/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.5.2.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 09:52:32,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 09:52:32,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 09:52:32,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 09:52:32,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 09:52:32,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 09:52:32,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 09:52:32,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 09:52:32,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 09:52:32,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 09:52:32,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 09:52:32,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 09:52:32,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 09:52:32,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 09:52:32,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 09:52:32,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 09:52:32,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 09:52:32,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 09:52:32,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 09:52:32,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 09:52:32,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 09:52:32,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 09:52:32,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 09:52:32,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 09:52:32,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 09:52:32,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 09:52:32,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 09:52:32,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 09:52:32,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 09:52:32,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 09:52:32,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 09:52:32,502 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 09:52:32,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 09:52:32,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 09:52:32,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 09:52:32,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 09:52:32,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 09:52:32,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 09:52:32,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 09:52:32,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 09:52:32,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 09:52:32,515 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 09:52:32,546 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 09:52:32,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 09:52:32,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 09:52:32,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 09:52:32,549 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 09:52:32,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 09:52:32,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 09:52:32,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 09:52:32,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 09:52:32,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 09:52:32,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 09:52:32,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 09:52:32,551 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 09:52:32,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 09:52:32,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 09:52:32,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 09:52:32,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 09:52:32,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:52:32,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 09:52:32,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 09:52:32,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 09:52:32,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 09:52:32,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 09:52:32,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 09:52:32,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 09:52:32,553 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 09:52:32,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 09:52:32,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 09:52:32,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 09:52:32,983 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 09:52:32,985 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 09:52:32,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c [2020-12-23 09:52:33,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/52a6e912b/042bfb36715d436689adf77c71ed4186/FLAGde1057105 [2020-12-23 09:52:33,721 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 09:52:33,724 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c [2020-12-23 09:52:33,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/52a6e912b/042bfb36715d436689adf77c71ed4186/FLAGde1057105 [2020-12-23 09:52:34,042 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/52a6e912b/042bfb36715d436689adf77c71ed4186 [2020-12-23 09:52:34,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 09:52:34,056 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 09:52:34,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 09:52:34,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 09:52:34,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 09:52:34,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:52:34" (1/1) ... [2020-12-23 09:52:34,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@648e8610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:52:34, skipping insertion in model container [2020-12-23 09:52:34,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:52:34" (1/1) ... [2020-12-23 09:52:34,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 09:52:34,141 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[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_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[~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[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m5~0,] left hand side expression in assignment: lhs: VariableLHS[~m5~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,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~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[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive5~0,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[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_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[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2020-12-23 09:52:34,491 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.5.2.ufo.UNBOUNDED.pals.c[12667,12680] [2020-12-23 09:52:34,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:52:34,508 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[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_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[~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[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m5~0,] left hand side expression in assignment: lhs: VariableLHS[~m5~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,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~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[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive5~0,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[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_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[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2020-12-23 09:52:34,599 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.5.2.ufo.UNBOUNDED.pals.c[12667,12680] [2020-12-23 09:52:34,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:52:34,629 INFO L208 MainTranslator]: Completed translation [2020-12-23 09:52:34,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:52:34 WrapperNode [2020-12-23 09:52:34,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 09:52:34,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 09:52:34,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 09:52:34,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 09:52:34,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:52:34" (1/1) ... [2020-12-23 09:52:34,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:52:34" (1/1) ... [2020-12-23 09:52:34,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 09:52:34,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 09:52:34,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 09:52:34,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 09:52:34,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:52:34" (1/1) ... [2020-12-23 09:52:34,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:52:34" (1/1) ... [2020-12-23 09:52:34,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:52:34" (1/1) ... [2020-12-23 09:52:34,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:52:34" (1/1) ... [2020-12-23 09:52:34,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:52:34" (1/1) ... [2020-12-23 09:52:34,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:52:34" (1/1) ... [2020-12-23 09:52:34,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:52:34" (1/1) ... [2020-12-23 09:52:34,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 09:52:34,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 09:52:34,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 09:52:34,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 09:52:34,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:52:34" (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 09:52:34,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 09:52:34,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 09:52:34,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 09:52:34,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 09:52:35,787 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 09:52:35,788 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2020-12-23 09:52:35,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:52:35 BoogieIcfgContainer [2020-12-23 09:52:35,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 09:52:35,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 09:52:35,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 09:52:35,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 09:52:35,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:52:34" (1/3) ... [2020-12-23 09:52:35,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23dd61e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:52:35, skipping insertion in model container [2020-12-23 09:52:35,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:52:34" (2/3) ... [2020-12-23 09:52:35,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23dd61e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:52:35, skipping insertion in model container [2020-12-23 09:52:35,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:52:35" (3/3) ... [2020-12-23 09:52:35,805 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c [2020-12-23 09:52:35,816 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 09:52:35,820 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 09:52:35,842 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 09:52:35,897 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 09:52:35,897 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 09:52:35,897 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 09:52:35,898 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 09:52:35,898 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 09:52:35,898 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 09:52:35,898 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 09:52:35,898 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 09:52:35,930 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states. [2020-12-23 09:52:35,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 09:52:35,942 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:35,943 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] [2020-12-23 09:52:35,944 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:35,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:35,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1732857806, now seen corresponding path program 1 times [2020-12-23 09:52:35,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:35,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23976825] [2020-12-23 09:52:35,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:36,292 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 09:52:36,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23976825] [2020-12-23 09:52:36,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:52:36,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:52:36,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99177044] [2020-12-23 09:52:36,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 09:52:36,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:36,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 09:52:36,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 09:52:36,318 INFO L87 Difference]: Start difference. First operand 120 states. Second operand 2 states. [2020-12-23 09:52:36,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:52:36,360 INFO L93 Difference]: Finished difference Result 199 states and 331 transitions. [2020-12-23 09:52:36,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 09:52:36,362 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 33 [2020-12-23 09:52:36,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:52:36,380 INFO L225 Difference]: With dead ends: 199 [2020-12-23 09:52:36,380 INFO L226 Difference]: Without dead ends: 116 [2020-12-23 09:52:36,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 09:52:36,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-23 09:52:36,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-12-23 09:52:36,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-23 09:52:36,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 195 transitions. [2020-12-23 09:52:36,431 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 195 transitions. Word has length 33 [2020-12-23 09:52:36,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:52:36,431 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 195 transitions. [2020-12-23 09:52:36,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 09:52:36,432 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 195 transitions. [2020-12-23 09:52:36,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 09:52:36,434 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:36,434 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] [2020-12-23 09:52:36,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 09:52:36,435 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:36,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:36,436 INFO L82 PathProgramCache]: Analyzing trace with hash 2052636400, now seen corresponding path program 1 times [2020-12-23 09:52:36,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:36,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644955965] [2020-12-23 09:52:36,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:36,608 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 09:52:36,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644955965] [2020-12-23 09:52:36,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:52:36,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:52:36,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042167938] [2020-12-23 09:52:36,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:52:36,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:36,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:52:36,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:52:36,615 INFO L87 Difference]: Start difference. First operand 116 states and 195 transitions. Second operand 5 states. [2020-12-23 09:52:36,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:52:36,791 INFO L93 Difference]: Finished difference Result 198 states and 324 transitions. [2020-12-23 09:52:36,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:52:36,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-12-23 09:52:36,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:52:36,794 INFO L225 Difference]: With dead ends: 198 [2020-12-23 09:52:36,794 INFO L226 Difference]: Without dead ends: 116 [2020-12-23 09:52:36,795 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 09:52:36,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-23 09:52:36,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-12-23 09:52:36,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-23 09:52:36,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 163 transitions. [2020-12-23 09:52:36,808 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 163 transitions. Word has length 33 [2020-12-23 09:52:36,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:52:36,809 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 163 transitions. [2020-12-23 09:52:36,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:52:36,809 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 163 transitions. [2020-12-23 09:52:36,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 09:52:36,811 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:36,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:52:36,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 09:52:36,812 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:36,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:36,813 INFO L82 PathProgramCache]: Analyzing trace with hash 148306117, now seen corresponding path program 1 times [2020-12-23 09:52:36,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:36,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171170093] [2020-12-23 09:52:36,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:36,962 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 09:52:36,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171170093] [2020-12-23 09:52:36,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:52:36,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:52:36,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380177314] [2020-12-23 09:52:36,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:52:36,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:36,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:52:36,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:52:36,966 INFO L87 Difference]: Start difference. First operand 116 states and 163 transitions. Second operand 3 states. [2020-12-23 09:52:37,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:52:37,003 INFO L93 Difference]: Finished difference Result 260 states and 393 transitions. [2020-12-23 09:52:37,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:52:37,005 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-23 09:52:37,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:52:37,008 INFO L225 Difference]: With dead ends: 260 [2020-12-23 09:52:37,011 INFO L226 Difference]: Without dead ends: 182 [2020-12-23 09:52:37,012 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 09:52:37,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-12-23 09:52:37,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 180. [2020-12-23 09:52:37,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-12-23 09:52:37,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 266 transitions. [2020-12-23 09:52:37,046 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 266 transitions. Word has length 64 [2020-12-23 09:52:37,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:52:37,047 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 266 transitions. [2020-12-23 09:52:37,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:52:37,047 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 266 transitions. [2020-12-23 09:52:37,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 09:52:37,051 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:37,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:52:37,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 09:52:37,051 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:37,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:37,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1747202786, now seen corresponding path program 1 times [2020-12-23 09:52:37,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:37,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679888137] [2020-12-23 09:52:37,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:37,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:52:37,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679888137] [2020-12-23 09:52:37,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:52:37,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:52:37,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331954038] [2020-12-23 09:52:37,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:52:37,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:37,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:52:37,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:52:37,211 INFO L87 Difference]: Start difference. First operand 180 states and 266 transitions. Second operand 3 states. [2020-12-23 09:52:37,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:52:37,244 INFO L93 Difference]: Finished difference Result 440 states and 682 transitions. [2020-12-23 09:52:37,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:52:37,247 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-23 09:52:37,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:52:37,253 INFO L225 Difference]: With dead ends: 440 [2020-12-23 09:52:37,253 INFO L226 Difference]: Without dead ends: 298 [2020-12-23 09:52:37,256 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 09:52:37,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-23 09:52:37,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 296. [2020-12-23 09:52:37,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-12-23 09:52:37,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 451 transitions. [2020-12-23 09:52:37,309 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 451 transitions. Word has length 65 [2020-12-23 09:52:37,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:52:37,314 INFO L481 AbstractCegarLoop]: Abstraction has 296 states and 451 transitions. [2020-12-23 09:52:37,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:52:37,314 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 451 transitions. [2020-12-23 09:52:37,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-23 09:52:37,316 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:37,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:52:37,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 09:52:37,319 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:37,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:37,320 INFO L82 PathProgramCache]: Analyzing trace with hash 378408053, now seen corresponding path program 1 times [2020-12-23 09:52:37,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:37,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777103718] [2020-12-23 09:52:37,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:37,507 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 09:52:37,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777103718] [2020-12-23 09:52:37,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:52:37,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:52:37,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587548942] [2020-12-23 09:52:37,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:52:37,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:37,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:52:37,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:52:37,511 INFO L87 Difference]: Start difference. First operand 296 states and 451 transitions. Second operand 3 states. [2020-12-23 09:52:37,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:52:37,550 INFO L93 Difference]: Finished difference Result 764 states and 1197 transitions. [2020-12-23 09:52:37,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:52:37,551 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-23 09:52:37,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:52:37,554 INFO L225 Difference]: With dead ends: 764 [2020-12-23 09:52:37,555 INFO L226 Difference]: Without dead ends: 506 [2020-12-23 09:52:37,556 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 09:52:37,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-12-23 09:52:37,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 504. [2020-12-23 09:52:37,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2020-12-23 09:52:37,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 779 transitions. [2020-12-23 09:52:37,583 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 779 transitions. Word has length 66 [2020-12-23 09:52:37,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:52:37,584 INFO L481 AbstractCegarLoop]: Abstraction has 504 states and 779 transitions. [2020-12-23 09:52:37,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:52:37,584 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 779 transitions. [2020-12-23 09:52:37,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 09:52:37,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:37,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:52:37,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 09:52:37,586 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:37,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:37,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1350891378, now seen corresponding path program 1 times [2020-12-23 09:52:37,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:37,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555672020] [2020-12-23 09:52:37,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:37,699 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 09:52:37,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555672020] [2020-12-23 09:52:37,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:52:37,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:52:37,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213262512] [2020-12-23 09:52:37,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:52:37,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:37,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:52:37,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:52:37,702 INFO L87 Difference]: Start difference. First operand 504 states and 779 transitions. Second operand 3 states. [2020-12-23 09:52:37,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:52:37,745 INFO L93 Difference]: Finished difference Result 1340 states and 2101 transitions. [2020-12-23 09:52:37,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:52:37,746 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-23 09:52:37,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:52:37,752 INFO L225 Difference]: With dead ends: 1340 [2020-12-23 09:52:37,752 INFO L226 Difference]: Without dead ends: 874 [2020-12-23 09:52:37,753 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 09:52:37,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2020-12-23 09:52:37,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 872. [2020-12-23 09:52:37,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2020-12-23 09:52:37,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1351 transitions. [2020-12-23 09:52:37,787 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1351 transitions. Word has length 67 [2020-12-23 09:52:37,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:52:37,787 INFO L481 AbstractCegarLoop]: Abstraction has 872 states and 1351 transitions. [2020-12-23 09:52:37,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:52:37,788 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1351 transitions. [2020-12-23 09:52:37,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 09:52:37,789 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:37,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:52:37,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 09:52:37,790 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:37,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:37,790 INFO L82 PathProgramCache]: Analyzing trace with hash 644065317, now seen corresponding path program 1 times [2020-12-23 09:52:37,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:37,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219902181] [2020-12-23 09:52:37,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:37,906 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 09:52:37,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219902181] [2020-12-23 09:52:37,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:52:37,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:52:37,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817936042] [2020-12-23 09:52:37,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:52:37,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:37,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:52:37,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:52:37,909 INFO L87 Difference]: Start difference. First operand 872 states and 1351 transitions. Second operand 7 states. [2020-12-23 09:52:38,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:52:38,290 INFO L93 Difference]: Finished difference Result 5876 states and 9229 transitions. [2020-12-23 09:52:38,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:52:38,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-12-23 09:52:38,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:52:38,334 INFO L225 Difference]: With dead ends: 5876 [2020-12-23 09:52:38,335 INFO L226 Difference]: Without dead ends: 5042 [2020-12-23 09:52:38,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:52:38,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5042 states. [2020-12-23 09:52:38,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5042 to 1704. [2020-12-23 09:52:38,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1704 states. [2020-12-23 09:52:38,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2631 transitions. [2020-12-23 09:52:38,496 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2631 transitions. Word has length 68 [2020-12-23 09:52:38,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:52:38,498 INFO L481 AbstractCegarLoop]: Abstraction has 1704 states and 2631 transitions. [2020-12-23 09:52:38,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:52:38,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2631 transitions. [2020-12-23 09:52:38,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 09:52:38,503 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:38,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:52:38,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 09:52:38,504 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:38,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:38,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1892134872, now seen corresponding path program 1 times [2020-12-23 09:52:38,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:38,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582879573] [2020-12-23 09:52:38,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:38,788 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 09:52:38,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582879573] [2020-12-23 09:52:38,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:52:38,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:52:38,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673647413] [2020-12-23 09:52:38,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:52:38,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:38,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:52:38,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:52:38,792 INFO L87 Difference]: Start difference. First operand 1704 states and 2631 transitions. Second operand 7 states. [2020-12-23 09:52:39,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:52:39,390 INFO L93 Difference]: Finished difference Result 9202 states and 14156 transitions. [2020-12-23 09:52:39,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:52:39,391 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-12-23 09:52:39,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:52:39,438 INFO L225 Difference]: With dead ends: 9202 [2020-12-23 09:52:39,439 INFO L226 Difference]: Without dead ends: 7536 [2020-12-23 09:52:39,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:52:39,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7536 states. [2020-12-23 09:52:40,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7536 to 7528. [2020-12-23 09:52:40,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7528 states. [2020-12-23 09:52:40,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7528 states to 7528 states and 11527 transitions. [2020-12-23 09:52:40,048 INFO L78 Accepts]: Start accepts. Automaton has 7528 states and 11527 transitions. Word has length 69 [2020-12-23 09:52:40,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:52:40,049 INFO L481 AbstractCegarLoop]: Abstraction has 7528 states and 11527 transitions. [2020-12-23 09:52:40,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:52:40,049 INFO L276 IsEmpty]: Start isEmpty. Operand 7528 states and 11527 transitions. [2020-12-23 09:52:40,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-23 09:52:40,057 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:40,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:52:40,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 09:52:40,058 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:40,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:40,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1491011308, now seen corresponding path program 1 times [2020-12-23 09:52:40,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:40,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624784385] [2020-12-23 09:52:40,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:40,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:52:40,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624784385] [2020-12-23 09:52:40,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:52:40,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 09:52:40,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413161651] [2020-12-23 09:52:40,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 09:52:40,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:40,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 09:52:40,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:52:40,266 INFO L87 Difference]: Start difference. First operand 7528 states and 11527 transitions. Second operand 8 states. [2020-12-23 09:52:41,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:52:41,577 INFO L93 Difference]: Finished difference Result 15658 states and 23656 transitions. [2020-12-23 09:52:41,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 09:52:41,578 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-12-23 09:52:41,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:52:41,672 INFO L225 Difference]: With dead ends: 15658 [2020-12-23 09:52:41,672 INFO L226 Difference]: Without dead ends: 15656 [2020-12-23 09:52:41,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-23 09:52:41,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15656 states. [2020-12-23 09:52:42,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15656 to 8008. [2020-12-23 09:52:42,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8008 states. [2020-12-23 09:52:42,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8008 states to 8008 states and 12007 transitions. [2020-12-23 09:52:42,391 INFO L78 Accepts]: Start accepts. Automaton has 8008 states and 12007 transitions. Word has length 70 [2020-12-23 09:52:42,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:52:42,392 INFO L481 AbstractCegarLoop]: Abstraction has 8008 states and 12007 transitions. [2020-12-23 09:52:42,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 09:52:42,392 INFO L276 IsEmpty]: Start isEmpty. Operand 8008 states and 12007 transitions. [2020-12-23 09:52:42,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-23 09:52:42,394 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:42,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:52:42,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 09:52:42,395 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:42,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:42,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1075868401, now seen corresponding path program 1 times [2020-12-23 09:52:42,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:42,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499442283] [2020-12-23 09:52:42,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:42,547 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 09:52:42,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499442283] [2020-12-23 09:52:42,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:52:42,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:52:42,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945382313] [2020-12-23 09:52:42,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:52:42,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:42,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:52:42,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:52:42,552 INFO L87 Difference]: Start difference. First operand 8008 states and 12007 transitions. Second operand 3 states. [2020-12-23 09:52:43,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:52:43,649 INFO L93 Difference]: Finished difference Result 22092 states and 32985 transitions. [2020-12-23 09:52:43,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:52:43,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-23 09:52:43,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:52:43,689 INFO L225 Difference]: With dead ends: 22092 [2020-12-23 09:52:43,689 INFO L226 Difference]: Without dead ends: 14122 [2020-12-23 09:52:43,702 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 09:52:43,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14122 states. [2020-12-23 09:52:44,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14122 to 13976. [2020-12-23 09:52:44,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13976 states. [2020-12-23 09:52:44,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13976 states to 13976 states and 20583 transitions. [2020-12-23 09:52:44,778 INFO L78 Accepts]: Start accepts. Automaton has 13976 states and 20583 transitions. Word has length 71 [2020-12-23 09:52:44,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:52:44,778 INFO L481 AbstractCegarLoop]: Abstraction has 13976 states and 20583 transitions. [2020-12-23 09:52:44,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:52:44,779 INFO L276 IsEmpty]: Start isEmpty. Operand 13976 states and 20583 transitions. [2020-12-23 09:52:44,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 09:52:44,780 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:44,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:52:44,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 09:52:44,781 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:44,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:44,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1119250846, now seen corresponding path program 1 times [2020-12-23 09:52:44,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:44,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761793003] [2020-12-23 09:52:44,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:44,830 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 09:52:44,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761793003] [2020-12-23 09:52:44,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:52:44,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:52:44,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606368352] [2020-12-23 09:52:44,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:52:44,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:44,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:52:44,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:52:44,833 INFO L87 Difference]: Start difference. First operand 13976 states and 20583 transitions. Second operand 3 states. [2020-12-23 09:52:46,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:52:46,218 INFO L93 Difference]: Finished difference Result 28159 states and 41645 transitions. [2020-12-23 09:52:46,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:52:46,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-23 09:52:46,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:52:46,298 INFO L225 Difference]: With dead ends: 28159 [2020-12-23 09:52:46,299 INFO L226 Difference]: Without dead ends: 20188 [2020-12-23 09:52:46,322 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 09:52:46,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20188 states. [2020-12-23 09:52:47,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20188 to 20186. [2020-12-23 09:52:47,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20186 states. [2020-12-23 09:52:47,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20186 states to 20186 states and 29513 transitions. [2020-12-23 09:52:47,880 INFO L78 Accepts]: Start accepts. Automaton has 20186 states and 29513 transitions. Word has length 72 [2020-12-23 09:52:47,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:52:47,880 INFO L481 AbstractCegarLoop]: Abstraction has 20186 states and 29513 transitions. [2020-12-23 09:52:47,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:52:47,880 INFO L276 IsEmpty]: Start isEmpty. Operand 20186 states and 29513 transitions. [2020-12-23 09:52:47,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-23 09:52:47,892 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:47,893 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:52:47,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 09:52:47,893 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:47,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:47,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1605278621, now seen corresponding path program 1 times [2020-12-23 09:52:47,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:47,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576335277] [2020-12-23 09:52:47,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:47,961 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:52:47,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576335277] [2020-12-23 09:52:47,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:52:47,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:52:47,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089690219] [2020-12-23 09:52:47,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:52:47,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:47,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:52:47,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:52:47,963 INFO L87 Difference]: Start difference. First operand 20186 states and 29513 transitions. Second operand 3 states. [2020-12-23 09:52:49,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:52:49,477 INFO L93 Difference]: Finished difference Result 50789 states and 74133 transitions. [2020-12-23 09:52:49,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:52:49,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-12-23 09:52:49,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:52:49,654 INFO L225 Difference]: With dead ends: 50789 [2020-12-23 09:52:49,654 INFO L226 Difference]: Without dead ends: 33891 [2020-12-23 09:52:49,713 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 09:52:49,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33891 states. [2020-12-23 09:52:51,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33891 to 32545. [2020-12-23 09:52:51,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32545 states. [2020-12-23 09:52:51,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32545 states to 32545 states and 47083 transitions. [2020-12-23 09:52:51,878 INFO L78 Accepts]: Start accepts. Automaton has 32545 states and 47083 transitions. Word has length 98 [2020-12-23 09:52:51,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:52:51,878 INFO L481 AbstractCegarLoop]: Abstraction has 32545 states and 47083 transitions. [2020-12-23 09:52:51,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:52:51,878 INFO L276 IsEmpty]: Start isEmpty. Operand 32545 states and 47083 transitions. [2020-12-23 09:52:51,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-23 09:52:51,905 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:51,905 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:52:51,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 09:52:51,906 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:51,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:51,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1583207469, now seen corresponding path program 1 times [2020-12-23 09:52:51,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:51,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571782175] [2020-12-23 09:52:51,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:52,196 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 09:52:52,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571782175] [2020-12-23 09:52:52,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:52:52,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:52:52,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425055917] [2020-12-23 09:52:52,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:52:52,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:52,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:52:52,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:52:52,200 INFO L87 Difference]: Start difference. First operand 32545 states and 47083 transitions. Second operand 7 states. [2020-12-23 09:52:55,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:52:55,050 INFO L93 Difference]: Finished difference Result 80293 states and 117329 transitions. [2020-12-23 09:52:55,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:52:55,051 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-12-23 09:52:55,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:52:55,270 INFO L225 Difference]: With dead ends: 80293 [2020-12-23 09:52:55,271 INFO L226 Difference]: Without dead ends: 67691 [2020-12-23 09:52:55,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:52:55,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67691 states. [2020-12-23 09:52:57,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67691 to 44857. [2020-12-23 09:52:57,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44857 states. [2020-12-23 09:52:57,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44857 states to 44857 states and 64891 transitions. [2020-12-23 09:52:57,866 INFO L78 Accepts]: Start accepts. Automaton has 44857 states and 64891 transitions. Word has length 98 [2020-12-23 09:52:57,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:52:57,866 INFO L481 AbstractCegarLoop]: Abstraction has 44857 states and 64891 transitions. [2020-12-23 09:52:57,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:52:57,867 INFO L276 IsEmpty]: Start isEmpty. Operand 44857 states and 64891 transitions. [2020-12-23 09:52:57,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-23 09:52:57,889 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:52:57,889 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:52:57,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 09:52:57,890 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:52:57,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:52:57,890 INFO L82 PathProgramCache]: Analyzing trace with hash 102749373, now seen corresponding path program 1 times [2020-12-23 09:52:57,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:52:57,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729087428] [2020-12-23 09:52:57,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:52:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:52:57,954 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:52:57,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729087428] [2020-12-23 09:52:57,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:52:57,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:52:57,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618555072] [2020-12-23 09:52:57,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:52:57,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:52:57,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:52:57,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:52:57,957 INFO L87 Difference]: Start difference. First operand 44857 states and 64891 transitions. Second operand 3 states. [2020-12-23 09:53:00,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:53:00,627 INFO L93 Difference]: Finished difference Result 89059 states and 128690 transitions. [2020-12-23 09:53:00,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:53:00,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-12-23 09:53:00,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:53:00,738 INFO L225 Difference]: With dead ends: 89059 [2020-12-23 09:53:00,739 INFO L226 Difference]: Without dead ends: 63665 [2020-12-23 09:53:00,775 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 09:53:00,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63665 states. [2020-12-23 09:53:03,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63665 to 58539. [2020-12-23 09:53:03,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58539 states. [2020-12-23 09:53:03,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58539 states to 58539 states and 83784 transitions. [2020-12-23 09:53:03,749 INFO L78 Accepts]: Start accepts. Automaton has 58539 states and 83784 transitions. Word has length 98 [2020-12-23 09:53:03,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:53:03,749 INFO L481 AbstractCegarLoop]: Abstraction has 58539 states and 83784 transitions. [2020-12-23 09:53:03,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:53:03,749 INFO L276 IsEmpty]: Start isEmpty. Operand 58539 states and 83784 transitions. [2020-12-23 09:53:03,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-23 09:53:03,773 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:53:03,773 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:53:03,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 09:53:03,774 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:53:03,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:53:03,774 INFO L82 PathProgramCache]: Analyzing trace with hash 530095437, now seen corresponding path program 1 times [2020-12-23 09:53:03,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:53:03,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399269632] [2020-12-23 09:53:03,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:53:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:53:03,842 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:53:03,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399269632] [2020-12-23 09:53:03,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:53:03,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:53:03,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204167577] [2020-12-23 09:53:03,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:53:03,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:53:03,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:53:03,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:53:03,844 INFO L87 Difference]: Start difference. First operand 58539 states and 83784 transitions. Second operand 3 states. [2020-12-23 09:53:06,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:53:06,654 INFO L93 Difference]: Finished difference Result 92892 states and 132304 transitions. [2020-12-23 09:53:06,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:53:06,654 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-12-23 09:53:06,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:53:06,769 INFO L225 Difference]: With dead ends: 92892 [2020-12-23 09:53:06,769 INFO L226 Difference]: Without dead ends: 62282 [2020-12-23 09:53:06,808 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 09:53:06,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62282 states. [2020-12-23 09:53:09,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62282 to 59356. [2020-12-23 09:53:09,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59356 states. [2020-12-23 09:53:09,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59356 states to 59356 states and 83561 transitions. [2020-12-23 09:53:09,812 INFO L78 Accepts]: Start accepts. Automaton has 59356 states and 83561 transitions. Word has length 98 [2020-12-23 09:53:09,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:53:09,813 INFO L481 AbstractCegarLoop]: Abstraction has 59356 states and 83561 transitions. [2020-12-23 09:53:09,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:53:09,813 INFO L276 IsEmpty]: Start isEmpty. Operand 59356 states and 83561 transitions. [2020-12-23 09:53:09,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-23 09:53:09,837 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:53:09,837 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:53:09,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 09:53:09,838 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:53:09,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:53:09,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1459061363, now seen corresponding path program 1 times [2020-12-23 09:53:09,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:53:09,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358637155] [2020-12-23 09:53:09,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:53:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:53:09,959 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-23 09:53:09,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358637155] [2020-12-23 09:53:09,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:53:09,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:53:09,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502581198] [2020-12-23 09:53:09,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:53:09,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:53:09,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:53:09,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:53:09,962 INFO L87 Difference]: Start difference. First operand 59356 states and 83561 transitions. Second operand 7 states. [2020-12-23 09:53:14,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:53:14,106 INFO L93 Difference]: Finished difference Result 115214 states and 164114 transitions. [2020-12-23 09:53:14,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:53:14,109 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-12-23 09:53:14,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:53:14,278 INFO L225 Difference]: With dead ends: 115214 [2020-12-23 09:53:14,278 INFO L226 Difference]: Without dead ends: 106764 [2020-12-23 09:53:14,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:53:14,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106764 states. [2020-12-23 09:53:17,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106764 to 67612. [2020-12-23 09:53:17,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67612 states. [2020-12-23 09:53:17,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67612 states to 67612 states and 95305 transitions. [2020-12-23 09:53:17,479 INFO L78 Accepts]: Start accepts. Automaton has 67612 states and 95305 transitions. Word has length 98 [2020-12-23 09:53:17,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:53:17,480 INFO L481 AbstractCegarLoop]: Abstraction has 67612 states and 95305 transitions. [2020-12-23 09:53:17,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:53:17,480 INFO L276 IsEmpty]: Start isEmpty. Operand 67612 states and 95305 transitions. [2020-12-23 09:53:17,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-23 09:53:17,500 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:53:17,500 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:53:17,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 09:53:17,501 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:53:17,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:53:17,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1675071005, now seen corresponding path program 1 times [2020-12-23 09:53:17,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:53:17,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834778935] [2020-12-23 09:53:17,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:53:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:53:17,615 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-23 09:53:17,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834778935] [2020-12-23 09:53:17,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:53:17,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:53:17,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333875351] [2020-12-23 09:53:17,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:53:17,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:53:17,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:53:17,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:53:17,617 INFO L87 Difference]: Start difference. First operand 67612 states and 95305 transitions. Second operand 7 states. [2020-12-23 09:53:22,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:53:22,814 INFO L93 Difference]: Finished difference Result 127601 states and 181810 transitions. [2020-12-23 09:53:22,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:53:22,815 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-12-23 09:53:22,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:53:22,956 INFO L225 Difference]: With dead ends: 127601 [2020-12-23 09:53:22,956 INFO L226 Difference]: Without dead ends: 114913 [2020-12-23 09:53:22,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:53:23,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114913 states. [2020-12-23 09:53:27,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114913 to 79972. [2020-12-23 09:53:27,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79972 states. [2020-12-23 09:53:27,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79972 states to 79972 states and 112857 transitions. [2020-12-23 09:53:27,189 INFO L78 Accepts]: Start accepts. Automaton has 79972 states and 112857 transitions. Word has length 98 [2020-12-23 09:53:27,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:53:27,190 INFO L481 AbstractCegarLoop]: Abstraction has 79972 states and 112857 transitions. [2020-12-23 09:53:27,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:53:27,190 INFO L276 IsEmpty]: Start isEmpty. Operand 79972 states and 112857 transitions. [2020-12-23 09:53:27,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-23 09:53:27,207 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:53:27,208 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:53:27,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 09:53:27,208 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:53:27,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:53:27,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1191506179, now seen corresponding path program 1 times [2020-12-23 09:53:27,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:53:27,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921603031] [2020-12-23 09:53:27,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:53:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:53:27,323 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 09:53:27,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921603031] [2020-12-23 09:53:27,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:53:27,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:53:27,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017775844] [2020-12-23 09:53:27,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:53:27,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:53:27,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:53:27,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:53:27,326 INFO L87 Difference]: Start difference. First operand 79972 states and 112857 transitions. Second operand 7 states. [2020-12-23 09:53:33,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:53:33,433 INFO L93 Difference]: Finished difference Result 151956 states and 216207 transitions. [2020-12-23 09:53:33,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:53:33,433 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-12-23 09:53:33,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:53:33,641 INFO L225 Difference]: With dead ends: 151956 [2020-12-23 09:53:33,641 INFO L226 Difference]: Without dead ends: 132131 [2020-12-23 09:53:33,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:53:33,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132131 states. [2020-12-23 09:53:38,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132131 to 96177. [2020-12-23 09:53:38,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96177 states. [2020-12-23 09:53:39,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96177 states to 96177 states and 135714 transitions. [2020-12-23 09:53:39,013 INFO L78 Accepts]: Start accepts. Automaton has 96177 states and 135714 transitions. Word has length 98 [2020-12-23 09:53:39,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:53:39,013 INFO L481 AbstractCegarLoop]: Abstraction has 96177 states and 135714 transitions. [2020-12-23 09:53:39,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:53:39,013 INFO L276 IsEmpty]: Start isEmpty. Operand 96177 states and 135714 transitions. [2020-12-23 09:53:39,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-23 09:53:39,041 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:53:39,042 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:53:39,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 09:53:39,042 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:53:39,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:53:39,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1676232259, now seen corresponding path program 1 times [2020-12-23 09:53:39,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:53:39,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559519735] [2020-12-23 09:53:39,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:53:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:53:39,347 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:53:39,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559519735] [2020-12-23 09:53:39,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129074642] [2020-12-23 09:53:39,348 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 09:53:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:53:39,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 09:53:39,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:53:39,920 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 09:53:39,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:53:39,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2020-12-23 09:53:39,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981593236] [2020-12-23 09:53:39,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 09:53:39,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:53:39,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 09:53:39,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-12-23 09:53:39,923 INFO L87 Difference]: Start difference. First operand 96177 states and 135714 transitions. Second operand 12 states. [2020-12-23 09:53:40,952 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 25 [2020-12-23 09:54:32,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:54:32,503 INFO L93 Difference]: Finished difference Result 972608 states and 1361932 transitions. [2020-12-23 09:54:32,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-12-23 09:54:32,503 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2020-12-23 09:54:32,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:54:34,737 INFO L225 Difference]: With dead ends: 972608 [2020-12-23 09:54:34,737 INFO L226 Difference]: Without dead ends: 876238 [2020-12-23 09:54:35,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2000 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1013, Invalid=4389, Unknown=0, NotChecked=0, Total=5402