/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 19:46:03,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 19:46:03,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 19:46:03,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 19:46:03,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 19:46:03,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 19:46:03,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 19:46:03,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 19:46:03,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 19:46:03,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 19:46:03,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 19:46:03,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 19:46:03,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 19:46:03,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 19:46:03,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 19:46:03,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 19:46:03,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 19:46:03,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 19:46:03,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 19:46:03,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 19:46:03,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 19:46:03,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 19:46:03,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 19:46:03,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 19:46:03,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 19:46:03,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 19:46:03,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 19:46:03,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 19:46:03,976 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 19:46:03,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 19:46:03,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 19:46:03,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 19:46:03,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 19:46:03,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 19:46:03,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 19:46:03,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 19:46:03,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 19:46:03,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 19:46:04,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 19:46:04,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 19:46:04,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 19:46:04,015 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 19:46:04,094 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 19:46:04,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 19:46:04,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 19:46:04,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 19:46:04,106 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 19:46:04,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 19:46:04,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 19:46:04,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 19:46:04,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 19:46:04,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 19:46:04,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 19:46:04,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 19:46:04,109 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 19:46:04,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 19:46:04,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 19:46:04,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 19:46:04,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 19:46:04,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 19:46:04,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 19:46:04,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 19:46:04,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 19:46:04,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 19:46:04,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 19:46:04,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 19:46:04,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 19:46:04,115 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 19:46:04,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 19:46:04,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 19:46:04,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 19:46:04,824 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 19:46:04,825 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 19:46:04,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c [2021-01-06 19:46:04,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f12fc7448/5d1571d9decc4db18f06d4e766647114/FLAGef924ae16 [2021-01-06 19:46:05,690 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 19:46:05,691 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c [2021-01-06 19:46:05,703 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f12fc7448/5d1571d9decc4db18f06d4e766647114/FLAGef924ae16 [2021-01-06 19:46:06,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f12fc7448/5d1571d9decc4db18f06d4e766647114 [2021-01-06 19:46:06,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 19:46:06,045 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 19:46:06,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 19:46:06,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 19:46:06,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 19:46:06,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:46:06" (1/1) ... [2021-01-06 19:46:06,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a184ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:46:06, skipping insertion in model container [2021-01-06 19:46:06,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:46:06" (1/1) ... [2021-01-06 19:46:06,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 19:46:06,130 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[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m5~0,] left hand side expression in assignment: lhs: VariableLHS[~m5~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2021-01-06 19:46:06,521 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c[12639,12652] [2021-01-06 19:46:06,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:46:06,535 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[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m5~0,] left hand side expression in assignment: lhs: VariableLHS[~m5~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2021-01-06 19:46:06,613 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c[12639,12652] [2021-01-06 19:46:06,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:46:06,640 INFO L208 MainTranslator]: Completed translation [2021-01-06 19:46:06,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:46:06 WrapperNode [2021-01-06 19:46:06,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 19:46:06,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 19:46:06,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 19:46:06,644 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 19:46:06,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:46:06" (1/1) ... [2021-01-06 19:46:06,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:46:06" (1/1) ... [2021-01-06 19:46:06,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 19:46:06,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 19:46:06,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 19:46:06,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 19:46:06,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:46:06" (1/1) ... [2021-01-06 19:46:06,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:46:06" (1/1) ... [2021-01-06 19:46:06,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:46:06" (1/1) ... [2021-01-06 19:46:06,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:46:06" (1/1) ... [2021-01-06 19:46:06,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:46:06" (1/1) ... [2021-01-06 19:46:06,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:46:06" (1/1) ... [2021-01-06 19:46:06,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:46:06" (1/1) ... [2021-01-06 19:46:06,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 19:46:06,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 19:46:06,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 19:46:06,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 19:46:06,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:46:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 19:46:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 19:46:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 19:46:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 19:46:06,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 19:46:07,748 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 19:46:07,749 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2021-01-06 19:46:07,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:46:07 BoogieIcfgContainer [2021-01-06 19:46:07,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 19:46:07,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 19:46:07,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 19:46:07,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 19:46:07,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 07:46:06" (1/3) ... [2021-01-06 19:46:07,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62407446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:46:07, skipping insertion in model container [2021-01-06 19:46:07,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:46:06" (2/3) ... [2021-01-06 19:46:07,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62407446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:46:07, skipping insertion in model container [2021-01-06 19:46:07,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:46:07" (3/3) ... [2021-01-06 19:46:07,760 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c [2021-01-06 19:46:07,768 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 19:46:07,774 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 19:46:07,795 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 19:46:07,824 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 19:46:07,824 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 19:46:07,825 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 19:46:07,825 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 19:46:07,825 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 19:46:07,825 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 19:46:07,825 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 19:46:07,825 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 19:46:07,845 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states. [2021-01-06 19:46:07,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 19:46:07,854 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:07,855 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] [2021-01-06 19:46:07,855 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:07,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:07,862 INFO L82 PathProgramCache]: Analyzing trace with hash -737936725, now seen corresponding path program 1 times [2021-01-06 19:46:07,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:07,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394230396] [2021-01-06 19:46:07,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:08,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:08,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394230396] [2021-01-06 19:46:08,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:08,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 19:46:08,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829791076] [2021-01-06 19:46:08,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 19:46:08,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:08,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 19:46:08,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 19:46:08,126 INFO L87 Difference]: Start difference. First operand 119 states. Second operand 2 states. [2021-01-06 19:46:08,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:08,158 INFO L93 Difference]: Finished difference Result 201 states and 330 transitions. [2021-01-06 19:46:08,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 19:46:08,160 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 33 [2021-01-06 19:46:08,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:08,172 INFO L225 Difference]: With dead ends: 201 [2021-01-06 19:46:08,173 INFO L226 Difference]: Without dead ends: 115 [2021-01-06 19:46:08,176 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 [2021-01-06 19:46:08,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-01-06 19:46:08,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-01-06 19:46:08,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2021-01-06 19:46:08,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 193 transitions. [2021-01-06 19:46:08,240 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 193 transitions. Word has length 33 [2021-01-06 19:46:08,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:08,241 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 193 transitions. [2021-01-06 19:46:08,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 19:46:08,241 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 193 transitions. [2021-01-06 19:46:08,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 19:46:08,243 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:08,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:46:08,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 19:46:08,244 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:08,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:08,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1247409815, now seen corresponding path program 1 times [2021-01-06 19:46:08,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:08,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086524089] [2021-01-06 19:46:08,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:08,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:08,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086524089] [2021-01-06 19:46:08,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:08,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:46:08,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186627784] [2021-01-06 19:46:08,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:46:08,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:08,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:46:08,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:46:08,411 INFO L87 Difference]: Start difference. First operand 115 states and 193 transitions. Second operand 5 states. [2021-01-06 19:46:08,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:08,507 INFO L93 Difference]: Finished difference Result 196 states and 320 transitions. [2021-01-06 19:46:08,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:46:08,508 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2021-01-06 19:46:08,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:08,510 INFO L225 Difference]: With dead ends: 196 [2021-01-06 19:46:08,510 INFO L226 Difference]: Without dead ends: 115 [2021-01-06 19:46:08,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:46:08,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-01-06 19:46:08,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-01-06 19:46:08,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2021-01-06 19:46:08,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 161 transitions. [2021-01-06 19:46:08,525 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 161 transitions. Word has length 33 [2021-01-06 19:46:08,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:08,526 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 161 transitions. [2021-01-06 19:46:08,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:46:08,526 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 161 transitions. [2021-01-06 19:46:08,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-06 19:46:08,528 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:08,528 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] [2021-01-06 19:46:08,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 19:46:08,529 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:08,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:08,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1143227198, now seen corresponding path program 1 times [2021-01-06 19:46:08,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:08,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149279004] [2021-01-06 19:46:08,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:08,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:08,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149279004] [2021-01-06 19:46:08,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:08,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:46:08,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457333680] [2021-01-06 19:46:08,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:46:08,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:08,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:46:08,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:08,675 INFO L87 Difference]: Start difference. First operand 115 states and 161 transitions. Second operand 3 states. [2021-01-06 19:46:08,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:08,703 INFO L93 Difference]: Finished difference Result 257 states and 387 transitions. [2021-01-06 19:46:08,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:46:08,704 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2021-01-06 19:46:08,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:08,706 INFO L225 Difference]: With dead ends: 257 [2021-01-06 19:46:08,706 INFO L226 Difference]: Without dead ends: 180 [2021-01-06 19:46:08,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:08,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-01-06 19:46:08,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2021-01-06 19:46:08,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2021-01-06 19:46:08,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 262 transitions. [2021-01-06 19:46:08,726 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 262 transitions. Word has length 64 [2021-01-06 19:46:08,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:08,727 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 262 transitions. [2021-01-06 19:46:08,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:46:08,727 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 262 transitions. [2021-01-06 19:46:08,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-01-06 19:46:08,729 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:08,730 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] [2021-01-06 19:46:08,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 19:46:08,730 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:08,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:08,731 INFO L82 PathProgramCache]: Analyzing trace with hash -969420354, now seen corresponding path program 1 times [2021-01-06 19:46:08,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:08,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342651600] [2021-01-06 19:46:08,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:08,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:08,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342651600] [2021-01-06 19:46:08,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:08,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:46:08,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316185907] [2021-01-06 19:46:08,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:46:08,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:08,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:46:08,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:08,842 INFO L87 Difference]: Start difference. First operand 178 states and 262 transitions. Second operand 3 states. [2021-01-06 19:46:08,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:08,889 INFO L93 Difference]: Finished difference Result 434 states and 670 transitions. [2021-01-06 19:46:08,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:46:08,891 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2021-01-06 19:46:08,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:08,897 INFO L225 Difference]: With dead ends: 434 [2021-01-06 19:46:08,898 INFO L226 Difference]: Without dead ends: 294 [2021-01-06 19:46:08,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:08,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-01-06 19:46:08,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 292. [2021-01-06 19:46:08,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2021-01-06 19:46:08,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 443 transitions. [2021-01-06 19:46:08,946 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 443 transitions. Word has length 65 [2021-01-06 19:46:08,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:08,946 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 443 transitions. [2021-01-06 19:46:08,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:46:08,947 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 443 transitions. [2021-01-06 19:46:08,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-01-06 19:46:08,949 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:08,949 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] [2021-01-06 19:46:08,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 19:46:08,949 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:08,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:08,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1280140338, now seen corresponding path program 1 times [2021-01-06 19:46:08,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:08,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944409862] [2021-01-06 19:46:08,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:09,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:09,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944409862] [2021-01-06 19:46:09,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:09,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:46:09,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978115707] [2021-01-06 19:46:09,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:46:09,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:09,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:46:09,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:09,091 INFO L87 Difference]: Start difference. First operand 292 states and 443 transitions. Second operand 3 states. [2021-01-06 19:46:09,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:09,148 INFO L93 Difference]: Finished difference Result 752 states and 1173 transitions. [2021-01-06 19:46:09,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:46:09,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2021-01-06 19:46:09,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:09,162 INFO L225 Difference]: With dead ends: 752 [2021-01-06 19:46:09,162 INFO L226 Difference]: Without dead ends: 498 [2021-01-06 19:46:09,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:09,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2021-01-06 19:46:09,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 496. [2021-01-06 19:46:09,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2021-01-06 19:46:09,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 763 transitions. [2021-01-06 19:46:09,210 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 763 transitions. Word has length 66 [2021-01-06 19:46:09,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:09,211 INFO L481 AbstractCegarLoop]: Abstraction has 496 states and 763 transitions. [2021-01-06 19:46:09,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:46:09,212 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 763 transitions. [2021-01-06 19:46:09,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 19:46:09,214 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:09,214 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] [2021-01-06 19:46:09,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 19:46:09,215 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:09,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:09,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1226283954, now seen corresponding path program 1 times [2021-01-06 19:46:09,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:09,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896964805] [2021-01-06 19:46:09,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:09,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:09,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896964805] [2021-01-06 19:46:09,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:09,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:46:09,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350651205] [2021-01-06 19:46:09,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:46:09,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:09,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:46:09,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:09,325 INFO L87 Difference]: Start difference. First operand 496 states and 763 transitions. Second operand 3 states. [2021-01-06 19:46:09,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:09,380 INFO L93 Difference]: Finished difference Result 1316 states and 2053 transitions. [2021-01-06 19:46:09,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:46:09,380 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2021-01-06 19:46:09,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:09,386 INFO L225 Difference]: With dead ends: 1316 [2021-01-06 19:46:09,386 INFO L226 Difference]: Without dead ends: 858 [2021-01-06 19:46:09,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:09,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2021-01-06 19:46:09,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 856. [2021-01-06 19:46:09,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 856 states. [2021-01-06 19:46:09,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1319 transitions. [2021-01-06 19:46:09,433 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1319 transitions. Word has length 67 [2021-01-06 19:46:09,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:09,434 INFO L481 AbstractCegarLoop]: Abstraction has 856 states and 1319 transitions. [2021-01-06 19:46:09,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:46:09,434 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1319 transitions. [2021-01-06 19:46:09,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-01-06 19:46:09,437 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:09,438 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] [2021-01-06 19:46:09,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 19:46:09,438 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:09,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:09,439 INFO L82 PathProgramCache]: Analyzing trace with hash 211928158, now seen corresponding path program 1 times [2021-01-06 19:46:09,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:09,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320304682] [2021-01-06 19:46:09,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:09,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:09,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320304682] [2021-01-06 19:46:09,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:09,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 19:46:09,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066969899] [2021-01-06 19:46:09,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 19:46:09,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:09,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 19:46:09,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:46:09,538 INFO L87 Difference]: Start difference. First operand 856 states and 1319 transitions. Second operand 7 states. [2021-01-06 19:46:09,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:09,827 INFO L93 Difference]: Finished difference Result 5764 states and 9005 transitions. [2021-01-06 19:46:09,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 19:46:09,827 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2021-01-06 19:46:09,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:09,855 INFO L225 Difference]: With dead ends: 5764 [2021-01-06 19:46:09,855 INFO L226 Difference]: Without dead ends: 4946 [2021-01-06 19:46:09,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-01-06 19:46:09,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4946 states. [2021-01-06 19:46:09,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4946 to 1672. [2021-01-06 19:46:09,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1672 states. [2021-01-06 19:46:09,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 2567 transitions. [2021-01-06 19:46:09,982 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 2567 transitions. Word has length 68 [2021-01-06 19:46:09,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:09,983 INFO L481 AbstractCegarLoop]: Abstraction has 1672 states and 2567 transitions. [2021-01-06 19:46:09,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 19:46:09,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 2567 transitions. [2021-01-06 19:46:09,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-01-06 19:46:09,984 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:09,985 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] [2021-01-06 19:46:09,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 19:46:09,985 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:09,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:09,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1891482376, now seen corresponding path program 1 times [2021-01-06 19:46:09,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:09,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555405086] [2021-01-06 19:46:09,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:10,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:10,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555405086] [2021-01-06 19:46:10,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:10,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 19:46:10,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636013403] [2021-01-06 19:46:10,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 19:46:10,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:10,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 19:46:10,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:46:10,148 INFO L87 Difference]: Start difference. First operand 1672 states and 2567 transitions. Second operand 7 states. [2021-01-06 19:46:10,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:10,646 INFO L93 Difference]: Finished difference Result 9010 states and 13772 transitions. [2021-01-06 19:46:10,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 19:46:10,647 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2021-01-06 19:46:10,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:10,685 INFO L225 Difference]: With dead ends: 9010 [2021-01-06 19:46:10,685 INFO L226 Difference]: Without dead ends: 7376 [2021-01-06 19:46:10,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:46:10,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7376 states. [2021-01-06 19:46:11,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7376 to 7368. [2021-01-06 19:46:11,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7368 states. [2021-01-06 19:46:11,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7368 states to 7368 states and 11207 transitions. [2021-01-06 19:46:11,175 INFO L78 Accepts]: Start accepts. Automaton has 7368 states and 11207 transitions. Word has length 69 [2021-01-06 19:46:11,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:11,175 INFO L481 AbstractCegarLoop]: Abstraction has 7368 states and 11207 transitions. [2021-01-06 19:46:11,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 19:46:11,176 INFO L276 IsEmpty]: Start isEmpty. Operand 7368 states and 11207 transitions. [2021-01-06 19:46:11,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-01-06 19:46:11,177 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:11,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:46:11,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 19:46:11,178 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:11,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:11,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1121612062, now seen corresponding path program 1 times [2021-01-06 19:46:11,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:11,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729735471] [2021-01-06 19:46:11,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:11,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:11,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:11,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729735471] [2021-01-06 19:46:11,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:11,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:46:11,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365546547] [2021-01-06 19:46:11,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:46:11,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:11,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:46:11,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:11,301 INFO L87 Difference]: Start difference. First operand 7368 states and 11207 transitions. Second operand 3 states. [2021-01-06 19:46:11,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:11,930 INFO L93 Difference]: Finished difference Result 20588 states and 31145 transitions. [2021-01-06 19:46:11,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:46:11,931 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2021-01-06 19:46:11,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:12,013 INFO L225 Difference]: With dead ends: 20588 [2021-01-06 19:46:12,013 INFO L226 Difference]: Without dead ends: 13258 [2021-01-06 19:46:12,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:12,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13258 states. [2021-01-06 19:46:12,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13258 to 13256. [2021-01-06 19:46:12,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13256 states. [2021-01-06 19:46:12,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13256 states to 13256 states and 19815 transitions. [2021-01-06 19:46:12,887 INFO L78 Accepts]: Start accepts. Automaton has 13256 states and 19815 transitions. Word has length 69 [2021-01-06 19:46:12,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:12,887 INFO L481 AbstractCegarLoop]: Abstraction has 13256 states and 19815 transitions. [2021-01-06 19:46:12,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:46:12,887 INFO L276 IsEmpty]: Start isEmpty. Operand 13256 states and 19815 transitions. [2021-01-06 19:46:12,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-01-06 19:46:12,888 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:12,889 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] [2021-01-06 19:46:12,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 19:46:12,889 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:12,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:12,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1170027667, now seen corresponding path program 1 times [2021-01-06 19:46:12,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:12,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421252104] [2021-01-06 19:46:12,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:13,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:13,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421252104] [2021-01-06 19:46:13,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:13,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 19:46:13,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889945681] [2021-01-06 19:46:13,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 19:46:13,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:13,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 19:46:13,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-01-06 19:46:13,035 INFO L87 Difference]: Start difference. First operand 13256 states and 19815 transitions. Second operand 8 states. [2021-01-06 19:46:14,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:14,543 INFO L93 Difference]: Finished difference Result 27754 states and 40872 transitions. [2021-01-06 19:46:14,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 19:46:14,543 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2021-01-06 19:46:14,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:14,611 INFO L225 Difference]: With dead ends: 27754 [2021-01-06 19:46:14,611 INFO L226 Difference]: Without dead ends: 27752 [2021-01-06 19:46:14,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-01-06 19:46:14,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27752 states. [2021-01-06 19:46:15,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27752 to 14216. [2021-01-06 19:46:15,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14216 states. [2021-01-06 19:46:15,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14216 states to 14216 states and 20775 transitions. [2021-01-06 19:46:15,733 INFO L78 Accepts]: Start accepts. Automaton has 14216 states and 20775 transitions. Word has length 70 [2021-01-06 19:46:15,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:15,733 INFO L481 AbstractCegarLoop]: Abstraction has 14216 states and 20775 transitions. [2021-01-06 19:46:15,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 19:46:15,735 INFO L276 IsEmpty]: Start isEmpty. Operand 14216 states and 20775 transitions. [2021-01-06 19:46:15,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-06 19:46:15,737 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:15,738 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] [2021-01-06 19:46:15,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 19:46:15,739 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:15,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:15,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1963697995, now seen corresponding path program 1 times [2021-01-06 19:46:15,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:15,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35331215] [2021-01-06 19:46:15,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:15,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:15,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35331215] [2021-01-06 19:46:15,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:15,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:46:15,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594425957] [2021-01-06 19:46:15,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:46:15,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:15,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:46:15,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:15,807 INFO L87 Difference]: Start difference. First operand 14216 states and 20775 transitions. Second operand 3 states. [2021-01-06 19:46:17,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:17,137 INFO L93 Difference]: Finished difference Result 34366 states and 50235 transitions. [2021-01-06 19:46:17,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:46:17,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2021-01-06 19:46:17,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:17,186 INFO L225 Difference]: With dead ends: 34366 [2021-01-06 19:46:17,186 INFO L226 Difference]: Without dead ends: 20188 [2021-01-06 19:46:17,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:17,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20188 states. [2021-01-06 19:46:18,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20188 to 20186. [2021-01-06 19:46:18,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20186 states. [2021-01-06 19:46:18,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20186 states to 20186 states and 29353 transitions. [2021-01-06 19:46:18,495 INFO L78 Accepts]: Start accepts. Automaton has 20186 states and 29353 transitions. Word has length 71 [2021-01-06 19:46:18,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:18,495 INFO L481 AbstractCegarLoop]: Abstraction has 20186 states and 29353 transitions. [2021-01-06 19:46:18,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:46:18,496 INFO L276 IsEmpty]: Start isEmpty. Operand 20186 states and 29353 transitions. [2021-01-06 19:46:18,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-01-06 19:46:18,511 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:18,512 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] [2021-01-06 19:46:18,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 19:46:18,513 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:18,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:18,519 INFO L82 PathProgramCache]: Analyzing trace with hash 399762008, now seen corresponding path program 1 times [2021-01-06 19:46:18,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:18,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595330739] [2021-01-06 19:46:18,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:18,756 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 19:46:18,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595330739] [2021-01-06 19:46:18,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897848761] [2021-01-06 19:46:18,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:46:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:18,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 19:46:18,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:46:19,083 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 19:46:19,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:46:19,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 7 [2021-01-06 19:46:19,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847685782] [2021-01-06 19:46:19,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 19:46:19,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:19,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 19:46:19,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:46:19,091 INFO L87 Difference]: Start difference. First operand 20186 states and 29353 transitions. Second operand 7 states. [2021-01-06 19:46:21,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:21,863 INFO L93 Difference]: Finished difference Result 50068 states and 73133 transitions. [2021-01-06 19:46:21,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:46:21,869 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2021-01-06 19:46:21,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:21,963 INFO L225 Difference]: With dead ends: 50068 [2021-01-06 19:46:21,964 INFO L226 Difference]: Without dead ends: 35890 [2021-01-06 19:46:21,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-01-06 19:46:22,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35890 states. [2021-01-06 19:46:24,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35890 to 33498. [2021-01-06 19:46:24,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33498 states. [2021-01-06 19:46:24,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33498 states to 33498 states and 48521 transitions. [2021-01-06 19:46:24,099 INFO L78 Accepts]: Start accepts. Automaton has 33498 states and 48521 transitions. Word has length 98 [2021-01-06 19:46:24,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:24,099 INFO L481 AbstractCegarLoop]: Abstraction has 33498 states and 48521 transitions. [2021-01-06 19:46:24,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 19:46:24,100 INFO L276 IsEmpty]: Start isEmpty. Operand 33498 states and 48521 transitions. [2021-01-06 19:46:24,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-01-06 19:46:24,115 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:24,116 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:46:24,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-06 19:46:24,332 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:24,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:24,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1801045658, now seen corresponding path program 1 times [2021-01-06 19:46:24,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:24,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397216058] [2021-01-06 19:46:24,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:24,557 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-06 19:46:24,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397216058] [2021-01-06 19:46:24,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:24,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 19:46:24,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995170774] [2021-01-06 19:46:24,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 19:46:24,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:24,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 19:46:24,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:46:24,567 INFO L87 Difference]: Start difference. First operand 33498 states and 48521 transitions. Second operand 7 states. [2021-01-06 19:46:27,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:27,211 INFO L93 Difference]: Finished difference Result 80310 states and 117295 transitions. [2021-01-06 19:46:27,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 19:46:27,212 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2021-01-06 19:46:27,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:27,403 INFO L225 Difference]: With dead ends: 80310 [2021-01-06 19:46:27,404 INFO L226 Difference]: Without dead ends: 66132 [2021-01-06 19:46:27,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-06 19:46:27,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66132 states. [2021-01-06 19:46:29,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66132 to 46386. [2021-01-06 19:46:29,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46386 states. [2021-01-06 19:46:30,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46386 states to 46386 states and 67177 transitions. [2021-01-06 19:46:30,003 INFO L78 Accepts]: Start accepts. Automaton has 46386 states and 67177 transitions. Word has length 99 [2021-01-06 19:46:30,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:30,004 INFO L481 AbstractCegarLoop]: Abstraction has 46386 states and 67177 transitions. [2021-01-06 19:46:30,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 19:46:30,004 INFO L276 IsEmpty]: Start isEmpty. Operand 46386 states and 67177 transitions. [2021-01-06 19:46:30,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-01-06 19:46:30,019 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:30,020 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:46:30,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 19:46:30,020 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:30,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:30,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1823116810, now seen corresponding path program 1 times [2021-01-06 19:46:30,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:30,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975107712] [2021-01-06 19:46:30,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:30,101 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:30,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975107712] [2021-01-06 19:46:30,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:30,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:46:30,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556760846] [2021-01-06 19:46:30,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:46:30,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:30,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:46:30,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:30,104 INFO L87 Difference]: Start difference. First operand 46386 states and 67177 transitions. Second operand 3 states. [2021-01-06 19:46:33,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:33,662 INFO L93 Difference]: Finished difference Result 103262 states and 149604 transitions. [2021-01-06 19:46:33,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:46:33,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2021-01-06 19:46:33,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:33,794 INFO L225 Difference]: With dead ends: 103262 [2021-01-06 19:46:33,794 INFO L226 Difference]: Without dead ends: 71508 [2021-01-06 19:46:33,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:33,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71508 states. [2021-01-06 19:46:37,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71508 to 67666. [2021-01-06 19:46:37,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67666 states. [2021-01-06 19:46:37,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67666 states to 67666 states and 97050 transitions. [2021-01-06 19:46:37,565 INFO L78 Accepts]: Start accepts. Automaton has 67666 states and 97050 transitions. Word has length 99 [2021-01-06 19:46:37,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:37,565 INFO L481 AbstractCegarLoop]: Abstraction has 67666 states and 97050 transitions. [2021-01-06 19:46:37,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:46:37,566 INFO L276 IsEmpty]: Start isEmpty. Operand 67666 states and 97050 transitions. [2021-01-06 19:46:37,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-01-06 19:46:37,583 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:37,583 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:46:37,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 19:46:37,583 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:37,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:37,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1418738454, now seen corresponding path program 1 times [2021-01-06 19:46:37,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:37,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478062631] [2021-01-06 19:46:37,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:37,639 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:37,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478062631] [2021-01-06 19:46:37,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:37,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:46:37,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154087519] [2021-01-06 19:46:37,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:46:37,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:37,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:46:37,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:37,642 INFO L87 Difference]: Start difference. First operand 67666 states and 97050 transitions. Second operand 3 states. [2021-01-06 19:46:41,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:41,243 INFO L93 Difference]: Finished difference Result 100629 states and 144018 transitions. [2021-01-06 19:46:41,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:46:41,244 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2021-01-06 19:46:41,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:41,337 INFO L225 Difference]: With dead ends: 100629 [2021-01-06 19:46:41,337 INFO L226 Difference]: Without dead ends: 69583 [2021-01-06 19:46:41,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:41,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69583 states. [2021-01-06 19:46:44,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69583 to 67771. [2021-01-06 19:46:44,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67771 states. [2021-01-06 19:46:44,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67771 states to 67771 states and 95765 transitions. [2021-01-06 19:46:44,603 INFO L78 Accepts]: Start accepts. Automaton has 67771 states and 95765 transitions. Word has length 99 [2021-01-06 19:46:44,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:44,603 INFO L481 AbstractCegarLoop]: Abstraction has 67771 states and 95765 transitions. [2021-01-06 19:46:44,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:46:44,603 INFO L276 IsEmpty]: Start isEmpty. Operand 67771 states and 95765 transitions. [2021-01-06 19:46:44,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-01-06 19:46:44,618 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:44,618 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:46:44,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-06 19:46:44,619 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:44,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:44,619 INFO L82 PathProgramCache]: Analyzing trace with hash 991392390, now seen corresponding path program 1 times [2021-01-06 19:46:44,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:44,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761253090] [2021-01-06 19:46:44,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:44,673 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:44,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761253090] [2021-01-06 19:46:44,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:44,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:46:44,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427754871] [2021-01-06 19:46:44,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:46:44,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:44,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:46:44,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:44,675 INFO L87 Difference]: Start difference. First operand 67771 states and 95765 transitions. Second operand 3 states. [2021-01-06 19:46:48,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:48,635 INFO L93 Difference]: Finished difference Result 136489 states and 192632 transitions. [2021-01-06 19:46:48,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:46:48,636 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2021-01-06 19:46:48,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:48,747 INFO L225 Difference]: With dead ends: 136489 [2021-01-06 19:46:48,747 INFO L226 Difference]: Without dead ends: 92101 [2021-01-06 19:46:48,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:48,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92101 states. [2021-01-06 19:46:53,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92101 to 90229. [2021-01-06 19:46:53,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90229 states. [2021-01-06 19:46:53,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90229 states to 90229 states and 125726 transitions. [2021-01-06 19:46:53,331 INFO L78 Accepts]: Start accepts. Automaton has 90229 states and 125726 transitions. Word has length 99 [2021-01-06 19:46:53,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:53,331 INFO L481 AbstractCegarLoop]: Abstraction has 90229 states and 125726 transitions. [2021-01-06 19:46:53,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:46:53,331 INFO L276 IsEmpty]: Start isEmpty. Operand 90229 states and 125726 transitions. [2021-01-06 19:46:53,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-01-06 19:46:53,346 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:53,347 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:46:53,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-06 19:46:53,347 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:53,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:53,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1121040196, now seen corresponding path program 1 times [2021-01-06 19:46:53,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:53,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728011301] [2021-01-06 19:46:53,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:53,417 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:53,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728011301] [2021-01-06 19:46:53,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:53,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:46:53,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238328346] [2021-01-06 19:46:53,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:46:53,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:53,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:46:53,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:53,420 INFO L87 Difference]: Start difference. First operand 90229 states and 125726 transitions. Second operand 3 states. [2021-01-06 19:47:00,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:47:00,736 INFO L93 Difference]: Finished difference Result 254386 states and 353882 transitions. [2021-01-06 19:47:00,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:47:00,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2021-01-06 19:47:00,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:47:01,004 INFO L225 Difference]: With dead ends: 254386 [2021-01-06 19:47:01,004 INFO L226 Difference]: Without dead ends: 169682 [2021-01-06 19:47:01,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:47:01,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169682 states. [2021-01-06 19:47:09,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169682 to 169468. [2021-01-06 19:47:09,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169468 states. [2021-01-06 19:47:09,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169468 states to 169468 states and 233363 transitions. [2021-01-06 19:47:09,864 INFO L78 Accepts]: Start accepts. Automaton has 169468 states and 233363 transitions. Word has length 99 [2021-01-06 19:47:09,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:47:09,865 INFO L481 AbstractCegarLoop]: Abstraction has 169468 states and 233363 transitions. [2021-01-06 19:47:09,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:47:09,866 INFO L276 IsEmpty]: Start isEmpty. Operand 169468 states and 233363 transitions. [2021-01-06 19:47:09,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-01-06 19:47:09,898 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:47:09,898 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:47:09,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-06 19:47:09,901 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:47:09,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:47:09,901 INFO L82 PathProgramCache]: Analyzing trace with hash -173536388, now seen corresponding path program 1 times [2021-01-06 19:47:09,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:47:09,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895920549] [2021-01-06 19:47:09,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:47:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:47:10,062 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-01-06 19:47:10,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895920549] [2021-01-06 19:47:10,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:47:10,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 19:47:10,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914484870] [2021-01-06 19:47:10,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 19:47:10,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:47:10,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 19:47:10,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:47:10,068 INFO L87 Difference]: Start difference. First operand 169468 states and 233363 transitions. Second operand 7 states. [2021-01-06 19:47:23,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:47:23,230 INFO L93 Difference]: Finished difference Result 348957 states and 485709 transitions. [2021-01-06 19:47:23,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 19:47:23,231 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2021-01-06 19:47:23,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:47:23,943 INFO L225 Difference]: With dead ends: 348957 [2021-01-06 19:47:23,943 INFO L226 Difference]: Without dead ends: 321563 [2021-01-06 19:47:24,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-06 19:47:24,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321563 states. [2021-01-06 19:47:34,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321563 to 195708. [2021-01-06 19:47:34,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195708 states. [2021-01-06 19:47:34,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195708 states to 195708 states and 269779 transitions. [2021-01-06 19:47:34,707 INFO L78 Accepts]: Start accepts. Automaton has 195708 states and 269779 transitions. Word has length 99 [2021-01-06 19:47:34,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:47:34,708 INFO L481 AbstractCegarLoop]: Abstraction has 195708 states and 269779 transitions. [2021-01-06 19:47:34,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 19:47:34,708 INFO L276 IsEmpty]: Start isEmpty. Operand 195708 states and 269779 transitions. [2021-01-06 19:47:35,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-01-06 19:47:35,046 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:47:35,047 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:47:35,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-01-06 19:47:35,047 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:47:35,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:47:35,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1655579334, now seen corresponding path program 1 times [2021-01-06 19:47:35,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:47:35,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923823613] [2021-01-06 19:47:35,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:47:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:47:35,171 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-01-06 19:47:35,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923823613] [2021-01-06 19:47:35,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:47:35,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 19:47:35,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933445876] [2021-01-06 19:47:35,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 19:47:35,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:47:35,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 19:47:35,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:47:35,174 INFO L87 Difference]: Start difference. First operand 195708 states and 269779 transitions. Second operand 7 states. [2021-01-06 19:47:50,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:47:50,011 INFO L93 Difference]: Finished difference Result 388264 states and 540525 transitions. [2021-01-06 19:47:50,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 19:47:50,012 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2021-01-06 19:47:50,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:47:50,823 INFO L225 Difference]: With dead ends: 388264 [2021-01-06 19:47:50,823 INFO L226 Difference]: Without dead ends: 347216 [2021-01-06 19:47:50,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-06 19:47:51,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347216 states. [2021-01-06 19:48:03,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347216 to 234988. [2021-01-06 19:48:03,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234988 states. [2021-01-06 19:48:04,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234988 states to 234988 states and 324147 transitions. [2021-01-06 19:48:04,206 INFO L78 Accepts]: Start accepts. Automaton has 234988 states and 324147 transitions. Word has length 99 [2021-01-06 19:48:04,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:48:04,207 INFO L481 AbstractCegarLoop]: Abstraction has 234988 states and 324147 transitions. [2021-01-06 19:48:04,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 19:48:04,207 INFO L276 IsEmpty]: Start isEmpty. Operand 234988 states and 324147 transitions. [2021-01-06 19:48:04,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-01-06 19:48:04,225 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:48:04,225 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:48:04,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-01-06 19:48:04,225 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:48:04,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:48:04,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1881072996, now seen corresponding path program 1 times [2021-01-06 19:48:04,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:48:04,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536243916] [2021-01-06 19:48:04,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:48:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:48:04,345 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 19:48:04,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536243916] [2021-01-06 19:48:04,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:48:04,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 19:48:04,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726498080] [2021-01-06 19:48:04,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 19:48:04,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:48:04,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 19:48:04,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:48:04,347 INFO L87 Difference]: Start difference. First operand 234988 states and 324147 transitions. Second operand 7 states. [2021-01-06 19:48:22,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:48:22,002 INFO L93 Difference]: Finished difference Result 435535 states and 605964 transitions. [2021-01-06 19:48:22,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 19:48:22,003 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2021-01-06 19:48:22,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:48:23,013 INFO L225 Difference]: With dead ends: 435535 [2021-01-06 19:48:23,013 INFO L226 Difference]: Without dead ends: 385907 [2021-01-06 19:48:23,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-06 19:48:23,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385907 states. [2021-01-06 19:48:40,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385907 to 274890. [2021-01-06 19:48:40,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274890 states. [2021-01-06 19:48:41,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274890 states to 274890 states and 379387 transitions. [2021-01-06 19:48:41,033 INFO L78 Accepts]: Start accepts. Automaton has 274890 states and 379387 transitions. Word has length 99 [2021-01-06 19:48:41,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:48:41,033 INFO L481 AbstractCegarLoop]: Abstraction has 274890 states and 379387 transitions. [2021-01-06 19:48:41,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 19:48:41,033 INFO L276 IsEmpty]: Start isEmpty. Operand 274890 states and 379387 transitions. [2021-01-06 19:48:41,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-01-06 19:48:41,069 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:48:41,069 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:48:41,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-01-06 19:48:41,070 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:48:41,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:48:41,070 INFO L82 PathProgramCache]: Analyzing trace with hash 985246732, now seen corresponding path program 1 times [2021-01-06 19:48:41,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:48:41,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477463163] [2021-01-06 19:48:41,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:48:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:48:41,199 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 19:48:41,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477463163] [2021-01-06 19:48:41,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:48:41,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-06 19:48:41,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616652714] [2021-01-06 19:48:41,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 19:48:41,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:48:41,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 19:48:41,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:48:41,202 INFO L87 Difference]: Start difference. First operand 274890 states and 379387 transitions. Second operand 7 states. [2021-01-06 19:49:01,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:49:01,928 INFO L93 Difference]: Finished difference Result 462949 states and 642875 transitions. [2021-01-06 19:49:01,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 19:49:01,929 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2021-01-06 19:49:01,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:49:02,719 INFO L225 Difference]: With dead ends: 462949 [2021-01-06 19:49:02,720 INFO L226 Difference]: Without dead ends: 424763 [2021-01-06 19:49:02,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-06 19:49:03,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424763 states. [2021-01-06 19:49:20,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424763 to 305655. [2021-01-06 19:49:20,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305655 states. [2021-01-06 19:49:21,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305655 states to 305655 states and 421693 transitions. [2021-01-06 19:49:21,539 INFO L78 Accepts]: Start accepts. Automaton has 305655 states and 421693 transitions. Word has length 100 [2021-01-06 19:49:21,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:49:21,539 INFO L481 AbstractCegarLoop]: Abstraction has 305655 states and 421693 transitions. [2021-01-06 19:49:21,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 19:49:21,540 INFO L276 IsEmpty]: Start isEmpty. Operand 305655 states and 421693 transitions. [2021-01-06 19:49:21,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-01-06 19:49:21,599 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:49:21,599 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:49:21,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-01-06 19:49:21,599 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:49:21,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:49:21,600 INFO L82 PathProgramCache]: Analyzing trace with hash -195268636, now seen corresponding path program 1 times [2021-01-06 19:49:21,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:49:21,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443978777] [2021-01-06 19:49:21,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:49:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:49:21,696 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:49:21,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443978777] [2021-01-06 19:49:21,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:49:21,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:49:21,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466655852] [2021-01-06 19:49:21,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:49:21,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:49:21,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:49:21,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:49:21,698 INFO L87 Difference]: Start difference. First operand 305655 states and 421693 transitions. Second operand 3 states. [2021-01-06 19:49:50,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:49:50,812 INFO L93 Difference]: Finished difference Result 857644 states and 1177120 transitions. [2021-01-06 19:49:50,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:49:50,812 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2021-01-06 19:49:50,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted.