/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.6.ufo.BOUNDED-12.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 19:46:49,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 19:46:49,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 19:46:49,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 19:46:49,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 19:46:49,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 19:46:49,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 19:46:49,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 19:46:49,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 19:46:49,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 19:46:49,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 19:46:49,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 19:46:49,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 19:46:49,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 19:46:49,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 19:46:49,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 19:46:49,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 19:46:49,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 19:46:49,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 19:46:49,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 19:46:49,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 19:46:49,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 19:46:49,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 19:46:49,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 19:46:49,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 19:46:49,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 19:46:49,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 19:46:49,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 19:46:49,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 19:46:49,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 19:46:49,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 19:46:49,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 19:46:49,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 19:46:49,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 19:46:49,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 19:46:49,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 19:46:49,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 19:46:49,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 19:46:49,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 19:46:49,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 19:46:49,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 19:46:49,642 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 19:46:49,687 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 19:46:49,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 19:46:49,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 19:46:49,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 19:46:49,692 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 19:46:49,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 19:46:49,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 19:46:49,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 19:46:49,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 19:46:49,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 19:46:49,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 19:46:49,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 19:46:49,695 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 19:46:49,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 19:46:49,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 19:46:49,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 19:46:49,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 19:46:49,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 19:46:49,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 19:46:49,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 19:46:49,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 19:46:49,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 19:46:49,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 19:46:49,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 19:46:49,698 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 19:46:49,698 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 19:46:50,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 19:46:50,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 19:46:50,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 19:46:50,200 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 19:46:50,201 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 19:46:50,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c [2021-01-06 19:46:50,292 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5b3af515d/6f94bbb367bb4885a8cd1e8cddcb24bb/FLAGa2b8e5f4e [2021-01-06 19:46:51,046 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 19:46:51,047 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c [2021-01-06 19:46:51,072 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5b3af515d/6f94bbb367bb4885a8cd1e8cddcb24bb/FLAGa2b8e5f4e [2021-01-06 19:46:51,313 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5b3af515d/6f94bbb367bb4885a8cd1e8cddcb24bb [2021-01-06 19:46:51,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 19:46:51,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 19:46:51,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 19:46:51,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 19:46:51,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 19:46:51,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:46:51" (1/1) ... [2021-01-06 19:46:51,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b3477d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:46:51, skipping insertion in model container [2021-01-06 19:46:51,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:46:51" (1/1) ... [2021-01-06 19:46:51,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 19:46:51,403 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~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[~m6~0,] left hand side expression in assignment: lhs: VariableLHS[~m6~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,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~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[~id6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive6~0,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[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_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[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2021-01-06 19:46:51,770 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.6.ufo.BOUNDED-12.pals.c[16936,16949] [2021-01-06 19:46:51,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:46:51,785 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~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[~m6~0,] left hand side expression in assignment: lhs: VariableLHS[~m6~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,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~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[~id6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive6~0,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[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_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[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2021-01-06 19:46:51,946 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.6.ufo.BOUNDED-12.pals.c[16936,16949] [2021-01-06 19:46:51,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:46:51,973 INFO L208 MainTranslator]: Completed translation [2021-01-06 19:46:51,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:46:51 WrapperNode [2021-01-06 19:46:51,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 19:46:51,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 19:46:51,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 19:46:51,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 19:46:51,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:46:51" (1/1) ... [2021-01-06 19:46:52,021 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:46:51" (1/1) ... [2021-01-06 19:46:52,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 19:46:52,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 19:46:52,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 19:46:52,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 19:46:52,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:46:51" (1/1) ... [2021-01-06 19:46:52,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:46:51" (1/1) ... [2021-01-06 19:46:52,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:46:51" (1/1) ... [2021-01-06 19:46:52,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:46:51" (1/1) ... [2021-01-06 19:46:52,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:46:51" (1/1) ... [2021-01-06 19:46:52,153 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:46:51" (1/1) ... [2021-01-06 19:46:52,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:46:51" (1/1) ... [2021-01-06 19:46:52,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 19:46:52,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 19:46:52,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 19:46:52,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 19:46:52,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:46:51" (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 [2021-01-06 19:46:52,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 19:46:52,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 19:46:52,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 19:46:52,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 19:46:53,204 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 19:46:53,205 INFO L299 CfgBuilder]: Removed 25 assume(true) statements. [2021-01-06 19:46:53,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:46:53 BoogieIcfgContainer [2021-01-06 19:46:53,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 19:46:53,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 19:46:53,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 19:46:53,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 19:46:53,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 07:46:51" (1/3) ... [2021-01-06 19:46:53,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20de79f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:46:53, skipping insertion in model container [2021-01-06 19:46:53,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:46:51" (2/3) ... [2021-01-06 19:46:53,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20de79f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:46:53, skipping insertion in model container [2021-01-06 19:46:53,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:46:53" (3/3) ... [2021-01-06 19:46:53,222 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c [2021-01-06 19:46:53,229 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 19:46:53,238 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 19:46:53,259 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 19:46:53,287 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 19:46:53,287 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 19:46:53,287 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 19:46:53,288 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 19:46:53,288 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 19:46:53,288 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 19:46:53,288 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 19:46:53,288 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 19:46:53,307 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states. [2021-01-06 19:46:53,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 19:46:53,316 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:53,317 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] [2021-01-06 19:46:53,318 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:53,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:53,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1929732074, now seen corresponding path program 1 times [2021-01-06 19:46:53,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:53,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85426413] [2021-01-06 19:46:53,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:53,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:53,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85426413] [2021-01-06 19:46:53,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:53,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:46:53,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240536710] [2021-01-06 19:46:53,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:46:53,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:53,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:46:53,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:46:53,848 INFO L87 Difference]: Start difference. First operand 145 states. Second operand 5 states. [2021-01-06 19:46:54,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:54,049 INFO L93 Difference]: Finished difference Result 247 states and 408 transitions. [2021-01-06 19:46:54,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:46:54,051 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2021-01-06 19:46:54,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:54,070 INFO L225 Difference]: With dead ends: 247 [2021-01-06 19:46:54,070 INFO L226 Difference]: Without dead ends: 141 [2021-01-06 19:46:54,075 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 [2021-01-06 19:46:54,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-01-06 19:46:54,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-01-06 19:46:54,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2021-01-06 19:46:54,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 198 transitions. [2021-01-06 19:46:54,149 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 198 transitions. Word has length 37 [2021-01-06 19:46:54,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:54,150 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 198 transitions. [2021-01-06 19:46:54,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:46:54,150 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 198 transitions. [2021-01-06 19:46:54,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-01-06 19:46:54,161 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:54,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:46:54,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 19:46:54,162 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:54,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:54,163 INFO L82 PathProgramCache]: Analyzing trace with hash -2008203596, now seen corresponding path program 1 times [2021-01-06 19:46:54,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:54,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240520859] [2021-01-06 19:46:54,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:54,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:54,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240520859] [2021-01-06 19:46:54,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:54,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:46:54,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501935618] [2021-01-06 19:46:54,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:46:54,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:54,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:46:54,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:54,473 INFO L87 Difference]: Start difference. First operand 141 states and 198 transitions. Second operand 3 states. [2021-01-06 19:46:54,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:54,520 INFO L93 Difference]: Finished difference Result 317 states and 480 transitions. [2021-01-06 19:46:54,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:46:54,521 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2021-01-06 19:46:54,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:54,527 INFO L225 Difference]: With dead ends: 317 [2021-01-06 19:46:54,528 INFO L226 Difference]: Without dead ends: 223 [2021-01-06 19:46:54,531 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 [2021-01-06 19:46:54,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-01-06 19:46:54,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2021-01-06 19:46:54,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2021-01-06 19:46:54,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 327 transitions. [2021-01-06 19:46:54,566 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 327 transitions. Word has length 77 [2021-01-06 19:46:54,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:54,567 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 327 transitions. [2021-01-06 19:46:54,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:46:54,568 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 327 transitions. [2021-01-06 19:46:54,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-01-06 19:46:54,572 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:54,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:46:54,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 19:46:54,573 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:54,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:54,576 INFO L82 PathProgramCache]: Analyzing trace with hash 823495780, now seen corresponding path program 1 times [2021-01-06 19:46:54,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:54,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577904184] [2021-01-06 19:46:54,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:54,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:54,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577904184] [2021-01-06 19:46:54,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:54,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:46:54,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433713540] [2021-01-06 19:46:54,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:46:54,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:54,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:46:54,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:54,761 INFO L87 Difference]: Start difference. First operand 221 states and 327 transitions. Second operand 3 states. [2021-01-06 19:46:54,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:54,801 INFO L93 Difference]: Finished difference Result 545 states and 847 transitions. [2021-01-06 19:46:54,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:46:54,801 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2021-01-06 19:46:54,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:54,805 INFO L225 Difference]: With dead ends: 545 [2021-01-06 19:46:54,805 INFO L226 Difference]: Without dead ends: 371 [2021-01-06 19:46:54,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:54,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-01-06 19:46:54,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 369. [2021-01-06 19:46:54,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2021-01-06 19:46:54,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 564 transitions. [2021-01-06 19:46:54,884 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 564 transitions. Word has length 78 [2021-01-06 19:46:54,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:54,885 INFO L481 AbstractCegarLoop]: Abstraction has 369 states and 564 transitions. [2021-01-06 19:46:54,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:46:54,886 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 564 transitions. [2021-01-06 19:46:54,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-01-06 19:46:54,888 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:54,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:46:54,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 19:46:54,889 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:54,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:54,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1276515004, now seen corresponding path program 1 times [2021-01-06 19:46:54,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:54,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090568797] [2021-01-06 19:46:54,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:54,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:54,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090568797] [2021-01-06 19:46:54,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:54,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:46:54,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469831935] [2021-01-06 19:46:54,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:46:54,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:54,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:46:54,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:54,981 INFO L87 Difference]: Start difference. First operand 369 states and 564 transitions. Second operand 3 states. [2021-01-06 19:46:55,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:55,036 INFO L93 Difference]: Finished difference Result 965 states and 1518 transitions. [2021-01-06 19:46:55,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:46:55,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2021-01-06 19:46:55,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:55,043 INFO L225 Difference]: With dead ends: 965 [2021-01-06 19:46:55,043 INFO L226 Difference]: Without dead ends: 643 [2021-01-06 19:46:55,045 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 [2021-01-06 19:46:55,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-01-06 19:46:55,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 641. [2021-01-06 19:46:55,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2021-01-06 19:46:55,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 996 transitions. [2021-01-06 19:46:55,082 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 996 transitions. Word has length 79 [2021-01-06 19:46:55,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:55,082 INFO L481 AbstractCegarLoop]: Abstraction has 641 states and 996 transitions. [2021-01-06 19:46:55,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:46:55,083 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 996 transitions. [2021-01-06 19:46:55,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-01-06 19:46:55,084 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:55,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:46:55,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 19:46:55,084 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:55,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:55,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1327982836, now seen corresponding path program 1 times [2021-01-06 19:46:55,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:55,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274319928] [2021-01-06 19:46:55,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:55,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:55,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274319928] [2021-01-06 19:46:55,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:55,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:46:55,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783261237] [2021-01-06 19:46:55,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:46:55,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:55,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:46:55,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:55,154 INFO L87 Difference]: Start difference. First operand 641 states and 996 transitions. Second operand 3 states. [2021-01-06 19:46:55,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:55,194 INFO L93 Difference]: Finished difference Result 1733 states and 2734 transitions. [2021-01-06 19:46:55,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:46:55,195 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2021-01-06 19:46:55,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:55,201 INFO L225 Difference]: With dead ends: 1733 [2021-01-06 19:46:55,202 INFO L226 Difference]: Without dead ends: 1139 [2021-01-06 19:46:55,203 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 [2021-01-06 19:46:55,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-01-06 19:46:55,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1137. [2021-01-06 19:46:55,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1137 states. [2021-01-06 19:46:55,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1776 transitions. [2021-01-06 19:46:55,241 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1776 transitions. Word has length 80 [2021-01-06 19:46:55,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:55,241 INFO L481 AbstractCegarLoop]: Abstraction has 1137 states and 1776 transitions. [2021-01-06 19:46:55,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:46:55,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1776 transitions. [2021-01-06 19:46:55,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-06 19:46:55,242 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:55,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:46:55,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 19:46:55,243 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:55,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:55,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1219881940, now seen corresponding path program 1 times [2021-01-06 19:46:55,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:55,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158398323] [2021-01-06 19:46:55,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:55,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:55,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158398323] [2021-01-06 19:46:55,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:55,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:46:55,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522516505] [2021-01-06 19:46:55,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:46:55,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:55,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:46:55,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:55,341 INFO L87 Difference]: Start difference. First operand 1137 states and 1776 transitions. Second operand 3 states. [2021-01-06 19:46:55,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:55,437 INFO L93 Difference]: Finished difference Result 3125 states and 4914 transitions. [2021-01-06 19:46:55,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:46:55,437 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2021-01-06 19:46:55,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:55,449 INFO L225 Difference]: With dead ends: 3125 [2021-01-06 19:46:55,450 INFO L226 Difference]: Without dead ends: 2035 [2021-01-06 19:46:55,452 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 [2021-01-06 19:46:55,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2021-01-06 19:46:55,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2033. [2021-01-06 19:46:55,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2033 states. [2021-01-06 19:46:55,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 3168 transitions. [2021-01-06 19:46:55,530 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 3168 transitions. Word has length 81 [2021-01-06 19:46:55,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:55,530 INFO L481 AbstractCegarLoop]: Abstraction has 2033 states and 3168 transitions. [2021-01-06 19:46:55,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:46:55,531 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 3168 transitions. [2021-01-06 19:46:55,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-01-06 19:46:55,531 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:55,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:46:55,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 19:46:55,532 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:55,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:55,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1035004540, now seen corresponding path program 1 times [2021-01-06 19:46:55,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:55,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534204070] [2021-01-06 19:46:55,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:55,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:55,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534204070] [2021-01-06 19:46:55,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:55,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:46:55,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531954074] [2021-01-06 19:46:55,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:46:55,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:55,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:46:55,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:55,634 INFO L87 Difference]: Start difference. First operand 2033 states and 3168 transitions. Second operand 3 states. [2021-01-06 19:46:55,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:55,746 INFO L93 Difference]: Finished difference Result 5621 states and 8770 transitions. [2021-01-06 19:46:55,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:46:55,746 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2021-01-06 19:46:55,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:55,765 INFO L225 Difference]: With dead ends: 5621 [2021-01-06 19:46:55,766 INFO L226 Difference]: Without dead ends: 3635 [2021-01-06 19:46:55,773 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 [2021-01-06 19:46:55,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3635 states. [2021-01-06 19:46:55,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3635 to 3633. [2021-01-06 19:46:55,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3633 states. [2021-01-06 19:46:55,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3633 states to 3633 states and 5616 transitions. [2021-01-06 19:46:55,933 INFO L78 Accepts]: Start accepts. Automaton has 3633 states and 5616 transitions. Word has length 82 [2021-01-06 19:46:55,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:55,934 INFO L481 AbstractCegarLoop]: Abstraction has 3633 states and 5616 transitions. [2021-01-06 19:46:55,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:46:55,935 INFO L276 IsEmpty]: Start isEmpty. Operand 3633 states and 5616 transitions. [2021-01-06 19:46:55,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-01-06 19:46:55,936 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:55,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:46:55,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 19:46:55,937 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:55,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:55,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1846622820, now seen corresponding path program 1 times [2021-01-06 19:46:55,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:55,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174989022] [2021-01-06 19:46:55,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:56,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:56,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174989022] [2021-01-06 19:46:56,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:56,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 19:46:56,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880600621] [2021-01-06 19:46:56,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 19:46:56,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:56,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 19:46:56,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-01-06 19:46:56,208 INFO L87 Difference]: Start difference. First operand 3633 states and 5616 transitions. Second operand 8 states. [2021-01-06 19:46:57,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:57,212 INFO L93 Difference]: Finished difference Result 22653 states and 34710 transitions. [2021-01-06 19:46:57,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 19:46:57,213 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2021-01-06 19:46:57,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:57,321 INFO L225 Difference]: With dead ends: 22653 [2021-01-06 19:46:57,321 INFO L226 Difference]: Without dead ends: 19067 [2021-01-06 19:46:57,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-01-06 19:46:57,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19067 states. [2021-01-06 19:46:58,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19067 to 19057. [2021-01-06 19:46:58,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19057 states. [2021-01-06 19:46:58,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19057 states to 19057 states and 29072 transitions. [2021-01-06 19:46:58,354 INFO L78 Accepts]: Start accepts. Automaton has 19057 states and 29072 transitions. Word has length 83 [2021-01-06 19:46:58,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:58,354 INFO L481 AbstractCegarLoop]: Abstraction has 19057 states and 29072 transitions. [2021-01-06 19:46:58,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 19:46:58,355 INFO L276 IsEmpty]: Start isEmpty. Operand 19057 states and 29072 transitions. [2021-01-06 19:46:58,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-01-06 19:46:58,356 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:58,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:46:58,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 19:46:58,356 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:58,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:58,357 INFO L82 PathProgramCache]: Analyzing trace with hash -927768561, now seen corresponding path program 1 times [2021-01-06 19:46:58,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:58,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808164637] [2021-01-06 19:46:58,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:58,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:58,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808164637] [2021-01-06 19:46:58,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:58,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 19:46:58,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870221854] [2021-01-06 19:46:58,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 19:46:58,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:58,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 19:46:58,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-01-06 19:46:58,527 INFO L87 Difference]: Start difference. First operand 19057 states and 29072 transitions. Second operand 8 states. [2021-01-06 19:46:58,682 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2021-01-06 19:47:01,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:47:01,681 INFO L93 Difference]: Finished difference Result 106847 states and 163447 transitions. [2021-01-06 19:47:01,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 19:47:01,682 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2021-01-06 19:47:01,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:47:01,952 INFO L225 Difference]: With dead ends: 106847 [2021-01-06 19:47:01,952 INFO L226 Difference]: Without dead ends: 87837 [2021-01-06 19:47:02,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-01-06 19:47:02,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87837 states. [2021-01-06 19:47:04,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87837 to 38065. [2021-01-06 19:47:04,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38065 states. [2021-01-06 19:47:05,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38065 states to 38065 states and 57328 transitions. [2021-01-06 19:47:05,103 INFO L78 Accepts]: Start accepts. Automaton has 38065 states and 57328 transitions. Word has length 84 [2021-01-06 19:47:05,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:47:05,103 INFO L481 AbstractCegarLoop]: Abstraction has 38065 states and 57328 transitions. [2021-01-06 19:47:05,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 19:47:05,103 INFO L276 IsEmpty]: Start isEmpty. Operand 38065 states and 57328 transitions. [2021-01-06 19:47:05,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-01-06 19:47:05,104 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:47:05,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:47:05,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 19:47:05,105 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:47:05,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:47:05,106 INFO L82 PathProgramCache]: Analyzing trace with hash 920622579, now seen corresponding path program 1 times [2021-01-06 19:47:05,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:47:05,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208237363] [2021-01-06 19:47:05,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:47:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:47:05,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:47:05,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208237363] [2021-01-06 19:47:05,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:47:05,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 19:47:05,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206600280] [2021-01-06 19:47:05,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 19:47:05,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:47:05,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 19:47:05,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-01-06 19:47:05,258 INFO L87 Difference]: Start difference. First operand 38065 states and 57328 transitions. Second operand 8 states. [2021-01-06 19:47:08,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:47:08,139 INFO L93 Difference]: Finished difference Result 79155 states and 117681 transitions. [2021-01-06 19:47:08,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 19:47:08,140 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2021-01-06 19:47:08,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:47:08,355 INFO L225 Difference]: With dead ends: 79155 [2021-01-06 19:47:08,356 INFO L226 Difference]: Without dead ends: 79153 [2021-01-06 19:47:08,382 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 [2021-01-06 19:47:08,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79153 states. [2021-01-06 19:47:10,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79153 to 40369. [2021-01-06 19:47:10,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40369 states. [2021-01-06 19:47:10,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40369 states to 40369 states and 59632 transitions. [2021-01-06 19:47:10,706 INFO L78 Accepts]: Start accepts. Automaton has 40369 states and 59632 transitions. Word has length 85 [2021-01-06 19:47:10,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:47:10,706 INFO L481 AbstractCegarLoop]: Abstraction has 40369 states and 59632 transitions. [2021-01-06 19:47:10,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 19:47:10,706 INFO L276 IsEmpty]: Start isEmpty. Operand 40369 states and 59632 transitions. [2021-01-06 19:47:10,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-06 19:47:10,707 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:47:10,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:47:10,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 19:47:10,708 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:47:10,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:47:10,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1472892313, now seen corresponding path program 1 times [2021-01-06 19:47:10,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:47:10,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151252207] [2021-01-06 19:47:10,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:47:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:47:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:47:10,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151252207] [2021-01-06 19:47:10,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:47:10,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:47:10,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073402983] [2021-01-06 19:47:10,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:47:10,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:47:10,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:47:10,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:47:10,769 INFO L87 Difference]: Start difference. First operand 40369 states and 59632 transitions. Second operand 3 states. [2021-01-06 19:47:13,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:47:13,435 INFO L93 Difference]: Finished difference Result 98711 states and 145940 transitions. [2021-01-06 19:47:13,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:47:13,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2021-01-06 19:47:13,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:47:13,541 INFO L225 Difference]: With dead ends: 98711 [2021-01-06 19:47:13,541 INFO L226 Difference]: Without dead ends: 58389 [2021-01-06 19:47:13,595 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 [2021-01-06 19:47:13,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58389 states. [2021-01-06 19:47:16,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58389 to 58387. [2021-01-06 19:47:16,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58387 states. [2021-01-06 19:47:16,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58387 states to 58387 states and 86002 transitions. [2021-01-06 19:47:16,589 INFO L78 Accepts]: Start accepts. Automaton has 58387 states and 86002 transitions. Word has length 86 [2021-01-06 19:47:16,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:47:16,590 INFO L481 AbstractCegarLoop]: Abstraction has 58387 states and 86002 transitions. [2021-01-06 19:47:16,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:47:16,590 INFO L276 IsEmpty]: Start isEmpty. Operand 58387 states and 86002 transitions. [2021-01-06 19:47:16,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-01-06 19:47:16,621 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:47:16,621 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:47:16,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 19:47:16,622 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:47:16,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:47:16,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1072838691, now seen corresponding path program 1 times [2021-01-06 19:47:16,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:47:16,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912221441] [2021-01-06 19:47:16,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:47:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:47:16,866 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 19:47:16,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912221441] [2021-01-06 19:47:16,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940548310] [2021-01-06 19:47:16,867 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 [2021-01-06 19:47:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:47:17,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 19:47:17,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:47:17,441 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 19:47:17,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:47:17,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 7 [2021-01-06 19:47:17,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812805717] [2021-01-06 19:47:17,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 19:47:17,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:47:17,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 19:47:17,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:47:17,445 INFO L87 Difference]: Start difference. First operand 58387 states and 86002 transitions. Second operand 7 states. [2021-01-06 19:47:22,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:47:22,065 INFO L93 Difference]: Finished difference Result 144430 states and 213468 transitions. [2021-01-06 19:47:22,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:47:22,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2021-01-06 19:47:22,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:47:22,282 INFO L225 Difference]: With dead ends: 144430 [2021-01-06 19:47:22,282 INFO L226 Difference]: Without dead ends: 104108 [2021-01-06 19:47:22,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-01-06 19:47:22,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104108 states. [2021-01-06 19:47:27,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104108 to 96659. [2021-01-06 19:47:27,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96659 states. [2021-01-06 19:47:27,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96659 states to 96659 states and 141874 transitions. [2021-01-06 19:47:27,438 INFO L78 Accepts]: Start accepts. Automaton has 96659 states and 141874 transitions. Word has length 117 [2021-01-06 19:47:27,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:47:27,439 INFO L481 AbstractCegarLoop]: Abstraction has 96659 states and 141874 transitions. [2021-01-06 19:47:27,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 19:47:27,439 INFO L276 IsEmpty]: Start isEmpty. Operand 96659 states and 141874 transitions. [2021-01-06 19:47:27,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-01-06 19:47:27,472 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:47:27,473 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:47:27,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-06 19:47:27,687 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:47:27,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:47:27,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1628565047, now seen corresponding path program 1 times [2021-01-06 19:47:27,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:47:27,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370068111] [2021-01-06 19:47:27,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:47:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:47:27,772 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:47:27,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370068111] [2021-01-06 19:47:27,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:47:27,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:47:27,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61852622] [2021-01-06 19:47:27,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:47:27,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:47:27,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:47:27,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:47:27,780 INFO L87 Difference]: Start difference. First operand 96659 states and 141874 transitions. Second operand 3 states. [2021-01-06 19:47:34,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:47:34,615 INFO L93 Difference]: Finished difference Result 257623 states and 377716 transitions. [2021-01-06 19:47:34,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:47:34,615 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2021-01-06 19:47:34,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:47:34,949 INFO L225 Difference]: With dead ends: 257623 [2021-01-06 19:47:34,949 INFO L226 Difference]: Without dead ends: 174101 [2021-01-06 19:47:35,096 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 [2021-01-06 19:47:35,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174101 states. [2021-01-06 19:47:43,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174101 to 174099. [2021-01-06 19:47:43,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174099 states. [2021-01-06 19:47:43,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174099 states to 174099 states and 253074 transitions. [2021-01-06 19:47:43,826 INFO L78 Accepts]: Start accepts. Automaton has 174099 states and 253074 transitions. Word has length 118 [2021-01-06 19:47:43,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:47:43,827 INFO L481 AbstractCegarLoop]: Abstraction has 174099 states and 253074 transitions. [2021-01-06 19:47:43,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:47:43,827 INFO L276 IsEmpty]: Start isEmpty. Operand 174099 states and 253074 transitions. [2021-01-06 19:47:43,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-01-06 19:47:43,886 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:47:43,886 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:47:43,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 19:47:43,887 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:47:43,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:47:43,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1618503993, now seen corresponding path program 1 times [2021-01-06 19:47:43,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:47:43,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735131923] [2021-01-06 19:47:43,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:47:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:47:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 19:47:44,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735131923] [2021-01-06 19:47:44,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:47:44,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 19:47:44,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011534121] [2021-01-06 19:47:44,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 19:47:44,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:47:44,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 19:47:44,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-01-06 19:47:44,081 INFO L87 Difference]: Start difference. First operand 174099 states and 253074 transitions. Second operand 8 states. [2021-01-06 19:47:59,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:47:59,489 INFO L93 Difference]: Finished difference Result 480433 states and 704057 transitions. [2021-01-06 19:47:59,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 19:47:59,490 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 118 [2021-01-06 19:47:59,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:48:00,311 INFO L225 Difference]: With dead ends: 480433 [2021-01-06 19:48:00,312 INFO L226 Difference]: Without dead ends: 398511 [2021-01-06 19:48:00,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-01-06 19:48:00,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398511 states. [2021-01-06 19:48:13,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398511 to 248547. [2021-01-06 19:48:13,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248547 states. [2021-01-06 19:48:14,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248547 states to 248547 states and 361170 transitions. [2021-01-06 19:48:14,813 INFO L78 Accepts]: Start accepts. Automaton has 248547 states and 361170 transitions. Word has length 118 [2021-01-06 19:48:14,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:48:14,813 INFO L481 AbstractCegarLoop]: Abstraction has 248547 states and 361170 transitions. [2021-01-06 19:48:14,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 19:48:14,813 INFO L276 IsEmpty]: Start isEmpty. Operand 248547 states and 361170 transitions. [2021-01-06 19:48:14,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-01-06 19:48:14,863 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:48:14,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:48:14,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 19:48:14,864 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:48:14,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:48:14,864 INFO L82 PathProgramCache]: Analyzing trace with hash -876083369, now seen corresponding path program 1 times [2021-01-06 19:48:14,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:48:14,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555366987] [2021-01-06 19:48:14,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:48:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:48:14,952 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:48:14,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555366987] [2021-01-06 19:48:14,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:48:14,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:48:14,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031258153] [2021-01-06 19:48:14,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:48:14,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:48:14,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:48:14,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:48:14,957 INFO L87 Difference]: Start difference. First operand 248547 states and 361170 transitions. Second operand 3 states. [2021-01-06 19:48:32,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:48:32,070 INFO L93 Difference]: Finished difference Result 606480 states and 880914 transitions. [2021-01-06 19:48:32,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:48:32,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2021-01-06 19:48:32,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:48:32,993 INFO L225 Difference]: With dead ends: 606480 [2021-01-06 19:48:32,993 INFO L226 Difference]: Without dead ends: 410638 [2021-01-06 19:48:33,226 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 [2021-01-06 19:48:33,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410638 states. [2021-01-06 19:48:52,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410638 to 393228. [2021-01-06 19:48:52,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393228 states.