/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 19:43:31,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 19:43:31,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 19:43:31,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 19:43:31,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 19:43:31,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 19:43:31,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 19:43:31,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 19:43:31,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 19:43:31,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 19:43:31,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 19:43:31,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 19:43:31,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 19:43:31,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 19:43:31,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 19:43:31,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 19:43:31,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 19:43:31,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 19:43:31,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 19:43:31,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 19:43:31,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 19:43:31,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 19:43:31,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 19:43:31,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 19:43:31,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 19:43:31,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 19:43:31,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 19:43:31,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 19:43:31,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 19:43:31,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 19:43:31,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 19:43:31,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 19:43:31,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 19:43:31,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 19:43:31,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 19:43:31,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 19:43:31,622 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 19:43:31,677 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 19:43:31,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 19:43:31,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 19:43:31,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 19:43:31,683 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 19:43:31,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 19:43:31,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 19:43:31,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 19:43:31,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 19:43:31,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 19:43:31,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 19:43:31,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 19:43:31,686 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 19:43:31,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 19:43:31,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 19:43:31,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 19:43:31,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 19:43:31,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 19:43:31,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 19:43:31,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 19:43:31,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 19:43:31,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 19:43:31,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 19:43:31,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 19:43:31,689 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 19:43:31,689 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 19:43:32,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 19:43:32,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 19:43:32,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 19:43:32,112 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 19:43:32,112 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 19:43:32,114 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c [2021-01-06 19:43:32,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fee70f2b4/4ab03dcdeeb94c1a9ba33bc9683ba096/FLAGbbbff551f [2021-01-06 19:43:32,877 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 19:43:32,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c [2021-01-06 19:43:32,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fee70f2b4/4ab03dcdeeb94c1a9ba33bc9683ba096/FLAGbbbff551f [2021-01-06 19:43:33,237 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fee70f2b4/4ab03dcdeeb94c1a9ba33bc9683ba096 [2021-01-06 19:43:33,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 19:43:33,245 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 19:43:33,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 19:43:33,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 19:43:33,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 19:43:33,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:43:33" (1/1) ... [2021-01-06 19:43:33,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b3a30c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:33, skipping insertion in model container [2021-01-06 19:43:33,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:43:33" (1/1) ... [2021-01-06 19:43:33,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 19:43:33,334 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2021-01-06 19:43:33,649 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c[6691,6704] [2021-01-06 19:43:33,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:43:33,662 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2021-01-06 19:43:33,711 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c[6691,6704] [2021-01-06 19:43:33,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:43:33,735 INFO L208 MainTranslator]: Completed translation [2021-01-06 19:43:33,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:33 WrapperNode [2021-01-06 19:43:33,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 19:43:33,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 19:43:33,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 19:43:33,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 19:43:33,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:33" (1/1) ... [2021-01-06 19:43:33,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:33" (1/1) ... [2021-01-06 19:43:33,790 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 19:43:33,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 19:43:33,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 19:43:33,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 19:43:33,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:33" (1/1) ... [2021-01-06 19:43:33,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:33" (1/1) ... [2021-01-06 19:43:33,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:33" (1/1) ... [2021-01-06 19:43:33,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:33" (1/1) ... [2021-01-06 19:43:33,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:33" (1/1) ... [2021-01-06 19:43:33,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:33" (1/1) ... [2021-01-06 19:43:33,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:33" (1/1) ... [2021-01-06 19:43:33,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 19:43:33,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 19:43:33,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 19:43:33,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 19:43:33,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:33" (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 19:43:33,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 19:43:33,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 19:43:33,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 19:43:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 19:43:34,474 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 19:43:34,474 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-01-06 19:43:34,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:43:34 BoogieIcfgContainer [2021-01-06 19:43:34,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 19:43:34,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 19:43:34,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 19:43:34,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 19:43:34,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 07:43:33" (1/3) ... [2021-01-06 19:43:34,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae7a4dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:43:34, skipping insertion in model container [2021-01-06 19:43:34,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:33" (2/3) ... [2021-01-06 19:43:34,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae7a4dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:43:34, skipping insertion in model container [2021-01-06 19:43:34,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:43:34" (3/3) ... [2021-01-06 19:43:34,486 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c [2021-01-06 19:43:34,493 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 19:43:34,497 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 19:43:34,516 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 19:43:34,558 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 19:43:34,558 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 19:43:34,559 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 19:43:34,559 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 19:43:34,559 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 19:43:34,559 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 19:43:34,559 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 19:43:34,559 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 19:43:34,576 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-01-06 19:43:34,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-06 19:43:34,584 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:34,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:43:34,585 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:34,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:34,591 INFO L82 PathProgramCache]: Analyzing trace with hash 88399749, now seen corresponding path program 1 times [2021-01-06 19:43:34,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:34,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372053815] [2021-01-06 19:43:34,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:34,856 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 19:43:34,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372053815] [2021-01-06 19:43:34,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:34,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:43:34,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303361223] [2021-01-06 19:43:34,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:43:34,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:34,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:43:34,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:43:34,882 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 5 states. [2021-01-06 19:43:34,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:34,995 INFO L93 Difference]: Finished difference Result 182 states and 292 transitions. [2021-01-06 19:43:34,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:43:34,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2021-01-06 19:43:34,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:35,009 INFO L225 Difference]: With dead ends: 182 [2021-01-06 19:43:35,009 INFO L226 Difference]: Without dead ends: 121 [2021-01-06 19:43:35,013 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 19:43:35,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-01-06 19:43:35,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 72. [2021-01-06 19:43:35,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-01-06 19:43:35,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 100 transitions. [2021-01-06 19:43:35,058 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 100 transitions. Word has length 25 [2021-01-06 19:43:35,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:35,058 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 100 transitions. [2021-01-06 19:43:35,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:43:35,059 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 100 transitions. [2021-01-06 19:43:35,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 19:43:35,061 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:35,061 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] [2021-01-06 19:43:35,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 19:43:35,062 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:35,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:35,063 INFO L82 PathProgramCache]: Analyzing trace with hash 36726459, now seen corresponding path program 1 times [2021-01-06 19:43:35,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:35,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583102566] [2021-01-06 19:43:35,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:35,241 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 19:43:35,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583102566] [2021-01-06 19:43:35,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:35,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:43:35,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625540051] [2021-01-06 19:43:35,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:43:35,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:35,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:43:35,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:35,246 INFO L87 Difference]: Start difference. First operand 72 states and 100 transitions. Second operand 3 states. [2021-01-06 19:43:35,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:35,274 INFO L93 Difference]: Finished difference Result 158 states and 234 transitions. [2021-01-06 19:43:35,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:43:35,274 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2021-01-06 19:43:35,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:35,276 INFO L225 Difference]: With dead ends: 158 [2021-01-06 19:43:35,277 INFO L226 Difference]: Without dead ends: 109 [2021-01-06 19:43:35,278 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 19:43:35,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-01-06 19:43:35,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2021-01-06 19:43:35,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2021-01-06 19:43:35,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 155 transitions. [2021-01-06 19:43:35,292 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 155 transitions. Word has length 41 [2021-01-06 19:43:35,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:35,292 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 155 transitions. [2021-01-06 19:43:35,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:43:35,293 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 155 transitions. [2021-01-06 19:43:35,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-06 19:43:35,294 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:35,294 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] [2021-01-06 19:43:35,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 19:43:35,295 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:35,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:35,296 INFO L82 PathProgramCache]: Analyzing trace with hash 941880883, now seen corresponding path program 1 times [2021-01-06 19:43:35,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:35,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451595005] [2021-01-06 19:43:35,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:35,432 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 19:43:35,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451595005] [2021-01-06 19:43:35,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:35,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:43:35,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340637108] [2021-01-06 19:43:35,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:43:35,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:35,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:43:35,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:35,436 INFO L87 Difference]: Start difference. First operand 107 states and 155 transitions. Second operand 3 states. [2021-01-06 19:43:35,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:35,471 INFO L93 Difference]: Finished difference Result 251 states and 379 transitions. [2021-01-06 19:43:35,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:43:35,472 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2021-01-06 19:43:35,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:35,479 INFO L225 Difference]: With dead ends: 251 [2021-01-06 19:43:35,479 INFO L226 Difference]: Without dead ends: 167 [2021-01-06 19:43:35,480 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 19:43:35,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-01-06 19:43:35,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 165. [2021-01-06 19:43:35,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2021-01-06 19:43:35,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 244 transitions. [2021-01-06 19:43:35,519 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 244 transitions. Word has length 42 [2021-01-06 19:43:35,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:35,519 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 244 transitions. [2021-01-06 19:43:35,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:43:35,520 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 244 transitions. [2021-01-06 19:43:35,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-06 19:43:35,526 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:35,526 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] [2021-01-06 19:43:35,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 19:43:35,526 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:35,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:35,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1294438837, now seen corresponding path program 1 times [2021-01-06 19:43:35,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:35,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842574394] [2021-01-06 19:43:35,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:35,733 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 19:43:35,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842574394] [2021-01-06 19:43:35,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:35,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:43:35,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903651541] [2021-01-06 19:43:35,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:43:35,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:35,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:43:35,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:43:35,737 INFO L87 Difference]: Start difference. First operand 165 states and 244 transitions. Second operand 5 states. [2021-01-06 19:43:35,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:35,825 INFO L93 Difference]: Finished difference Result 555 states and 845 transitions. [2021-01-06 19:43:35,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:43:35,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2021-01-06 19:43:35,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:35,830 INFO L225 Difference]: With dead ends: 555 [2021-01-06 19:43:35,830 INFO L226 Difference]: Without dead ends: 413 [2021-01-06 19:43:35,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:43:35,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-01-06 19:43:35,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 409. [2021-01-06 19:43:35,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2021-01-06 19:43:35,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 618 transitions. [2021-01-06 19:43:35,870 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 618 transitions. Word has length 43 [2021-01-06 19:43:35,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:35,871 INFO L481 AbstractCegarLoop]: Abstraction has 409 states and 618 transitions. [2021-01-06 19:43:35,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:43:35,871 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 618 transitions. [2021-01-06 19:43:35,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-06 19:43:35,873 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:35,873 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] [2021-01-06 19:43:35,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 19:43:35,873 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:35,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:35,874 INFO L82 PathProgramCache]: Analyzing trace with hash 2077130417, now seen corresponding path program 1 times [2021-01-06 19:43:35,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:35,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939078885] [2021-01-06 19:43:35,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:35,927 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 19:43:35,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939078885] [2021-01-06 19:43:35,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:35,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:43:35,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630663973] [2021-01-06 19:43:35,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:43:35,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:35,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:43:35,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:35,930 INFO L87 Difference]: Start difference. First operand 409 states and 618 transitions. Second operand 3 states. [2021-01-06 19:43:35,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:35,982 INFO L93 Difference]: Finished difference Result 1073 states and 1628 transitions. [2021-01-06 19:43:35,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:43:35,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2021-01-06 19:43:35,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:35,996 INFO L225 Difference]: With dead ends: 1073 [2021-01-06 19:43:35,996 INFO L226 Difference]: Without dead ends: 687 [2021-01-06 19:43:35,998 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 19:43:36,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2021-01-06 19:43:36,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 685. [2021-01-06 19:43:36,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2021-01-06 19:43:36,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1020 transitions. [2021-01-06 19:43:36,058 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1020 transitions. Word has length 43 [2021-01-06 19:43:36,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:36,058 INFO L481 AbstractCegarLoop]: Abstraction has 685 states and 1020 transitions. [2021-01-06 19:43:36,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:43:36,058 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1020 transitions. [2021-01-06 19:43:36,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-06 19:43:36,060 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:36,060 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] [2021-01-06 19:43:36,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 19:43:36,060 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:36,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:36,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1822451518, now seen corresponding path program 1 times [2021-01-06 19:43:36,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:36,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016351127] [2021-01-06 19:43:36,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:36,136 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 19:43:36,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016351127] [2021-01-06 19:43:36,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:36,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:43:36,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581256744] [2021-01-06 19:43:36,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:43:36,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:36,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:43:36,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:43:36,141 INFO L87 Difference]: Start difference. First operand 685 states and 1020 transitions. Second operand 5 states. [2021-01-06 19:43:36,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:36,271 INFO L93 Difference]: Finished difference Result 2693 states and 4040 transitions. [2021-01-06 19:43:36,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:43:36,272 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2021-01-06 19:43:36,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:36,287 INFO L225 Difference]: With dead ends: 2693 [2021-01-06 19:43:36,287 INFO L226 Difference]: Without dead ends: 2031 [2021-01-06 19:43:36,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:43:36,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2021-01-06 19:43:36,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 1345. [2021-01-06 19:43:36,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1345 states. [2021-01-06 19:43:36,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 1968 transitions. [2021-01-06 19:43:36,388 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 1968 transitions. Word has length 44 [2021-01-06 19:43:36,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:36,390 INFO L481 AbstractCegarLoop]: Abstraction has 1345 states and 1968 transitions. [2021-01-06 19:43:36,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:43:36,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 1968 transitions. [2021-01-06 19:43:36,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-06 19:43:36,395 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:36,396 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] [2021-01-06 19:43:36,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 19:43:36,396 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:36,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:36,400 INFO L82 PathProgramCache]: Analyzing trace with hash 278098778, now seen corresponding path program 1 times [2021-01-06 19:43:36,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:36,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354596231] [2021-01-06 19:43:36,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:36,541 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 19:43:36,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354596231] [2021-01-06 19:43:36,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:36,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 19:43:36,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953367961] [2021-01-06 19:43:36,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 19:43:36,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:36,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 19:43:36,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-01-06 19:43:36,546 INFO L87 Difference]: Start difference. First operand 1345 states and 1968 transitions. Second operand 8 states. [2021-01-06 19:43:36,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:36,813 INFO L93 Difference]: Finished difference Result 2859 states and 4105 transitions. [2021-01-06 19:43:36,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 19:43:36,814 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2021-01-06 19:43:36,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:36,829 INFO L225 Difference]: With dead ends: 2859 [2021-01-06 19:43:36,829 INFO L226 Difference]: Without dead ends: 2857 [2021-01-06 19:43:36,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-01-06 19:43:36,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2021-01-06 19:43:36,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 1489. [2021-01-06 19:43:36,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1489 states. [2021-01-06 19:43:36,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 2112 transitions. [2021-01-06 19:43:36,956 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 2112 transitions. Word has length 45 [2021-01-06 19:43:36,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:36,957 INFO L481 AbstractCegarLoop]: Abstraction has 1489 states and 2112 transitions. [2021-01-06 19:43:36,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 19:43:36,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 2112 transitions. [2021-01-06 19:43:36,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-06 19:43:36,958 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:36,958 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] [2021-01-06 19:43:36,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 19:43:36,958 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:36,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:36,959 INFO L82 PathProgramCache]: Analyzing trace with hash 83706006, now seen corresponding path program 1 times [2021-01-06 19:43:36,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:36,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618519689] [2021-01-06 19:43:36,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:36,997 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 19:43:36,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618519689] [2021-01-06 19:43:36,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:36,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:43:36,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710307429] [2021-01-06 19:43:36,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:43:36,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:37,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:43:37,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:37,000 INFO L87 Difference]: Start difference. First operand 1489 states and 2112 transitions. Second operand 3 states. [2021-01-06 19:43:37,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:37,115 INFO L93 Difference]: Finished difference Result 3507 states and 4980 transitions. [2021-01-06 19:43:37,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:43:37,115 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2021-01-06 19:43:37,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:37,126 INFO L225 Difference]: With dead ends: 3507 [2021-01-06 19:43:37,126 INFO L226 Difference]: Without dead ends: 2041 [2021-01-06 19:43:37,129 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 19:43:37,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2041 states. [2021-01-06 19:43:37,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2041 to 2039. [2021-01-06 19:43:37,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2039 states. [2021-01-06 19:43:37,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 2870 transitions. [2021-01-06 19:43:37,278 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 2870 transitions. Word has length 46 [2021-01-06 19:43:37,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:37,279 INFO L481 AbstractCegarLoop]: Abstraction has 2039 states and 2870 transitions. [2021-01-06 19:43:37,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:43:37,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 2870 transitions. [2021-01-06 19:43:37,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-01-06 19:43:37,282 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:37,282 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:43:37,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 19:43:37,283 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:37,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:37,285 INFO L82 PathProgramCache]: Analyzing trace with hash -500810539, now seen corresponding path program 1 times [2021-01-06 19:43:37,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:37,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445611448] [2021-01-06 19:43:37,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:37,486 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 19:43:37,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445611448] [2021-01-06 19:43:37,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413913414] [2021-01-06 19:43:37,492 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 19:43:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:37,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 19:43:37,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:43:37,766 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 19:43:37,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:43:37,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 7 [2021-01-06 19:43:37,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879267773] [2021-01-06 19:43:37,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 19:43:37,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:37,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 19:43:37,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:43:37,769 INFO L87 Difference]: Start difference. First operand 2039 states and 2870 transitions. Second operand 7 states. [2021-01-06 19:43:38,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:38,047 INFO L93 Difference]: Finished difference Result 5054 states and 7160 transitions. [2021-01-06 19:43:38,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:43:38,048 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2021-01-06 19:43:38,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:38,066 INFO L225 Difference]: With dead ends: 5054 [2021-01-06 19:43:38,067 INFO L226 Difference]: Without dead ends: 3588 [2021-01-06 19:43:38,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 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 19:43:38,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3588 states. [2021-01-06 19:43:38,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3588 to 3367. [2021-01-06 19:43:38,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3367 states. [2021-01-06 19:43:38,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3367 states to 3367 states and 4710 transitions. [2021-01-06 19:43:38,313 INFO L78 Accepts]: Start accepts. Automaton has 3367 states and 4710 transitions. Word has length 65 [2021-01-06 19:43:38,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:38,315 INFO L481 AbstractCegarLoop]: Abstraction has 3367 states and 4710 transitions. [2021-01-06 19:43:38,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 19:43:38,315 INFO L276 IsEmpty]: Start isEmpty. Operand 3367 states and 4710 transitions. [2021-01-06 19:43:38,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 19:43:38,317 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:38,317 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] [2021-01-06 19:43:38,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-01-06 19:43:38,532 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:38,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:38,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1457272171, now seen corresponding path program 1 times [2021-01-06 19:43:38,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:38,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305155912] [2021-01-06 19:43:38,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:38,607 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 19:43:38,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305155912] [2021-01-06 19:43:38,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:38,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:43:38,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676326319] [2021-01-06 19:43:38,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:43:38,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:38,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:43:38,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:43:38,609 INFO L87 Difference]: Start difference. First operand 3367 states and 4710 transitions. Second operand 5 states. [2021-01-06 19:43:38,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:38,942 INFO L93 Difference]: Finished difference Result 5535 states and 7782 transitions. [2021-01-06 19:43:38,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:43:38,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2021-01-06 19:43:38,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:38,968 INFO L225 Difference]: With dead ends: 5535 [2021-01-06 19:43:38,968 INFO L226 Difference]: Without dead ends: 4907 [2021-01-06 19:43:38,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:43:38,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4907 states. [2021-01-06 19:43:39,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4907 to 3957. [2021-01-06 19:43:39,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3957 states. [2021-01-06 19:43:39,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3957 states to 3957 states and 5532 transitions. [2021-01-06 19:43:39,311 INFO L78 Accepts]: Start accepts. Automaton has 3957 states and 5532 transitions. Word has length 66 [2021-01-06 19:43:39,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:39,311 INFO L481 AbstractCegarLoop]: Abstraction has 3957 states and 5532 transitions. [2021-01-06 19:43:39,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:43:39,312 INFO L276 IsEmpty]: Start isEmpty. Operand 3957 states and 5532 transitions. [2021-01-06 19:43:39,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 19:43:39,314 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:39,314 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] [2021-01-06 19:43:39,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 19:43:39,314 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:39,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:39,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1029926107, now seen corresponding path program 1 times [2021-01-06 19:43:39,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:39,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614101301] [2021-01-06 19:43:39,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:39,384 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:39,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614101301] [2021-01-06 19:43:39,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:39,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:43:39,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730038762] [2021-01-06 19:43:39,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:43:39,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:39,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:43:39,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:39,387 INFO L87 Difference]: Start difference. First operand 3957 states and 5532 transitions. Second operand 3 states. [2021-01-06 19:43:39,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:39,781 INFO L93 Difference]: Finished difference Result 9006 states and 12536 transitions. [2021-01-06 19:43:39,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:43:39,781 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2021-01-06 19:43:39,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:39,810 INFO L225 Difference]: With dead ends: 9006 [2021-01-06 19:43:39,810 INFO L226 Difference]: Without dead ends: 6062 [2021-01-06 19:43:39,815 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 19:43:39,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6062 states. [2021-01-06 19:43:40,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6062 to 5720. [2021-01-06 19:43:40,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5720 states. [2021-01-06 19:43:40,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5720 states to 5720 states and 7852 transitions. [2021-01-06 19:43:40,219 INFO L78 Accepts]: Start accepts. Automaton has 5720 states and 7852 transitions. Word has length 66 [2021-01-06 19:43:40,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:40,219 INFO L481 AbstractCegarLoop]: Abstraction has 5720 states and 7852 transitions. [2021-01-06 19:43:40,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:43:40,219 INFO L276 IsEmpty]: Start isEmpty. Operand 5720 states and 7852 transitions. [2021-01-06 19:43:40,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 19:43:40,222 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:40,223 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:43:40,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 19:43:40,223 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:40,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:40,224 INFO L82 PathProgramCache]: Analyzing trace with hash 2088972849, now seen corresponding path program 1 times [2021-01-06 19:43:40,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:40,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502331321] [2021-01-06 19:43:40,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:40,275 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:40,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502331321] [2021-01-06 19:43:40,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:40,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:43:40,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734012354] [2021-01-06 19:43:40,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:43:40,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:40,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:43:40,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:40,278 INFO L87 Difference]: Start difference. First operand 5720 states and 7852 transitions. Second operand 3 states. [2021-01-06 19:43:40,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:40,851 INFO L93 Difference]: Finished difference Result 14480 states and 19782 transitions. [2021-01-06 19:43:40,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:43:40,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2021-01-06 19:43:40,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:40,886 INFO L225 Difference]: With dead ends: 14480 [2021-01-06 19:43:40,886 INFO L226 Difference]: Without dead ends: 9940 [2021-01-06 19:43:40,894 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 19:43:40,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9940 states. [2021-01-06 19:43:41,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9940 to 9938. [2021-01-06 19:43:41,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9938 states. [2021-01-06 19:43:41,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9938 states to 9938 states and 13384 transitions. [2021-01-06 19:43:41,518 INFO L78 Accepts]: Start accepts. Automaton has 9938 states and 13384 transitions. Word has length 66 [2021-01-06 19:43:41,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:41,518 INFO L481 AbstractCegarLoop]: Abstraction has 9938 states and 13384 transitions. [2021-01-06 19:43:41,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:43:41,519 INFO L276 IsEmpty]: Start isEmpty. Operand 9938 states and 13384 transitions. [2021-01-06 19:43:41,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 19:43:41,528 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:41,528 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] [2021-01-06 19:43:41,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 19:43:41,528 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:41,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:41,529 INFO L82 PathProgramCache]: Analyzing trace with hash -402340171, now seen corresponding path program 1 times [2021-01-06 19:43:41,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:41,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143433680] [2021-01-06 19:43:41,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:41,639 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-06 19:43:41,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143433680] [2021-01-06 19:43:41,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:41,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:43:41,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157901358] [2021-01-06 19:43:41,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:43:41,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:41,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:43:41,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:43:41,647 INFO L87 Difference]: Start difference. First operand 9938 states and 13384 transitions. Second operand 5 states. [2021-01-06 19:43:42,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:42,571 INFO L93 Difference]: Finished difference Result 17802 states and 24168 transitions. [2021-01-06 19:43:42,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:43:42,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2021-01-06 19:43:42,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:42,603 INFO L225 Difference]: With dead ends: 17802 [2021-01-06 19:43:42,604 INFO L226 Difference]: Without dead ends: 14384 [2021-01-06 19:43:42,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:43:42,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14384 states. [2021-01-06 19:43:43,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14384 to 12792. [2021-01-06 19:43:43,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12792 states. [2021-01-06 19:43:43,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12792 states to 12792 states and 17188 transitions. [2021-01-06 19:43:43,431 INFO L78 Accepts]: Start accepts. Automaton has 12792 states and 17188 transitions. Word has length 66 [2021-01-06 19:43:43,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:43,431 INFO L481 AbstractCegarLoop]: Abstraction has 12792 states and 17188 transitions. [2021-01-06 19:43:43,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:43:43,431 INFO L276 IsEmpty]: Start isEmpty. Operand 12792 states and 17188 transitions. [2021-01-06 19:43:43,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 19:43:43,435 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:43,436 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:43:43,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 19:43:43,436 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:43,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:43,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1947762533, now seen corresponding path program 1 times [2021-01-06 19:43:43,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:43,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480517694] [2021-01-06 19:43:43,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:43,507 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 19:43:43,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480517694] [2021-01-06 19:43:43,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:43,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:43:43,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131206913] [2021-01-06 19:43:43,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:43:43,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:43,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:43:43,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:43:43,512 INFO L87 Difference]: Start difference. First operand 12792 states and 17188 transitions. Second operand 5 states. [2021-01-06 19:43:44,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:44,395 INFO L93 Difference]: Finished difference Result 19194 states and 26002 transitions. [2021-01-06 19:43:44,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:43:44,396 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2021-01-06 19:43:44,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:44,429 INFO L225 Difference]: With dead ends: 19194 [2021-01-06 19:43:44,429 INFO L226 Difference]: Without dead ends: 16624 [2021-01-06 19:43:44,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:43:44,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16624 states. [2021-01-06 19:43:45,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16624 to 14714. [2021-01-06 19:43:45,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14714 states. [2021-01-06 19:43:45,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14714 states to 14714 states and 19772 transitions. [2021-01-06 19:43:45,324 INFO L78 Accepts]: Start accepts. Automaton has 14714 states and 19772 transitions. Word has length 67 [2021-01-06 19:43:45,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:45,324 INFO L481 AbstractCegarLoop]: Abstraction has 14714 states and 19772 transitions. [2021-01-06 19:43:45,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:43:45,324 INFO L276 IsEmpty]: Start isEmpty. Operand 14714 states and 19772 transitions. [2021-01-06 19:43:45,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-01-06 19:43:45,329 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:45,329 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] [2021-01-06 19:43:45,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 19:43:45,331 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:45,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:45,333 INFO L82 PathProgramCache]: Analyzing trace with hash 707985229, now seen corresponding path program 1 times [2021-01-06 19:43:45,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:45,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795803553] [2021-01-06 19:43:45,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:45,453 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:45,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795803553] [2021-01-06 19:43:45,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:45,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:43:45,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789849779] [2021-01-06 19:43:45,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:43:45,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:45,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:43:45,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:45,458 INFO L87 Difference]: Start difference. First operand 14714 states and 19772 transitions. Second operand 3 states. [2021-01-06 19:43:46,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:46,290 INFO L93 Difference]: Finished difference Result 26705 states and 35595 transitions. [2021-01-06 19:43:46,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:43:46,291 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2021-01-06 19:43:46,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:46,328 INFO L225 Difference]: With dead ends: 26705 [2021-01-06 19:43:46,329 INFO L226 Difference]: Without dead ends: 15244 [2021-01-06 19:43:46,345 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 19:43:46,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15244 states. [2021-01-06 19:43:47,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15244 to 14757. [2021-01-06 19:43:47,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14757 states. [2021-01-06 19:43:47,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14757 states to 14757 states and 19497 transitions. [2021-01-06 19:43:47,372 INFO L78 Accepts]: Start accepts. Automaton has 14757 states and 19497 transitions. Word has length 69 [2021-01-06 19:43:47,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:47,373 INFO L481 AbstractCegarLoop]: Abstraction has 14757 states and 19497 transitions. [2021-01-06 19:43:47,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:43:47,373 INFO L276 IsEmpty]: Start isEmpty. Operand 14757 states and 19497 transitions. [2021-01-06 19:43:47,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-01-06 19:43:47,377 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:47,377 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] [2021-01-06 19:43:47,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-06 19:43:47,378 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:47,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:47,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1893885068, now seen corresponding path program 1 times [2021-01-06 19:43:47,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:47,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555823083] [2021-01-06 19:43:47,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:47,453 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:47,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555823083] [2021-01-06 19:43:47,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855514548] [2021-01-06 19:43:47,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:43:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:47,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 19:43:47,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:43:47,714 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:47,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:43:47,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-01-06 19:43:47,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867614749] [2021-01-06 19:43:47,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 19:43:47,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:47,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 19:43:47,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-06 19:43:47,717 INFO L87 Difference]: Start difference. First operand 14757 states and 19497 transitions. Second operand 11 states. [2021-01-06 19:43:49,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:49,188 INFO L93 Difference]: Finished difference Result 36898 states and 48690 transitions. [2021-01-06 19:43:49,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 19:43:49,189 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2021-01-06 19:43:49,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:49,241 INFO L225 Difference]: With dead ends: 36898 [2021-01-06 19:43:49,242 INFO L226 Difference]: Without dead ends: 25820 [2021-01-06 19:43:49,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2021-01-06 19:43:49,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25820 states. [2021-01-06 19:43:50,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25820 to 15021. [2021-01-06 19:43:50,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15021 states. [2021-01-06 19:43:50,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15021 states to 15021 states and 19963 transitions. [2021-01-06 19:43:50,287 INFO L78 Accepts]: Start accepts. Automaton has 15021 states and 19963 transitions. Word has length 70 [2021-01-06 19:43:50,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:50,288 INFO L481 AbstractCegarLoop]: Abstraction has 15021 states and 19963 transitions. [2021-01-06 19:43:50,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 19:43:50,288 INFO L276 IsEmpty]: Start isEmpty. Operand 15021 states and 19963 transitions. [2021-01-06 19:43:50,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-06 19:43:50,292 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:50,292 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:43:50,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-06 19:43:50,502 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:50,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:50,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1644790968, now seen corresponding path program 1 times [2021-01-06 19:43:50,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:50,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963853119] [2021-01-06 19:43:50,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:50,572 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-01-06 19:43:50,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963853119] [2021-01-06 19:43:50,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:50,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:43:50,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034922527] [2021-01-06 19:43:50,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 19:43:50,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:50,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 19:43:50,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:43:50,575 INFO L87 Difference]: Start difference. First operand 15021 states and 19963 transitions. Second operand 6 states. [2021-01-06 19:43:51,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:51,722 INFO L93 Difference]: Finished difference Result 34457 states and 45531 transitions. [2021-01-06 19:43:51,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:43:51,723 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2021-01-06 19:43:51,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:51,764 INFO L225 Difference]: With dead ends: 34457 [2021-01-06 19:43:51,764 INFO L226 Difference]: Without dead ends: 19473 [2021-01-06 19:43:51,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 19:43:51,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19473 states. [2021-01-06 19:43:52,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19473 to 15021. [2021-01-06 19:43:52,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15021 states. [2021-01-06 19:43:52,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15021 states to 15021 states and 19754 transitions. [2021-01-06 19:43:52,860 INFO L78 Accepts]: Start accepts. Automaton has 15021 states and 19754 transitions. Word has length 71 [2021-01-06 19:43:52,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:52,860 INFO L481 AbstractCegarLoop]: Abstraction has 15021 states and 19754 transitions. [2021-01-06 19:43:52,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 19:43:52,861 INFO L276 IsEmpty]: Start isEmpty. Operand 15021 states and 19754 transitions. [2021-01-06 19:43:52,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-06 19:43:52,866 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:52,866 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:43:52,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-06 19:43:52,866 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:52,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:52,867 INFO L82 PathProgramCache]: Analyzing trace with hash 751304630, now seen corresponding path program 1 times [2021-01-06 19:43:52,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:52,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816899580] [2021-01-06 19:43:52,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:52,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816899580] [2021-01-06 19:43:52,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058724369] [2021-01-06 19:43:52,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:43:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:53,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 19:43:53,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:43:53,238 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:53,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:43:53,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-01-06 19:43:53,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845497423] [2021-01-06 19:43:53,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 19:43:53,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:53,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 19:43:53,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-06 19:43:53,242 INFO L87 Difference]: Start difference. First operand 15021 states and 19754 transitions. Second operand 11 states. [2021-01-06 19:43:54,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:54,964 INFO L93 Difference]: Finished difference Result 40755 states and 53427 transitions. [2021-01-06 19:43:54,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 19:43:54,964 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2021-01-06 19:43:54,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:55,021 INFO L225 Difference]: With dead ends: 40755 [2021-01-06 19:43:55,021 INFO L226 Difference]: Without dead ends: 30655 [2021-01-06 19:43:55,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2021-01-06 19:43:55,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30655 states. [2021-01-06 19:43:56,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30655 to 17641. [2021-01-06 19:43:56,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17641 states. [2021-01-06 19:43:56,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17641 states to 17641 states and 23185 transitions. [2021-01-06 19:43:56,269 INFO L78 Accepts]: Start accepts. Automaton has 17641 states and 23185 transitions. Word has length 71 [2021-01-06 19:43:56,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:56,269 INFO L481 AbstractCegarLoop]: Abstraction has 17641 states and 23185 transitions. [2021-01-06 19:43:56,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 19:43:56,269 INFO L276 IsEmpty]: Start isEmpty. Operand 17641 states and 23185 transitions. [2021-01-06 19:43:56,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-06 19:43:56,275 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:56,275 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:43:56,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-06 19:43:56,490 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:56,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:56,491 INFO L82 PathProgramCache]: Analyzing trace with hash -2115610868, now seen corresponding path program 1 times [2021-01-06 19:43:56,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:56,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998781420] [2021-01-06 19:43:56,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:56,578 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:56,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998781420] [2021-01-06 19:43:56,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443684537] [2021-01-06 19:43:56,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:43:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:56,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 19:43:56,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:43:56,819 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:56,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:43:56,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-01-06 19:43:56,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012978997] [2021-01-06 19:43:56,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 19:43:56,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:56,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 19:43:56,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-06 19:43:56,822 INFO L87 Difference]: Start difference. First operand 17641 states and 23185 transitions. Second operand 11 states. [2021-01-06 19:43:58,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:58,341 INFO L93 Difference]: Finished difference Result 38421 states and 50178 transitions. [2021-01-06 19:43:58,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 19:43:58,342 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2021-01-06 19:43:58,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:58,505 INFO L225 Difference]: With dead ends: 38421 [2021-01-06 19:43:58,505 INFO L226 Difference]: Without dead ends: 25750 [2021-01-06 19:43:58,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2021-01-06 19:43:58,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25750 states. [2021-01-06 19:43:59,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25750 to 17971. [2021-01-06 19:43:59,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17971 states. [2021-01-06 19:43:59,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17971 states to 17971 states and 23484 transitions. [2021-01-06 19:43:59,866 INFO L78 Accepts]: Start accepts. Automaton has 17971 states and 23484 transitions. Word has length 71 [2021-01-06 19:43:59,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:59,867 INFO L481 AbstractCegarLoop]: Abstraction has 17971 states and 23484 transitions. [2021-01-06 19:43:59,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 19:43:59,867 INFO L276 IsEmpty]: Start isEmpty. Operand 17971 states and 23484 transitions. [2021-01-06 19:43:59,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-06 19:43:59,873 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:59,873 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-01-06 19:44:00,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:44:00,089 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:00,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:00,090 INFO L82 PathProgramCache]: Analyzing trace with hash -821798225, now seen corresponding path program 1 times [2021-01-06 19:44:00,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:00,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014143768] [2021-01-06 19:44:00,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:00,140 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:44:00,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014143768] [2021-01-06 19:44:00,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:00,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:44:00,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640576598] [2021-01-06 19:44:00,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:44:00,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:00,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:44:00,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:44:00,142 INFO L87 Difference]: Start difference. First operand 17971 states and 23484 transitions. Second operand 3 states. [2021-01-06 19:44:01,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:01,265 INFO L93 Difference]: Finished difference Result 21179 states and 27519 transitions. [2021-01-06 19:44:01,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:44:01,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2021-01-06 19:44:01,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:01,281 INFO L225 Difference]: With dead ends: 21179 [2021-01-06 19:44:01,281 INFO L226 Difference]: Without dead ends: 13740 [2021-01-06 19:44:01,288 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 19:44:01,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13740 states. [2021-01-06 19:44:02,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13740 to 13722. [2021-01-06 19:44:02,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13722 states. [2021-01-06 19:44:02,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13722 states to 13722 states and 17478 transitions. [2021-01-06 19:44:02,090 INFO L78 Accepts]: Start accepts. Automaton has 13722 states and 17478 transitions. Word has length 72 [2021-01-06 19:44:02,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:02,091 INFO L481 AbstractCegarLoop]: Abstraction has 13722 states and 17478 transitions. [2021-01-06 19:44:02,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:44:02,091 INFO L276 IsEmpty]: Start isEmpty. Operand 13722 states and 17478 transitions. [2021-01-06 19:44:02,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-06 19:44:02,096 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:02,096 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:44:02,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-01-06 19:44:02,097 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:02,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:02,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1590063719, now seen corresponding path program 1 times [2021-01-06 19:44:02,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:02,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077296816] [2021-01-06 19:44:02,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:02,279 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:44:02,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077296816] [2021-01-06 19:44:02,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761481858] [2021-01-06 19:44:02,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:44:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:02,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-06 19:44:02,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:44:02,541 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 19:44:02,859 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:44:02,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:44:02,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-01-06 19:44:02,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103039430] [2021-01-06 19:44:02,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 19:44:02,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:02,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 19:44:02,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-01-06 19:44:02,864 INFO L87 Difference]: Start difference. First operand 13722 states and 17478 transitions. Second operand 17 states. [2021-01-06 19:44:07,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:07,329 INFO L93 Difference]: Finished difference Result 46200 states and 58448 transitions. [2021-01-06 19:44:07,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-06 19:44:07,329 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 72 [2021-01-06 19:44:07,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:07,367 INFO L225 Difference]: With dead ends: 46200 [2021-01-06 19:44:07,367 INFO L226 Difference]: Without dead ends: 35687 [2021-01-06 19:44:07,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=457, Invalid=1265, Unknown=0, NotChecked=0, Total=1722 [2021-01-06 19:44:07,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35687 states. [2021-01-06 19:44:08,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35687 to 21539. [2021-01-06 19:44:08,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21539 states. [2021-01-06 19:44:08,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21539 states to 21539 states and 27352 transitions. [2021-01-06 19:44:08,917 INFO L78 Accepts]: Start accepts. Automaton has 21539 states and 27352 transitions. Word has length 72 [2021-01-06 19:44:08,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:08,917 INFO L481 AbstractCegarLoop]: Abstraction has 21539 states and 27352 transitions. [2021-01-06 19:44:08,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 19:44:08,917 INFO L276 IsEmpty]: Start isEmpty. Operand 21539 states and 27352 transitions. [2021-01-06 19:44:08,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-06 19:44:08,922 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:08,922 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:44:09,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-01-06 19:44:09,138 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:09,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:09,139 INFO L82 PathProgramCache]: Analyzing trace with hash -2017409783, now seen corresponding path program 1 times [2021-01-06 19:44:09,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:09,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788105243] [2021-01-06 19:44:09,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:09,350 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:44:09,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788105243] [2021-01-06 19:44:09,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362168008] [2021-01-06 19:44:09,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:44:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:09,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 19:44:09,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:44:09,642 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 19:44:10,006 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 49 [2021-01-06 19:44:10,608 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:44:10,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:44:10,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2021-01-06 19:44:10,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940829334] [2021-01-06 19:44:10,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-06 19:44:10,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:10,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-06 19:44:10,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-01-06 19:44:10,610 INFO L87 Difference]: Start difference. First operand 21539 states and 27352 transitions. Second operand 19 states. [2021-01-06 19:44:11,461 WARN L197 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-01-06 19:44:11,745 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-01-06 19:44:12,052 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-01-06 19:44:12,999 WARN L197 SmtUtils]: Spent 868.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 129 [2021-01-06 19:44:13,450 WARN L197 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-01-06 19:44:13,931 WARN L197 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-01-06 19:44:14,481 WARN L197 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-01-06 19:44:14,741 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-01-06 19:44:15,076 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-01-06 19:44:15,664 WARN L197 SmtUtils]: Spent 526.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2021-01-06 19:44:16,073 WARN L197 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2021-01-06 19:44:16,514 WARN L197 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2021-01-06 19:44:16,907 WARN L197 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-01-06 19:44:17,264 WARN L197 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-01-06 19:44:18,297 WARN L197 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 131 [2021-01-06 19:44:18,925 WARN L197 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 132 [2021-01-06 19:44:19,495 WARN L197 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-01-06 19:44:20,285 WARN L197 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 123 [2021-01-06 19:44:21,556 WARN L197 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 142 DAG size of output: 134 [2021-01-06 19:44:22,317 WARN L197 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 124 [2021-01-06 19:44:22,694 WARN L197 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-01-06 19:44:23,340 WARN L197 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 121 [2021-01-06 19:44:23,651 WARN L197 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-01-06 19:44:24,667 WARN L197 SmtUtils]: Spent 857.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 126 [2021-01-06 19:44:25,039 WARN L197 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-01-06 19:44:25,498 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-01-06 19:44:26,347 WARN L197 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 134 [2021-01-06 19:44:26,743 WARN L197 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-01-06 19:44:27,729 WARN L197 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 126 [2021-01-06 19:44:28,242 WARN L197 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-01-06 19:44:29,201 WARN L197 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2021-01-06 19:44:29,863 WARN L197 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-01-06 19:44:30,301 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-01-06 19:44:31,197 WARN L197 SmtUtils]: Spent 824.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-01-06 19:44:32,716 WARN L197 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 119 [2021-01-06 19:44:33,646 WARN L197 SmtUtils]: Spent 810.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 137 [2021-01-06 19:44:34,476 WARN L197 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 111 [2021-01-06 19:44:34,885 WARN L197 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2021-01-06 19:44:35,868 WARN L197 SmtUtils]: Spent 901.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 140 [2021-01-06 19:44:36,648 WARN L197 SmtUtils]: Spent 544.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-01-06 19:44:37,627 WARN L197 SmtUtils]: Spent 899.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 122 [2021-01-06 19:44:38,154 WARN L197 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-01-06 19:44:39,237 WARN L197 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 140 DAG size of output: 132 [2021-01-06 19:44:40,231 WARN L197 SmtUtils]: Spent 871.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2021-01-06 19:44:40,844 WARN L197 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2021-01-06 19:44:41,558 WARN L197 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 114 [2021-01-06 19:44:42,433 WARN L197 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2021-01-06 19:44:43,282 WARN L197 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 124 [2021-01-06 19:44:43,520 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-01-06 19:44:44,061 WARN L197 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2021-01-06 19:44:45,327 WARN L197 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 143 DAG size of output: 135 [2021-01-06 19:44:45,756 WARN L197 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2021-01-06 19:44:47,155 WARN L197 SmtUtils]: Spent 997.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 127 [2021-01-06 19:44:47,594 WARN L197 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-01-06 19:44:48,071 WARN L197 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2021-01-06 19:44:48,341 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-01-06 19:44:48,942 WARN L197 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2021-01-06 19:44:49,252 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-01-06 19:44:49,711 WARN L197 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-01-06 19:44:50,880 WARN L197 SmtUtils]: Spent 969.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 137 [2021-01-06 19:44:52,210 WARN L197 SmtUtils]: Spent 963.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 129 [2021-01-06 19:44:52,816 WARN L197 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2021-01-06 19:44:53,179 WARN L197 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-01-06 19:44:53,539 WARN L197 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-01-06 19:44:54,068 WARN L197 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-01-06 19:44:54,489 WARN L197 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-01-06 19:44:55,278 WARN L197 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-01-06 19:44:55,882 WARN L197 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2021-01-06 19:44:56,154 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-01-06 19:44:56,846 WARN L197 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2021-01-06 19:44:57,317 WARN L197 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2021-01-06 19:44:57,618 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-01-06 19:44:58,478 WARN L197 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2021-01-06 19:44:58,770 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-01-06 19:44:59,439 WARN L197 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 94 [2021-01-06 19:45:00,025 WARN L197 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2021-01-06 19:45:00,711 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-01-06 19:45:01,713 WARN L197 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2021-01-06 19:45:02,157 WARN L197 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-01-06 19:45:02,958 WARN L197 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2021-01-06 19:45:03,566 WARN L197 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2021-01-06 19:45:04,343 WARN L197 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2021-01-06 19:45:04,688 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-01-06 19:45:05,128 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-01-06 19:45:06,596 WARN L197 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 133 DAG size of output: 125 [2021-01-06 19:45:08,355 WARN L197 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 136 DAG size of output: 128 [2021-01-06 19:45:09,228 WARN L197 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-01-06 19:45:09,944 WARN L197 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-01-06 19:45:10,479 WARN L197 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-01-06 19:45:10,848 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2021-01-06 19:45:11,749 WARN L197 SmtUtils]: Spent 830.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-01-06 19:45:12,089 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-01-06 19:45:12,773 WARN L197 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2021-01-06 19:45:13,124 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-01-06 19:45:13,424 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2021-01-06 19:45:14,085 WARN L197 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-01-06 19:45:15,203 WARN L197 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2021-01-06 19:45:15,545 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-01-06 19:45:15,993 WARN L197 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-01-06 19:45:16,584 WARN L197 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2021-01-06 19:45:16,761 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-01-06 19:45:17,384 WARN L197 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-01-06 19:45:18,074 WARN L197 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-01-06 19:45:18,744 WARN L197 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2021-01-06 19:45:19,421 WARN L197 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-01-06 19:45:20,096 WARN L197 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-01-06 19:45:20,815 WARN L197 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2021-01-06 19:45:21,239 WARN L197 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-01-06 19:45:22,401 WARN L197 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2021-01-06 19:45:22,716 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2021-01-06 19:45:23,386 WARN L197 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-01-06 19:45:24,226 WARN L197 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2021-01-06 19:45:24,574 WARN L197 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-01-06 19:45:24,908 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-01-06 19:45:26,086 WARN L197 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 94 [2021-01-06 19:45:26,395 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-01-06 19:45:26,582 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-01-06 19:45:27,454 WARN L197 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-01-06 19:45:28,246 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-01-06 19:45:28,418 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-01-06 19:45:29,188 WARN L197 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-01-06 19:45:30,012 WARN L197 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-01-06 19:45:31,007 WARN L197 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-01-06 19:45:32,376 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-01-06 19:45:33,016 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-01-06 19:45:43,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:45:43,094 INFO L93 Difference]: Finished difference Result 116674 states and 146964 transitions. [2021-01-06 19:45:43,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2021-01-06 19:45:43,097 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 72 [2021-01-06 19:45:43,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:45:43,216 INFO L225 Difference]: With dead ends: 116674 [2021-01-06 19:45:43,217 INFO L226 Difference]: Without dead ends: 96958 [2021-01-06 19:45:43,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13806 ImplicationChecksByTransitivity, 73.0s TimeCoverageRelationStatistics Valid=5050, Invalid=24706, Unknown=0, NotChecked=0, Total=29756 [2021-01-06 19:45:43,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96958 states. [2021-01-06 19:45:47,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96958 to 25828. [2021-01-06 19:45:47,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25828 states. [2021-01-06 19:45:47,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25828 states to 25828 states and 32991 transitions. [2021-01-06 19:45:47,066 INFO L78 Accepts]: Start accepts. Automaton has 25828 states and 32991 transitions. Word has length 72 [2021-01-06 19:45:47,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:45:47,066 INFO L481 AbstractCegarLoop]: Abstraction has 25828 states and 32991 transitions. [2021-01-06 19:45:47,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-01-06 19:45:47,066 INFO L276 IsEmpty]: Start isEmpty. Operand 25828 states and 32991 transitions. [2021-01-06 19:45:47,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-06 19:45:47,072 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:45:47,072 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-01-06 19:45:47,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:45:47,286 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:45:47,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:45:47,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1788492483, now seen corresponding path program 1 times [2021-01-06 19:45:47,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:45:47,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272046399] [2021-01-06 19:45:47,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:45:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:45:47,339 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:45:47,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272046399] [2021-01-06 19:45:47,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:45:47,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:45:47,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041225258] [2021-01-06 19:45:47,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:45:47,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:45:47,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:45:47,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:45:47,341 INFO L87 Difference]: Start difference. First operand 25828 states and 32991 transitions. Second operand 3 states. [2021-01-06 19:45:50,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:45:50,497 INFO L93 Difference]: Finished difference Result 32288 states and 41143 transitions. [2021-01-06 19:45:50,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:45:50,501 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2021-01-06 19:45:50,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:45:50,526 INFO L225 Difference]: With dead ends: 32288 [2021-01-06 19:45:50,526 INFO L226 Difference]: Without dead ends: 24527 [2021-01-06 19:45:50,536 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 19:45:50,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24527 states. [2021-01-06 19:45:54,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24527 to 24525. [2021-01-06 19:45:54,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24525 states. [2021-01-06 19:45:54,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24525 states to 24525 states and 30792 transitions. [2021-01-06 19:45:54,164 INFO L78 Accepts]: Start accepts. Automaton has 24525 states and 30792 transitions. Word has length 73 [2021-01-06 19:45:54,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:45:54,165 INFO L481 AbstractCegarLoop]: Abstraction has 24525 states and 30792 transitions. [2021-01-06 19:45:54,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:45:54,165 INFO L276 IsEmpty]: Start isEmpty. Operand 24525 states and 30792 transitions. [2021-01-06 19:45:54,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-06 19:45:54,169 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:45:54,169 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] [2021-01-06 19:45:54,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-01-06 19:45:54,169 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:45:54,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:45:54,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1514033179, now seen corresponding path program 1 times [2021-01-06 19:45:54,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:45:54,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838025460] [2021-01-06 19:45:54,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:45:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:45:54,227 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 19:45:54,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838025460] [2021-01-06 19:45:54,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:45:54,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:45:54,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331580639] [2021-01-06 19:45:54,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:45:54,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:45:54,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:45:54,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:45:54,229 INFO L87 Difference]: Start difference. First operand 24525 states and 30792 transitions. Second operand 3 states. [2021-01-06 19:45:59,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:45:59,733 INFO L93 Difference]: Finished difference Result 47488 states and 59532 transitions. [2021-01-06 19:45:59,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:45:59,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2021-01-06 19:45:59,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:45:59,772 INFO L225 Difference]: With dead ends: 47488 [2021-01-06 19:45:59,773 INFO L226 Difference]: Without dead ends: 39140 [2021-01-06 19:45:59,781 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 19:45:59,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39140 states. [2021-01-06 19:46:03,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39140 to 28721. [2021-01-06 19:46:03,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28721 states. [2021-01-06 19:46:04,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28721 states to 28721 states and 35907 transitions. [2021-01-06 19:46:04,011 INFO L78 Accepts]: Start accepts. Automaton has 28721 states and 35907 transitions. Word has length 74 [2021-01-06 19:46:04,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:04,011 INFO L481 AbstractCegarLoop]: Abstraction has 28721 states and 35907 transitions. [2021-01-06 19:46:04,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:46:04,011 INFO L276 IsEmpty]: Start isEmpty. Operand 28721 states and 35907 transitions. [2021-01-06 19:46:04,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-06 19:46:04,015 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:04,015 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:46:04,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-01-06 19:46:04,015 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:04,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:04,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1814577582, now seen corresponding path program 1 times [2021-01-06 19:46:04,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:04,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802465494] [2021-01-06 19:46:04,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:04,072 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:04,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802465494] [2021-01-06 19:46:04,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:04,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:46:04,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619994265] [2021-01-06 19:46:04,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:46:04,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:04,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:46:04,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:04,074 INFO L87 Difference]: Start difference. First operand 28721 states and 35907 transitions. Second operand 3 states. [2021-01-06 19:46:07,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:07,887 INFO L93 Difference]: Finished difference Result 55110 states and 68530 transitions. [2021-01-06 19:46:07,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:46:07,890 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2021-01-06 19:46:07,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:07,915 INFO L225 Difference]: With dead ends: 55110 [2021-01-06 19:46:07,916 INFO L226 Difference]: Without dead ends: 26452 [2021-01-06 19:46:07,926 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 19:46:07,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26452 states. [2021-01-06 19:46:11,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26452 to 25829. [2021-01-06 19:46:11,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25829 states. [2021-01-06 19:46:11,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25829 states to 25829 states and 31350 transitions. [2021-01-06 19:46:11,760 INFO L78 Accepts]: Start accepts. Automaton has 25829 states and 31350 transitions. Word has length 74 [2021-01-06 19:46:11,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:11,760 INFO L481 AbstractCegarLoop]: Abstraction has 25829 states and 31350 transitions. [2021-01-06 19:46:11,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:46:11,760 INFO L276 IsEmpty]: Start isEmpty. Operand 25829 states and 31350 transitions. [2021-01-06 19:46:11,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-06 19:46:11,763 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:11,763 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:46:11,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-01-06 19:46:11,763 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:11,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:11,763 INFO L82 PathProgramCache]: Analyzing trace with hash 752874377, now seen corresponding path program 1 times [2021-01-06 19:46:11,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:11,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465094288] [2021-01-06 19:46:11,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:13,884 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:13,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465094288] [2021-01-06 19:46:13,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165396738] [2021-01-06 19:46:13,885 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:46:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:13,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-06 19:46:13,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:46:15,438 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 19:46:15,988 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 41 [2021-01-06 19:46:16,746 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-01-06 19:46:16,811 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 19:46:18,677 WARN L197 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 2632 DAG size of output: 2149 [2021-01-06 19:46:20,896 WARN L838 $PredicateComparison]: unable to prove that (and (<= 0 c_~id3~0) (<= 0 c_~id2~0) (let ((.cse0 (mod c_~id2~0 256))) (or (and (= .cse0 (+ c_~p2_old~0 256)) (< 127 .cse0)) (and (<= .cse0 127) (= .cse0 c_~p2_old~0)))) (not (= c_~id3~0 c_~id2~0)) (<= c_~id3~0 127) (let ((.cse449 (* c_~p1_old~0 (- 1)))) (let ((.cse100 (div (+ .cse449 127) 256))) (let ((.cse260 (+ .cse100 1)) (.cse451 (* c_~id2~0 (- 1)))) (or (let ((.cse446 (+ .cse451 511)) (.cse450 (+ c_~id2~0 (- 1)))) (let ((.cse57 (div .cse450 (- 256))) (.cse45 (div (+ .cse451 383) (- 256))) (.cse144 (div .cse446 256)) (.cse60 (div .cse450 256)) (.cse1 (div (+ c_~id2~0 127) 256))) (let ((.cse143 (div (+ .cse449 255) 256)) (.cse128 (div (+ .cse449 c_~id2~0 (- 1)) 256)) (.cse369 (+ .cse1 1)) (.cse445 (+ .cse60 1)) (.cse385 (+ .cse144 1)) (.cse448 (* .cse45 (- 1))) (.cse447 (* .cse57 (- 1)))) (let ((.cse202 (div .cse447 (- 2))) (.cse104 (div (+ .cse448 .cse447) (- 2))) (.cse32 (div (+ .cse448 .cse60) (- 2))) (.cse43 (div (+ .cse447 2) (- 2))) (.cse173 (div (+ .cse60 .cse144) (- 2))) (.cse160 (div (+ .cse448 .cse1 .cse60) (- 2))) (.cse88 (div (+ .cse448 .cse447 .cse60 1) (- 2))) (.cse198 (* 2 .cse100)) (.cse296 (div .cse60 (- 2))) (.cse28 (div (+ .cse448 .cse447 .cse1) (- 2))) (.cse97 (* 3 .cse57)) (.cse255 (div .cse385 (- 2))) (.cse10 (div (+ .cse447 1) (- 2))) (.cse148 (div (+ .cse1 .cse60 .cse144) (- 2))) (.cse322 (div .cse445 (- 2))) (.cse289 (div (+ .cse447 .cse60 .cse144 1) (- 2))) (.cse139 (div .cse144 (- 2))) (.cse225 (* 2 .cse45)) (.cse96 (div .cse369 (- 2))) (.cse46 (* 2 .cse57)) (.cse199 (div (+ .cse447 .cse1 .cse144) (- 2))) (.cse83 (div (+ .cse448 1) (- 2))) (.cse252 (div (+ .cse447 .cse144) (- 2))) (.cse18 (div .cse446 (- 256))) (.cse2 (* 2 .cse128)) (.cse3 (* 3 .cse144)) (.cse58 (* 2 .cse143)) (.cse47 (div .cse1 (- 2))) (.cse59 (* 2 .cse1)) (.cse101 (* 2 .cse144))) (let ((.cse70 (+ .cse59 .cse60 .cse128 .cse101 1)) (.cse108 (+ .cse100 .cse128 .cse144 3)) (.cse166 (+ .cse100 .cse60 .cse128 .cse144 3)) (.cse55 (+ .cse45 .cse47)) (.cse125 (+ .cse58 .cse1 .cse101 2)) (.cse220 (+ .cse143 .cse100 .cse59 1)) (.cse208 (+ .cse143 .cse60 .cse3 2)) (.cse170 (+ .cse1 .cse144 1)) (.cse227 (+ .cse1 .cse60 .cse128 .cse3 1)) (.cse181 (+ .cse2 .cse144 3)) (.cse127 (+ .cse143 .cse100 .cse60 .cse144 3)) (.cse76 (+ .cse1 .cse2 .cse101 1)) (.cse286 (+ .cse45 .cse252 .cse57 .cse18)) (.cse258 (+ .cse58 .cse1 .cse144 2)) (.cse203 (+ .cse143 .cse100 .cse1 .cse60 2)) (.cse82 (+ .cse60 .cse2 .cse101 3)) (.cse320 (+ .cse1 .cse60 .cse128 .cse101 2)) (.cse40 (+ .cse45 .cse83)) (.cse163 (+ .cse45 .cse199)) (.cse280 (+ .cse143 .cse60 .cse128 .cse144 2)) (.cse51 (+ .cse143 .cse60 .cse128 2)) (.cse42 (+ .cse143 .cse59 .cse60 1)) (.cse245 (+ .cse143 .cse100 1)) (.cse200 (+ .cse143 .cse1 .cse128 .cse101 1)) (.cse62 (+ .cse143 .cse1 .cse128 .cse144 2)) (.cse52 (+ .cse225 .cse96 .cse46 .cse18)) (.cse329 (+ .cse58 .cse1 2)) (.cse4 (+ .cse46 .cse18 .cse83)) (.cse297 (+ .cse45 .cse199 .cse57 .cse18)) (.cse41 (+ .cse225 .cse57 .cse139 .cse18)) (.cse159 (+ .cse59 .cse128 1)) (.cse299 (+ .cse58 .cse60 2)) (.cse13 (+ .cse60 .cse128 .cse101 3)) (.cse243 (+ .cse58 .cse144 2)) (.cse341 (+ .cse143 .cse100 2)) (.cse288 (+ .cse100 .cse1 .cse128 2)) (.cse205 (+ .cse143 .cse100 .cse1 .cse144 2)) (.cse352 (+ .cse128 .cse144 3)) (.cse109 (+ .cse45 .cse57 .cse289)) (.cse91 (+ .cse100 .cse59 .cse60 .cse144 1)) (.cse230 (+ .cse45 .cse322)) (.cse71 (+ .cse45 .cse289)) (.cse240 (+ .cse143 .cse1 .cse60 .cse128 .cse144 1)) (.cse103 (+ .cse143 .cse1 .cse144 2)) (.cse216 (+ .cse143 .cse128 1)) (.cse271 (+ .cse143 .cse100 .cse1 2)) (.cse145 (+ .cse45 .cse57 .cse148)) (.cse89 (+ .cse57 .cse10)) (.cse336 (+ .cse128 3)) (.cse363 (+ .cse143 .cse60 .cse128 3)) (.cse268 (+ .cse225 .cse46 .cse139 .cse18)) (.cse298 (+ .cse143 .cse128 3)) (.cse311 (+ .cse100 .cse1 .cse60 2)) (.cse224 (+ .cse45 .cse46 .cse18 .cse255)) (.cse301 (+ .cse60 .cse128 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.cse371 .cse39) (< .cse6 .cse269) (< .cse34 .cse15) (< .cse63 (+ .cse1 .cse60 1)) (< .cse136 .cse194) (< .cse67 .cse11) (< .cse212 .cse68) (< .cse423 .cse132) (< .cse313 .cse56) (< .cse173 .cse11) (< .cse155 .cse5) (< .cse14 .cse176) (< .cse138 .cse201) (< .cse178 .cse21) (< .cse57 (+ .cse143 .cse1 .cse128 .cse3 1)) (< .cse81 .cse416) (< .cse99 (+ .cse60 .cse128 .cse3 3)) (< .cse292 .cse390) (< .cse158 (+ .cse100 .cse59 .cse60 1)) (< .cse275 .cse132) (< .cse141 .cse434) (< .cse318 .cse19) (< .cse171 .cse90) (< .cse275 .cse197) (< .cse325 .cse39) (< .cse362 .cse147) (< .cse259 .cse50) (< .cse104 .cse15) (< .cse249 .cse50) (< 0 .cse294) (< .cse69 .cse9) (< .cse96 .cse35) (< .cse360 .cse415) (< .cse6 .cse295) (< .cse26 .cse35) (< .cse96 .cse11) (< .cse18 .cse391) (< (+ .cse252 .cse46 .cse18) .cse48) (< .cse275 .cse196) (< .cse14 .cse356) (< .cse437 .cse56) (< .cse215 .cse317) (< .cse63 .cse408) (< .cse43 .cse11) (< .cse184 .cse56) (< .cse319 .cse132) (< .cse6 .cse106) (< .cse328 .cse78) (< .cse34 .cse133) (< .cse18 .cse281) (< (+ .cse97 .cse18 .cse43) .cse122) (< .cse134 .cse68) (< .cse238 .cse120) (< .cse83 .cse75) (< .cse131 .cse56) (< .cse81 .cse246) (< .cse377 .cse39) (< .cse83 .cse130) (< .cse12 .cse382) (< (+ .cse45 .cse252 .cse46 .cse18) .cse21) (< (+ .cse45 .cse199 .cse46) .cse48) (< .cse57 (+ .cse143 .cse100 .cse144 1)) (< .cse18 .cse332) (< .cse289 .cse39) (< .cse273 .cse232) (< (+ .cse45 .cse46 .cse104) .cse48) (< .cse22 .cse368) (< (+ .cse45 .cse239 .cse139 .cse18) .cse442) (< .cse113 .cse35) (< .cse212 .cse21) (< .cse14 .cse77) (< .cse392 .cse56) (< .cse63 .cse274) (< .cse247 .cse386) (< .cse290 .cse94) (< .cse296 .cse11) (< .cse81 .cse412) (< .cse431 .cse72) (< .cse273 .cse9) (< .cse417 .cse90) (< .cse46 .cse236) (< .cse344 .cse11) (< .cse57 .cse443) (< .cse322 .cse39) (< .cse6 .cse256) (< .cse423 .cse196) (< .cse249 .cse56) (< .cse57 (+ .cse198 .cse60 .cse144 3)) (< .cse16 .cse9) (< .cse418 .cse72) (< .cse188 .cse50) (< .cse79 .cse375) (< .cse57 (+ .cse198 .cse1 .cse144 2)) (< (+ .cse202 .cse46 .cse18) .cse48) (< .cse261 .cse56) (< .cse102 .cse21) (< .cse184 .cse19) (< .cse192 .cse75) (< .cse322 .cse11) (< .cse10 .cse33) (< .cse22 .cse29) (< .cse85 .cse281) (< .cse119 .cse403) (< .cse157 .cse90) (< .cse444 .cse53) (< .cse439 .cse56) (< .cse354 .cse84) (< .cse188 .cse56) (< .cse107 .cse137) (< .cse359 .cse174) (< 0 (+ .cse60 .cse2 .cse101 2)) (< .cse292 .cse190) (< .cse86 .cse232) (< .cse92 .cse50) (< .cse45 .cse176) (< .cse81 .cse186) (< .cse303 .cse68) (< .cse164 .cse443) (< .cse14 .cse433) (< .cse26 .cse33) (< 0 .cse35) (< .cse18 (+ .cse198 .cse1 .cse60 2)) (< 0 .cse38) (< .cse396 .cse25) (< .cse444 .cse72) (< .cse422 .cse72) (< .cse45 .cse146) (< .cse141 .cse305) (< 0 .cse331) (< .cse57 .cse90) (< .cse355 .cse21) (< .cse157 .cse196) (< .cse138 .cse428) (< .cse129 .cse56) (< .cse231 .cse37) (< .cse117 .cse72) (< .cse85 .cse420) (< (+ .cse45 .cse252 .cse46) .cse48) (< .cse96 .cse44) (< .cse85 .cse314) (< .cse225 .cse440) (< .cse34 .cse11) (< (+ .cse45 .cse18 .cse173) .cse9) (< .cse79 .cse23) (< .cse313 .cse19) (< .cse18 .cse278) (< .cse272 .cse132) (< .cse129 .cse75) (< .cse275 .cse430) (< .cse335 .cse90) (< .cse14 1) (< .cse296 .cse35) (< .cse419 .cse21) (< .cse195 .cse15) (< (+ .cse45 .cse199 .cse46 .cse18) .cse21) (< .cse354 .cse50) (< .cse267 .cse39) (< .cse151 .cse399) (< .cse259 .cse56) (< .cse164 .cse257) (< .cse88 .cse11) (< .cse63 (+ .cse100 .cse1 .cse60 .cse128 2)) (< .cse252 .cse15) (< .cse182 .cse68) (< .cse264 .cse15) (< .cse63 .cse426) (< .cse34 .cse39) (< (+ .cse46 .cse173) .cse122) (< .cse397 .cse11) (< .cse337 .cse21) (< 0 .cse393) (< .cse104 .cse35) (< .cse160 .cse35) (< .cse138 .cse140) (< .cse30 .cse132) (< .cse67 .cse15) (< (+ .cse46 .cse10) .cse122) (< .cse225 .cse207) (< .cse234 .cse330) (< .cse400 .cse11) (< .cse139 .cse53) (< .cse411 .cse56) (< .cse191 .cse9) (< .cse24 .cse441) (< .cse18 (+ .cse198 .cse1 1)) (< .cse374 .cse5) (< .cse195 .cse68) (< .cse14 .cse11) (< .cse49 .cse19) (< .cse18 (+ .cse143 .cse100 .cse1 .cse60 1)) (< .cse275 .cse404) (< .cse107 .cse388) (< .cse354 .cse75) (< .cse45 .cse369) (< .cse61 .cse435) (< .cse222 (+ .cse143 .cse60 .cse3 3)) (< .cse85 .cse121) (< (+ .cse45 .cse46 .cse148) .cse48) (< .cse6 .cse384) (< .cse238 .cse84) (< .cse81 .cse110) (< (+ .cse46 .cse148) .cse122) (< .cse402 .cse56) (< .cse303 .cse11) (< .cse97 .cse367) (< .cse290 .cse19) (< .cse83 .cse94) (< .cse265 .cse53) (< .cse18 .cse331) (< (+ .cse46 .cse88) .cse122) (< (+ .cse225 .cse239 .cse139) .cse442) (< .cse344 .cse21) (< .cse43 .cse162) (< .cse315 .cse56) (< .cse438 .cse56) (< .cse86 .cse194) (< .cse338 .cse132) (< .cse135 .cse11) (< .cse322 .cse15) (< .cse275 .cse31) (< (+ .cse225 .cse96 .cse97) .cse48) (< .cse362 .cse80) (< .cse115 .cse7) (< .cse138 .cse441) (< .cse231 .cse116) (< (+ .cse199 .cse46 .cse18) .cse48) (< (+ .cse46 .cse18 .cse104) .cse48) (< .cse172 .cse68) (< .cse12 .cse21) (< .cse237 .cse84) (< .cse252 .cse39) (< .cse328 .cse388) (< .cse57 (+ .cse143 .cse128 .cse101 1)) (< .cse20 .cse68) (< .cse335 .cse132) (< .cse409 .cse68) (< .cse57 .cse326) (< .cse135 .cse15) (< .cse57 (+ .cse1 .cse101 1)) (< .cse107 .cse223) (< .cse229 .cse90) (< .cse18 .cse445) (< .cse139 .cse19) (< .cse46 (+ .cse58 .cse60 .cse101 2)) (< .cse359 .cse132) (< .cse378 .cse72) (< .cse316 .cse68) (< .cse202 .cse33))))))) (and (< 0 .cse260) (< (div (+ .cse451 126) (- 256)) 1))))))) is different from false [2021-01-06 19:46:21,753 WARN L197 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 2149 DAG size of output: 2149 [2021-01-06 19:46:22,569 WARN L197 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:23,316 WARN L197 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:24,010 WARN L197 SmtUtils]: Spent 668.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:24,753 WARN L197 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 2149 DAG size of output: 2149 [2021-01-06 19:46:25,486 WARN L197 SmtUtils]: Spent 676.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:26,250 WARN L197 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:27,079 WARN L197 SmtUtils]: Spent 810.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:27,759 WARN L197 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 2149 DAG size of output: 2149 [2021-01-06 19:46:28,564 WARN L197 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:29,250 WARN L197 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:29,982 WARN L197 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:30,665 WARN L197 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 2149 DAG size of output: 2149 [2021-01-06 19:46:31,452 WARN L197 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:32,154 WARN L197 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:32,829 WARN L197 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:33,573 WARN L197 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 2149 DAG size of output: 2149 [2021-01-06 19:46:34,303 WARN L197 SmtUtils]: Spent 674.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:35,033 WARN L197 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:35,714 WARN L197 SmtUtils]: Spent 662.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:36,393 WARN L197 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 2149 DAG size of output: 2149 [2021-01-06 19:46:37,175 WARN L197 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:37,834 WARN L197 SmtUtils]: Spent 647.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:38,550 WARN L197 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:39,222 WARN L197 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 2149 DAG size of output: 2149 [2021-01-06 19:46:39,943 WARN L197 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:40,659 WARN L197 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:41,336 WARN L197 SmtUtils]: Spent 660.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:42,020 WARN L197 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 2149 DAG size of output: 2149 [2021-01-06 19:46:42,764 WARN L197 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:43,428 WARN L197 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:44,093 WARN L197 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:44,784 WARN L197 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 2149 DAG size of output: 2149 [2021-01-06 19:46:45,516 WARN L197 SmtUtils]: Spent 677.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:46,181 WARN L197 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:46,853 WARN L197 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:47,579 WARN L197 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 2149 DAG size of output: 2149 [2021-01-06 19:46:48,315 WARN L197 SmtUtils]: Spent 674.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:48,982 WARN L197 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:49,657 WARN L197 SmtUtils]: Spent 656.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:50,345 WARN L197 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 2149 DAG size of output: 2149 [2021-01-06 19:46:51,077 WARN L197 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:51,738 WARN L197 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:52,405 WARN L197 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:53,092 WARN L197 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 2149 DAG size of output: 2149 [2021-01-06 19:46:53,809 WARN L197 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:54,468 WARN L197 SmtUtils]: Spent 647.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:55,140 WARN L197 SmtUtils]: Spent 649.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:55,844 WARN L197 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 2149 DAG size of output: 2149 [2021-01-06 19:46:56,556 WARN L197 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:57,219 WARN L197 SmtUtils]: Spent 650.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:57,882 WARN L197 SmtUtils]: Spent 646.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:58,592 WARN L197 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 2149 DAG size of output: 2149 [2021-01-06 19:46:59,316 WARN L197 SmtUtils]: Spent 668.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:46:59,996 WARN L197 SmtUtils]: Spent 668.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:47:00,658 WARN L197 SmtUtils]: Spent 644.00 ms on a formula simplification that was a NOOP. DAG size: 2149 [2021-01-06 19:47:01,484 WARN L197 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 2152 DAG size of output: 2152 [2021-01-06 19:47:02,256 WARN L197 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 2153 [2021-01-06 19:47:02,928 WARN L197 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 2153 [2021-01-06 19:47:02,994 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 19:47:12,277 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 19:47:29,121 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug.