/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.3.1.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 09:49:11,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 09:49:11,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 09:49:11,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 09:49:11,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 09:49:11,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 09:49:11,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 09:49:11,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 09:49:11,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 09:49:11,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 09:49:11,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 09:49:11,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 09:49:11,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 09:49:11,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 09:49:11,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 09:49:11,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 09:49:11,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 09:49:11,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 09:49:11,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 09:49:11,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 09:49:11,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 09:49:11,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 09:49:11,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 09:49:11,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 09:49:11,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 09:49:11,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 09:49:11,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 09:49:11,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 09:49:11,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 09:49:11,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 09:49:11,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 09:49:11,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 09:49:11,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 09:49:11,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 09:49:11,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 09:49:11,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 09:49:11,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 09:49:11,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 09:49:11,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 09:49:11,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 09:49:11,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 09:49:11,727 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 09:49:11,782 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 09:49:11,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 09:49:11,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 09:49:11,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 09:49:11,787 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 09:49:11,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 09:49:11,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 09:49:11,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 09:49:11,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 09:49:11,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 09:49:11,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 09:49:11,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 09:49:11,790 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 09:49:11,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 09:49:11,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 09:49:11,792 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 09:49:11,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 09:49:11,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:49:11,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 09:49:11,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 09:49:11,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 09:49:11,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 09:49:11,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 09:49:11,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 09:49:11,795 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 09:49:11,795 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 09:49:12,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 09:49:12,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 09:49:12,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 09:49:12,222 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 09:49:12,223 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 09:49:12,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c [2020-12-23 09:49:12,320 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e11a0615d/332be5eae3c84cc19b7edecfe8135a90/FLAG0b1772fa2 [2020-12-23 09:49:13,011 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 09:49:13,012 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c [2020-12-23 09:49:13,027 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e11a0615d/332be5eae3c84cc19b7edecfe8135a90/FLAG0b1772fa2 [2020-12-23 09:49:13,297 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e11a0615d/332be5eae3c84cc19b7edecfe8135a90 [2020-12-23 09:49:13,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 09:49:13,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 09:49:13,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 09:49:13,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 09:49:13,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 09:49:13,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:49:13" (1/1) ... [2020-12-23 09:49:13,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6702c93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:49:13, skipping insertion in model container [2020-12-23 09:49:13,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:49:13" (1/1) ... [2020-12-23 09:49:13,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 09:49:13,351 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[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2020-12-23 09:49:13,588 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.3.1.ufo.BOUNDED-6.pals.c[6844,6857] [2020-12-23 09:49:13,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:49:13,603 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[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2020-12-23 09:49:13,657 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.3.1.ufo.BOUNDED-6.pals.c[6844,6857] [2020-12-23 09:49:13,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:49:13,694 INFO L208 MainTranslator]: Completed translation [2020-12-23 09:49:13,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:49:13 WrapperNode [2020-12-23 09:49:13,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 09:49:13,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 09:49:13,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 09:49:13,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 09:49:13,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:49:13" (1/1) ... [2020-12-23 09:49:13,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:49:13" (1/1) ... [2020-12-23 09:49:13,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 09:49:13,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 09:49:13,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 09:49:13,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 09:49:13,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:49:13" (1/1) ... [2020-12-23 09:49:13,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:49:13" (1/1) ... [2020-12-23 09:49:13,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:49:13" (1/1) ... [2020-12-23 09:49:13,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:49:13" (1/1) ... [2020-12-23 09:49:13,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:49:13" (1/1) ... [2020-12-23 09:49:13,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:49:13" (1/1) ... [2020-12-23 09:49:13,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:49:13" (1/1) ... [2020-12-23 09:49:13,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 09:49:13,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 09:49:13,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 09:49:13,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 09:49:13,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:49:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:49:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 09:49:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 09:49:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 09:49:13,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 09:49:14,799 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 09:49:14,799 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-23 09:49:14,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:49:14 BoogieIcfgContainer [2020-12-23 09:49:14,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 09:49:14,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 09:49:14,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 09:49:14,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 09:49:14,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:49:13" (1/3) ... [2020-12-23 09:49:14,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d629905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:49:14, skipping insertion in model container [2020-12-23 09:49:14,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:49:13" (2/3) ... [2020-12-23 09:49:14,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d629905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:49:14, skipping insertion in model container [2020-12-23 09:49:14,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:49:14" (3/3) ... [2020-12-23 09:49:14,811 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c [2020-12-23 09:49:14,819 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 09:49:14,825 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 09:49:14,844 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 09:49:14,872 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 09:49:14,872 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 09:49:14,872 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 09:49:14,872 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 09:49:14,873 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 09:49:14,873 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 09:49:14,873 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 09:49:14,873 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 09:49:14,890 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-12-23 09:49:14,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 09:49:14,898 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:49:14,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:49:14,900 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:49:14,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:49:14,907 INFO L82 PathProgramCache]: Analyzing trace with hash 233700331, now seen corresponding path program 1 times [2020-12-23 09:49:14,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:49:14,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966928647] [2020-12-23 09:49:14,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:49:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:49:15,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:49:15,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966928647] [2020-12-23 09:49:15,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:49:15,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:49:15,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446196146] [2020-12-23 09:49:15,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:49:15,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:49:15,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:49:15,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:49:15,259 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 5 states. [2020-12-23 09:49:15,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:49:15,391 INFO L93 Difference]: Finished difference Result 191 states and 307 transitions. [2020-12-23 09:49:15,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:49:15,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-12-23 09:49:15,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:49:15,407 INFO L225 Difference]: With dead ends: 191 [2020-12-23 09:49:15,407 INFO L226 Difference]: Without dead ends: 127 [2020-12-23 09:49:15,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:49:15,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-23 09:49:15,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 75. [2020-12-23 09:49:15,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-23 09:49:15,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 105 transitions. [2020-12-23 09:49:15,460 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 105 transitions. Word has length 25 [2020-12-23 09:49:15,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:49:15,461 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 105 transitions. [2020-12-23 09:49:15,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:49:15,461 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 105 transitions. [2020-12-23 09:49:15,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 09:49:15,463 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:49:15,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:49:15,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 09:49:15,464 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:49:15,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:49:15,465 INFO L82 PathProgramCache]: Analyzing trace with hash 182027041, now seen corresponding path program 1 times [2020-12-23 09:49:15,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:49:15,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031701599] [2020-12-23 09:49:15,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:49:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:49:15,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:49:15,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031701599] [2020-12-23 09:49:15,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:49:15,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:49:15,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395879709] [2020-12-23 09:49:15,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:49:15,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:49:15,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:49:15,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:49:15,639 INFO L87 Difference]: Start difference. First operand 75 states and 105 transitions. Second operand 3 states. [2020-12-23 09:49:15,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:49:15,671 INFO L93 Difference]: Finished difference Result 167 states and 249 transitions. [2020-12-23 09:49:15,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:49:15,672 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-12-23 09:49:15,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:49:15,674 INFO L225 Difference]: With dead ends: 167 [2020-12-23 09:49:15,674 INFO L226 Difference]: Without dead ends: 115 [2020-12-23 09:49:15,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:49:15,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-23 09:49:15,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2020-12-23 09:49:15,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-12-23 09:49:15,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 165 transitions. [2020-12-23 09:49:15,694 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 165 transitions. Word has length 41 [2020-12-23 09:49:15,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:49:15,695 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 165 transitions. [2020-12-23 09:49:15,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:49:15,695 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 165 transitions. [2020-12-23 09:49:15,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-23 09:49:15,697 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:49:15,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:49:15,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 09:49:15,697 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:49:15,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:49:15,698 INFO L82 PathProgramCache]: Analyzing trace with hash 54990345, now seen corresponding path program 1 times [2020-12-23 09:49:15,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:49:15,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842460873] [2020-12-23 09:49:15,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:49:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:49:15,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:49:15,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842460873] [2020-12-23 09:49:15,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:49:15,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:49:15,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831685838] [2020-12-23 09:49:15,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:49:15,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:49:15,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:49:15,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:49:15,853 INFO L87 Difference]: Start difference. First operand 113 states and 165 transitions. Second operand 3 states. [2020-12-23 09:49:15,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:49:15,915 INFO L93 Difference]: Finished difference Result 269 states and 409 transitions. [2020-12-23 09:49:15,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:49:15,920 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-12-23 09:49:15,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:49:15,922 INFO L225 Difference]: With dead ends: 269 [2020-12-23 09:49:15,922 INFO L226 Difference]: Without dead ends: 179 [2020-12-23 09:49:15,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:49:15,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-12-23 09:49:15,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2020-12-23 09:49:15,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-12-23 09:49:15,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 264 transitions. [2020-12-23 09:49:15,961 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 264 transitions. Word has length 42 [2020-12-23 09:49:15,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:49:15,961 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 264 transitions. [2020-12-23 09:49:15,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:49:15,962 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 264 transitions. [2020-12-23 09:49:15,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-23 09:49:15,963 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:49:15,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:49:15,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 09:49:15,964 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:49:15,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:49:15,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1508061361, now seen corresponding path program 1 times [2020-12-23 09:49:15,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:49:15,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471557275] [2020-12-23 09:49:15,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:49:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:49:16,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:49:16,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471557275] [2020-12-23 09:49:16,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:49:16,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:49:16,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586396360] [2020-12-23 09:49:16,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:49:16,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:49:16,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:49:16,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:49:16,050 INFO L87 Difference]: Start difference. First operand 177 states and 264 transitions. Second operand 3 states. [2020-12-23 09:49:16,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:49:16,104 INFO L93 Difference]: Finished difference Result 437 states and 666 transitions. [2020-12-23 09:49:16,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:49:16,105 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-12-23 09:49:16,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:49:16,110 INFO L225 Difference]: With dead ends: 437 [2020-12-23 09:49:16,110 INFO L226 Difference]: Without dead ends: 283 [2020-12-23 09:49:16,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:49:16,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-12-23 09:49:16,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 281. [2020-12-23 09:49:16,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-12-23 09:49:16,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 420 transitions. [2020-12-23 09:49:16,169 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 420 transitions. Word has length 43 [2020-12-23 09:49:16,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:49:16,170 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 420 transitions. [2020-12-23 09:49:16,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:49:16,170 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 420 transitions. [2020-12-23 09:49:16,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 09:49:16,177 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:49:16,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:49:16,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 09:49:16,178 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:49:16,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:49:16,178 INFO L82 PathProgramCache]: Analyzing trace with hash -922713191, now seen corresponding path program 1 times [2020-12-23 09:49:16,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:49:16,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101302073] [2020-12-23 09:49:16,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:49:16,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:49:16,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:49:16,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101302073] [2020-12-23 09:49:16,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:49:16,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:49:16,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794980209] [2020-12-23 09:49:16,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:49:16,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:49:16,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:49:16,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:49:16,371 INFO L87 Difference]: Start difference. First operand 281 states and 420 transitions. Second operand 5 states. [2020-12-23 09:49:16,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:49:16,537 INFO L93 Difference]: Finished difference Result 971 states and 1467 transitions. [2020-12-23 09:49:16,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:49:16,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-12-23 09:49:16,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:49:16,545 INFO L225 Difference]: With dead ends: 971 [2020-12-23 09:49:16,545 INFO L226 Difference]: Without dead ends: 713 [2020-12-23 09:49:16,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:49:16,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-12-23 09:49:16,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 709. [2020-12-23 09:49:16,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2020-12-23 09:49:16,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1060 transitions. [2020-12-23 09:49:16,615 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1060 transitions. Word has length 44 [2020-12-23 09:49:16,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:49:16,618 INFO L481 AbstractCegarLoop]: Abstraction has 709 states and 1060 transitions. [2020-12-23 09:49:16,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:49:16,618 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1060 transitions. [2020-12-23 09:49:16,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-23 09:49:16,625 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:49:16,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:49:16,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 09:49:16,626 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:49:16,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:49:16,627 INFO L82 PathProgramCache]: Analyzing trace with hash 2131571990, now seen corresponding path program 1 times [2020-12-23 09:49:16,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:49:16,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981413700] [2020-12-23 09:49:16,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:49:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:49:16,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:49:16,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981413700] [2020-12-23 09:49:16,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:49:16,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:49:16,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027422639] [2020-12-23 09:49:16,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:49:16,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:49:16,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:49:16,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:49:16,747 INFO L87 Difference]: Start difference. First operand 709 states and 1060 transitions. Second operand 5 states. [2020-12-23 09:49:16,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:49:16,892 INFO L93 Difference]: Finished difference Result 2801 states and 4220 transitions. [2020-12-23 09:49:16,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:49:16,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-12-23 09:49:16,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:49:16,905 INFO L225 Difference]: With dead ends: 2801 [2020-12-23 09:49:16,906 INFO L226 Difference]: Without dead ends: 2115 [2020-12-23 09:49:16,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:49:16,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2020-12-23 09:49:16,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 1393. [2020-12-23 09:49:16,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1393 states. [2020-12-23 09:49:16,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 2048 transitions. [2020-12-23 09:49:16,993 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 2048 transitions. Word has length 45 [2020-12-23 09:49:16,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:49:16,994 INFO L481 AbstractCegarLoop]: Abstraction has 1393 states and 2048 transitions. [2020-12-23 09:49:16,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:49:16,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 2048 transitions. [2020-12-23 09:49:16,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-23 09:49:16,995 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:49:16,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:49:16,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 09:49:16,996 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:49:16,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:49:16,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1270898830, now seen corresponding path program 1 times [2020-12-23 09:49:16,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:49:16,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842092794] [2020-12-23 09:49:16,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:49:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:49:17,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:49:17,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842092794] [2020-12-23 09:49:17,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:49:17,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:49:17,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981059010] [2020-12-23 09:49:17,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:49:17,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:49:17,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:49:17,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:49:17,087 INFO L87 Difference]: Start difference. First operand 1393 states and 2048 transitions. Second operand 5 states. [2020-12-23 09:49:17,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:49:17,268 INFO L93 Difference]: Finished difference Result 2955 states and 4265 transitions. [2020-12-23 09:49:17,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:49:17,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-12-23 09:49:17,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:49:17,284 INFO L225 Difference]: With dead ends: 2955 [2020-12-23 09:49:17,285 INFO L226 Difference]: Without dead ends: 2953 [2020-12-23 09:49:17,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:49:17,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2020-12-23 09:49:17,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1537. [2020-12-23 09:49:17,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1537 states. [2020-12-23 09:49:17,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1537 states to 1537 states and 2192 transitions. [2020-12-23 09:49:17,431 INFO L78 Accepts]: Start accepts. Automaton has 1537 states and 2192 transitions. Word has length 46 [2020-12-23 09:49:17,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:49:17,431 INFO L481 AbstractCegarLoop]: Abstraction has 1537 states and 2192 transitions. [2020-12-23 09:49:17,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:49:17,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1537 states and 2192 transitions. [2020-12-23 09:49:17,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-23 09:49:17,433 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:49:17,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:49:17,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 09:49:17,434 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:49:17,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:49:17,435 INFO L82 PathProgramCache]: Analyzing trace with hash 795736558, now seen corresponding path program 1 times [2020-12-23 09:49:17,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:49:17,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083727576] [2020-12-23 09:49:17,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:49:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:49:17,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:49:17,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083727576] [2020-12-23 09:49:17,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:49:17,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:49:17,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847746076] [2020-12-23 09:49:17,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:49:17,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:49:17,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:49:17,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:49:17,537 INFO L87 Difference]: Start difference. First operand 1537 states and 2192 transitions. Second operand 3 states. [2020-12-23 09:49:17,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:49:17,672 INFO L93 Difference]: Finished difference Result 3651 states and 5220 transitions. [2020-12-23 09:49:17,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:49:17,673 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-12-23 09:49:17,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:49:17,686 INFO L225 Difference]: With dead ends: 3651 [2020-12-23 09:49:17,687 INFO L226 Difference]: Without dead ends: 2137 [2020-12-23 09:49:17,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:49:17,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2020-12-23 09:49:17,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2135. [2020-12-23 09:49:17,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2135 states. [2020-12-23 09:49:17,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 3030 transitions. [2020-12-23 09:49:17,829 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 3030 transitions. Word has length 47 [2020-12-23 09:49:17,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:49:17,830 INFO L481 AbstractCegarLoop]: Abstraction has 2135 states and 3030 transitions. [2020-12-23 09:49:17,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:49:17,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 3030 transitions. [2020-12-23 09:49:17,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-23 09:49:17,834 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:49:17,835 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:49:17,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 09:49:17,835 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:49:17,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:49:17,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1282796535, now seen corresponding path program 1 times [2020-12-23 09:49:17,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:49:17,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893401856] [2020-12-23 09:49:17,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:49:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:49:18,137 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:49:18,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893401856] [2020-12-23 09:49:18,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329148110] [2020-12-23 09:49:18,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:49:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:49:18,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 09:49:18,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:49:18,540 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 09:49:18,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:49:18,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 14 [2020-12-23 09:49:18,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151451295] [2020-12-23 09:49:18,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-23 09:49:18,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:49:18,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-23 09:49:18,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-12-23 09:49:18,545 INFO L87 Difference]: Start difference. First operand 2135 states and 3030 transitions. Second operand 14 states. [2020-12-23 09:49:23,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:49:23,617 INFO L93 Difference]: Finished difference Result 16364 states and 23062 transitions. [2020-12-23 09:49:23,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-12-23 09:49:23,618 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 66 [2020-12-23 09:49:23,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:49:23,687 INFO L225 Difference]: With dead ends: 16364 [2020-12-23 09:49:23,687 INFO L226 Difference]: Without dead ends: 14354 [2020-12-23 09:49:23,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2714 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1482, Invalid=5828, Unknown=0, NotChecked=0, Total=7310 [2020-12-23 09:49:23,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14354 states. [2020-12-23 09:49:24,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14354 to 8129. [2020-12-23 09:49:24,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8129 states. [2020-12-23 09:49:24,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8129 states to 8129 states and 11436 transitions. [2020-12-23 09:49:24,321 INFO L78 Accepts]: Start accepts. Automaton has 8129 states and 11436 transitions. Word has length 66 [2020-12-23 09:49:24,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:49:24,322 INFO L481 AbstractCegarLoop]: Abstraction has 8129 states and 11436 transitions. [2020-12-23 09:49:24,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-23 09:49:24,322 INFO L276 IsEmpty]: Start isEmpty. Operand 8129 states and 11436 transitions. [2020-12-23 09:49:24,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 09:49:24,326 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:49:24,326 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:49:24,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-23 09:49:24,542 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:49:24,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:49:24,542 INFO L82 PathProgramCache]: Analyzing trace with hash 129974557, now seen corresponding path program 1 times [2020-12-23 09:49:24,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:49:24,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152992011] [2020-12-23 09:49:24,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:49:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:49:24,620 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:49:24,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152992011] [2020-12-23 09:49:24,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:49:24,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:49:24,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072542069] [2020-12-23 09:49:24,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:49:24,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:49:24,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:49:24,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:49:24,632 INFO L87 Difference]: Start difference. First operand 8129 states and 11436 transitions. Second operand 3 states. [2020-12-23 09:49:25,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:49:25,183 INFO L93 Difference]: Finished difference Result 12669 states and 17784 transitions. [2020-12-23 09:49:25,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:49:25,184 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-23 09:49:25,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:49:25,217 INFO L225 Difference]: With dead ends: 12669 [2020-12-23 09:49:25,217 INFO L226 Difference]: Without dead ends: 8439 [2020-12-23 09:49:25,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:49:25,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8439 states. [2020-12-23 09:49:25,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8439 to 8199. [2020-12-23 09:49:25,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8199 states. [2020-12-23 09:49:25,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8199 states to 8199 states and 11291 transitions. [2020-12-23 09:49:25,787 INFO L78 Accepts]: Start accepts. Automaton has 8199 states and 11291 transitions. Word has length 67 [2020-12-23 09:49:25,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:49:25,787 INFO L481 AbstractCegarLoop]: Abstraction has 8199 states and 11291 transitions. [2020-12-23 09:49:25,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:49:25,787 INFO L276 IsEmpty]: Start isEmpty. Operand 8199 states and 11291 transitions. [2020-12-23 09:49:25,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 09:49:25,791 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:49:25,791 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:49:25,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 09:49:25,792 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:49:25,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:49:25,792 INFO L82 PathProgramCache]: Analyzing trace with hash 788719803, now seen corresponding path program 1 times [2020-12-23 09:49:25,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:49:25,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507616222] [2020-12-23 09:49:25,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:49:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:49:25,841 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:49:25,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507616222] [2020-12-23 09:49:25,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:49:25,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:49:25,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110082128] [2020-12-23 09:49:25,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:49:25,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:49:25,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:49:25,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:49:25,844 INFO L87 Difference]: Start difference. First operand 8199 states and 11291 transitions. Second operand 3 states. [2020-12-23 09:49:26,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:49:26,492 INFO L93 Difference]: Finished difference Result 19858 states and 27237 transitions. [2020-12-23 09:49:26,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:49:26,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-23 09:49:26,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:49:26,530 INFO L225 Difference]: With dead ends: 19858 [2020-12-23 09:49:26,530 INFO L226 Difference]: Without dead ends: 13692 [2020-12-23 09:49:26,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:49:26,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13692 states. [2020-12-23 09:49:27,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13692 to 13652. [2020-12-23 09:49:27,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13652 states. [2020-12-23 09:49:27,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13652 states to 13652 states and 18469 transitions. [2020-12-23 09:49:27,362 INFO L78 Accepts]: Start accepts. Automaton has 13652 states and 18469 transitions. Word has length 67 [2020-12-23 09:49:27,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:49:27,362 INFO L481 AbstractCegarLoop]: Abstraction has 13652 states and 18469 transitions. [2020-12-23 09:49:27,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:49:27,362 INFO L276 IsEmpty]: Start isEmpty. Operand 13652 states and 18469 transitions. [2020-12-23 09:49:27,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 09:49:27,368 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:49:27,368 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:49:27,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 09:49:27,369 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:49:27,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:49:27,370 INFO L82 PathProgramCache]: Analyzing trace with hash -691738293, now seen corresponding path program 1 times [2020-12-23 09:49:27,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:49:27,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16086008] [2020-12-23 09:49:27,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:49:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:49:27,476 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:49:27,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16086008] [2020-12-23 09:49:27,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:49:27,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:49:27,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74495210] [2020-12-23 09:49:27,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:49:27,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:49:27,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:49:27,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:49:27,479 INFO L87 Difference]: Start difference. First operand 13652 states and 18469 transitions. Second operand 6 states. [2020-12-23 09:49:28,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:49:28,542 INFO L93 Difference]: Finished difference Result 34017 states and 45971 transitions. [2020-12-23 09:49:28,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:49:28,543 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-23 09:49:28,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:49:28,587 INFO L225 Difference]: With dead ends: 34017 [2020-12-23 09:49:28,588 INFO L226 Difference]: Without dead ends: 20418 [2020-12-23 09:49:28,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 09:49:28,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20418 states. [2020-12-23 09:49:29,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20418 to 18657. [2020-12-23 09:49:29,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18657 states. [2020-12-23 09:49:29,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18657 states to 18657 states and 24991 transitions. [2020-12-23 09:49:29,641 INFO L78 Accepts]: Start accepts. Automaton has 18657 states and 24991 transitions. Word has length 67 [2020-12-23 09:49:29,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:49:29,642 INFO L481 AbstractCegarLoop]: Abstraction has 18657 states and 24991 transitions. [2020-12-23 09:49:29,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:49:29,642 INFO L276 IsEmpty]: Start isEmpty. Operand 18657 states and 24991 transitions. [2020-12-23 09:49:29,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 09:49:29,647 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:49:29,647 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:49:29,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 09:49:29,648 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:49:29,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:49:29,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1134894771, now seen corresponding path program 1 times [2020-12-23 09:49:29,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:49:29,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209409359] [2020-12-23 09:49:29,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:49:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:49:29,774 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:49:29,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209409359] [2020-12-23 09:49:29,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:49:29,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:49:29,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464562613] [2020-12-23 09:49:29,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:49:29,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:49:29,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:49:29,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:49:29,777 INFO L87 Difference]: Start difference. First operand 18657 states and 24991 transitions. Second operand 3 states. [2020-12-23 09:49:30,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:49:30,653 INFO L93 Difference]: Finished difference Result 36798 states and 49081 transitions. [2020-12-23 09:49:30,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:49:30,654 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-23 09:49:30,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:49:30,703 INFO L225 Difference]: With dead ends: 36798 [2020-12-23 09:49:30,703 INFO L226 Difference]: Without dead ends: 20558 [2020-12-23 09:49:30,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:49:30,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20558 states. [2020-12-23 09:49:32,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20558 to 16817. [2020-12-23 09:49:32,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16817 states. [2020-12-23 09:49:32,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16817 states to 16817 states and 22125 transitions. [2020-12-23 09:49:32,256 INFO L78 Accepts]: Start accepts. Automaton has 16817 states and 22125 transitions. Word has length 67 [2020-12-23 09:49:32,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:49:32,256 INFO L481 AbstractCegarLoop]: Abstraction has 16817 states and 22125 transitions. [2020-12-23 09:49:32,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:49:32,257 INFO L276 IsEmpty]: Start isEmpty. Operand 16817 states and 22125 transitions. [2020-12-23 09:49:32,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 09:49:32,264 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:49:32,264 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:49:32,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 09:49:32,265 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:49:32,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:49:32,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1562240835, now seen corresponding path program 1 times [2020-12-23 09:49:32,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:49:32,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086544953] [2020-12-23 09:49:32,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:49:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:49:32,391 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 09:49:32,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086544953] [2020-12-23 09:49:32,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:49:32,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:49:32,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033625726] [2020-12-23 09:49:32,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:49:32,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:49:32,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:49:32,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:49:32,394 INFO L87 Difference]: Start difference. First operand 16817 states and 22125 transitions. Second operand 5 states. [2020-12-23 09:49:33,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:49:33,472 INFO L93 Difference]: Finished difference Result 31498 states and 41930 transitions. [2020-12-23 09:49:33,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:49:33,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-12-23 09:49:33,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:49:33,520 INFO L225 Difference]: With dead ends: 31498 [2020-12-23 09:49:33,520 INFO L226 Difference]: Without dead ends: 26584 [2020-12-23 09:49:33,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:49:33,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26584 states. [2020-12-23 09:49:34,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26584 to 21441. [2020-12-23 09:49:34,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21441 states. [2020-12-23 09:49:34,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21441 states to 21441 states and 28219 transitions. [2020-12-23 09:49:34,745 INFO L78 Accepts]: Start accepts. Automaton has 21441 states and 28219 transitions. Word has length 67 [2020-12-23 09:49:34,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:49:34,745 INFO L481 AbstractCegarLoop]: Abstraction has 21441 states and 28219 transitions. [2020-12-23 09:49:34,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:49:34,745 INFO L276 IsEmpty]: Start isEmpty. Operand 21441 states and 28219 transitions. [2020-12-23 09:49:34,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 09:49:34,750 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:49:34,751 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:49:34,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 09:49:34,751 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:49:34,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:49:34,752 INFO L82 PathProgramCache]: Analyzing trace with hash -2062316443, now seen corresponding path program 1 times [2020-12-23 09:49:34,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:49:34,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742639528] [2020-12-23 09:49:34,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:49:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:49:34,814 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:49:34,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742639528] [2020-12-23 09:49:34,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:49:34,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:49:34,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82980297] [2020-12-23 09:49:34,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:49:34,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:49:34,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:49:34,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:49:34,817 INFO L87 Difference]: Start difference. First operand 21441 states and 28219 transitions. Second operand 6 states. [2020-12-23 09:49:37,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:49:37,116 INFO L93 Difference]: Finished difference Result 63852 states and 83875 transitions. [2020-12-23 09:49:37,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:49:37,116 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-23 09:49:37,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:49:37,167 INFO L225 Difference]: With dead ends: 63852 [2020-12-23 09:49:37,167 INFO L226 Difference]: Without dead ends: 42440 [2020-12-23 09:49:37,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 09:49:37,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42440 states. [2020-12-23 09:49:39,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42440 to 37717. [2020-12-23 09:49:39,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37717 states. [2020-12-23 09:49:39,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37717 states to 37717 states and 49117 transitions. [2020-12-23 09:49:39,301 INFO L78 Accepts]: Start accepts. Automaton has 37717 states and 49117 transitions. Word has length 67 [2020-12-23 09:49:39,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:49:39,301 INFO L481 AbstractCegarLoop]: Abstraction has 37717 states and 49117 transitions. [2020-12-23 09:49:39,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:49:39,302 INFO L276 IsEmpty]: Start isEmpty. Operand 37717 states and 49117 transitions. [2020-12-23 09:49:39,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 09:49:39,308 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:49:39,308 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:49:39,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 09:49:39,309 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:49:39,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:49:39,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1809004131, now seen corresponding path program 1 times [2020-12-23 09:49:39,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:49:39,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814604966] [2020-12-23 09:49:39,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:49:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:49:39,397 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 09:49:39,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814604966] [2020-12-23 09:49:39,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:49:39,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:49:39,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934281660] [2020-12-23 09:49:39,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:49:39,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:49:39,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:49:39,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:49:39,399 INFO L87 Difference]: Start difference. First operand 37717 states and 49117 transitions. Second operand 5 states. [2020-12-23 09:49:41,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:49:41,956 INFO L93 Difference]: Finished difference Result 63451 states and 83682 transitions. [2020-12-23 09:49:41,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:49:41,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-12-23 09:49:41,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:49:42,012 INFO L225 Difference]: With dead ends: 63451 [2020-12-23 09:49:42,013 INFO L226 Difference]: Without dead ends: 54266 [2020-12-23 09:49:42,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:49:42,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54266 states. [2020-12-23 09:49:44,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54266 to 45348. [2020-12-23 09:49:44,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45348 states. [2020-12-23 09:49:44,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45348 states to 45348 states and 59082 transitions. [2020-12-23 09:49:44,653 INFO L78 Accepts]: Start accepts. Automaton has 45348 states and 59082 transitions. Word has length 67 [2020-12-23 09:49:44,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:49:44,654 INFO L481 AbstractCegarLoop]: Abstraction has 45348 states and 59082 transitions. [2020-12-23 09:49:44,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:49:44,654 INFO L276 IsEmpty]: Start isEmpty. Operand 45348 states and 59082 transitions. [2020-12-23 09:49:44,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 09:49:44,659 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:49:44,660 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:49:44,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 09:49:44,660 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:49:44,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:49:44,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1321378519, now seen corresponding path program 1 times [2020-12-23 09:49:44,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:49:44,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593549700] [2020-12-23 09:49:44,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:49:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:49:44,751 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 09:49:44,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593549700] [2020-12-23 09:49:44,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:49:44,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:49:44,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787729625] [2020-12-23 09:49:44,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:49:44,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:49:44,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:49:44,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:49:44,754 INFO L87 Difference]: Start difference. First operand 45348 states and 59082 transitions. Second operand 5 states. [2020-12-23 09:49:47,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:49:47,895 INFO L93 Difference]: Finished difference Result 74740 states and 98337 transitions. [2020-12-23 09:49:47,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:49:47,896 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-12-23 09:49:47,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:49:47,959 INFO L225 Difference]: With dead ends: 74740 [2020-12-23 09:49:47,960 INFO L226 Difference]: Without dead ends: 61614 [2020-12-23 09:49:47,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:49:48,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61614 states. [2020-12-23 09:49:51,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61614 to 54856. [2020-12-23 09:49:51,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54856 states. [2020-12-23 09:49:51,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54856 states to 54856 states and 71377 transitions. [2020-12-23 09:49:51,222 INFO L78 Accepts]: Start accepts. Automaton has 54856 states and 71377 transitions. Word has length 68 [2020-12-23 09:49:51,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:49:51,222 INFO L481 AbstractCegarLoop]: Abstraction has 54856 states and 71377 transitions. [2020-12-23 09:49:51,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:49:51,223 INFO L276 IsEmpty]: Start isEmpty. Operand 54856 states and 71377 transitions. [2020-12-23 09:49:51,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-23 09:49:51,228 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:49:51,228 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:49:51,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 09:49:51,228 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:49:51,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:49:51,229 INFO L82 PathProgramCache]: Analyzing trace with hash -624325544, now seen corresponding path program 1 times [2020-12-23 09:49:51,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:49:51,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937399771] [2020-12-23 09:49:51,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:49:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:49:51,314 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:49:51,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937399771] [2020-12-23 09:49:51,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818166108] [2020-12-23 09:49:51,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:49:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:49:51,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 09:49:51,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:49:51,638 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:49:51,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:49:51,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-12-23 09:49:51,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196663111] [2020-12-23 09:49:51,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 09:49:51,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:49:51,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 09:49:51,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:49:51,641 INFO L87 Difference]: Start difference. First operand 54856 states and 71377 transitions. Second operand 11 states. [2020-12-23 09:49:58,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:49:58,036 INFO L93 Difference]: Finished difference Result 143276 states and 186312 transitions. [2020-12-23 09:49:58,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 09:49:58,036 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-12-23 09:49:58,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:49:58,161 INFO L225 Difference]: With dead ends: 143276 [2020-12-23 09:49:58,162 INFO L226 Difference]: Without dead ends: 107653 [2020-12-23 09:49:58,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-12-23 09:49:58,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107653 states. [2020-12-23 09:50:02,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107653 to 61926. [2020-12-23 09:50:02,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61926 states. [2020-12-23 09:50:02,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61926 states to 61926 states and 80743 transitions. [2020-12-23 09:50:02,383 INFO L78 Accepts]: Start accepts. Automaton has 61926 states and 80743 transitions. Word has length 71 [2020-12-23 09:50:02,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:50:02,383 INFO L481 AbstractCegarLoop]: Abstraction has 61926 states and 80743 transitions. [2020-12-23 09:50:02,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 09:50:02,383 INFO L276 IsEmpty]: Start isEmpty. Operand 61926 states and 80743 transitions. [2020-12-23 09:50:02,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-23 09:50:02,389 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:50:02,389 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:50:02,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 09:50:02,603 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:50:02,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:50:02,604 INFO L82 PathProgramCache]: Analyzing trace with hash -85511602, now seen corresponding path program 1 times [2020-12-23 09:50:02,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:50:02,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763749220] [2020-12-23 09:50:02,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:50:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:02,683 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:50:02,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763749220] [2020-12-23 09:50:02,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992605979] [2020-12-23 09:50:02,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:50:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:02,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 09:50:02,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:50:02,972 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:50:02,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:50:02,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-12-23 09:50:02,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188909213] [2020-12-23 09:50:02,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 09:50:02,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:50:02,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 09:50:02,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:50:02,977 INFO L87 Difference]: Start difference. First operand 61926 states and 80743 transitions. Second operand 11 states. [2020-12-23 09:50:10,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:50:10,073 INFO L93 Difference]: Finished difference Result 150362 states and 195387 transitions. [2020-12-23 09:50:10,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 09:50:10,073 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-12-23 09:50:10,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:50:10,201 INFO L225 Difference]: With dead ends: 150362 [2020-12-23 09:50:10,202 INFO L226 Difference]: Without dead ends: 108655 [2020-12-23 09:50:10,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-12-23 09:50:10,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108655 states. [2020-12-23 09:50:14,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108655 to 68738. [2020-12-23 09:50:14,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68738 states. [2020-12-23 09:50:14,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68738 states to 68738 states and 89472 transitions. [2020-12-23 09:50:14,840 INFO L78 Accepts]: Start accepts. Automaton has 68738 states and 89472 transitions. Word has length 71 [2020-12-23 09:50:14,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:50:14,840 INFO L481 AbstractCegarLoop]: Abstraction has 68738 states and 89472 transitions. [2020-12-23 09:50:14,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 09:50:14,841 INFO L276 IsEmpty]: Start isEmpty. Operand 68738 states and 89472 transitions. [2020-12-23 09:50:14,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 09:50:14,846 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:50:14,846 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:50:15,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:50:15,057 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:50:15,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:50:15,058 INFO L82 PathProgramCache]: Analyzing trace with hash 619033760, now seen corresponding path program 1 times [2020-12-23 09:50:15,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:50:15,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397282510] [2020-12-23 09:50:15,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:50:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:15,151 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:50:15,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397282510] [2020-12-23 09:50:15,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774294194] [2020-12-23 09:50:15,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:50:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:15,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 09:50:15,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:50:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:50:15,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:50:15,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-12-23 09:50:15,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448773253] [2020-12-23 09:50:15,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 09:50:15,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:50:15,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 09:50:15,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:50:15,472 INFO L87 Difference]: Start difference. First operand 68738 states and 89472 transitions. Second operand 11 states. [2020-12-23 09:50:22,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:50:22,150 INFO L93 Difference]: Finished difference Result 141814 states and 183968 transitions. [2020-12-23 09:50:22,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 09:50:22,151 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 72 [2020-12-23 09:50:22,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:50:22,271 INFO L225 Difference]: With dead ends: 141814 [2020-12-23 09:50:22,271 INFO L226 Difference]: Without dead ends: 94841 [2020-12-23 09:50:22,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-12-23 09:50:22,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94841 states. [2020-12-23 09:50:27,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94841 to 69691. [2020-12-23 09:50:27,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69691 states. [2020-12-23 09:50:27,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69691 states to 69691 states and 90311 transitions. [2020-12-23 09:50:27,585 INFO L78 Accepts]: Start accepts. Automaton has 69691 states and 90311 transitions. Word has length 72 [2020-12-23 09:50:27,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:50:27,586 INFO L481 AbstractCegarLoop]: Abstraction has 69691 states and 90311 transitions. [2020-12-23 09:50:27,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 09:50:27,586 INFO L276 IsEmpty]: Start isEmpty. Operand 69691 states and 90311 transitions. [2020-12-23 09:50:27,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 09:50:27,593 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:50:27,593 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:50:27,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:50:27,800 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:50:27,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:50:27,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1838305115, now seen corresponding path program 1 times [2020-12-23 09:50:27,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:50:27,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727403264] [2020-12-23 09:50:27,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:50:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:28,051 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:50:28,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727403264] [2020-12-23 09:50:28,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516812831] [2020-12-23 09:50:28,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:50:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:28,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 09:50:28,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:50:28,313 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 09:50:28,593 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:50:28,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:50:28,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-23 09:50:28,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249509271] [2020-12-23 09:50:28,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-23 09:50:28,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:50:28,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-23 09:50:28,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-12-23 09:50:28,595 INFO L87 Difference]: Start difference. First operand 69691 states and 90311 transitions. Second operand 17 states. [2020-12-23 09:50:42,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:50:42,229 INFO L93 Difference]: Finished difference Result 214609 states and 276498 transitions. [2020-12-23 09:50:42,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-23 09:50:42,229 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 72 [2020-12-23 09:50:42,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:50:42,435 INFO L225 Difference]: With dead ends: 214609 [2020-12-23 09:50:42,435 INFO L226 Difference]: Without dead ends: 144932 [2020-12-23 09:50:42,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=430, Invalid=1210, Unknown=0, NotChecked=0, Total=1640 [2020-12-23 09:50:42,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144932 states. [2020-12-23 09:50:49,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144932 to 85522. [2020-12-23 09:50:49,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85522 states. [2020-12-23 09:50:49,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85522 states to 85522 states and 110647 transitions. [2020-12-23 09:50:49,764 INFO L78 Accepts]: Start accepts. Automaton has 85522 states and 110647 transitions. Word has length 72 [2020-12-23 09:50:49,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:50:49,764 INFO L481 AbstractCegarLoop]: Abstraction has 85522 states and 110647 transitions. [2020-12-23 09:50:49,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-23 09:50:49,764 INFO L276 IsEmpty]: Start isEmpty. Operand 85522 states and 110647 transitions. [2020-12-23 09:50:49,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 09:50:49,770 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:50:49,771 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:50:49,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-23 09:50:49,972 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:50:49,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:50:49,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1146280427, now seen corresponding path program 1 times [2020-12-23 09:50:49,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:50:49,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361382364] [2020-12-23 09:50:49,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:50:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:50,374 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:50:50,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361382364] [2020-12-23 09:50:50,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732597801] [2020-12-23 09:50:50,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:50:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:50:50,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 09:50:50,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:50:50,705 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 09:50:50,954 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 34 [2020-12-23 09:50:51,403 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:50:51,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:50:51,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 21 [2020-12-23 09:50:51,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234112778] [2020-12-23 09:50:51,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-23 09:50:51,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:50:51,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-23 09:50:51,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2020-12-23 09:50:51,406 INFO L87 Difference]: Start difference. First operand 85522 states and 110647 transitions. Second operand 21 states. [2020-12-23 09:50:52,317 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-12-23 09:50:52,716 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2020-12-23 09:50:53,159 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-12-23 09:50:53,371 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-23 09:50:53,775 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-12-23 09:50:53,980 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-23 09:50:54,393 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-23 09:50:54,704 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-12-23 09:50:55,276 WARN L197 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-12-23 09:50:55,545 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-12-23 09:50:55,783 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-12-23 09:50:56,249 WARN L197 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-23 09:50:57,201 WARN L197 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-12-23 09:50:57,443 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-23 09:50:58,190 WARN L197 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-23 09:50:58,606 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-12-23 09:50:59,033 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-23 09:50:59,923 WARN L197 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-12-23 09:51:00,116 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-12-23 09:51:00,592 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-12-23 09:51:01,331 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-12-23 09:51:01,678 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-23 09:51:01,870 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-23 09:51:02,695 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-12-23 09:51:03,013 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-23 09:51:03,258 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-23 09:51:03,824 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-12-23 09:51:04,109 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-12-23 09:51:04,794 WARN L197 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-12-23 09:51:05,259 WARN L197 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-12-23 09:51:05,580 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-12-23 09:51:05,812 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-12-23 09:51:06,063 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-12-23 09:51:06,334 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-12-23 09:51:06,598 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-12-23 09:51:06,884 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-12-23 09:51:08,414 WARN L197 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-23 09:51:08,931 WARN L197 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-12-23 09:51:09,449 WARN L197 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-23 09:51:10,226 WARN L197 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2020-12-23 09:51:10,790 WARN L197 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-12-23 09:51:11,343 WARN L197 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2020-12-23 09:51:11,948 WARN L197 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-12-23 09:51:12,322 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-12-23 09:51:12,745 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-12-23 09:51:13,499 WARN L197 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2020-12-23 09:51:14,084 WARN L197 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2020-12-23 09:51:14,495 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-12-23 09:51:14,720 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-12-23 09:51:14,936 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-12-23 09:51:15,273 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2020-12-23 09:51:15,776 WARN L197 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-12-23 09:51:16,847 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-12-23 09:51:17,130 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-12-23 09:51:17,429 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-12-23 09:51:17,702 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-12-23 09:51:18,094 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-12-23 09:51:18,552 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-12-23 09:51:18,761 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-12-23 09:51:19,343 WARN L197 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-12-23 09:51:19,902 WARN L197 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-12-23 09:51:20,656 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-12-23 09:51:20,924 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-12-23 09:51:21,865 WARN L197 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-12-23 09:51:22,075 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2020-12-23 09:51:22,609 WARN L197 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2020-12-23 09:51:23,035 WARN L197 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-12-23 09:51:23,338 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-12-23 09:51:24,015 WARN L197 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2020-12-23 09:51:24,790 WARN L197 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-23 09:51:25,411 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-12-23 09:51:25,811 WARN L197 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-12-23 09:51:26,335 WARN L197 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-12-23 09:51:26,803 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-12-23 09:51:27,016 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-12-23 09:51:27,333 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-12-23 09:51:27,708 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-12-23 09:51:27,990 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2020-12-23 09:51:28,888 WARN L197 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-12-23 09:51:29,456 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-12-23 09:51:30,162 WARN L197 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-12-23 09:51:30,438 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-12-23 09:51:31,394 WARN L197 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-23 09:51:31,820 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-12-23 09:51:32,919 WARN L197 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-12-23 09:51:33,649 WARN L197 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-23 09:51:33,883 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-23 09:51:35,160 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-12-23 09:51:35,715 WARN L197 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-12-23 09:51:37,132 WARN L197 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-12-23 09:51:37,681 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-12-23 09:51:38,292 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-23 09:51:38,668 WARN L197 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-12-23 09:51:39,063 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-12-23 09:51:39,315 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-12-23 09:51:40,869 WARN L197 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2020-12-23 09:51:41,487 WARN L197 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-23 09:51:41,888 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-12-23 09:51:42,366 WARN L197 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-12-23 09:51:42,916 WARN L197 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-12-23 09:51:44,509 WARN L197 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-12-23 09:51:44,999 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-12-23 09:51:45,772 WARN L197 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-12-23 09:51:46,147 WARN L197 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-12-23 09:51:46,752 WARN L197 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-12-23 09:51:47,233 WARN L197 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-12-23 09:51:47,886 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-12-23 09:51:48,360 WARN L197 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-12-23 09:51:48,760 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-12-23 09:51:50,436 WARN L197 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-12-23 09:51:51,860 WARN L197 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-12-23 09:51:53,178 WARN L197 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2020-12-23 09:51:53,964 WARN L197 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-23 09:51:54,665 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-12-23 09:51:54,900 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2020-12-23 09:51:55,667 WARN L197 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-12-23 09:51:56,023 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-12-23 09:51:57,166 WARN L197 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-12-23 09:51:58,636 WARN L197 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-12-23 09:51:59,362 WARN L197 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-23 09:52:01,233 WARN L197 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-23 09:52:01,505 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 29 [2020-12-23 09:52:02,074 WARN L197 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-12-23 09:52:02,694 WARN L197 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-12-23 09:52:02,921 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2020-12-23 09:52:03,228 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2020-12-23 09:52:03,848 WARN L197 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-12-23 09:52:04,271 WARN L197 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-12-23 09:52:04,756 WARN L197 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-23 09:52:04,981 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2020-12-23 09:52:05,599 WARN L197 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-12-23 09:52:06,062 WARN L197 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-12-23 09:52:06,602 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-12-23 09:52:06,923 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2020-12-23 09:52:07,347 WARN L197 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-23 09:52:07,950 WARN L197 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-12-23 09:52:08,712 WARN L197 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-23 09:52:10,082 WARN L197 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-23 09:52:10,575 WARN L197 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-23 09:52:11,025 WARN L197 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-23 09:52:11,621 WARN L197 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-12-23 09:52:12,740 WARN L197 SmtUtils]: Spent 975.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-12-23 09:52:13,926 WARN L197 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-12-23 09:52:14,580 WARN L197 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-12-23 09:52:15,815 WARN L197 SmtUtils]: Spent 912.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-23 09:52:16,993 WARN L197 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-12-23 09:52:19,291 WARN L197 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-12-23 09:52:20,923 WARN L197 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-23 09:52:21,163 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2020-12-23 09:52:22,017 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-12-23 09:52:22,681 WARN L197 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-12-23 09:52:24,285 WARN L197 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-23 09:52:24,505 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-12-23 09:52:25,089 WARN L197 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-12-23 09:52:25,521 WARN L197 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-12-23 09:52:27,223 WARN L197 SmtUtils]: Spent 905.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2020-12-23 09:52:28,194 WARN L197 SmtUtils]: Spent 840.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-12-23 09:52:29,220 WARN L197 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2020-12-23 09:52:30,775 WARN L197 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-12-23 09:52:31,330 WARN L197 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-12-23 09:52:33,476 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-12-23 09:52:35,336 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2020-12-23 09:52:36,059 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2020-12-23 09:52:38,590 WARN L197 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-12-23 09:52:38,893 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-12-23 09:52:39,706 WARN L197 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-23 09:52:41,460 WARN L197 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-12-23 09:52:43,176 WARN L197 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-12-23 09:52:44,640 WARN L197 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-23 09:52:45,526 WARN L197 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-23 09:52:46,996 WARN L197 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-23 09:52:47,787 WARN L197 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-23 09:52:52,097 WARN L197 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-23 09:52:54,003 WARN L197 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-12-23 09:53:06,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:53:06,518 INFO L93 Difference]: Finished difference Result 441820 states and 569586 transitions. [2020-12-23 09:53:06,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 286 states. [2020-12-23 09:53:06,522 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-12-23 09:53:06,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:53:07,360 INFO L225 Difference]: With dead ends: 441820 [2020-12-23 09:53:07,361 INFO L226 Difference]: Without dead ends: 373440 [2020-12-23 09:53:07,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42225 ImplicationChecksByTransitivity, 83.7s TimeCoverageRelationStatistics Valid=9604, Invalid=82508, Unknown=0, NotChecked=0, Total=92112 [2020-12-23 09:53:07,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373440 states.