:04,623 INFO L225 Difference]: With dead ends: 9642 [2020-12-22 08:20:04,624 INFO L226 Difference]: Without dead ends: 8249 [2020-12-22 08:20:04,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:20:04,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8249 states. [2020-12-22 08:20:04,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8249 to 4434. [2020-12-22 08:20:04,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4434 states. [2020-12-22 08:20:04,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 5916 transitions. [2020-12-22 08:20:04,948 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 5916 transitions. Word has length 55 [2020-12-22 08:20:04,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:04,948 INFO L481 AbstractCegarLoop]: Abstraction has 4434 states and 5916 transitions. [2020-12-22 08:20:04,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:20:04,949 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 5916 transitions. [2020-12-22 08:20:04,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:20:04,952 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:04,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:20:04,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:20:04,953 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:04,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:04,953 INFO L82 PathProgramCache]: Analyzing trace with hash 622296368, now seen corresponding path program 1 times [2020-12-22 08:20:04,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:04,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869374509] [2020-12-22 08:20:04,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:05,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:20:05,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869374509] [2020-12-22 08:20:05,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:05,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:20:05,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847745011] [2020-12-22 08:20:05,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:20:05,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:05,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:20:05,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:20:05,188 INFO L87 Difference]: Start difference. First operand 4434 states and 5916 transitions. Second operand 9 states. [2020-12-22 08:20:09,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:09,380 INFO L93 Difference]: Finished difference Result 12600 states and 17778 transitions. [2020-12-22 08:20:09,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:20:09,380 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-12-22 08:20:09,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:09,453 INFO L225 Difference]: With dead ends: 12600 [2020-12-22 08:20:09,453 INFO L226 Difference]: Without dead ends: 11457 [2020-12-22 08:20:09,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:20:09,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11457 states. [2020-12-22 08:20:09,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11457 to 4434. [2020-12-22 08:20:09,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4434 states. [2020-12-22 08:20:09,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 5915 transitions. [2020-12-22 08:20:09,878 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 5915 transitions. Word has length 55 [2020-12-22 08:20:09,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:09,881 INFO L481 AbstractCegarLoop]: Abstraction has 4434 states and 5915 transitions. [2020-12-22 08:20:09,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:20:09,881 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 5915 transitions. [2020-12-22 08:20:09,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:20:09,884 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:09,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:20:09,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:20:09,885 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:09,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:09,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1268497001, now seen corresponding path program 1 times [2020-12-22 08:20:09,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:09,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334940817] [2020-12-22 08:20:09,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:10,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:20:10,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334940817] [2020-12-22 08:20:10,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:10,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:20:10,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392518354] [2020-12-22 08:20:10,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:20:10,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:10,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:20:10,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:20:10,204 INFO L87 Difference]: Start difference. First operand 4434 states and 5915 transitions. Second operand 9 states. [2020-12-22 08:20:14,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:14,245 INFO L93 Difference]: Finished difference Result 8488 states and 12028 transitions. [2020-12-22 08:20:14,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:20:14,245 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-12-22 08:20:14,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:14,262 INFO L225 Difference]: With dead ends: 8488 [2020-12-22 08:20:14,262 INFO L226 Difference]: Without dead ends: 8482 [2020-12-22 08:20:14,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2020-12-22 08:20:14,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8482 states. [2020-12-22 08:20:14,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8482 to 4434. [2020-12-22 08:20:14,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4434 states. [2020-12-22 08:20:14,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 5914 transitions. [2020-12-22 08:20:14,597 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 5914 transitions. Word has length 55 [2020-12-22 08:20:14,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:14,598 INFO L481 AbstractCegarLoop]: Abstraction has 4434 states and 5914 transitions. [2020-12-22 08:20:14,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:20:14,598 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 5914 transitions. [2020-12-22 08:20:14,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:20:14,602 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:14,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:20:14,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:20:14,603 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:14,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:14,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1662572980, now seen corresponding path program 1 times [2020-12-22 08:20:14,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:14,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61004229] [2020-12-22 08:20:14,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:14,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:20:14,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61004229] [2020-12-22 08:20:14,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:14,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:20:14,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351120166] [2020-12-22 08:20:14,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:20:14,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:14,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:20:14,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:20:14,673 INFO L87 Difference]: Start difference. First operand 4434 states and 5914 transitions. Second operand 3 states. [2020-12-22 08:20:15,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:15,220 INFO L93 Difference]: Finished difference Result 6436 states and 8961 transitions. [2020-12-22 08:20:15,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:20:15,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 08:20:15,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:15,232 INFO L225 Difference]: With dead ends: 6436 [2020-12-22 08:20:15,232 INFO L226 Difference]: Without dead ends: 4862 [2020-12-22 08:20:15,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:20:15,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4862 states. [2020-12-22 08:20:15,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4862 to 4522. [2020-12-22 08:20:15,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4522 states. [2020-12-22 08:20:15,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4522 states to 4522 states and 6098 transitions. [2020-12-22 08:20:15,579 INFO L78 Accepts]: Start accepts. Automaton has 4522 states and 6098 transitions. Word has length 56 [2020-12-22 08:20:15,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:15,580 INFO L481 AbstractCegarLoop]: Abstraction has 4522 states and 6098 transitions. [2020-12-22 08:20:15,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:20:15,580 INFO L276 IsEmpty]: Start isEmpty. Operand 4522 states and 6098 transitions. [2020-12-22 08:20:15,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:20:15,583 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:15,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:20:15,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:20:15,584 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:15,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:15,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1775531576, now seen corresponding path program 1 times [2020-12-22 08:20:15,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:15,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913039719] [2020-12-22 08:20:15,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:20:15,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913039719] [2020-12-22 08:20:15,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:15,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:20:15,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663881469] [2020-12-22 08:20:15,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:20:15,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:15,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:20:15,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:20:15,647 INFO L87 Difference]: Start difference. First operand 4522 states and 6098 transitions. Second operand 3 states. [2020-12-22 08:20:16,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:16,131 INFO L93 Difference]: Finished difference Result 7492 states and 10597 transitions. [2020-12-22 08:20:16,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:20:16,131 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 08:20:16,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:16,144 INFO L225 Difference]: With dead ends: 7492 [2020-12-22 08:20:16,144 INFO L226 Difference]: Without dead ends: 5496 [2020-12-22 08:20:16,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:20:16,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5496 states. [2020-12-22 08:20:16,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5496 to 4984. [2020-12-22 08:20:16,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4984 states. [2020-12-22 08:20:16,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4984 states to 4984 states and 6831 transitions. [2020-12-22 08:20:16,615 INFO L78 Accepts]: Start accepts. Automaton has 4984 states and 6831 transitions. Word has length 56 [2020-12-22 08:20:16,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:16,615 INFO L481 AbstractCegarLoop]: Abstraction has 4984 states and 6831 transitions. [2020-12-22 08:20:16,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:20:16,615 INFO L276 IsEmpty]: Start isEmpty. Operand 4984 states and 6831 transitions. [2020-12-22 08:20:16,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:20:16,619 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:16,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:20:16,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:20:16,619 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:16,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:16,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1498951000, now seen corresponding path program 1 times [2020-12-22 08:20:16,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:16,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871383709] [2020-12-22 08:20:16,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:16,677 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 08:20:16,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871383709] [2020-12-22 08:20:16,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:16,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:20:16,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339303496] [2020-12-22 08:20:16,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:20:16,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:16,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:20:16,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:20:16,680 INFO L87 Difference]: Start difference. First operand 4984 states and 6831 transitions. Second operand 3 states. [2020-12-22 08:20:17,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:17,357 INFO L93 Difference]: Finished difference Result 10705 states and 15011 transitions. [2020-12-22 08:20:17,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:20:17,357 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 08:20:17,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:17,371 INFO L225 Difference]: With dead ends: 10705 [2020-12-22 08:20:17,371 INFO L226 Difference]: Without dead ends: 7153 [2020-12-22 08:20:17,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:20:17,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7153 states. [2020-12-22 08:20:18,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7153 to 7147. [2020-12-22 08:20:18,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7147 states. [2020-12-22 08:20:18,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7147 states to 7147 states and 9769 transitions. [2020-12-22 08:20:18,045 INFO L78 Accepts]: Start accepts. Automaton has 7147 states and 9769 transitions. Word has length 56 [2020-12-22 08:20:18,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:18,046 INFO L481 AbstractCegarLoop]: Abstraction has 7147 states and 9769 transitions. [2020-12-22 08:20:18,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:20:18,046 INFO L276 IsEmpty]: Start isEmpty. Operand 7147 states and 9769 transitions. [2020-12-22 08:20:18,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:20:18,051 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:18,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:20:18,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:20:18,051 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:18,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:18,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1118792296, now seen corresponding path program 1 times [2020-12-22 08:20:18,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:18,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844177627] [2020-12-22 08:20:18,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:18,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:20:18,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844177627] [2020-12-22 08:20:18,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:18,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 08:20:18,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976087119] [2020-12-22 08:20:18,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 08:20:18,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:18,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 08:20:18,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:20:18,425 INFO L87 Difference]: Start difference. First operand 7147 states and 9769 transitions. Second operand 12 states. [2020-12-22 08:20:22,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:22,992 INFO L93 Difference]: Finished difference Result 14979 states and 20744 transitions. [2020-12-22 08:20:22,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 08:20:22,993 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-12-22 08:20:22,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:23,013 INFO L225 Difference]: With dead ends: 14979 [2020-12-22 08:20:23,014 INFO L226 Difference]: Without dead ends: 14776 [2020-12-22 08:20:23,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:20:23,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14776 states. [2020-12-22 08:20:23,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14776 to 7134. [2020-12-22 08:20:23,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7134 states. [2020-12-22 08:20:23,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7134 states to 7134 states and 9754 transitions. [2020-12-22 08:20:23,914 INFO L78 Accepts]: Start accepts. Automaton has 7134 states and 9754 transitions. Word has length 57 [2020-12-22 08:20:23,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:23,914 INFO L481 AbstractCegarLoop]: Abstraction has 7134 states and 9754 transitions. [2020-12-22 08:20:23,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 08:20:23,915 INFO L276 IsEmpty]: Start isEmpty. Operand 7134 states and 9754 transitions. [2020-12-22 08:20:23,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:20:23,917 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:23,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:20:23,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:20:23,918 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:23,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:23,918 INFO L82 PathProgramCache]: Analyzing trace with hash -677466950, now seen corresponding path program 1 times [2020-12-22 08:20:23,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:23,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527880406] [2020-12-22 08:20:23,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:23,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:23,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:20:23,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527880406] [2020-12-22 08:20:23,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:23,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:20:23,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715556277] [2020-12-22 08:20:23,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:20:23,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:23,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:20:23,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:20:23,970 INFO L87 Difference]: Start difference. First operand 7134 states and 9754 transitions. Second operand 3 states. [2020-12-22 08:20:25,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:25,172 INFO L93 Difference]: Finished difference Result 15389 states and 21731 transitions. [2020-12-22 08:20:25,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:20:25,176 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-12-22 08:20:25,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:25,187 INFO L225 Difference]: With dead ends: 15389 [2020-12-22 08:20:25,188 INFO L226 Difference]: Without dead ends: 9786 [2020-12-22 08:20:25,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:20:25,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9786 states. [2020-12-22 08:20:26,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9786 to 7944. [2020-12-22 08:20:26,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7944 states. [2020-12-22 08:20:26,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7944 states to 7944 states and 11114 transitions. [2020-12-22 08:20:26,087 INFO L78 Accepts]: Start accepts. Automaton has 7944 states and 11114 transitions. Word has length 57 [2020-12-22 08:20:26,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:26,087 INFO L481 AbstractCegarLoop]: Abstraction has 7944 states and 11114 transitions. [2020-12-22 08:20:26,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:20:26,087 INFO L276 IsEmpty]: Start isEmpty. Operand 7944 states and 11114 transitions. [2020-12-22 08:20:26,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:20:26,090 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:26,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:20:26,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:20:26,090 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:26,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:26,091 INFO L82 PathProgramCache]: Analyzing trace with hash -611117000, now seen corresponding path program 1 times [2020-12-22 08:20:26,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:26,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587017668] [2020-12-22 08:20:26,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:26,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:20:26,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587017668] [2020-12-22 08:20:26,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:26,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:20:26,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011309408] [2020-12-22 08:20:26,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:20:26,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:26,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:20:26,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:20:26,135 INFO L87 Difference]: Start difference. First operand 7944 states and 11114 transitions. Second operand 3 states. [2020-12-22 08:20:28,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:28,103 INFO L93 Difference]: Finished difference Result 18730 states and 26895 transitions. [2020-12-22 08:20:28,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:20:28,103 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-12-22 08:20:28,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:28,113 INFO L225 Difference]: With dead ends: 18730 [2020-12-22 08:20:28,113 INFO L226 Difference]: Without dead ends: 11936 [2020-12-22 08:20:28,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:20:28,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11936 states. [2020-12-22 08:20:29,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11936 to 9418. [2020-12-22 08:20:29,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9418 states. [2020-12-22 08:20:29,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9418 states to 9418 states and 13429 transitions. [2020-12-22 08:20:29,241 INFO L78 Accepts]: Start accepts. Automaton has 9418 states and 13429 transitions. Word has length 57 [2020-12-22 08:20:29,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:29,241 INFO L481 AbstractCegarLoop]: Abstraction has 9418 states and 13429 transitions. [2020-12-22 08:20:29,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:20:29,242 INFO L276 IsEmpty]: Start isEmpty. Operand 9418 states and 13429 transitions. [2020-12-22 08:20:29,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:20:29,245 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:29,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:20:29,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:20:29,245 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:29,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:29,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1274837938, now seen corresponding path program 1 times [2020-12-22 08:20:29,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:29,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623843763] [2020-12-22 08:20:29,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:20:29,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623843763] [2020-12-22 08:20:29,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:29,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:20:29,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958885475] [2020-12-22 08:20:29,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:20:29,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:29,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:20:29,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:20:29,329 INFO L87 Difference]: Start difference. First operand 9418 states and 13429 transitions. Second operand 3 states. [2020-12-22 08:20:31,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:31,223 INFO L93 Difference]: Finished difference Result 19884 states and 28586 transitions. [2020-12-22 08:20:31,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:20:31,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-12-22 08:20:31,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:31,235 INFO L225 Difference]: With dead ends: 19884 [2020-12-22 08:20:31,236 INFO L226 Difference]: Without dead ends: 10888 [2020-12-22 08:20:31,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:20:31,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10888 states. [2020-12-22 08:20:32,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10888 to 8653. [2020-12-22 08:20:32,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8653 states. [2020-12-22 08:20:32,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8653 states to 8653 states and 12428 transitions. [2020-12-22 08:20:32,264 INFO L78 Accepts]: Start accepts. Automaton has 8653 states and 12428 transitions. Word has length 57 [2020-12-22 08:20:32,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:32,265 INFO L481 AbstractCegarLoop]: Abstraction has 8653 states and 12428 transitions. [2020-12-22 08:20:32,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:20:32,265 INFO L276 IsEmpty]: Start isEmpty. Operand 8653 states and 12428 transitions. [2020-12-22 08:20:32,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 08:20:32,267 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:32,267 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] [2020-12-22 08:20:32,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:20:32,268 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:32,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:32,268 INFO L82 PathProgramCache]: Analyzing trace with hash -410378211, now seen corresponding path program 1 times [2020-12-22 08:20:32,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:32,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439352285] [2020-12-22 08:20:32,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:33,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:20:33,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439352285] [2020-12-22 08:20:33,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:33,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:20:33,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121621763] [2020-12-22 08:20:33,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:20:33,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:33,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:20:33,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:20:33,025 INFO L87 Difference]: Start difference. First operand 8653 states and 12428 transitions. Second operand 19 states. [2020-12-22 08:20:33,234 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-22 08:20:34,303 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-12-22 08:20:34,602 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 08:20:34,787 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 08:20:35,028 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-12-22 08:20:35,751 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-12-22 08:20:45,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:45,351 INFO L93 Difference]: Finished difference Result 30708 states and 44745 transitions. [2020-12-22 08:20:45,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 08:20:45,351 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2020-12-22 08:20:45,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:45,384 INFO L225 Difference]: With dead ends: 30708 [2020-12-22 08:20:45,384 INFO L226 Difference]: Without dead ends: 30704 [2020-12-22 08:20:45,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=302, Invalid=1338, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 08:20:45,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30704 states. [2020-12-22 08:20:46,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30704 to 8666. [2020-12-22 08:20:46,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8666 states. [2020-12-22 08:20:46,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8666 states to 8666 states and 12446 transitions. [2020-12-22 08:20:46,932 INFO L78 Accepts]: Start accepts. Automaton has 8666 states and 12446 transitions. Word has length 58 [2020-12-22 08:20:46,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:46,933 INFO L481 AbstractCegarLoop]: Abstraction has 8666 states and 12446 transitions. [2020-12-22 08:20:46,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:20:46,933 INFO L276 IsEmpty]: Start isEmpty. Operand 8666 states and 12446 transitions. [2020-12-22 08:20:46,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 08:20:46,934 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:46,935 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] [2020-12-22 08:20:46,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:20:46,935 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:46,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:46,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1645651769, now seen corresponding path program 1 times [2020-12-22 08:20:46,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:46,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178358414] [2020-12-22 08:20:46,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:47,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:20:47,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178358414] [2020-12-22 08:20:47,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:47,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:20:47,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70845699] [2020-12-22 08:20:47,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:20:47,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:47,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:20:47,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:20:47,647 INFO L87 Difference]: Start difference. First operand 8666 states and 12446 transitions. Second operand 19 states. [2020-12-22 08:20:47,862 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-12-22 08:20:48,632 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-22 08:20:49,433 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-12-22 08:20:58,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:58,063 INFO L93 Difference]: Finished difference Result 23339 states and 33928 transitions. [2020-12-22 08:20:58,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 08:20:58,064 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2020-12-22 08:20:58,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:58,085 INFO L225 Difference]: With dead ends: 23339 [2020-12-22 08:20:58,085 INFO L226 Difference]: Without dead ends: 23335 [2020-12-22 08:20:58,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=273, Invalid=987, Unknown=0, NotChecked=0, Total=1260 [2020-12-22 08:20:58,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23335 states. [2020-12-22 08:20:59,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23335 to 8666. [2020-12-22 08:20:59,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8666 states. [2020-12-22 08:20:59,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8666 states to 8666 states and 12445 transitions. [2020-12-22 08:20:59,528 INFO L78 Accepts]: Start accepts. Automaton has 8666 states and 12445 transitions. Word has length 58 [2020-12-22 08:20:59,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:59,529 INFO L481 AbstractCegarLoop]: Abstraction has 8666 states and 12445 transitions. [2020-12-22 08:20:59,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:20:59,529 INFO L276 IsEmpty]: Start isEmpty. Operand 8666 states and 12445 transitions. [2020-12-22 08:20:59,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 08:20:59,530 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:59,530 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] [2020-12-22 08:20:59,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:20:59,531 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:59,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:59,531 INFO L82 PathProgramCache]: Analyzing trace with hash 3906094, now seen corresponding path program 1 times [2020-12-22 08:20:59,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:59,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456694894] [2020-12-22 08:20:59,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:00,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:00,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456694894] [2020-12-22 08:21:00,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:00,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-12-22 08:21:00,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844568203] [2020-12-22 08:21:00,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 08:21:00,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:00,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 08:21:00,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:21:00,060 INFO L87 Difference]: Start difference. First operand 8666 states and 12445 transitions. Second operand 16 states. [2020-12-22 08:21:00,848 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-12-22 08:21:01,033 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-12-22 08:21:01,365 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-12-22 08:21:01,787 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-12-22 08:21:02,169 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:21:09,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:09,424 INFO L93 Difference]: Finished difference Result 26314 states and 38134 transitions. [2020-12-22 08:21:09,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 08:21:09,425 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 59 [2020-12-22 08:21:09,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:09,455 INFO L225 Difference]: With dead ends: 26314 [2020-12-22 08:21:09,455 INFO L226 Difference]: Without dead ends: 26310 [2020-12-22 08:21:09,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=200, Invalid=670, Unknown=0, NotChecked=0, Total=870 [2020-12-22 08:21:09,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26310 states. [2020-12-22 08:21:11,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26310 to 8662. [2020-12-22 08:21:11,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8662 states. [2020-12-22 08:21:11,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8662 states to 8662 states and 12441 transitions. [2020-12-22 08:21:11,040 INFO L78 Accepts]: Start accepts. Automaton has 8662 states and 12441 transitions. Word has length 59 [2020-12-22 08:21:11,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:11,040 INFO L481 AbstractCegarLoop]: Abstraction has 8662 states and 12441 transitions. [2020-12-22 08:21:11,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 08:21:11,040 INFO L276 IsEmpty]: Start isEmpty. Operand 8662 states and 12441 transitions. [2020-12-22 08:21:11,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 08:21:11,041 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:11,041 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] [2020-12-22 08:21:11,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:21:11,042 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:11,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:11,042 INFO L82 PathProgramCache]: Analyzing trace with hash 467681014, now seen corresponding path program 1 times [2020-12-22 08:21:11,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:11,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574885747] [2020-12-22 08:21:11,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:11,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:11,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574885747] [2020-12-22 08:21:11,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:11,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-12-22 08:21:11,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812757468] [2020-12-22 08:21:11,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 08:21:11,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:11,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 08:21:11,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:21:11,738 INFO L87 Difference]: Start difference. First operand 8662 states and 12441 transitions. Second operand 15 states. [2020-12-22 08:21:11,871 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-12-22 08:21:12,124 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2020-12-22 08:21:12,264 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-12-22 08:21:12,395 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-12-22 08:21:12,620 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-12-22 08:21:12,940 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-12-22 08:21:13,176 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-12-22 08:21:13,456 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-12-22 08:21:13,783 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-12-22 08:21:14,110 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-12-22 08:21:14,412 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-12-22 08:21:14,860 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-12-22 08:21:15,584 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-12-22 08:21:16,328 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-12-22 08:21:20,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:20,847 INFO L93 Difference]: Finished difference Result 18329 states and 26406 transitions. [2020-12-22 08:21:20,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 08:21:20,848 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 59 [2020-12-22 08:21:20,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:20,865 INFO L225 Difference]: With dead ends: 18329 [2020-12-22 08:21:20,865 INFO L226 Difference]: Without dead ends: 18090 [2020-12-22 08:21:20,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=229, Invalid=641, Unknown=0, NotChecked=0, Total=870 [2020-12-22 08:21:20,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18090 states. [2020-12-22 08:21:22,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18090 to 8653. [2020-12-22 08:21:22,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8653 states. [2020-12-22 08:21:22,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8653 states to 8653 states and 12429 transitions. [2020-12-22 08:21:22,601 INFO L78 Accepts]: Start accepts. Automaton has 8653 states and 12429 transitions. Word has length 59 [2020-12-22 08:21:22,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:22,601 INFO L481 AbstractCegarLoop]: Abstraction has 8653 states and 12429 transitions. [2020-12-22 08:21:22,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 08:21:22,602 INFO L276 IsEmpty]: Start isEmpty. Operand 8653 states and 12429 transitions. [2020-12-22 08:21:22,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:21:22,604 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:22,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:21:22,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:21:22,605 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:22,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:22,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1327663405, now seen corresponding path program 1 times [2020-12-22 08:21:22,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:22,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206549351] [2020-12-22 08:21:22,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:22,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:22,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206549351] [2020-12-22 08:21:22,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:22,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:21:22,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406751236] [2020-12-22 08:21:22,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:21:22,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:22,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:21:22,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:22,663 INFO L87 Difference]: Start difference. First operand 8653 states and 12429 transitions. Second operand 3 states. [2020-12-22 08:21:25,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:25,525 INFO L93 Difference]: Finished difference Result 22231 states and 32106 transitions. [2020-12-22 08:21:25,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:21:25,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 08:21:25,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:25,542 INFO L225 Difference]: With dead ends: 22231 [2020-12-22 08:21:25,542 INFO L226 Difference]: Without dead ends: 14403 [2020-12-22 08:21:25,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:25,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14403 states. [2020-12-22 08:21:28,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14403 to 14401. [2020-12-22 08:21:28,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14401 states. [2020-12-22 08:21:28,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14401 states to 14401 states and 20428 transitions. [2020-12-22 08:21:28,481 INFO L78 Accepts]: Start accepts. Automaton has 14401 states and 20428 transitions. Word has length 66 [2020-12-22 08:21:28,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:28,481 INFO L481 AbstractCegarLoop]: Abstraction has 14401 states and 20428 transitions. [2020-12-22 08:21:28,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:21:28,481 INFO L276 IsEmpty]: Start isEmpty. Operand 14401 states and 20428 transitions. [2020-12-22 08:21:28,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:21:28,485 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:28,485 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] [2020-12-22 08:21:28,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:21:28,485 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:28,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:28,486 INFO L82 PathProgramCache]: Analyzing trace with hash -2106166862, now seen corresponding path program 1 times [2020-12-22 08:21:28,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:28,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740234799] [2020-12-22 08:21:28,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:28,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:28,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740234799] [2020-12-22 08:21:28,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:28,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:21:28,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780556989] [2020-12-22 08:21:28,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:21:28,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:28,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:21:28,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:21:28,584 INFO L87 Difference]: Start difference. First operand 14401 states and 20428 transitions. Second operand 5 states. [2020-12-22 08:21:31,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:31,113 INFO L93 Difference]: Finished difference Result 24237 states and 34436 transitions. [2020-12-22 08:21:31,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:21:31,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-12-22 08:21:31,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:31,124 INFO L225 Difference]: With dead ends: 24237 [2020-12-22 08:21:31,124 INFO L226 Difference]: Without dead ends: 10659 [2020-12-22 08:21:31,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:21:31,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10659 states. [2020-12-22 08:21:33,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10659 to 10655. [2020-12-22 08:21:33,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10655 states. [2020-12-22 08:21:33,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10655 states to 10655 states and 14951 transitions. [2020-12-22 08:21:33,608 INFO L78 Accepts]: Start accepts. Automaton has 10655 states and 14951 transitions. Word has length 67 [2020-12-22 08:21:33,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:33,609 INFO L481 AbstractCegarLoop]: Abstraction has 10655 states and 14951 transitions. [2020-12-22 08:21:33,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:21:33,609 INFO L276 IsEmpty]: Start isEmpty. Operand 10655 states and 14951 transitions. [2020-12-22 08:21:33,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:21:33,612 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:33,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:21:33,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:21:33,612 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:33,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:33,613 INFO L82 PathProgramCache]: Analyzing trace with hash -565252104, now seen corresponding path program 1 times [2020-12-22 08:21:33,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:33,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25615872] [2020-12-22 08:21:33,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:33,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:33,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25615872] [2020-12-22 08:21:33,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:33,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:21:33,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034668444] [2020-12-22 08:21:33,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:21:33,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:33,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:21:33,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:33,672 INFO L87 Difference]: Start difference. First operand 10655 states and 14951 transitions. Second operand 3 states. [2020-12-22 08:21:38,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:38,487 INFO L93 Difference]: Finished difference Result 28509 states and 40204 transitions. [2020-12-22 08:21:38,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:21:38,488 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 08:21:38,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:38,507 INFO L225 Difference]: With dead ends: 28509 [2020-12-22 08:21:38,507 INFO L226 Difference]: Without dead ends: 18677 [2020-12-22 08:21:38,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:38,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18677 states. [2020-12-22 08:21:42,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18677 to 17565. [2020-12-22 08:21:42,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17565 states. [2020-12-22 08:21:42,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17565 states to 17565 states and 24525 transitions. [2020-12-22 08:21:42,751 INFO L78 Accepts]: Start accepts. Automaton has 17565 states and 24525 transitions. Word has length 69 [2020-12-22 08:21:42,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:42,751 INFO L481 AbstractCegarLoop]: Abstraction has 17565 states and 24525 transitions. [2020-12-22 08:21:42,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:21:42,752 INFO L276 IsEmpty]: Start isEmpty. Operand 17565 states and 24525 transitions. [2020-12-22 08:21:42,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 08:21:42,755 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:42,755 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] [2020-12-22 08:21:42,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 08:21:42,755 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:42,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:42,756 INFO L82 PathProgramCache]: Analyzing trace with hash -195732182, now seen corresponding path program 1 times [2020-12-22 08:21:42,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:42,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149555520] [2020-12-22 08:21:42,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:42,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:42,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149555520] [2020-12-22 08:21:42,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:42,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:21:42,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067918646] [2020-12-22 08:21:42,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:21:42,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:42,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:21:42,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:42,814 INFO L87 Difference]: Start difference. First operand 17565 states and 24525 transitions. Second operand 3 states. [2020-12-22 08:21:50,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:50,487 INFO L93 Difference]: Finished difference Result 47829 states and 66780 transitions. [2020-12-22 08:21:50,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:21:50,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-22 08:21:50,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:50,520 INFO L225 Difference]: With dead ends: 47829 [2020-12-22 08:21:50,520 INFO L226 Difference]: Without dead ends: 31047 [2020-12-22 08:21:50,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:50,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31047 states. [2020-12-22 08:21:57,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31047 to 28951. [2020-12-22 08:21:57,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28951 states. [2020-12-22 08:21:57,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28951 states to 28951 states and 39983 transitions. [2020-12-22 08:21:57,746 INFO L78 Accepts]: Start accepts. Automaton has 28951 states and 39983 transitions. Word has length 72 [2020-12-22 08:21:57,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:57,746 INFO L481 AbstractCegarLoop]: Abstraction has 28951 states and 39983 transitions. [2020-12-22 08:21:57,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:21:57,746 INFO L276 IsEmpty]: Start isEmpty. Operand 28951 states and 39983 transitions. [2020-12-22 08:21:57,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 08:21:57,748 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:57,748 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] [2020-12-22 08:21:57,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 08:21:57,749 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:57,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:57,749 INFO L82 PathProgramCache]: Analyzing trace with hash 950824169, now seen corresponding path program 1 times [2020-12-22 08:21:57,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:57,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902738659] [2020-12-22 08:21:57,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:57,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:57,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902738659] [2020-12-22 08:21:57,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:57,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:21:57,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813480284] [2020-12-22 08:21:57,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:21:57,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:57,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:21:57,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:21:57,859 INFO L87 Difference]: Start difference. First operand 28951 states and 39983 transitions. Second operand 6 states. [2020-12-22 08:22:11,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:22:11,763 INFO L93 Difference]: Finished difference Result 51637 states and 70148 transitions. [2020-12-22 08:22:11,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:22:11,766 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-12-22 08:22:11,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:22:11,827 INFO L225 Difference]: With dead ends: 51637 [2020-12-22 08:22:11,827 INFO L226 Difference]: Without dead ends: 51635 [2020-12-22 08:22:11,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:22:11,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51635 states. [2020-12-22 08:22:20,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51635 to 30250. [2020-12-22 08:22:20,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30250 states. [2020-12-22 08:22:20,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30250 states to 30250 states and 41282 transitions. [2020-12-22 08:22:20,196 INFO L78 Accepts]: Start accepts. Automaton has 30250 states and 41282 transitions. Word has length 72 [2020-12-22 08:22:20,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:22:20,196 INFO L481 AbstractCegarLoop]: Abstraction has 30250 states and 41282 transitions. [2020-12-22 08:22:20,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:22:20,197 INFO L276 IsEmpty]: Start isEmpty. Operand 30250 states and 41282 transitions. [2020-12-22 08:22:20,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 08:22:20,198 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:22:20,199 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] [2020-12-22 08:22:20,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 08:22:20,199 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:22:20,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:22:20,199 INFO L82 PathProgramCache]: Analyzing trace with hash -467379378, now seen corresponding path program 1 times [2020-12-22 08:22:20,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:22:20,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873469980] [2020-12-22 08:22:20,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:22:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:22:20,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:22:20,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873469980] [2020-12-22 08:22:20,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:22:20,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:22:20,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832788443] [2020-12-22 08:22:20,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:22:20,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:22:20,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:22:20,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:22:20,257 INFO L87 Difference]: Start difference. First operand 30250 states and 41282 transitions. Second operand 3 states. [2020-12-22 08:22:34,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:22:34,748 INFO L93 Difference]: Finished difference Result 81711 states and 110799 transitions. [2020-12-22 08:22:34,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:22:34,749 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 08:22:34,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:22:34,829 INFO L225 Difference]: With dead ends: 81711 [2020-12-22 08:22:34,829 INFO L226 Difference]: Without dead ends: 52248 [2020-12-22 08:22:34,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:22:34,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52248 states. [2020-12-22 08:22:49,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52248 to 52246. [2020-12-22 08:22:49,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52246 states. [2020-12-22 08:22:49,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52246 states to 52246 states and 69976 transitions. [2020-12-22 08:22:49,245 INFO L78 Accepts]: Start accepts. Automaton has 52246 states and 69976 transitions. Word has length 73 [2020-12-22 08:22:49,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:22:49,245 INFO L481 AbstractCegarLoop]: Abstraction has 52246 states and 69976 transitions. [2020-12-22 08:22:49,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:22:49,245 INFO L276 IsEmpty]: Start isEmpty. Operand 52246 states and 69976 transitions. [2020-12-22 08:22:49,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 08:22:49,249 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:22:49,249 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] [2020-12-22 08:22:49,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 08:22:49,250 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:22:49,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:22:49,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1003850221, now seen corresponding path program 1 times [2020-12-22 08:22:49,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:22:49,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579367776] [2020-12-22 08:22:49,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:22:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:22:49,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:22:49,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579367776] [2020-12-22 08:22:49,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:22:49,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:22:49,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251365176] [2020-12-22 08:22:49,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:22:49,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:22:49,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:22:49,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:22:49,391 INFO L87 Difference]: Start difference. First operand 52246 states and 69976 transitions. Second operand 6 states. [2020-12-22 08:23:16,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:23:16,678 INFO L93 Difference]: Finished difference Result 123877 states and 165366 transitions. [2020-12-22 08:23:16,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:23:16,679 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-12-22 08:23:16,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:23:16,788 INFO L225 Difference]: With dead ends: 123877 [2020-12-22 08:23:16,788 INFO L226 Difference]: Without dead ends: 97811 [2020-12-22 08:23:16,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:23:16,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97811 states. [2020-12-22 08:23:44,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97811 to 97183. [2020-12-22 08:23:44,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97183 states. [2020-12-22 08:23:44,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97183 states to 97183 states and 129267 transitions. [2020-12-22 08:23:44,589 INFO L78 Accepts]: Start accepts. Automaton has 97183 states and 129267 transitions. Word has length 85 [2020-12-22 08:23:44,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:23:44,589 INFO L481 AbstractCegarLoop]: Abstraction has 97183 states and 129267 transitions. [2020-12-22 08:23:44,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:23:44,589 INFO L276 IsEmpty]: Start isEmpty. Operand 97183 states and 129267 transitions. [2020-12-22 08:23:44,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 08:23:44,594 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:23:44,594 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] [2020-12-22 08:23:44,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 08:23:44,594 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:23:44,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:23:44,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1777388971, now seen corresponding path program 1 times [2020-12-22 08:23:44,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:23:44,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874521240] [2020-12-22 08:23:44,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:23:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:23:44,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:23:44,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874521240] [2020-12-22 08:23:44,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:23:44,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:23:44,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367356910] [2020-12-22 08:23:44,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:23:44,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:23:44,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:23:44,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:23:44,952 INFO L87 Difference]: Start difference. First operand 97183 states and 129267 transitions. Second operand 5 states.