/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.6_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 09:58:58,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 09:58:58,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 09:58:58,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 09:58:58,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 09:58:58,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 09:58:58,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 09:58:58,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 09:58:58,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 09:58:58,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 09:58:58,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 09:58:58,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 09:58:58,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 09:58:58,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 09:58:58,736 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 09:58:58,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 09:58:58,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 09:58:58,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 09:58:58,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 09:58:58,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 09:58:58,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 09:58:58,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 09:58:58,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 09:58:58,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 09:58:58,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 09:58:58,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 09:58:58,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 09:58:58,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 09:58:58,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 09:58:58,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 09:58:58,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 09:58:58,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 09:58:58,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 09:58:58,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 09:58:58,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 09:58:58,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 09:58:58,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 09:58:58,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 09:58:58,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 09:58:58,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 09:58:58,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 09:58:58,764 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 09:58:58,789 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 09:58:58,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 09:58:58,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 09:58:58,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 09:58:58,791 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 09:58:58,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 09:58:58,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 09:58:58,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 09:58:58,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 09:58:58,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 09:58:58,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 09:58:58,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 09:58:58,793 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 09:58:58,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 09:58:58,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 09:58:58,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 09:58:58,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 09:58:58,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:58:58,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 09:58:58,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 09:58:58,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 09:58:58,795 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 09:58:58,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 09:58:58,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 09:58:58,795 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 09:58:58,796 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 09:58:59,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 09:58:59,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 09:58:59,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 09:58:59,223 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 09:58:59,224 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 09:58:59,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.6_overflow.ufo.UNBOUNDED.pals.c [2020-12-23 09:58:59,310 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a6d4d3aa3/200b4bb02ec14f2e8d7744dd8551d76a/FLAGe0922842b [2020-12-23 09:59:00,031 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 09:59:00,035 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.6_overflow.ufo.UNBOUNDED.pals.c [2020-12-23 09:59:00,051 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a6d4d3aa3/200b4bb02ec14f2e8d7744dd8551d76a/FLAGe0922842b [2020-12-23 09:59:00,291 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a6d4d3aa3/200b4bb02ec14f2e8d7744dd8551d76a [2020-12-23 09:59:00,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 09:59:00,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 09:59:00,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 09:59:00,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 09:59:00,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 09:59:00,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:59:00" (1/1) ... [2020-12-23 09:59:00,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@659edcbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:59:00, skipping insertion in model container [2020-12-23 09:59:00,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:59:00" (1/1) ... [2020-12-23 09:59:00,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 09:59:00,366 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,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[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m5~0,] left hand side expression in assignment: lhs: VariableLHS[~m5~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m6~0,] left hand side expression in assignment: lhs: VariableLHS[~m6~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~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[~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[~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[~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[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2020-12-23 09:59:00,623 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.6_overflow.ufo.UNBOUNDED.pals.c[15177,15190] [2020-12-23 09:59:00,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:59:00,643 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,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[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m5~0,] left hand side expression in assignment: lhs: VariableLHS[~m5~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m6~0,] left hand side expression in assignment: lhs: VariableLHS[~m6~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~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[~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[~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[~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[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2020-12-23 09:59:00,720 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.6_overflow.ufo.UNBOUNDED.pals.c[15177,15190] [2020-12-23 09:59:00,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:59:00,752 INFO L208 MainTranslator]: Completed translation [2020-12-23 09:59:00,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:59:00 WrapperNode [2020-12-23 09:59:00,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 09:59:00,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 09:59:00,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 09:59:00,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 09:59:00,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:59:00" (1/1) ... [2020-12-23 09:59:00,774 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:59:00" (1/1) ... [2020-12-23 09:59:00,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 09:59:00,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 09:59:00,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 09:59:00,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 09:59:00,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:59:00" (1/1) ... [2020-12-23 09:59:00,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:59:00" (1/1) ... [2020-12-23 09:59:00,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:59:00" (1/1) ... [2020-12-23 09:59:00,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:59:00" (1/1) ... [2020-12-23 09:59:00,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:59:00" (1/1) ... [2020-12-23 09:59:00,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:59:00" (1/1) ... [2020-12-23 09:59:00,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:59:00" (1/1) ... [2020-12-23 09:59:00,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 09:59:00,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 09:59:00,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 09:59:00,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 09:59:00,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:59:00" (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 09:59:01,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 09:59:01,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 09:59:01,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 09:59:01,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 09:59:01,797 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 09:59:01,797 INFO L299 CfgBuilder]: Removed 25 assume(true) statements. [2020-12-23 09:59:01,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:59:01 BoogieIcfgContainer [2020-12-23 09:59:01,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 09:59:01,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 09:59:01,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 09:59:01,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 09:59:01,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:59:00" (1/3) ... [2020-12-23 09:59:01,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739dae54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:59:01, skipping insertion in model container [2020-12-23 09:59:01,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:59:00" (2/3) ... [2020-12-23 09:59:01,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739dae54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:59:01, skipping insertion in model container [2020-12-23 09:59:01,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:59:01" (3/3) ... [2020-12-23 09:59:01,811 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6_overflow.ufo.UNBOUNDED.pals.c [2020-12-23 09:59:01,819 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 09:59:01,824 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 09:59:01,844 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 09:59:01,871 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 09:59:01,871 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 09:59:01,871 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 09:59:01,871 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 09:59:01,871 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 09:59:01,871 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 09:59:01,872 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 09:59:01,872 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 09:59:01,888 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states. [2020-12-23 09:59:01,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 09:59:01,897 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:59:01,898 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] [2020-12-23 09:59:01,898 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:59:01,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:59:01,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1259035486, now seen corresponding path program 1 times [2020-12-23 09:59:01,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:59:01,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988445091] [2020-12-23 09:59:01,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:59:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:59:02,222 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 09:59:02,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988445091] [2020-12-23 09:59:02,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:59:02,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:59:02,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732171169] [2020-12-23 09:59:02,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 09:59:02,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:59:02,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 09:59:02,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 09:59:02,265 INFO L87 Difference]: Start difference. First operand 109 states. Second operand 2 states. [2020-12-23 09:59:02,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:59:02,324 INFO L93 Difference]: Finished difference Result 169 states and 285 transitions. [2020-12-23 09:59:02,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 09:59:02,326 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2020-12-23 09:59:02,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:59:02,360 INFO L225 Difference]: With dead ends: 169 [2020-12-23 09:59:02,361 INFO L226 Difference]: Without dead ends: 105 [2020-12-23 09:59:02,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 09:59:02,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-12-23 09:59:02,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-12-23 09:59:02,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-12-23 09:59:02,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 180 transitions. [2020-12-23 09:59:02,433 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 180 transitions. Word has length 37 [2020-12-23 09:59:02,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:59:02,434 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 180 transitions. [2020-12-23 09:59:02,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 09:59:02,434 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 180 transitions. [2020-12-23 09:59:02,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 09:59:02,437 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:59:02,437 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] [2020-12-23 09:59:02,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 09:59:02,437 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:59:02,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:59:02,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1533795100, now seen corresponding path program 1 times [2020-12-23 09:59:02,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:59:02,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228133043] [2020-12-23 09:59:02,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:59:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:59:02,569 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 09:59:02,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228133043] [2020-12-23 09:59:02,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:59:02,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:59:02,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342609689] [2020-12-23 09:59:02,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:59:02,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:59:02,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:59:02,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:59:02,577 INFO L87 Difference]: Start difference. First operand 105 states and 180 transitions. Second operand 5 states. [2020-12-23 09:59:02,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:59:02,751 INFO L93 Difference]: Finished difference Result 168 states and 278 transitions. [2020-12-23 09:59:02,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:59:02,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-12-23 09:59:02,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:59:02,754 INFO L225 Difference]: With dead ends: 168 [2020-12-23 09:59:02,754 INFO L226 Difference]: Without dead ends: 105 [2020-12-23 09:59:02,755 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 09:59:02,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-12-23 09:59:02,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-12-23 09:59:02,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-12-23 09:59:02,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 140 transitions. [2020-12-23 09:59:02,766 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 140 transitions. Word has length 37 [2020-12-23 09:59:02,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:59:02,767 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 140 transitions. [2020-12-23 09:59:02,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:59:02,767 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 140 transitions. [2020-12-23 09:59:02,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 09:59:02,770 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:59:02,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:59:02,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 09:59:02,771 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:59:02,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:59:02,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1950823117, now seen corresponding path program 1 times [2020-12-23 09:59:02,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:59:02,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820338256] [2020-12-23 09:59:02,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:59:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:59:02,953 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 09:59:02,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820338256] [2020-12-23 09:59:02,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:59:02,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:59:02,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253766120] [2020-12-23 09:59:02,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:59:02,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:59:02,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:59:02,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:59:02,957 INFO L87 Difference]: Start difference. First operand 105 states and 140 transitions. Second operand 3 states. [2020-12-23 09:59:02,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:59:02,984 INFO L93 Difference]: Finished difference Result 217 states and 318 transitions. [2020-12-23 09:59:02,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:59:02,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-23 09:59:02,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:59:02,988 INFO L225 Difference]: With dead ends: 217 [2020-12-23 09:59:02,988 INFO L226 Difference]: Without dead ends: 158 [2020-12-23 09:59:02,989 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 09:59:02,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-12-23 09:59:03,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 156. [2020-12-23 09:59:03,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-12-23 09:59:03,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 222 transitions. [2020-12-23 09:59:03,006 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 222 transitions. Word has length 76 [2020-12-23 09:59:03,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:59:03,006 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 222 transitions. [2020-12-23 09:59:03,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:59:03,007 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 222 transitions. [2020-12-23 09:59:03,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 09:59:03,010 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:59:03,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:59:03,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 09:59:03,010 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:59:03,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:59:03,011 INFO L82 PathProgramCache]: Analyzing trace with hash 699917825, now seen corresponding path program 1 times [2020-12-23 09:59:03,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:59:03,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756170922] [2020-12-23 09:59:03,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:59:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:59:03,160 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 09:59:03,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756170922] [2020-12-23 09:59:03,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:59:03,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:59:03,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844526067] [2020-12-23 09:59:03,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:59:03,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:59:03,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:59:03,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:59:03,166 INFO L87 Difference]: Start difference. First operand 156 states and 222 transitions. Second operand 3 states. [2020-12-23 09:59:03,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:59:03,219 INFO L93 Difference]: Finished difference Result 364 states and 554 transitions. [2020-12-23 09:59:03,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:59:03,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-23 09:59:03,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:59:03,230 INFO L225 Difference]: With dead ends: 364 [2020-12-23 09:59:03,230 INFO L226 Difference]: Without dead ends: 254 [2020-12-23 09:59:03,235 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 09:59:03,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-12-23 09:59:03,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 252. [2020-12-23 09:59:03,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-12-23 09:59:03,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 375 transitions. [2020-12-23 09:59:03,288 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 375 transitions. Word has length 76 [2020-12-23 09:59:03,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:59:03,289 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 375 transitions. [2020-12-23 09:59:03,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:59:03,289 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 375 transitions. [2020-12-23 09:59:03,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 09:59:03,291 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:59:03,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:59:03,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 09:59:03,294 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:59:03,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:59:03,295 INFO L82 PathProgramCache]: Analyzing trace with hash -45664905, now seen corresponding path program 1 times [2020-12-23 09:59:03,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:59:03,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514175815] [2020-12-23 09:59:03,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:59:03,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:59:03,497 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 09:59:03,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514175815] [2020-12-23 09:59:03,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:59:03,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:59:03,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994670904] [2020-12-23 09:59:03,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:59:03,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:59:03,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:59:03,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:59:03,502 INFO L87 Difference]: Start difference. First operand 252 states and 375 transitions. Second operand 3 states. [2020-12-23 09:59:03,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:59:03,540 INFO L93 Difference]: Finished difference Result 640 states and 993 transitions. [2020-12-23 09:59:03,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:59:03,541 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-23 09:59:03,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:59:03,544 INFO L225 Difference]: With dead ends: 640 [2020-12-23 09:59:03,544 INFO L226 Difference]: Without dead ends: 434 [2020-12-23 09:59:03,545 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 09:59:03,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-12-23 09:59:03,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 432. [2020-12-23 09:59:03,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2020-12-23 09:59:03,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 659 transitions. [2020-12-23 09:59:03,568 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 659 transitions. Word has length 76 [2020-12-23 09:59:03,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:59:03,569 INFO L481 AbstractCegarLoop]: Abstraction has 432 states and 659 transitions. [2020-12-23 09:59:03,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:59:03,569 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 659 transitions. [2020-12-23 09:59:03,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 09:59:03,571 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:59:03,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:59:03,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 09:59:03,572 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:59:03,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:59:03,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1985695763, now seen corresponding path program 1 times [2020-12-23 09:59:03,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:59:03,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874790250] [2020-12-23 09:59:03,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:59:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:59:03,658 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 09:59:03,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874790250] [2020-12-23 09:59:03,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:59:03,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:59:03,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025414005] [2020-12-23 09:59:03,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:59:03,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:59:03,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:59:03,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:59:03,661 INFO L87 Difference]: Start difference. First operand 432 states and 659 transitions. Second operand 3 states. [2020-12-23 09:59:03,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:59:03,705 INFO L93 Difference]: Finished difference Result 1156 states and 1805 transitions. [2020-12-23 09:59:03,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:59:03,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-23 09:59:03,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:59:03,710 INFO L225 Difference]: With dead ends: 1156 [2020-12-23 09:59:03,711 INFO L226 Difference]: Without dead ends: 770 [2020-12-23 09:59:03,712 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 09:59:03,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2020-12-23 09:59:03,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 768. [2020-12-23 09:59:03,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 768 states. [2020-12-23 09:59:03,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1183 transitions. [2020-12-23 09:59:03,763 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1183 transitions. Word has length 76 [2020-12-23 09:59:03,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:59:03,765 INFO L481 AbstractCegarLoop]: Abstraction has 768 states and 1183 transitions. [2020-12-23 09:59:03,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:59:03,765 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1183 transitions. [2020-12-23 09:59:03,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 09:59:03,771 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:59:03,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:59:03,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 09:59:03,772 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:59:03,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:59:03,774 INFO L82 PathProgramCache]: Analyzing trace with hash 714986851, now seen corresponding path program 1 times [2020-12-23 09:59:03,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:59:03,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103458001] [2020-12-23 09:59:03,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:59:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:59:03,973 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 09:59:03,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103458001] [2020-12-23 09:59:03,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:59:03,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:59:03,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048386954] [2020-12-23 09:59:03,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:59:03,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:59:03,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:59:03,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:59:03,978 INFO L87 Difference]: Start difference. First operand 768 states and 1183 transitions. Second operand 7 states. [2020-12-23 09:59:04,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:59:04,240 INFO L93 Difference]: Finished difference Result 2212 states and 3457 transitions. [2020-12-23 09:59:04,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:59:04,240 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 76 [2020-12-23 09:59:04,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:59:04,250 INFO L225 Difference]: With dead ends: 2212 [2020-12-23 09:59:04,250 INFO L226 Difference]: Without dead ends: 1490 [2020-12-23 09:59:04,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-12-23 09:59:04,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2020-12-23 09:59:04,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1488. [2020-12-23 09:59:04,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2020-12-23 09:59:04,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2311 transitions. [2020-12-23 09:59:04,324 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2311 transitions. Word has length 76 [2020-12-23 09:59:04,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:59:04,324 INFO L481 AbstractCegarLoop]: Abstraction has 1488 states and 2311 transitions. [2020-12-23 09:59:04,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:59:04,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2311 transitions. [2020-12-23 09:59:04,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 09:59:04,325 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:59:04,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:59:04,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 09:59:04,326 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:59:04,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:59:04,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1224459941, now seen corresponding path program 1 times [2020-12-23 09:59:04,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:59:04,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427148964] [2020-12-23 09:59:04,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:59:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:59:04,524 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 09:59:04,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427148964] [2020-12-23 09:59:04,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:59:04,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 09:59:04,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116309420] [2020-12-23 09:59:04,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 09:59:04,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:59:04,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 09:59:04,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:59:04,528 INFO L87 Difference]: Start difference. First operand 1488 states and 2311 transitions. Second operand 8 states. [2020-12-23 09:59:05,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:59:05,939 INFO L93 Difference]: Finished difference Result 18792 states and 29491 transitions. [2020-12-23 09:59:05,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 09:59:05,939 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 76 [2020-12-23 09:59:05,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:59:06,036 INFO L225 Difference]: With dead ends: 18792 [2020-12-23 09:59:06,036 INFO L226 Difference]: Without dead ends: 17350 [2020-12-23 09:59:06,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2020-12-23 09:59:06,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17350 states. [2020-12-23 09:59:06,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17350 to 2928. [2020-12-23 09:59:06,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2020-12-23 09:59:06,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 4511 transitions. [2020-12-23 09:59:06,436 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 4511 transitions. Word has length 76 [2020-12-23 09:59:06,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:59:06,436 INFO L481 AbstractCegarLoop]: Abstraction has 2928 states and 4511 transitions. [2020-12-23 09:59:06,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 09:59:06,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 4511 transitions. [2020-12-23 09:59:06,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 09:59:06,437 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:59:06,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:59:06,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 09:59:06,438 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:59:06,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:59:06,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1530728779, now seen corresponding path program 1 times [2020-12-23 09:59:06,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:59:06,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333817976] [2020-12-23 09:59:06,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:59:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:59:06,517 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 09:59:06,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333817976] [2020-12-23 09:59:06,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:59:06,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:59:06,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387938534] [2020-12-23 09:59:06,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:59:06,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:59:06,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:59:06,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:59:06,520 INFO L87 Difference]: Start difference. First operand 2928 states and 4511 transitions. Second operand 3 states. [2020-12-23 09:59:06,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:59:06,816 INFO L93 Difference]: Finished difference Result 6494 states and 10019 transitions. [2020-12-23 09:59:06,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:59:06,817 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-23 09:59:06,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:59:06,851 INFO L225 Difference]: With dead ends: 6494 [2020-12-23 09:59:06,852 INFO L226 Difference]: Without dead ends: 3612 [2020-12-23 09:59:06,864 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 09:59:06,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3612 states. [2020-12-23 09:59:07,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3612 to 3610. [2020-12-23 09:59:07,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3610 states. [2020-12-23 09:59:07,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 5529 transitions. [2020-12-23 09:59:07,113 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 5529 transitions. Word has length 78 [2020-12-23 09:59:07,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:59:07,113 INFO L481 AbstractCegarLoop]: Abstraction has 3610 states and 5529 transitions. [2020-12-23 09:59:07,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:59:07,113 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 5529 transitions. [2020-12-23 09:59:07,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 09:59:07,114 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:59:07,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:59:07,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 09:59:07,116 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:59:07,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:59:07,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1464235267, now seen corresponding path program 1 times [2020-12-23 09:59:07,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:59:07,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495361123] [2020-12-23 09:59:07,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:59:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:59:07,511 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 09:59:07,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495361123] [2020-12-23 09:59:07,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:59:07,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 09:59:07,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960170726] [2020-12-23 09:59:07,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 09:59:07,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:59:07,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 09:59:07,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:59:07,513 INFO L87 Difference]: Start difference. First operand 3610 states and 5529 transitions. Second operand 8 states. [2020-12-23 09:59:08,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:59:08,313 INFO L93 Difference]: Finished difference Result 8952 states and 13784 transitions. [2020-12-23 09:59:08,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 09:59:08,314 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-12-23 09:59:08,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:59:08,327 INFO L225 Difference]: With dead ends: 8952 [2020-12-23 09:59:08,328 INFO L226 Difference]: Without dead ends: 5390 [2020-12-23 09:59:08,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-12-23 09:59:08,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5390 states. [2020-12-23 09:59:08,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5390 to 3610. [2020-12-23 09:59:08,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3610 states. [2020-12-23 09:59:08,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 5489 transitions. [2020-12-23 09:59:08,686 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 5489 transitions. Word has length 78 [2020-12-23 09:59:08,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:59:08,687 INFO L481 AbstractCegarLoop]: Abstraction has 3610 states and 5489 transitions. [2020-12-23 09:59:08,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 09:59:08,687 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 5489 transitions. [2020-12-23 09:59:08,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 09:59:08,688 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:59:08,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:59:08,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 09:59:08,689 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:59:08,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:59:08,689 INFO L82 PathProgramCache]: Analyzing trace with hash 324678809, now seen corresponding path program 1 times [2020-12-23 09:59:08,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:59:08,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417363022] [2020-12-23 09:59:08,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:59:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:59:08,809 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 09:59:08,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417363022] [2020-12-23 09:59:08,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:59:08,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:59:08,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837987946] [2020-12-23 09:59:08,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:59:08,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:59:08,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:59:08,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:59:08,820 INFO L87 Difference]: Start difference. First operand 3610 states and 5489 transitions. Second operand 3 states. [2020-12-23 09:59:09,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:59:09,408 INFO L93 Difference]: Finished difference Result 10254 states and 15571 transitions. [2020-12-23 09:59:09,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:59:09,409 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-23 09:59:09,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:59:09,426 INFO L225 Difference]: With dead ends: 10254 [2020-12-23 09:59:09,426 INFO L226 Difference]: Without dead ends: 6692 [2020-12-23 09:59:09,433 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 09:59:09,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6692 states. [2020-12-23 09:59:09,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6692 to 6690. [2020-12-23 09:59:09,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6690 states. [2020-12-23 09:59:10,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6690 states to 6690 states and 10049 transitions. [2020-12-23 09:59:10,010 INFO L78 Accepts]: Start accepts. Automaton has 6690 states and 10049 transitions. Word has length 78 [2020-12-23 09:59:10,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:59:10,010 INFO L481 AbstractCegarLoop]: Abstraction has 6690 states and 10049 transitions. [2020-12-23 09:59:10,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:59:10,011 INFO L276 IsEmpty]: Start isEmpty. Operand 6690 states and 10049 transitions. [2020-12-23 09:59:10,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 09:59:10,012 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:59:10,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:59:10,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 09:59:10,012 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:59:10,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:59:10,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1572186425, now seen corresponding path program 1 times [2020-12-23 09:59:10,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:59:10,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138242426] [2020-12-23 09:59:10,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:59:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:59:10,078 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 09:59:10,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138242426] [2020-12-23 09:59:10,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:59:10,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:59:10,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268074804] [2020-12-23 09:59:10,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:59:10,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:59:10,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:59:10,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:59:10,081 INFO L87 Difference]: Start difference. First operand 6690 states and 10049 transitions. Second operand 3 states. [2020-12-23 09:59:10,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:59:10,895 INFO L93 Difference]: Finished difference Result 19014 states and 28451 transitions. [2020-12-23 09:59:10,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:59:10,895 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-23 09:59:10,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:59:10,938 INFO L225 Difference]: With dead ends: 19014 [2020-12-23 09:59:10,938 INFO L226 Difference]: Without dead ends: 12372 [2020-12-23 09:59:10,951 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 09:59:10,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12372 states. [2020-12-23 09:59:12,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12372 to 12370. [2020-12-23 09:59:12,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12370 states. [2020-12-23 09:59:12,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12370 states to 12370 states and 18289 transitions. [2020-12-23 09:59:12,129 INFO L78 Accepts]: Start accepts. Automaton has 12370 states and 18289 transitions. Word has length 78 [2020-12-23 09:59:12,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:59:12,129 INFO L481 AbstractCegarLoop]: Abstraction has 12370 states and 18289 transitions. [2020-12-23 09:59:12,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:59:12,129 INFO L276 IsEmpty]: Start isEmpty. Operand 12370 states and 18289 transitions. [2020-12-23 09:59:12,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 09:59:12,133 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:59:12,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:59:12,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 09:59:12,134 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:59:12,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:59:12,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1438624019, now seen corresponding path program 1 times [2020-12-23 09:59:12,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:59:12,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700783124] [2020-12-23 09:59:12,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:59:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:59:12,274 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 09:59:12,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700783124] [2020-12-23 09:59:12,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:59:12,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 09:59:12,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117473648] [2020-12-23 09:59:12,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 09:59:12,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:59:12,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 09:59:12,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:59:12,278 INFO L87 Difference]: Start difference. First operand 12370 states and 18289 transitions. Second operand 8 states. [2020-12-23 09:59:14,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:59:14,145 INFO L93 Difference]: Finished difference Result 24209 states and 35367 transitions. [2020-12-23 09:59:14,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 09:59:14,146 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-12-23 09:59:14,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:59:14,198 INFO L225 Difference]: With dead ends: 24209 [2020-12-23 09:59:14,198 INFO L226 Difference]: Without dead ends: 24207 [2020-12-23 09:59:14,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-23 09:59:14,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24207 states. [2020-12-23 09:59:15,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24207 to 13138. [2020-12-23 09:59:15,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13138 states. [2020-12-23 09:59:15,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13138 states to 13138 states and 19025 transitions. [2020-12-23 09:59:15,444 INFO L78 Accepts]: Start accepts. Automaton has 13138 states and 19025 transitions. Word has length 79 [2020-12-23 09:59:15,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:59:15,445 INFO L481 AbstractCegarLoop]: Abstraction has 13138 states and 19025 transitions. [2020-12-23 09:59:15,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 09:59:15,445 INFO L276 IsEmpty]: Start isEmpty. Operand 13138 states and 19025 transitions. [2020-12-23 09:59:15,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-23 09:59:15,454 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:59:15,455 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:59:15,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 09:59:15,455 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:59:15,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:59:15,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1738800096, now seen corresponding path program 1 times [2020-12-23 09:59:15,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:59:15,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283612175] [2020-12-23 09:59:15,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:59:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:59:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-23 09:59:15,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283612175] [2020-12-23 09:59:15,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:59:15,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 09:59:15,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148061851] [2020-12-23 09:59:15,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 09:59:15,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:59:15,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 09:59:15,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:59:15,647 INFO L87 Difference]: Start difference. First operand 13138 states and 19025 transitions. Second operand 8 states. [2020-12-23 09:59:21,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:59:21,526 INFO L93 Difference]: Finished difference Result 95904 states and 138856 transitions. [2020-12-23 09:59:21,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 09:59:21,527 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 110 [2020-12-23 09:59:21,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:59:21,706 INFO L225 Difference]: With dead ends: 95904 [2020-12-23 09:59:21,706 INFO L226 Difference]: Without dead ends: 82814 [2020-12-23 09:59:21,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-23 09:59:21,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82814 states. [2020-12-23 09:59:24,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82814 to 26226. [2020-12-23 09:59:24,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26226 states. [2020-12-23 09:59:24,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26226 states to 26226 states and 37841 transitions. [2020-12-23 09:59:24,307 INFO L78 Accepts]: Start accepts. Automaton has 26226 states and 37841 transitions. Word has length 110 [2020-12-23 09:59:24,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:59:24,308 INFO L481 AbstractCegarLoop]: Abstraction has 26226 states and 37841 transitions. [2020-12-23 09:59:24,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 09:59:24,308 INFO L276 IsEmpty]: Start isEmpty. Operand 26226 states and 37841 transitions. [2020-12-23 09:59:24,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-23 09:59:24,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:59:24,319 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:59:24,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 09:59:24,320 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:59:24,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:59:24,320 INFO L82 PathProgramCache]: Analyzing trace with hash -491292480, now seen corresponding path program 1 times [2020-12-23 09:59:24,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:59:24,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243622377] [2020-12-23 09:59:24,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:59:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:59:24,468 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-23 09:59:24,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243622377] [2020-12-23 09:59:24,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:59:24,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 09:59:24,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104374213] [2020-12-23 09:59:24,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 09:59:24,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:59:24,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 09:59:24,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:59:24,471 INFO L87 Difference]: Start difference. First operand 26226 states and 37841 transitions. Second operand 8 states. [2020-12-23 09:59:31,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:59:31,186 INFO L93 Difference]: Finished difference Result 108992 states and 157672 transitions. [2020-12-23 09:59:31,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 09:59:31,186 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 110 [2020-12-23 09:59:31,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:59:31,317 INFO L225 Difference]: With dead ends: 108992 [2020-12-23 09:59:31,317 INFO L226 Difference]: Without dead ends: 95902 [2020-12-23 09:59:31,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-23 09:59:31,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95902 states. [2020-12-23 09:59:35,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95902 to 45874. [2020-12-23 09:59:35,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45874 states. [2020-12-23 09:59:35,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45874 states to 45874 states and 65921 transitions. [2020-12-23 09:59:35,770 INFO L78 Accepts]: Start accepts. Automaton has 45874 states and 65921 transitions. Word has length 110 [2020-12-23 09:59:35,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:59:35,770 INFO L481 AbstractCegarLoop]: Abstraction has 45874 states and 65921 transitions. [2020-12-23 09:59:35,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 09:59:35,770 INFO L276 IsEmpty]: Start isEmpty. Operand 45874 states and 65921 transitions. [2020-12-23 09:59:35,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-23 09:59:35,783 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:59:35,783 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:59:35,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 09:59:35,783 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:59:35,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:59:35,784 INFO L82 PathProgramCache]: Analyzing trace with hash 978140502, now seen corresponding path program 1 times [2020-12-23 09:59:35,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:59:35,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050459229] [2020-12-23 09:59:35,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:59:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:59:35,940 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 09:59:35,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050459229] [2020-12-23 09:59:35,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:59:35,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 09:59:35,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829979008] [2020-12-23 09:59:35,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 09:59:35,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:59:35,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 09:59:35,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:59:35,943 INFO L87 Difference]: Start difference. First operand 45874 states and 65921 transitions. Second operand 8 states. [2020-12-23 09:59:43,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:59:43,761 INFO L93 Difference]: Finished difference Result 122080 states and 176488 transitions. [2020-12-23 09:59:43,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 09:59:43,762 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 110 [2020-12-23 09:59:43,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:59:43,918 INFO L225 Difference]: With dead ends: 122080 [2020-12-23 09:59:43,918 INFO L226 Difference]: Without dead ends: 108990 [2020-12-23 09:59:43,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-23 09:59:44,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108990 states. [2020-12-23 09:59:49,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108990 to 58962. [2020-12-23 09:59:49,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58962 states. [2020-12-23 09:59:49,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58962 states to 58962 states and 84737 transitions. [2020-12-23 09:59:49,342 INFO L78 Accepts]: Start accepts. Automaton has 58962 states and 84737 transitions. Word has length 110 [2020-12-23 09:59:49,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:59:49,343 INFO L481 AbstractCegarLoop]: Abstraction has 58962 states and 84737 transitions. [2020-12-23 09:59:49,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 09:59:49,343 INFO L276 IsEmpty]: Start isEmpty. Operand 58962 states and 84737 transitions. [2020-12-23 09:59:49,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-23 09:59:49,358 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:59:49,358 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:59:49,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 09:59:49,358 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:59:49,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:59:49,359 INFO L82 PathProgramCache]: Analyzing trace with hash -257318538, now seen corresponding path program 1 times [2020-12-23 09:59:49,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:59:49,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833057829] [2020-12-23 09:59:49,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:59:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:59:49,661 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 09:59:49,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833057829] [2020-12-23 09:59:49,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:59:49,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 09:59:49,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717368187] [2020-12-23 09:59:49,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 09:59:49,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:59:49,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 09:59:49,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:59:49,664 INFO L87 Difference]: Start difference. First operand 58962 states and 84737 transitions. Second operand 8 states. [2020-12-23 09:59:58,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:59:58,662 INFO L93 Difference]: Finished difference Result 135168 states and 195304 transitions. [2020-12-23 09:59:58,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 09:59:58,663 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 110 [2020-12-23 09:59:58,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:59:58,802 INFO L225 Difference]: With dead ends: 135168 [2020-12-23 09:59:58,802 INFO L226 Difference]: Without dead ends: 122078 [2020-12-23 09:59:58,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-23 09:59:58,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122078 states. [2020-12-23 10:00:05,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122078 to 72050. [2020-12-23 10:00:05,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72050 states. [2020-12-23 10:00:05,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72050 states to 72050 states and 103553 transitions. [2020-12-23 10:00:05,382 INFO L78 Accepts]: Start accepts. Automaton has 72050 states and 103553 transitions. Word has length 110 [2020-12-23 10:00:05,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:00:05,382 INFO L481 AbstractCegarLoop]: Abstraction has 72050 states and 103553 transitions. [2020-12-23 10:00:05,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 10:00:05,382 INFO L276 IsEmpty]: Start isEmpty. Operand 72050 states and 103553 transitions. [2020-12-23 10:00:05,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-23 10:00:05,396 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:00:05,396 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:00:05,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 10:00:05,397 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:00:05,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:00:05,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1678314090, now seen corresponding path program 1 times [2020-12-23 10:00:05,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:00:05,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725769207] [2020-12-23 10:00:05,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:00:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:00:05,550 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 10:00:05,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725769207] [2020-12-23 10:00:05,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:00:05,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 10:00:05,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120990738] [2020-12-23 10:00:05,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 10:00:05,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:00:05,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 10:00:05,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-23 10:00:05,560 INFO L87 Difference]: Start difference. First operand 72050 states and 103553 transitions. Second operand 8 states. [2020-12-23 10:00:16,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:00:16,792 INFO L93 Difference]: Finished difference Result 148256 states and 214120 transitions. [2020-12-23 10:00:16,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 10:00:16,793 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 110 [2020-12-23 10:00:16,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:00:16,956 INFO L225 Difference]: With dead ends: 148256 [2020-12-23 10:00:16,956 INFO L226 Difference]: Without dead ends: 135166 [2020-12-23 10:00:16,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-23 10:00:17,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135166 states. [2020-12-23 10:00:24,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135166 to 85138. [2020-12-23 10:00:24,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85138 states. [2020-12-23 10:00:25,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85138 states to 85138 states and 122369 transitions. [2020-12-23 10:00:25,162 INFO L78 Accepts]: Start accepts. Automaton has 85138 states and 122369 transitions. Word has length 110 [2020-12-23 10:00:25,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:00:25,163 INFO L481 AbstractCegarLoop]: Abstraction has 85138 states and 122369 transitions. [2020-12-23 10:00:25,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 10:00:25,163 INFO L276 IsEmpty]: Start isEmpty. Operand 85138 states and 122369 transitions. [2020-12-23 10:00:25,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-23 10:00:25,178 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:00:25,179 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:00:25,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 10:00:25,179 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:00:25,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:00:25,180 INFO L82 PathProgramCache]: Analyzing trace with hash 2050832822, now seen corresponding path program 1 times [2020-12-23 10:00:25,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:00:25,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676956333] [2020-12-23 10:00:25,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:00:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:00:25,351 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 10:00:25,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676956333] [2020-12-23 10:00:25,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:00:25,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 10:00:25,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425008616] [2020-12-23 10:00:25,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 10:00:25,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:00:25,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 10:00:25,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-23 10:00:25,354 INFO L87 Difference]: Start difference. First operand 85138 states and 122369 transitions. Second operand 8 states. [2020-12-23 10:00:38,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:00:38,392 INFO L93 Difference]: Finished difference Result 156672 states and 226344 transitions. [2020-12-23 10:00:38,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 10:00:38,393 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 110 [2020-12-23 10:00:38,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:00:38,580 INFO L225 Difference]: With dead ends: 156672 [2020-12-23 10:00:38,580 INFO L226 Difference]: Without dead ends: 145918 [2020-12-23 10:00:38,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-23 10:00:38,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145918 states. [2020-12-23 10:00:48,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145918 to 95890. [2020-12-23 10:00:48,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95890 states. [2020-12-23 10:00:48,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95890 states to 95890 states and 137921 transitions. [2020-12-23 10:00:48,236 INFO L78 Accepts]: Start accepts. Automaton has 95890 states and 137921 transitions. Word has length 110 [2020-12-23 10:00:48,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:00:48,237 INFO L481 AbstractCegarLoop]: Abstraction has 95890 states and 137921 transitions. [2020-12-23 10:00:48,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 10:00:48,237 INFO L276 IsEmpty]: Start isEmpty. Operand 95890 states and 137921 transitions. [2020-12-23 10:00:48,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-23 10:00:48,251 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:00:48,251 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:00:48,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 10:00:48,252 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:00:48,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:00:48,252 INFO L82 PathProgramCache]: Analyzing trace with hash 298519595, now seen corresponding path program 1 times [2020-12-23 10:00:48,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:00:48,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000587593] [2020-12-23 10:00:48,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:00:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:00:48,505 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:00:48,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000587593] [2020-12-23 10:00:48,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:00:48,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:00:48,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983494098] [2020-12-23 10:00:48,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:00:48,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:00:48,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:00:48,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:00:48,508 INFO L87 Difference]: Start difference. First operand 95890 states and 137921 transitions. Second operand 3 states. [2020-12-23 10:00:57,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:00:57,565 INFO L93 Difference]: Finished difference Result 191734 states and 275795 transitions. [2020-12-23 10:00:57,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:00:57,565 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-12-23 10:00:57,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:00:57,852 INFO L225 Difference]: With dead ends: 191734 [2020-12-23 10:00:57,852 INFO L226 Difference]: Without dead ends: 95892 [2020-12-23 10:00:57,915 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 10:00:57,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95892 states. [2020-12-23 10:01:07,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95892 to 95890. [2020-12-23 10:01:07,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95890 states. [2020-12-23 10:01:07,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95890 states to 95890 states and 136753 transitions. [2020-12-23 10:01:07,299 INFO L78 Accepts]: Start accepts. Automaton has 95890 states and 136753 transitions. Word has length 111 [2020-12-23 10:01:07,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:01:07,299 INFO L481 AbstractCegarLoop]: Abstraction has 95890 states and 136753 transitions. [2020-12-23 10:01:07,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:01:07,299 INFO L276 IsEmpty]: Start isEmpty. Operand 95890 states and 136753 transitions. [2020-12-23 10:01:07,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-23 10:01:07,312 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:01:07,312 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:01:07,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 10:01:07,313 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:01:07,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:01:07,313 INFO L82 PathProgramCache]: Analyzing trace with hash 211400801, now seen corresponding path program 1 times [2020-12-23 10:01:07,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:01:07,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877251000] [2020-12-23 10:01:07,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:01:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:01:07,388 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:01:07,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877251000] [2020-12-23 10:01:07,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:01:07,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:01:07,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947308970] [2020-12-23 10:01:07,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:01:07,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:01:07,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:01:07,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:01:07,392 INFO L87 Difference]: Start difference. First operand 95890 states and 136753 transitions. Second operand 3 states. [2020-12-23 10:01:12,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:01:12,402 INFO L93 Difference]: Finished difference Result 143814 states and 205107 transitions. [2020-12-23 10:01:12,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:01:12,402 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-12-23 10:01:12,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:01:12,459 INFO L225 Difference]: With dead ends: 143814 [2020-12-23 10:01:12,460 INFO L226 Difference]: Without dead ends: 47972 [2020-12-23 10:01:12,513 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 10:01:12,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47972 states. [2020-12-23 10:01:17,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47972 to 47970. [2020-12-23 10:01:17,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47970 states. [2020-12-23 10:01:17,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47970 states to 47970 states and 67817 transitions. [2020-12-23 10:01:17,276 INFO L78 Accepts]: Start accepts. Automaton has 47970 states and 67817 transitions. Word has length 111 [2020-12-23 10:01:17,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:01:17,276 INFO L481 AbstractCegarLoop]: Abstraction has 47970 states and 67817 transitions. [2020-12-23 10:01:17,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:01:17,276 INFO L276 IsEmpty]: Start isEmpty. Operand 47970 states and 67817 transitions. [2020-12-23 10:01:17,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-23 10:01:17,282 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:01:17,282 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:01:17,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-23 10:01:17,282 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:01:17,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:01:17,283 INFO L82 PathProgramCache]: Analyzing trace with hash -907874409, now seen corresponding path program 1 times [2020-12-23 10:01:17,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:01:17,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293178067] [2020-12-23 10:01:17,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:01:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:01:17,509 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:01:17,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293178067] [2020-12-23 10:01:17,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116071331] [2020-12-23 10:01:17,510 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 10:01:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:01:17,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 10:01:17,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 10:01:18,153 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 10:01:18,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 10:01:18,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2020-12-23 10:01:18,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029807238] [2020-12-23 10:01:18,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 10:01:18,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:01:18,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 10:01:18,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-12-23 10:01:18,156 INFO L87 Difference]: Start difference. First operand 47970 states and 67817 transitions. Second operand 12 states. [2020-12-23 10:01:19,787 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-12-23 10:01:58,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:01:58,568 INFO L93 Difference]: Finished difference Result 380046 states and 532939 transitions. [2020-12-23 10:01:58,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-12-23 10:01:58,568 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 111 [2020-12-23 10:01:58,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:01:59,312 INFO L225 Difference]: With dead ends: 380046 [2020-12-23 10:01:59,312 INFO L226 Difference]: Without dead ends: 332124 [2020-12-23 10:01:59,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1324 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=797, Invalid=3109, Unknown=0, NotChecked=0, Total=3906 [2020-12-23 10:01:59,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332124 states. [2020-12-23 10:02:22,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332124 to 186986. [2020-12-23 10:02:22,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186986 states. [2020-12-23 10:02:22,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186986 states to 186986 states and 259565 transitions. [2020-12-23 10:02:22,872 INFO L78 Accepts]: Start accepts. Automaton has 186986 states and 259565 transitions. Word has length 111 [2020-12-23 10:02:22,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:02:22,872 INFO L481 AbstractCegarLoop]: Abstraction has 186986 states and 259565 transitions. [2020-12-23 10:02:22,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 10:02:22,872 INFO L276 IsEmpty]: Start isEmpty. Operand 186986 states and 259565 transitions. [2020-12-23 10:02:22,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-23 10:02:22,892 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:02:22,892 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 10:02:23,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-23 10:02:23,108 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:02:23,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:02:23,110 INFO L82 PathProgramCache]: Analyzing trace with hash 754043892, now seen corresponding path program 1 times [2020-12-23 10:02:23,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:02:23,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892821558] [2020-12-23 10:02:23,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:02:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:02:23,360 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:02:23,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892821558] [2020-12-23 10:02:23,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388676127] [2020-12-23 10:02:23,360 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 10:02:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:02:23,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 10:02:23,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 10:02:23,730 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 10:02:23,989 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:02:23,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 10:02:23,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-23 10:02:23,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684809759] [2020-12-23 10:02:23,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-23 10:02:23,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:02:23,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-23 10:02:23,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-12-23 10:02:23,992 INFO L87 Difference]: Start difference. First operand 186986 states and 259565 transitions. Second operand 17 states.