/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/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 09:49:57,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 09:49:57,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 09:49:57,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 09:49:57,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 09:49:57,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 09:49:57,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 09:49:57,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 09:49:57,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 09:49:57,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 09:49:57,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 09:49:57,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 09:49:57,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 09:49:57,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 09:49:57,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 09:49:57,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 09:49:57,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 09:49:57,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 09:49:57,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 09:49:57,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 09:49:57,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 09:49:57,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 09:49:57,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 09:49:57,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 09:49:57,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 09:49:57,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 09:49:57,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 09:49:57,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 09:49:57,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 09:49:57,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 09:49:57,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 09:49:57,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 09:49:57,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 09:49:57,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 09:49:57,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 09:49:57,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 09:49:57,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 09:49:57,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 09:49:57,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 09:49:57,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 09:49:57,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 09:49:57,301 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 09:49:57,329 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 09:49:57,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 09:49:57,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 09:49:57,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 09:49:57,332 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 09:49:57,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 09:49:57,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 09:49:57,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 09:49:57,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 09:49:57,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 09:49:57,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 09:49:57,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 09:49:57,335 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 09:49:57,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 09:49:57,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 09:49:57,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 09:49:57,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 09:49:57,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:49:57,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 09:49:57,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 09:49:57,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 09:49:57,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 09:49:57,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 09:49:57,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 09:49:57,338 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 09:49:57,338 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 09:49:57,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 09:49:57,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 09:49:57,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 09:49:57,751 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 09:49:57,752 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 09:49:57,753 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c [2020-12-23 09:49:57,856 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1d82117e2/898fb61bf30347f393eceb43a8feb3ff/FLAG615b3a657 [2020-12-23 09:49:58,639 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 09:49:58,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c [2020-12-23 09:49:58,656 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1d82117e2/898fb61bf30347f393eceb43a8feb3ff/FLAG615b3a657 [2020-12-23 09:49:58,957 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1d82117e2/898fb61bf30347f393eceb43a8feb3ff [2020-12-23 09:49:58,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 09:49:58,962 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 09:49:58,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 09:49:58,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 09:49:58,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 09:49:58,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:49:58" (1/1) ... [2020-12-23 09:49:58,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f7ead07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:49:58, skipping insertion in model container [2020-12-23 09:49:58,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:49:58" (1/1) ... [2020-12-23 09:49:58,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 09:49:59,039 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2020-12-23 09:49:59,338 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c[6803,6816] [2020-12-23 09:49:59,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:49:59,352 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2020-12-23 09:49:59,406 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c[6803,6816] [2020-12-23 09:49:59,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:49:59,428 INFO L208 MainTranslator]: Completed translation [2020-12-23 09:49:59,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:49:59 WrapperNode [2020-12-23 09:49:59,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 09:49:59,430 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 09:49:59,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 09:49:59,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 09:49:59,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:49:59" (1/1) ... [2020-12-23 09:49:59,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:49:59" (1/1) ... [2020-12-23 09:49:59,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 09:49:59,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 09:49:59,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 09:49:59,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 09:49:59,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:49:59" (1/1) ... [2020-12-23 09:49:59,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:49:59" (1/1) ... [2020-12-23 09:49:59,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:49:59" (1/1) ... [2020-12-23 09:49:59,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:49:59" (1/1) ... [2020-12-23 09:49:59,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:49:59" (1/1) ... [2020-12-23 09:49:59,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:49:59" (1/1) ... [2020-12-23 09:49:59,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:49:59" (1/1) ... [2020-12-23 09:49:59,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 09:49:59,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 09:49:59,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 09:49:59,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 09:49:59,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:49:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 09:49:59,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 09:49:59,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 09:49:59,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 09:49:59,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 09:50:00,586 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 09:50:00,587 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-23 09:50:00,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:50:00 BoogieIcfgContainer [2020-12-23 09:50:00,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 09:50:00,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 09:50:00,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 09:50:00,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 09:50:00,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:49:58" (1/3) ... [2020-12-23 09:50:00,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fdac4ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:50:00, skipping insertion in model container [2020-12-23 09:50:00,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:49:59" (2/3) ... [2020-12-23 09:50:00,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fdac4ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:50:00, skipping insertion in model container [2020-12-23 09:50:00,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:50:00" (3/3) ... [2020-12-23 09:50:00,606 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c [2020-12-23 09:50:00,614 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 09:50:00,620 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 09:50:00,645 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 09:50:00,690 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 09:50:00,691 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 09:50:00,691 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 09:50:00,691 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 09:50:00,691 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 09:50:00,691 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 09:50:00,691 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 09:50:00,692 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 09:50:00,713 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-12-23 09:50:00,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 09:50:00,724 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:50:00,725 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] [2020-12-23 09:50:00,725 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:50:00,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:50:00,732 INFO L82 PathProgramCache]: Analyzing trace with hash 233700331, now seen corresponding path program 1 times [2020-12-23 09:50:00,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:50:00,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973054787] [2020-12-23 09:50:00,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:50:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:01,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:50:01,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973054787] [2020-12-23 09:50:01,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:50:01,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:50:01,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912907988] [2020-12-23 09:50:01,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:50:01,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:50:01,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:50:01,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:50:01,158 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 5 states. [2020-12-23 09:50:01,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:50:01,280 INFO L93 Difference]: Finished difference Result 191 states and 307 transitions. [2020-12-23 09:50:01,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:50:01,282 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-12-23 09:50:01,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:50:01,295 INFO L225 Difference]: With dead ends: 191 [2020-12-23 09:50:01,295 INFO L226 Difference]: Without dead ends: 127 [2020-12-23 09:50:01,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:50:01,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-23 09:50:01,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 75. [2020-12-23 09:50:01,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-23 09:50:01,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 105 transitions. [2020-12-23 09:50:01,348 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 105 transitions. Word has length 25 [2020-12-23 09:50:01,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:50:01,348 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 105 transitions. [2020-12-23 09:50:01,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:50:01,349 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 105 transitions. [2020-12-23 09:50:01,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 09:50:01,351 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:50:01,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:50:01,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 09:50:01,352 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:50:01,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:50:01,353 INFO L82 PathProgramCache]: Analyzing trace with hash 182027041, now seen corresponding path program 1 times [2020-12-23 09:50:01,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:50:01,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337583378] [2020-12-23 09:50:01,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:50:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:01,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:50:01,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337583378] [2020-12-23 09:50:01,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:50:01,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:50:01,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047803035] [2020-12-23 09:50:01,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:50:01,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:50:01,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:50:01,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:50:01,467 INFO L87 Difference]: Start difference. First operand 75 states and 105 transitions. Second operand 3 states. [2020-12-23 09:50:01,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:50:01,498 INFO L93 Difference]: Finished difference Result 167 states and 249 transitions. [2020-12-23 09:50:01,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:50:01,499 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-12-23 09:50:01,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:50:01,501 INFO L225 Difference]: With dead ends: 167 [2020-12-23 09:50:01,501 INFO L226 Difference]: Without dead ends: 115 [2020-12-23 09:50:01,502 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 [2020-12-23 09:50:01,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-23 09:50:01,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2020-12-23 09:50:01,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-12-23 09:50:01,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 165 transitions. [2020-12-23 09:50:01,517 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 165 transitions. Word has length 41 [2020-12-23 09:50:01,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:50:01,517 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 165 transitions. [2020-12-23 09:50:01,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:50:01,518 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 165 transitions. [2020-12-23 09:50:01,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-23 09:50:01,519 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:50:01,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:50:01,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 09:50:01,520 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:50:01,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:50:01,521 INFO L82 PathProgramCache]: Analyzing trace with hash 54990345, now seen corresponding path program 1 times [2020-12-23 09:50:01,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:50:01,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133502710] [2020-12-23 09:50:01,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:50:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:01,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:50:01,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133502710] [2020-12-23 09:50:01,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:50:01,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:50:01,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82457797] [2020-12-23 09:50:01,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:50:01,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:50:01,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:50:01,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:50:01,697 INFO L87 Difference]: Start difference. First operand 113 states and 165 transitions. Second operand 3 states. [2020-12-23 09:50:01,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:50:01,751 INFO L93 Difference]: Finished difference Result 269 states and 409 transitions. [2020-12-23 09:50:01,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:50:01,752 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-12-23 09:50:01,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:50:01,758 INFO L225 Difference]: With dead ends: 269 [2020-12-23 09:50:01,758 INFO L226 Difference]: Without dead ends: 179 [2020-12-23 09:50:01,760 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 [2020-12-23 09:50:01,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-12-23 09:50:01,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2020-12-23 09:50:01,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-12-23 09:50:01,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 264 transitions. [2020-12-23 09:50:01,800 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 264 transitions. Word has length 42 [2020-12-23 09:50:01,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:50:01,800 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 264 transitions. [2020-12-23 09:50:01,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:50:01,801 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 264 transitions. [2020-12-23 09:50:01,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-23 09:50:01,802 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:50:01,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:50:01,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 09:50:01,803 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:50:01,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:50:01,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1508061361, now seen corresponding path program 1 times [2020-12-23 09:50:01,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:50:01,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606499891] [2020-12-23 09:50:01,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:50:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:01,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:50:01,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606499891] [2020-12-23 09:50:01,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:50:01,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:50:01,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082022233] [2020-12-23 09:50:01,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:50:01,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:50:01,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:50:01,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:50:01,897 INFO L87 Difference]: Start difference. First operand 177 states and 264 transitions. Second operand 3 states. [2020-12-23 09:50:01,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:50:01,931 INFO L93 Difference]: Finished difference Result 437 states and 666 transitions. [2020-12-23 09:50:01,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:50:01,932 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-12-23 09:50:01,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:50:01,934 INFO L225 Difference]: With dead ends: 437 [2020-12-23 09:50:01,935 INFO L226 Difference]: Without dead ends: 283 [2020-12-23 09:50:01,936 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 [2020-12-23 09:50:01,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-12-23 09:50:01,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 281. [2020-12-23 09:50:01,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-12-23 09:50:01,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 420 transitions. [2020-12-23 09:50:01,969 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 420 transitions. Word has length 43 [2020-12-23 09:50:01,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:50:01,970 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 420 transitions. [2020-12-23 09:50:01,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:50:01,970 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 420 transitions. [2020-12-23 09:50:01,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 09:50:01,971 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:50:01,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:50:01,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 09:50:01,972 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:50:01,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:50:01,973 INFO L82 PathProgramCache]: Analyzing trace with hash -922713191, now seen corresponding path program 1 times [2020-12-23 09:50:01,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:50:01,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493890971] [2020-12-23 09:50:01,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:50:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:02,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:50:02,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493890971] [2020-12-23 09:50:02,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:50:02,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:50:02,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172191655] [2020-12-23 09:50:02,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:50:02,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:50:02,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:50:02,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:50:02,164 INFO L87 Difference]: Start difference. First operand 281 states and 420 transitions. Second operand 5 states. [2020-12-23 09:50:02,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:50:02,326 INFO L93 Difference]: Finished difference Result 971 states and 1467 transitions. [2020-12-23 09:50:02,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:50:02,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-12-23 09:50:02,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:50:02,332 INFO L225 Difference]: With dead ends: 971 [2020-12-23 09:50:02,333 INFO L226 Difference]: Without dead ends: 713 [2020-12-23 09:50:02,335 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 [2020-12-23 09:50:02,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-12-23 09:50:02,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 709. [2020-12-23 09:50:02,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2020-12-23 09:50:02,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1060 transitions. [2020-12-23 09:50:02,397 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1060 transitions. Word has length 44 [2020-12-23 09:50:02,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:50:02,397 INFO L481 AbstractCegarLoop]: Abstraction has 709 states and 1060 transitions. [2020-12-23 09:50:02,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:50:02,398 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1060 transitions. [2020-12-23 09:50:02,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-23 09:50:02,400 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:50:02,400 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] [2020-12-23 09:50:02,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 09:50:02,400 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:50:02,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:50:02,401 INFO L82 PathProgramCache]: Analyzing trace with hash 2131571990, now seen corresponding path program 1 times [2020-12-23 09:50:02,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:50:02,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530146074] [2020-12-23 09:50:02,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:50:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:02,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:50:02,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530146074] [2020-12-23 09:50:02,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:50:02,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:50:02,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656750342] [2020-12-23 09:50:02,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:50:02,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:50:02,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:50:02,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:50:02,583 INFO L87 Difference]: Start difference. First operand 709 states and 1060 transitions. Second operand 5 states. [2020-12-23 09:50:02,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:50:02,793 INFO L93 Difference]: Finished difference Result 2801 states and 4220 transitions. [2020-12-23 09:50:02,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:50:02,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-12-23 09:50:02,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:50:02,808 INFO L225 Difference]: With dead ends: 2801 [2020-12-23 09:50:02,809 INFO L226 Difference]: Without dead ends: 2115 [2020-12-23 09:50:02,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:50:02,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2020-12-23 09:50:02,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 1393. [2020-12-23 09:50:02,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1393 states. [2020-12-23 09:50:02,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 2048 transitions. [2020-12-23 09:50:02,925 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 2048 transitions. Word has length 45 [2020-12-23 09:50:02,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:50:02,928 INFO L481 AbstractCegarLoop]: Abstraction has 1393 states and 2048 transitions. [2020-12-23 09:50:02,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:50:02,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 2048 transitions. [2020-12-23 09:50:02,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-23 09:50:02,938 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:50:02,939 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] [2020-12-23 09:50:02,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 09:50:02,939 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:50:02,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:50:02,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1270898830, now seen corresponding path program 1 times [2020-12-23 09:50:02,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:50:02,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772193124] [2020-12-23 09:50:02,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:50:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:03,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:50:03,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772193124] [2020-12-23 09:50:03,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:50:03,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:50:03,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560083115] [2020-12-23 09:50:03,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:50:03,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:50:03,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:50:03,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:50:03,089 INFO L87 Difference]: Start difference. First operand 1393 states and 2048 transitions. Second operand 5 states. [2020-12-23 09:50:03,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:50:03,279 INFO L93 Difference]: Finished difference Result 2955 states and 4265 transitions. [2020-12-23 09:50:03,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:50:03,280 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-12-23 09:50:03,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:50:03,297 INFO L225 Difference]: With dead ends: 2955 [2020-12-23 09:50:03,297 INFO L226 Difference]: Without dead ends: 2953 [2020-12-23 09:50:03,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:50:03,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2020-12-23 09:50:03,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1537. [2020-12-23 09:50:03,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1537 states. [2020-12-23 09:50:03,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1537 states to 1537 states and 2192 transitions. [2020-12-23 09:50:03,434 INFO L78 Accepts]: Start accepts. Automaton has 1537 states and 2192 transitions. Word has length 46 [2020-12-23 09:50:03,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:50:03,435 INFO L481 AbstractCegarLoop]: Abstraction has 1537 states and 2192 transitions. [2020-12-23 09:50:03,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:50:03,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1537 states and 2192 transitions. [2020-12-23 09:50:03,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-23 09:50:03,436 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:50:03,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:50:03,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 09:50:03,437 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:50:03,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:50:03,438 INFO L82 PathProgramCache]: Analyzing trace with hash 795736558, now seen corresponding path program 1 times [2020-12-23 09:50:03,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:50:03,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753244749] [2020-12-23 09:50:03,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:50:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:03,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:50:03,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753244749] [2020-12-23 09:50:03,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:50:03,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:50:03,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137776276] [2020-12-23 09:50:03,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:50:03,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:50:03,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:50:03,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:50:03,492 INFO L87 Difference]: Start difference. First operand 1537 states and 2192 transitions. Second operand 3 states. [2020-12-23 09:50:03,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:50:03,620 INFO L93 Difference]: Finished difference Result 3651 states and 5220 transitions. [2020-12-23 09:50:03,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:50:03,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-12-23 09:50:03,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:50:03,633 INFO L225 Difference]: With dead ends: 3651 [2020-12-23 09:50:03,633 INFO L226 Difference]: Without dead ends: 2137 [2020-12-23 09:50:03,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:50:03,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2020-12-23 09:50:03,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2135. [2020-12-23 09:50:03,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2135 states. [2020-12-23 09:50:03,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 3030 transitions. [2020-12-23 09:50:03,768 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 3030 transitions. Word has length 47 [2020-12-23 09:50:03,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:50:03,769 INFO L481 AbstractCegarLoop]: Abstraction has 2135 states and 3030 transitions. [2020-12-23 09:50:03,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:50:03,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 3030 transitions. [2020-12-23 09:50:03,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-23 09:50:03,772 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:50:03,772 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:50:03,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 09:50:03,773 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:50:03,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:50:03,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1282796535, now seen corresponding path program 1 times [2020-12-23 09:50:03,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:50:03,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634381239] [2020-12-23 09:50:03,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:50:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:04,021 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:50:04,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634381239] [2020-12-23 09:50:04,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405337151] [2020-12-23 09:50:04,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:50:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:04,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 09:50:04,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:50:04,340 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 09:50:04,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:50:04,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 14 [2020-12-23 09:50:04,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928489992] [2020-12-23 09:50:04,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-23 09:50:04,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:50:04,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-23 09:50:04,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-12-23 09:50:04,343 INFO L87 Difference]: Start difference. First operand 2135 states and 3030 transitions. Second operand 14 states. [2020-12-23 09:50:09,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:50:09,549 INFO L93 Difference]: Finished difference Result 16364 states and 23062 transitions. [2020-12-23 09:50:09,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-12-23 09:50:09,549 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 66 [2020-12-23 09:50:09,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:50:09,629 INFO L225 Difference]: With dead ends: 16364 [2020-12-23 09:50:09,630 INFO L226 Difference]: Without dead ends: 14354 [2020-12-23 09:50:09,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2714 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1482, Invalid=5828, Unknown=0, NotChecked=0, Total=7310 [2020-12-23 09:50:09,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14354 states. [2020-12-23 09:50:10,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14354 to 8129. [2020-12-23 09:50:10,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8129 states. [2020-12-23 09:50:10,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8129 states to 8129 states and 11436 transitions. [2020-12-23 09:50:10,275 INFO L78 Accepts]: Start accepts. Automaton has 8129 states and 11436 transitions. Word has length 66 [2020-12-23 09:50:10,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:50:10,276 INFO L481 AbstractCegarLoop]: Abstraction has 8129 states and 11436 transitions. [2020-12-23 09:50:10,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-23 09:50:10,276 INFO L276 IsEmpty]: Start isEmpty. Operand 8129 states and 11436 transitions. [2020-12-23 09:50:10,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 09:50:10,281 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:50:10,281 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:50:10,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-23 09:50:10,498 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:50:10,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:50:10,500 INFO L82 PathProgramCache]: Analyzing trace with hash 129974557, now seen corresponding path program 1 times [2020-12-23 09:50:10,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:50:10,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834275946] [2020-12-23 09:50:10,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:50:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:10,632 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:50:10,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834275946] [2020-12-23 09:50:10,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:50:10,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:50:10,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132461212] [2020-12-23 09:50:10,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:50:10,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:50:10,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:50:10,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:50:10,635 INFO L87 Difference]: Start difference. First operand 8129 states and 11436 transitions. Second operand 3 states. [2020-12-23 09:50:11,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:50:11,109 INFO L93 Difference]: Finished difference Result 12669 states and 17784 transitions. [2020-12-23 09:50:11,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:50:11,110 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-23 09:50:11,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:50:11,177 INFO L225 Difference]: With dead ends: 12669 [2020-12-23 09:50:11,177 INFO L226 Difference]: Without dead ends: 8439 [2020-12-23 09:50:11,188 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 [2020-12-23 09:50:11,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8439 states. [2020-12-23 09:50:11,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8439 to 8199. [2020-12-23 09:50:11,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8199 states. [2020-12-23 09:50:11,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8199 states to 8199 states and 11291 transitions. [2020-12-23 09:50:11,685 INFO L78 Accepts]: Start accepts. Automaton has 8199 states and 11291 transitions. Word has length 67 [2020-12-23 09:50:11,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:50:11,685 INFO L481 AbstractCegarLoop]: Abstraction has 8199 states and 11291 transitions. [2020-12-23 09:50:11,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:50:11,685 INFO L276 IsEmpty]: Start isEmpty. Operand 8199 states and 11291 transitions. [2020-12-23 09:50:11,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 09:50:11,689 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:50:11,689 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:50:11,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 09:50:11,689 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:50:11,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:50:11,690 INFO L82 PathProgramCache]: Analyzing trace with hash 788719803, now seen corresponding path program 1 times [2020-12-23 09:50:11,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:50:11,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768828737] [2020-12-23 09:50:11,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:50:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:11,737 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:50:11,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768828737] [2020-12-23 09:50:11,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:50:11,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:50:11,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526342913] [2020-12-23 09:50:11,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:50:11,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:50:11,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:50:11,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:50:11,740 INFO L87 Difference]: Start difference. First operand 8199 states and 11291 transitions. Second operand 3 states. [2020-12-23 09:50:12,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:50:12,252 INFO L93 Difference]: Finished difference Result 19858 states and 27237 transitions. [2020-12-23 09:50:12,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:50:12,254 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-23 09:50:12,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:50:12,288 INFO L225 Difference]: With dead ends: 19858 [2020-12-23 09:50:12,288 INFO L226 Difference]: Without dead ends: 13692 [2020-12-23 09:50:12,302 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 [2020-12-23 09:50:12,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13692 states. [2020-12-23 09:50:13,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13692 to 13652. [2020-12-23 09:50:13,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13652 states. [2020-12-23 09:50:13,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13652 states to 13652 states and 18469 transitions. [2020-12-23 09:50:13,262 INFO L78 Accepts]: Start accepts. Automaton has 13652 states and 18469 transitions. Word has length 67 [2020-12-23 09:50:13,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:50:13,262 INFO L481 AbstractCegarLoop]: Abstraction has 13652 states and 18469 transitions. [2020-12-23 09:50:13,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:50:13,262 INFO L276 IsEmpty]: Start isEmpty. Operand 13652 states and 18469 transitions. [2020-12-23 09:50:13,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 09:50:13,267 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:50:13,268 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:50:13,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 09:50:13,268 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:50:13,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:50:13,269 INFO L82 PathProgramCache]: Analyzing trace with hash -691738293, now seen corresponding path program 1 times [2020-12-23 09:50:13,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:50:13,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000900956] [2020-12-23 09:50:13,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:50:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:13,373 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:50:13,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000900956] [2020-12-23 09:50:13,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:50:13,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:50:13,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738901059] [2020-12-23 09:50:13,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:50:13,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:50:13,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:50:13,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:50:13,376 INFO L87 Difference]: Start difference. First operand 13652 states and 18469 transitions. Second operand 6 states. [2020-12-23 09:50:14,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:50:14,383 INFO L93 Difference]: Finished difference Result 34017 states and 45971 transitions. [2020-12-23 09:50:14,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:50:14,384 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-23 09:50:14,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:50:14,442 INFO L225 Difference]: With dead ends: 34017 [2020-12-23 09:50:14,442 INFO L226 Difference]: Without dead ends: 20418 [2020-12-23 09:50:14,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 09:50:14,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20418 states. [2020-12-23 09:50:15,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20418 to 18657. [2020-12-23 09:50:15,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18657 states. [2020-12-23 09:50:15,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18657 states to 18657 states and 24991 transitions. [2020-12-23 09:50:15,611 INFO L78 Accepts]: Start accepts. Automaton has 18657 states and 24991 transitions. Word has length 67 [2020-12-23 09:50:15,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:50:15,611 INFO L481 AbstractCegarLoop]: Abstraction has 18657 states and 24991 transitions. [2020-12-23 09:50:15,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:50:15,611 INFO L276 IsEmpty]: Start isEmpty. Operand 18657 states and 24991 transitions. [2020-12-23 09:50:15,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 09:50:15,617 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:50:15,617 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:50:15,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 09:50:15,618 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:50:15,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:50:15,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1134894771, now seen corresponding path program 1 times [2020-12-23 09:50:15,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:50:15,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234350217] [2020-12-23 09:50:15,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:50:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:15,663 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:50:15,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234350217] [2020-12-23 09:50:15,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:50:15,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:50:15,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868468748] [2020-12-23 09:50:15,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:50:15,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:50:15,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:50:15,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:50:15,666 INFO L87 Difference]: Start difference. First operand 18657 states and 24991 transitions. Second operand 3 states. [2020-12-23 09:50:16,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:50:16,629 INFO L93 Difference]: Finished difference Result 36798 states and 49081 transitions. [2020-12-23 09:50:16,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:50:16,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-23 09:50:16,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:50:16,678 INFO L225 Difference]: With dead ends: 36798 [2020-12-23 09:50:16,678 INFO L226 Difference]: Without dead ends: 20558 [2020-12-23 09:50:16,700 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 [2020-12-23 09:50:16,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20558 states. [2020-12-23 09:50:17,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20558 to 16817. [2020-12-23 09:50:17,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16817 states. [2020-12-23 09:50:17,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16817 states to 16817 states and 22125 transitions. [2020-12-23 09:50:17,708 INFO L78 Accepts]: Start accepts. Automaton has 16817 states and 22125 transitions. Word has length 67 [2020-12-23 09:50:17,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:50:17,708 INFO L481 AbstractCegarLoop]: Abstraction has 16817 states and 22125 transitions. [2020-12-23 09:50:17,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:50:17,708 INFO L276 IsEmpty]: Start isEmpty. Operand 16817 states and 22125 transitions. [2020-12-23 09:50:17,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 09:50:17,713 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:50:17,713 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:50:17,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 09:50:17,714 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:50:17,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:50:17,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1562240835, now seen corresponding path program 1 times [2020-12-23 09:50:17,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:50:17,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657222218] [2020-12-23 09:50:17,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:50:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:17,795 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 09:50:17,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657222218] [2020-12-23 09:50:17,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:50:17,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:50:17,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308088974] [2020-12-23 09:50:17,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:50:17,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:50:17,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:50:17,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:50:17,797 INFO L87 Difference]: Start difference. First operand 16817 states and 22125 transitions. Second operand 5 states. [2020-12-23 09:50:19,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:50:19,095 INFO L93 Difference]: Finished difference Result 31498 states and 41930 transitions. [2020-12-23 09:50:19,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:50:19,096 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-12-23 09:50:19,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:50:19,134 INFO L225 Difference]: With dead ends: 31498 [2020-12-23 09:50:19,135 INFO L226 Difference]: Without dead ends: 26584 [2020-12-23 09:50:19,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:50:19,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26584 states. [2020-12-23 09:50:20,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26584 to 21441. [2020-12-23 09:50:20,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21441 states. [2020-12-23 09:50:20,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21441 states to 21441 states and 28219 transitions. [2020-12-23 09:50:20,479 INFO L78 Accepts]: Start accepts. Automaton has 21441 states and 28219 transitions. Word has length 67 [2020-12-23 09:50:20,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:50:20,479 INFO L481 AbstractCegarLoop]: Abstraction has 21441 states and 28219 transitions. [2020-12-23 09:50:20,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:50:20,479 INFO L276 IsEmpty]: Start isEmpty. Operand 21441 states and 28219 transitions. [2020-12-23 09:50:20,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 09:50:20,484 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:50:20,484 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:50:20,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 09:50:20,484 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:50:20,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:50:20,485 INFO L82 PathProgramCache]: Analyzing trace with hash -2062316443, now seen corresponding path program 1 times [2020-12-23 09:50:20,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:50:20,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701243306] [2020-12-23 09:50:20,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:50:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:20,550 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:50:20,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701243306] [2020-12-23 09:50:20,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:50:20,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:50:20,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901532573] [2020-12-23 09:50:20,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:50:20,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:50:20,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:50:20,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:50:20,553 INFO L87 Difference]: Start difference. First operand 21441 states and 28219 transitions. Second operand 6 states. [2020-12-23 09:50:22,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:50:22,043 INFO L93 Difference]: Finished difference Result 53662 states and 70442 transitions. [2020-12-23 09:50:22,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:50:22,044 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-23 09:50:22,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:50:22,090 INFO L225 Difference]: With dead ends: 53662 [2020-12-23 09:50:22,090 INFO L226 Difference]: Without dead ends: 32250 [2020-12-23 09:50:22,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 09:50:22,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32250 states. [2020-12-23 09:50:23,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32250 to 28821. [2020-12-23 09:50:23,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28821 states. [2020-12-23 09:50:23,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28821 states to 28821 states and 37367 transitions. [2020-12-23 09:50:23,683 INFO L78 Accepts]: Start accepts. Automaton has 28821 states and 37367 transitions. Word has length 67 [2020-12-23 09:50:23,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:50:23,683 INFO L481 AbstractCegarLoop]: Abstraction has 28821 states and 37367 transitions. [2020-12-23 09:50:23,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:50:23,684 INFO L276 IsEmpty]: Start isEmpty. Operand 28821 states and 37367 transitions. [2020-12-23 09:50:23,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 09:50:23,690 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:50:23,690 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:50:23,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 09:50:23,690 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:50:23,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:50:23,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1809004131, now seen corresponding path program 1 times [2020-12-23 09:50:23,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:50:23,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479227114] [2020-12-23 09:50:23,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:50:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:23,774 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 09:50:23,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479227114] [2020-12-23 09:50:23,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:50:23,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:50:23,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114800665] [2020-12-23 09:50:23,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:50:23,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:50:23,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:50:23,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:50:23,777 INFO L87 Difference]: Start difference. First operand 28821 states and 37367 transitions. Second operand 5 states. [2020-12-23 09:50:26,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:50:26,017 INFO L93 Difference]: Finished difference Result 49071 states and 64364 transitions. [2020-12-23 09:50:26,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:50:26,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-12-23 09:50:26,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:50:26,071 INFO L225 Difference]: With dead ends: 49071 [2020-12-23 09:50:26,071 INFO L226 Difference]: Without dead ends: 41940 [2020-12-23 09:50:26,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:50:26,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41940 states. [2020-12-23 09:50:28,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41940 to 34960. [2020-12-23 09:50:28,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34960 states. [2020-12-23 09:50:28,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34960 states to 34960 states and 45312 transitions. [2020-12-23 09:50:28,307 INFO L78 Accepts]: Start accepts. Automaton has 34960 states and 45312 transitions. Word has length 67 [2020-12-23 09:50:28,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:50:28,307 INFO L481 AbstractCegarLoop]: Abstraction has 34960 states and 45312 transitions. [2020-12-23 09:50:28,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:50:28,307 INFO L276 IsEmpty]: Start isEmpty. Operand 34960 states and 45312 transitions. [2020-12-23 09:50:28,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 09:50:28,312 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:50:28,313 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:50:28,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 09:50:28,313 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:50:28,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:50:28,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1321378519, now seen corresponding path program 1 times [2020-12-23 09:50:28,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:50:28,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124593496] [2020-12-23 09:50:28,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:50:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:28,398 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 09:50:28,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124593496] [2020-12-23 09:50:28,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:50:28,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:50:28,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217625693] [2020-12-23 09:50:28,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:50:28,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:50:28,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:50:28,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:50:28,401 INFO L87 Difference]: Start difference. First operand 34960 states and 45312 transitions. Second operand 5 states. [2020-12-23 09:50:31,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:50:31,147 INFO L93 Difference]: Finished difference Result 58172 states and 76145 transitions. [2020-12-23 09:50:31,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:50:31,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-12-23 09:50:31,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:50:31,195 INFO L225 Difference]: With dead ends: 58172 [2020-12-23 09:50:31,195 INFO L226 Difference]: Without dead ends: 47922 [2020-12-23 09:50:31,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:50:31,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47922 states. [2020-12-23 09:50:33,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47922 to 42190. [2020-12-23 09:50:33,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42190 states. [2020-12-23 09:50:33,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42190 states to 42190 states and 54603 transitions. [2020-12-23 09:50:33,902 INFO L78 Accepts]: Start accepts. Automaton has 42190 states and 54603 transitions. Word has length 68 [2020-12-23 09:50:33,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:50:33,902 INFO L481 AbstractCegarLoop]: Abstraction has 42190 states and 54603 transitions. [2020-12-23 09:50:33,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:50:33,902 INFO L276 IsEmpty]: Start isEmpty. Operand 42190 states and 54603 transitions. [2020-12-23 09:50:33,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-23 09:50:33,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:50:33,910 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:50:33,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 09:50:33,910 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:50:33,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:50:33,911 INFO L82 PathProgramCache]: Analyzing trace with hash -624325544, now seen corresponding path program 1 times [2020-12-23 09:50:33,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:50:33,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654098522] [2020-12-23 09:50:33,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:50:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:33,986 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:50:33,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654098522] [2020-12-23 09:50:33,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594318630] [2020-12-23 09:50:33,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:50:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:34,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 09:50:34,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:50:34,324 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:50:34,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:50:34,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-12-23 09:50:34,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392504328] [2020-12-23 09:50:34,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 09:50:34,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:50:34,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 09:50:34,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:50:34,328 INFO L87 Difference]: Start difference. First operand 42190 states and 54603 transitions. Second operand 11 states. [2020-12-23 09:50:39,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:50:39,670 INFO L93 Difference]: Finished difference Result 115537 states and 149253 transitions. [2020-12-23 09:50:39,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 09:50:39,671 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-12-23 09:50:39,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:50:39,797 INFO L225 Difference]: With dead ends: 115537 [2020-12-23 09:50:39,797 INFO L226 Difference]: Without dead ends: 87447 [2020-12-23 09:50:39,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-12-23 09:50:39,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87447 states. [2020-12-23 09:50:42,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87447 to 48660. [2020-12-23 09:50:42,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48660 states. [2020-12-23 09:50:43,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48660 states to 48660 states and 63089 transitions. [2020-12-23 09:50:43,100 INFO L78 Accepts]: Start accepts. Automaton has 48660 states and 63089 transitions. Word has length 71 [2020-12-23 09:50:43,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:50:43,101 INFO L481 AbstractCegarLoop]: Abstraction has 48660 states and 63089 transitions. [2020-12-23 09:50:43,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 09:50:43,101 INFO L276 IsEmpty]: Start isEmpty. Operand 48660 states and 63089 transitions. [2020-12-23 09:50:43,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-23 09:50:43,108 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:50:43,108 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:50:43,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 09:50:43,317 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:50:43,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:50:43,318 INFO L82 PathProgramCache]: Analyzing trace with hash -85511602, now seen corresponding path program 1 times [2020-12-23 09:50:43,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:50:43,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853655791] [2020-12-23 09:50:43,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:50:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:43,414 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:50:43,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853655791] [2020-12-23 09:50:43,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22180376] [2020-12-23 09:50:43,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:50:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:43,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 09:50:43,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:50:43,805 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:50:43,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:50:43,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-12-23 09:50:43,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161460735] [2020-12-23 09:50:43,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 09:50:43,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:50:43,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 09:50:43,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:50:43,810 INFO L87 Difference]: Start difference. First operand 48660 states and 63089 transitions. Second operand 11 states. [2020-12-23 09:50:50,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:50:50,069 INFO L93 Difference]: Finished difference Result 117761 states and 152251 transitions. [2020-12-23 09:50:50,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 09:50:50,070 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-12-23 09:50:50,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:50:50,179 INFO L225 Difference]: With dead ends: 117761 [2020-12-23 09:50:50,179 INFO L226 Difference]: Without dead ends: 84814 [2020-12-23 09:50:50,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-12-23 09:50:50,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84814 states. [2020-12-23 09:50:54,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84814 to 53957. [2020-12-23 09:50:54,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53957 states. [2020-12-23 09:50:54,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53957 states to 53957 states and 69862 transitions. [2020-12-23 09:50:54,281 INFO L78 Accepts]: Start accepts. Automaton has 53957 states and 69862 transitions. Word has length 71 [2020-12-23 09:50:54,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:50:54,281 INFO L481 AbstractCegarLoop]: Abstraction has 53957 states and 69862 transitions. [2020-12-23 09:50:54,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 09:50:54,282 INFO L276 IsEmpty]: Start isEmpty. Operand 53957 states and 69862 transitions. [2020-12-23 09:50:54,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 09:50:54,287 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:50:54,287 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:50:54,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:50:54,495 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:50:54,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:50:54,496 INFO L82 PathProgramCache]: Analyzing trace with hash 619033760, now seen corresponding path program 1 times [2020-12-23 09:50:54,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:50:54,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931792391] [2020-12-23 09:50:54,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:50:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:54,592 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:50:54,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931792391] [2020-12-23 09:50:54,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559888057] [2020-12-23 09:50:54,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:50:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:54,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 09:50:54,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:50:54,854 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:50:54,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:50:54,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-12-23 09:50:54,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119167135] [2020-12-23 09:50:54,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 09:50:54,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:50:54,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 09:50:54,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:50:54,857 INFO L87 Difference]: Start difference. First operand 53957 states and 69862 transitions. Second operand 11 states. [2020-12-23 09:51:00,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:51:00,418 INFO L93 Difference]: Finished difference Result 110580 states and 142640 transitions. [2020-12-23 09:51:00,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 09:51:00,418 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 72 [2020-12-23 09:51:00,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:51:00,493 INFO L225 Difference]: With dead ends: 110580 [2020-12-23 09:51:00,494 INFO L226 Difference]: Without dead ends: 72950 [2020-12-23 09:51:00,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-12-23 09:51:00,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72950 states. [2020-12-23 09:51:04,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72950 to 54622. [2020-12-23 09:51:04,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54622 states. [2020-12-23 09:51:04,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54622 states to 54622 states and 70473 transitions. [2020-12-23 09:51:04,593 INFO L78 Accepts]: Start accepts. Automaton has 54622 states and 70473 transitions. Word has length 72 [2020-12-23 09:51:04,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:51:04,593 INFO L481 AbstractCegarLoop]: Abstraction has 54622 states and 70473 transitions. [2020-12-23 09:51:04,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 09:51:04,593 INFO L276 IsEmpty]: Start isEmpty. Operand 54622 states and 70473 transitions. [2020-12-23 09:51:04,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 09:51:04,600 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:51:04,600 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:51:04,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:51:04,801 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:51:04,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:51:04,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1838305115, now seen corresponding path program 1 times [2020-12-23 09:51:04,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:51:04,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346790616] [2020-12-23 09:51:04,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:51:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:51:05,020 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:51:05,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346790616] [2020-12-23 09:51:05,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188505569] [2020-12-23 09:51:05,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:51:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:51:05,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 09:51:05,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:51:05,285 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 09:51:05,619 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:51:05,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:51:05,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-23 09:51:05,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65950362] [2020-12-23 09:51:05,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-23 09:51:05,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:51:05,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-23 09:51:05,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-12-23 09:51:05,621 INFO L87 Difference]: Start difference. First operand 54622 states and 70473 transitions. Second operand 17 states. [2020-12-23 09:51:08,179 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-23 09:51:17,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:51:17,355 INFO L93 Difference]: Finished difference Result 177815 states and 228189 transitions. [2020-12-23 09:51:17,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-23 09:51:17,356 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 72 [2020-12-23 09:51:17,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:51:17,548 INFO L225 Difference]: With dead ends: 177815 [2020-12-23 09:51:17,548 INFO L226 Difference]: Without dead ends: 123207 [2020-12-23 09:51:17,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=430, Invalid=1210, Unknown=0, NotChecked=0, Total=1640 [2020-12-23 09:51:17,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123207 states. [2020-12-23 09:51:23,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123207 to 70561. [2020-12-23 09:51:23,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70561 states. [2020-12-23 09:51:23,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70561 states to 70561 states and 90972 transitions. [2020-12-23 09:51:23,512 INFO L78 Accepts]: Start accepts. Automaton has 70561 states and 90972 transitions. Word has length 72 [2020-12-23 09:51:23,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:51:23,513 INFO L481 AbstractCegarLoop]: Abstraction has 70561 states and 90972 transitions. [2020-12-23 09:51:23,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-23 09:51:23,513 INFO L276 IsEmpty]: Start isEmpty. Operand 70561 states and 90972 transitions. [2020-12-23 09:51:23,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 09:51:23,518 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:51:23,519 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:51:23,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-23 09:51:23,730 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:51:23,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:51:23,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1146280427, now seen corresponding path program 1 times [2020-12-23 09:51:23,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:51:23,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67298619] [2020-12-23 09:51:23,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:51:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:51:23,948 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:51:23,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67298619] [2020-12-23 09:51:23,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534758660] [2020-12-23 09:51:23,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:51:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:51:24,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 09:51:24,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:51:24,328 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 09:51:24,748 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 34 [2020-12-23 09:51:25,170 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:51:25,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:51:25,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 21 [2020-12-23 09:51:25,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460634440] [2020-12-23 09:51:25,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-23 09:51:25,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:51:25,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-23 09:51:25,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2020-12-23 09:51:25,172 INFO L87 Difference]: Start difference. First operand 70561 states and 90972 transitions. Second operand 21 states. [2020-12-23 09:51:26,159 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-12-23 09:51:26,995 WARN L197 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-12-23 09:51:27,203 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-23 09:51:27,619 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-12-23 09:51:27,853 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-23 09:51:28,299 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-23 09:51:28,618 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-12-23 09:51:29,224 WARN L197 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-12-23 09:51:29,529 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-12-23 09:51:29,766 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-12-23 09:51:30,377 WARN L197 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-23 09:51:31,321 WARN L197 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-12-23 09:51:31,570 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-23 09:51:32,206 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-23 09:51:32,738 WARN L197 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-23 09:51:33,161 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-12-23 09:51:34,346 WARN L197 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-12-23 09:51:34,560 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-12-23 09:51:35,034 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-12-23 09:51:35,575 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-12-23 09:51:35,966 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-12-23 09:51:36,313 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-23 09:51:36,522 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-23 09:51:36,936 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2020-12-23 09:51:37,715 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-23 09:51:37,975 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-23 09:51:38,500 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-12-23 09:51:38,763 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-12-23 09:51:39,537 WARN L197 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-12-23 09:51:40,049 WARN L197 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-12-23 09:51:40,489 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-12-23 09:51:40,728 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-12-23 09:51:40,980 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-12-23 09:51:41,213 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-12-23 09:51:41,508 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-12-23 09:51:41,804 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-12-23 09:51:43,358 WARN L197 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-23 09:51:43,858 WARN L197 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-12-23 09:51:44,369 WARN L197 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-23 09:51:44,579 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-12-23 09:51:44,820 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-12-23 09:51:45,937 WARN L197 SmtUtils]: Spent 827.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2020-12-23 09:51:46,673 WARN L197 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-12-23 09:51:47,258 WARN L197 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2020-12-23 09:51:47,844 WARN L197 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-12-23 09:51:48,241 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-12-23 09:51:48,654 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-12-23 09:51:49,403 WARN L197 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2020-12-23 09:51:49,942 WARN L197 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2020-12-23 09:51:50,408 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-12-23 09:51:50,647 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-12-23 09:51:50,862 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-12-23 09:51:51,211 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2020-12-23 09:51:51,726 WARN L197 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-12-23 09:51:52,059 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-12-23 09:51:52,371 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-12-23 09:51:53,493 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-12-23 09:51:53,842 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-12-23 09:51:54,290 WARN L197 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-12-23 09:51:54,769 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-12-23 09:51:54,987 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-12-23 09:51:55,591 WARN L197 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-12-23 09:51:56,152 WARN L197 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-12-23 09:51:56,388 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-12-23 09:51:57,543 WARN L197 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-12-23 09:51:57,771 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2020-12-23 09:51:57,982 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2020-12-23 09:51:58,549 WARN L197 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2020-12-23 09:51:59,003 WARN L197 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-12-23 09:51:59,370 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-12-23 09:52:00,011 WARN L197 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2020-12-23 09:52:00,725 WARN L197 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-23 09:52:01,392 WARN L197 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-12-23 09:52:01,851 WARN L197 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-12-23 09:52:02,086 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-12-23 09:52:02,664 WARN L197 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-12-23 09:52:03,096 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-12-23 09:52:03,319 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-12-23 09:52:03,670 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-12-23 09:52:04,717 WARN L197 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-12-23 09:52:05,284 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-12-23 09:52:06,221 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-12-23 09:52:06,500 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-12-23 09:52:07,510 WARN L197 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-23 09:52:07,984 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-12-23 09:52:09,151 WARN L197 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-12-23 09:52:09,863 WARN L197 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-23 09:52:10,134 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-23 09:52:11,348 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-12-23 09:52:12,044 WARN L197 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-12-23 09:52:13,562 WARN L197 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-12-23 09:52:14,121 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-12-23 09:52:14,823 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-23 09:52:15,234 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-12-23 09:52:15,753 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-12-23 09:52:16,020 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-12-23 09:52:17,676 WARN L197 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2020-12-23 09:52:18,314 WARN L197 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-23 09:52:18,818 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-12-23 09:52:19,332 WARN L197 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-12-23 09:52:19,911 WARN L197 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-12-23 09:52:21,698 WARN L197 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-12-23 09:52:22,139 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-12-23 09:52:22,935 WARN L197 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-12-23 09:52:23,380 WARN L197 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-12-23 09:52:23,987 WARN L197 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-12-23 09:52:24,471 WARN L197 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-12-23 09:52:25,149 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-12-23 09:52:25,734 WARN L197 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-12-23 09:52:26,079 WARN L197 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-12-23 09:52:27,818 WARN L197 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-12-23 09:52:29,316 WARN L197 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-12-23 09:52:30,723 WARN L197 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2020-12-23 09:52:31,591 WARN L197 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-23 09:52:32,304 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-12-23 09:52:32,563 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2020-12-23 09:52:33,419 WARN L197 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-12-23 09:52:33,813 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-12-23 09:52:35,068 WARN L197 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-12-23 09:52:36,627 WARN L197 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-12-23 09:52:37,387 WARN L197 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-23 09:52:39,708 WARN L197 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-23 09:52:39,951 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 29 [2020-12-23 09:52:40,583 WARN L197 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-12-23 09:52:41,381 WARN L197 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-12-23 09:52:41,633 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2020-12-23 09:52:42,010 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2020-12-23 09:52:42,733 WARN L197 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-12-23 09:52:43,277 WARN L197 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-12-23 09:52:43,881 WARN L197 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-23 09:52:44,119 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2020-12-23 09:52:44,763 WARN L197 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-12-23 09:52:45,223 WARN L197 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-12-23 09:52:45,943 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-12-23 09:52:46,308 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2020-12-23 09:52:46,795 WARN L197 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-23 09:52:47,432 WARN L197 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-12-23 09:52:48,340 WARN L197 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-23 09:52:50,011 WARN L197 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-23 09:52:50,545 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-23 09:52:51,053 WARN L197 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-23 09:52:51,832 WARN L197 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-12-23 09:52:52,890 WARN L197 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-12-23 09:52:54,241 WARN L197 SmtUtils]: Spent 933.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-12-23 09:52:54,917 WARN L197 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-12-23 09:52:56,289 WARN L197 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-23 09:52:57,450 WARN L197 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-12-23 09:52:59,775 WARN L197 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-12-23 09:53:01,485 WARN L197 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-23 09:53:01,745 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2020-12-23 09:53:02,551 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-12-23 09:53:03,298 WARN L197 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-12-23 09:53:05,059 WARN L197 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-23 09:53:05,348 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-12-23 09:53:06,053 WARN L197 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-12-23 09:53:06,647 WARN L197 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-12-23 09:53:07,730 WARN L197 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-12-23 09:53:09,381 WARN L197 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2020-12-23 09:53:10,675 WARN L197 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-12-23 09:53:11,981 WARN L197 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2020-12-23 09:53:13,404 WARN L197 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-12-23 09:53:15,480 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-12-23 09:53:17,282 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2020-12-23 09:53:18,109 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2020-12-23 09:53:20,224 WARN L197 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-12-23 09:53:20,550 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-12-23 09:53:21,312 WARN L197 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-23 09:53:23,148 WARN L197 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-12-23 09:53:24,819 WARN L197 SmtUtils]: Spent 945.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-12-23 09:53:25,339 WARN L197 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-23 09:53:26,245 WARN L197 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-23 09:53:27,128 WARN L197 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-23 09:53:28,963 WARN L197 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-23 09:53:33,076 WARN L197 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-23 09:53:34,859 WARN L197 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-12-23 09:53:45,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:53:45,517 INFO L93 Difference]: Finished difference Result 386259 states and 496043 transitions. [2020-12-23 09:53:45,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 286 states. [2020-12-23 09:53:45,525 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-12-23 09:53:45,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:53:46,340 INFO L225 Difference]: With dead ends: 386259 [2020-12-23 09:53:46,341 INFO L226 Difference]: Without dead ends: 327682 [2020-12-23 09:53:46,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42245 ImplicationChecksByTransitivity, 89.4s TimeCoverageRelationStatistics Valid=9604, Invalid=82508, Unknown=0, NotChecked=0, Total=92112 [2020-12-23 09:53:46,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327682 states.