/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.4.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 19:43:59,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 19:43:59,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 19:43:59,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 19:43:59,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 19:43:59,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 19:43:59,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 19:43:59,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 19:43:59,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 19:43:59,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 19:43:59,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 19:43:59,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 19:43:59,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 19:43:59,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 19:43:59,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 19:43:59,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 19:43:59,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 19:43:59,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 19:43:59,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 19:43:59,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 19:43:59,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 19:43:59,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 19:44:00,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 19:44:00,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 19:44:00,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 19:44:00,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 19:44:00,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 19:44:00,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 19:44:00,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 19:44:00,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 19:44:00,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 19:44:00,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 19:44:00,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 19:44:00,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 19:44:00,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 19:44:00,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 19:44:00,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 19:44:00,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 19:44:00,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 19:44:00,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 19:44:00,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 19:44:00,029 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 19:44:00,071 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 19:44:00,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 19:44:00,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 19:44:00,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 19:44:00,076 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 19:44:00,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 19:44:00,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 19:44:00,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 19:44:00,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 19:44:00,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 19:44:00,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 19:44:00,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 19:44:00,078 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 19:44:00,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 19:44:00,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 19:44:00,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 19:44:00,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 19:44:00,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 19:44:00,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 19:44:00,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 19:44:00,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 19:44:00,080 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 19:44:00,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 19:44:00,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 19:44:00,081 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 19:44:00,081 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 19:44:00,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 19:44:00,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 19:44:00,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 19:44:00,532 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 19:44:00,532 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 19:44:00,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c [2021-01-06 19:44:00,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f4d209859/d009873d7abf4e729e8816513dd326ad/FLAG52eb56be3 [2021-01-06 19:44:01,292 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 19:44:01,292 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c [2021-01-06 19:44:01,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f4d209859/d009873d7abf4e729e8816513dd326ad/FLAG52eb56be3 [2021-01-06 19:44:01,598 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f4d209859/d009873d7abf4e729e8816513dd326ad [2021-01-06 19:44:01,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 19:44:01,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 19:44:01,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 19:44:01,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 19:44:01,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 19:44:01,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:44:01" (1/1) ... [2021-01-06 19:44:01,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26e41f98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:44:01, skipping insertion in model container [2021-01-06 19:44:01,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:44:01" (1/1) ... [2021-01-06 19:44:01,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 19:44:01,654 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[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in 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[~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[~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[~c1~0,] [2021-01-06 19:44:01,876 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.4.ufo.BOUNDED-8.pals.c[9392,9405] [2021-01-06 19:44:01,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:44:01,890 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[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in 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[~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[~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[~c1~0,] [2021-01-06 19:44:01,968 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.4.ufo.BOUNDED-8.pals.c[9392,9405] [2021-01-06 19:44:01,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:44:01,989 INFO L208 MainTranslator]: Completed translation [2021-01-06 19:44:01,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:44:01 WrapperNode [2021-01-06 19:44:01,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 19:44:01,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 19:44:01,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 19:44:01,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 19:44:01,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:44:01" (1/1) ... [2021-01-06 19:44:02,011 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:44:01" (1/1) ... [2021-01-06 19:44:02,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 19:44:02,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 19:44:02,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 19:44:02,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 19:44:02,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:44:01" (1/1) ... [2021-01-06 19:44:02,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:44:01" (1/1) ... [2021-01-06 19:44:02,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:44:01" (1/1) ... [2021-01-06 19:44:02,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:44:01" (1/1) ... [2021-01-06 19:44:02,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:44:01" (1/1) ... [2021-01-06 19:44:02,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:44:01" (1/1) ... [2021-01-06 19:44:02,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:44:01" (1/1) ... [2021-01-06 19:44:02,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 19:44:02,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 19:44:02,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 19:44:02,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 19:44:02,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:44:01" (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 19:44:02,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 19:44:02,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 19:44:02,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 19:44:02,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 19:44:02,933 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 19:44:02,933 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-01-06 19:44:02,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:44:02 BoogieIcfgContainer [2021-01-06 19:44:02,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 19:44:02,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 19:44:02,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 19:44:02,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 19:44:02,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 07:44:01" (1/3) ... [2021-01-06 19:44:02,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3908af3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:44:02, skipping insertion in model container [2021-01-06 19:44:02,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:44:01" (2/3) ... [2021-01-06 19:44:02,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3908af3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:44:02, skipping insertion in model container [2021-01-06 19:44:02,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:44:02" (3/3) ... [2021-01-06 19:44:02,946 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c [2021-01-06 19:44:02,953 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 19:44:02,960 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 19:44:02,982 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 19:44:03,038 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 19:44:03,039 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 19:44:03,039 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 19:44:03,040 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 19:44:03,042 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 19:44:03,042 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 19:44:03,042 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 19:44:03,042 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 19:44:03,067 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states. [2021-01-06 19:44:03,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 19:44:03,081 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:03,082 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] [2021-01-06 19:44:03,083 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:03,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:03,091 INFO L82 PathProgramCache]: Analyzing trace with hash -2019613380, now seen corresponding path program 1 times [2021-01-06 19:44:03,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:03,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885858013] [2021-01-06 19:44:03,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:03,425 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 19:44:03,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885858013] [2021-01-06 19:44:03,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:03,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 19:44:03,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892172246] [2021-01-06 19:44:03,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 19:44:03,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:03,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 19:44:03,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 19:44:03,455 INFO L87 Difference]: Start difference. First operand 100 states. Second operand 2 states. [2021-01-06 19:44:03,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:03,510 INFO L93 Difference]: Finished difference Result 171 states and 278 transitions. [2021-01-06 19:44:03,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 19:44:03,511 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2021-01-06 19:44:03,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:03,539 INFO L225 Difference]: With dead ends: 171 [2021-01-06 19:44:03,539 INFO L226 Difference]: Without dead ends: 96 [2021-01-06 19:44:03,543 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 19:44:03,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-01-06 19:44:03,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-01-06 19:44:03,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-01-06 19:44:03,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 159 transitions. [2021-01-06 19:44:03,599 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 159 transitions. Word has length 29 [2021-01-06 19:44:03,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:03,599 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 159 transitions. [2021-01-06 19:44:03,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 19:44:03,599 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 159 transitions. [2021-01-06 19:44:03,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 19:44:03,602 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:03,602 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] [2021-01-06 19:44:03,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 19:44:03,602 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:03,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:03,604 INFO L82 PathProgramCache]: Analyzing trace with hash 2141340410, now seen corresponding path program 1 times [2021-01-06 19:44:03,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:03,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465434309] [2021-01-06 19:44:03,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:03,704 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 19:44:03,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465434309] [2021-01-06 19:44:03,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:03,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:44:03,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503835988] [2021-01-06 19:44:03,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:44:03,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:03,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:44:03,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:44:03,710 INFO L87 Difference]: Start difference. First operand 96 states and 159 transitions. Second operand 5 states. [2021-01-06 19:44:03,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:03,815 INFO L93 Difference]: Finished difference Result 232 states and 373 transitions. [2021-01-06 19:44:03,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:44:03,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2021-01-06 19:44:03,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:03,819 INFO L225 Difference]: With dead ends: 232 [2021-01-06 19:44:03,819 INFO L226 Difference]: Without dead ends: 162 [2021-01-06 19:44:03,821 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 19:44:03,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-01-06 19:44:03,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 96. [2021-01-06 19:44:03,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-01-06 19:44:03,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 135 transitions. [2021-01-06 19:44:03,834 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 135 transitions. Word has length 29 [2021-01-06 19:44:03,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:03,834 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 135 transitions. [2021-01-06 19:44:03,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:44:03,834 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 135 transitions. [2021-01-06 19:44:03,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-06 19:44:03,836 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:03,837 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] [2021-01-06 19:44:03,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 19:44:03,837 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:03,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:03,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1164590349, now seen corresponding path program 1 times [2021-01-06 19:44:03,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:03,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126385403] [2021-01-06 19:44:03,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:04,025 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 19:44:04,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126385403] [2021-01-06 19:44:04,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:04,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:44:04,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249283119] [2021-01-06 19:44:04,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:44:04,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:04,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:44:04,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:44:04,029 INFO L87 Difference]: Start difference. First operand 96 states and 135 transitions. Second operand 3 states. [2021-01-06 19:44:04,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:04,055 INFO L93 Difference]: Finished difference Result 216 states and 325 transitions. [2021-01-06 19:44:04,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:44:04,056 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2021-01-06 19:44:04,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:04,058 INFO L225 Difference]: With dead ends: 216 [2021-01-06 19:44:04,058 INFO L226 Difference]: Without dead ends: 150 [2021-01-06 19:44:04,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:44:04,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-01-06 19:44:04,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2021-01-06 19:44:04,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2021-01-06 19:44:04,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 218 transitions. [2021-01-06 19:44:04,075 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 218 transitions. Word has length 52 [2021-01-06 19:44:04,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:04,076 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 218 transitions. [2021-01-06 19:44:04,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:44:04,076 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 218 transitions. [2021-01-06 19:44:04,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-06 19:44:04,078 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:04,079 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] [2021-01-06 19:44:04,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 19:44:04,079 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:04,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:04,080 INFO L82 PathProgramCache]: Analyzing trace with hash 502679627, now seen corresponding path program 1 times [2021-01-06 19:44:04,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:04,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282800733] [2021-01-06 19:44:04,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:04,204 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 19:44:04,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282800733] [2021-01-06 19:44:04,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:04,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:44:04,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318138471] [2021-01-06 19:44:04,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:44:04,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:04,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:44:04,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:44:04,209 INFO L87 Difference]: Start difference. First operand 148 states and 218 transitions. Second operand 3 states. [2021-01-06 19:44:04,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:04,248 INFO L93 Difference]: Finished difference Result 360 states and 554 transitions. [2021-01-06 19:44:04,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:44:04,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2021-01-06 19:44:04,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:04,254 INFO L225 Difference]: With dead ends: 360 [2021-01-06 19:44:04,254 INFO L226 Difference]: Without dead ends: 242 [2021-01-06 19:44:04,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:44:04,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-01-06 19:44:04,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 240. [2021-01-06 19:44:04,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2021-01-06 19:44:04,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 363 transitions. [2021-01-06 19:44:04,308 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 363 transitions. Word has length 53 [2021-01-06 19:44:04,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:04,309 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 363 transitions. [2021-01-06 19:44:04,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:44:04,311 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 363 transitions. [2021-01-06 19:44:04,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-06 19:44:04,313 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:04,313 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] [2021-01-06 19:44:04,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 19:44:04,314 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:04,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:04,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1405286019, now seen corresponding path program 1 times [2021-01-06 19:44:04,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:04,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676584256] [2021-01-06 19:44:04,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:04,453 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 19:44:04,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676584256] [2021-01-06 19:44:04,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:04,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:44:04,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930804164] [2021-01-06 19:44:04,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:44:04,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:04,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:44:04,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:44:04,456 INFO L87 Difference]: Start difference. First operand 240 states and 363 transitions. Second operand 3 states. [2021-01-06 19:44:04,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:04,487 INFO L93 Difference]: Finished difference Result 612 states and 949 transitions. [2021-01-06 19:44:04,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:44:04,488 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2021-01-06 19:44:04,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:04,491 INFO L225 Difference]: With dead ends: 612 [2021-01-06 19:44:04,491 INFO L226 Difference]: Without dead ends: 402 [2021-01-06 19:44:04,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:44:04,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-01-06 19:44:04,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 400. [2021-01-06 19:44:04,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2021-01-06 19:44:04,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 611 transitions. [2021-01-06 19:44:04,515 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 611 transitions. Word has length 54 [2021-01-06 19:44:04,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:04,515 INFO L481 AbstractCegarLoop]: Abstraction has 400 states and 611 transitions. [2021-01-06 19:44:04,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:44:04,515 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 611 transitions. [2021-01-06 19:44:04,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-01-06 19:44:04,517 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:04,517 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] [2021-01-06 19:44:04,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 19:44:04,517 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:04,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:04,518 INFO L82 PathProgramCache]: Analyzing trace with hash 417554395, now seen corresponding path program 1 times [2021-01-06 19:44:04,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:04,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163555814] [2021-01-06 19:44:04,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:04,576 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 19:44:04,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163555814] [2021-01-06 19:44:04,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:04,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:44:04,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402854732] [2021-01-06 19:44:04,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:44:04,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:04,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:44:04,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:44:04,579 INFO L87 Difference]: Start difference. First operand 400 states and 611 transitions. Second operand 3 states. [2021-01-06 19:44:04,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:04,618 INFO L93 Difference]: Finished difference Result 1044 states and 1613 transitions. [2021-01-06 19:44:04,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:44:04,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2021-01-06 19:44:04,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:04,623 INFO L225 Difference]: With dead ends: 1044 [2021-01-06 19:44:04,624 INFO L226 Difference]: Without dead ends: 674 [2021-01-06 19:44:04,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:44:04,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2021-01-06 19:44:04,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 672. [2021-01-06 19:44:04,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 672 states. [2021-01-06 19:44:04,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1023 transitions. [2021-01-06 19:44:04,656 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1023 transitions. Word has length 55 [2021-01-06 19:44:04,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:04,656 INFO L481 AbstractCegarLoop]: Abstraction has 672 states and 1023 transitions. [2021-01-06 19:44:04,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:44:04,656 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1023 transitions. [2021-01-06 19:44:04,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-06 19:44:04,657 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:04,657 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] [2021-01-06 19:44:04,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 19:44:04,658 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:04,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:04,660 INFO L82 PathProgramCache]: Analyzing trace with hash -368690669, now seen corresponding path program 1 times [2021-01-06 19:44:04,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:04,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140973811] [2021-01-06 19:44:04,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:04,877 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 19:44:04,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140973811] [2021-01-06 19:44:04,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:04,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 19:44:04,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501707194] [2021-01-06 19:44:04,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 19:44:04,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:04,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 19:44:04,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:44:04,880 INFO L87 Difference]: Start difference. First operand 672 states and 1023 transitions. Second operand 6 states. [2021-01-06 19:44:05,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:05,089 INFO L93 Difference]: Finished difference Result 2952 states and 4499 transitions. [2021-01-06 19:44:05,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:44:05,091 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2021-01-06 19:44:05,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:05,106 INFO L225 Difference]: With dead ends: 2952 [2021-01-06 19:44:05,106 INFO L226 Difference]: Without dead ends: 2310 [2021-01-06 19:44:05,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:44:05,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2021-01-06 19:44:05,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 2304. [2021-01-06 19:44:05,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2304 states. [2021-01-06 19:44:05,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2304 states to 2304 states and 3487 transitions. [2021-01-06 19:44:05,216 INFO L78 Accepts]: Start accepts. Automaton has 2304 states and 3487 transitions. Word has length 56 [2021-01-06 19:44:05,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:05,216 INFO L481 AbstractCegarLoop]: Abstraction has 2304 states and 3487 transitions. [2021-01-06 19:44:05,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 19:44:05,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2304 states and 3487 transitions. [2021-01-06 19:44:05,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-01-06 19:44:05,217 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:05,218 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] [2021-01-06 19:44:05,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 19:44:05,218 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:05,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:05,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1031908864, now seen corresponding path program 1 times [2021-01-06 19:44:05,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:05,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237950505] [2021-01-06 19:44:05,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:05,305 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 19:44:05,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237950505] [2021-01-06 19:44:05,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:05,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 19:44:05,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852795843] [2021-01-06 19:44:05,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 19:44:05,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:05,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 19:44:05,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:44:05,308 INFO L87 Difference]: Start difference. First operand 2304 states and 3487 transitions. Second operand 6 states. [2021-01-06 19:44:05,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:05,705 INFO L93 Difference]: Finished difference Result 10426 states and 15844 transitions. [2021-01-06 19:44:05,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:44:05,706 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2021-01-06 19:44:05,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:05,749 INFO L225 Difference]: With dead ends: 10426 [2021-01-06 19:44:05,750 INFO L226 Difference]: Without dead ends: 8152 [2021-01-06 19:44:05,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 19:44:05,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8152 states. [2021-01-06 19:44:06,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8152 to 4576. [2021-01-06 19:44:06,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4576 states. [2021-01-06 19:44:06,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 6815 transitions. [2021-01-06 19:44:06,082 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 6815 transitions. Word has length 57 [2021-01-06 19:44:06,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:06,082 INFO L481 AbstractCegarLoop]: Abstraction has 4576 states and 6815 transitions. [2021-01-06 19:44:06,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 19:44:06,083 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 6815 transitions. [2021-01-06 19:44:06,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-01-06 19:44:06,084 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:06,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:44:06,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 19:44:06,084 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:06,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:06,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1541080392, now seen corresponding path program 1 times [2021-01-06 19:44:06,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:06,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486273002] [2021-01-06 19:44:06,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:06,178 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 19:44:06,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486273002] [2021-01-06 19:44:06,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:06,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 19:44:06,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707987070] [2021-01-06 19:44:06,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 19:44:06,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:06,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 19:44:06,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-01-06 19:44:06,180 INFO L87 Difference]: Start difference. First operand 4576 states and 6815 transitions. Second operand 8 states. [2021-01-06 19:44:06,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:06,864 INFO L93 Difference]: Finished difference Result 9634 states and 14112 transitions. [2021-01-06 19:44:06,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 19:44:06,864 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2021-01-06 19:44:06,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:06,911 INFO L225 Difference]: With dead ends: 9634 [2021-01-06 19:44:06,911 INFO L226 Difference]: Without dead ends: 9632 [2021-01-06 19:44:06,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-01-06 19:44:06,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9632 states. [2021-01-06 19:44:07,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9632 to 4960. [2021-01-06 19:44:07,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4960 states. [2021-01-06 19:44:07,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4960 states to 4960 states and 7199 transitions. [2021-01-06 19:44:07,279 INFO L78 Accepts]: Start accepts. Automaton has 4960 states and 7199 transitions. Word has length 58 [2021-01-06 19:44:07,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:07,280 INFO L481 AbstractCegarLoop]: Abstraction has 4960 states and 7199 transitions. [2021-01-06 19:44:07,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 19:44:07,280 INFO L276 IsEmpty]: Start isEmpty. Operand 4960 states and 7199 transitions. [2021-01-06 19:44:07,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-01-06 19:44:07,281 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:07,281 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] [2021-01-06 19:44:07,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 19:44:07,281 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:07,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:07,282 INFO L82 PathProgramCache]: Analyzing trace with hash 581430488, now seen corresponding path program 1 times [2021-01-06 19:44:07,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:07,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303052191] [2021-01-06 19:44:07,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:07,355 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 19:44:07,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303052191] [2021-01-06 19:44:07,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:07,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:44:07,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33235572] [2021-01-06 19:44:07,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:44:07,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:07,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:44:07,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:44:07,358 INFO L87 Difference]: Start difference. First operand 4960 states and 7199 transitions. Second operand 3 states. [2021-01-06 19:44:07,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:07,727 INFO L93 Difference]: Finished difference Result 11966 states and 17395 transitions. [2021-01-06 19:44:07,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:44:07,727 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2021-01-06 19:44:07,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:07,758 INFO L225 Difference]: With dead ends: 11966 [2021-01-06 19:44:07,759 INFO L226 Difference]: Without dead ends: 7036 [2021-01-06 19:44:07,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:44:07,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7036 states. [2021-01-06 19:44:08,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7036 to 7034. [2021-01-06 19:44:08,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7034 states. [2021-01-06 19:44:08,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7034 states to 7034 states and 10169 transitions. [2021-01-06 19:44:08,233 INFO L78 Accepts]: Start accepts. Automaton has 7034 states and 10169 transitions. Word has length 59 [2021-01-06 19:44:08,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:08,233 INFO L481 AbstractCegarLoop]: Abstraction has 7034 states and 10169 transitions. [2021-01-06 19:44:08,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:44:08,233 INFO L276 IsEmpty]: Start isEmpty. Operand 7034 states and 10169 transitions. [2021-01-06 19:44:08,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-01-06 19:44:08,238 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:08,239 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] [2021-01-06 19:44:08,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 19:44:08,239 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:08,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:08,240 INFO L82 PathProgramCache]: Analyzing trace with hash 418253800, now seen corresponding path program 1 times [2021-01-06 19:44:08,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:08,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605308860] [2021-01-06 19:44:08,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:08,548 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:44:08,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605308860] [2021-01-06 19:44:08,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564400568] [2021-01-06 19:44:08,549 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 19:44:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:08,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-06 19:44:08,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:44:08,950 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 19:44:08,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:44:08,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 14 [2021-01-06 19:44:08,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992956555] [2021-01-06 19:44:08,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 19:44:08,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:08,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 19:44:08,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-01-06 19:44:08,952 INFO L87 Difference]: Start difference. First operand 7034 states and 10169 transitions. Second operand 14 states. [2021-01-06 19:44:16,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:16,480 INFO L93 Difference]: Finished difference Result 59660 states and 85311 transitions. [2021-01-06 19:44:16,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-01-06 19:44:16,481 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 82 [2021-01-06 19:44:16,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:16,612 INFO L225 Difference]: With dead ends: 59660 [2021-01-06 19:44:16,613 INFO L226 Difference]: Without dead ends: 52658 [2021-01-06 19:44:16,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2034 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1111, Invalid=4741, Unknown=0, NotChecked=0, Total=5852 [2021-01-06 19:44:16,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52658 states. [2021-01-06 19:44:18,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52658 to 25818. [2021-01-06 19:44:18,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25818 states. [2021-01-06 19:44:18,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25818 states to 25818 states and 36773 transitions. [2021-01-06 19:44:18,591 INFO L78 Accepts]: Start accepts. Automaton has 25818 states and 36773 transitions. Word has length 82 [2021-01-06 19:44:18,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:18,591 INFO L481 AbstractCegarLoop]: Abstraction has 25818 states and 36773 transitions. [2021-01-06 19:44:18,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 19:44:18,591 INFO L276 IsEmpty]: Start isEmpty. Operand 25818 states and 36773 transitions. [2021-01-06 19:44:18,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-01-06 19:44:18,599 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:18,599 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:44:18,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-01-06 19:44:18,813 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:18,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:18,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1918927774, now seen corresponding path program 1 times [2021-01-06 19:44:18,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:18,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575187686] [2021-01-06 19:44:18,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:18,882 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:44:18,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575187686] [2021-01-06 19:44:18,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:18,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:44:18,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740134726] [2021-01-06 19:44:18,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:44:18,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:18,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:44:18,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:44:18,886 INFO L87 Difference]: Start difference. First operand 25818 states and 36773 transitions. Second operand 3 states. [2021-01-06 19:44:20,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:20,703 INFO L93 Difference]: Finished difference Result 61578 states and 87635 transitions. [2021-01-06 19:44:20,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:44:20,706 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2021-01-06 19:44:20,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:20,785 INFO L225 Difference]: With dead ends: 61578 [2021-01-06 19:44:20,786 INFO L226 Difference]: Without dead ends: 40912 [2021-01-06 19:44:20,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:44:20,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40912 states. [2021-01-06 19:44:22,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40912 to 39254. [2021-01-06 19:44:22,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39254 states. [2021-01-06 19:44:23,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39254 states to 39254 states and 55297 transitions. [2021-01-06 19:44:23,030 INFO L78 Accepts]: Start accepts. Automaton has 39254 states and 55297 transitions. Word has length 83 [2021-01-06 19:44:23,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:23,031 INFO L481 AbstractCegarLoop]: Abstraction has 39254 states and 55297 transitions. [2021-01-06 19:44:23,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:44:23,031 INFO L276 IsEmpty]: Start isEmpty. Operand 39254 states and 55297 transitions. [2021-01-06 19:44:23,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-01-06 19:44:23,042 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:23,042 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:44:23,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 19:44:23,043 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:23,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:23,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1917030416, now seen corresponding path program 1 times [2021-01-06 19:44:23,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:23,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15911438] [2021-01-06 19:44:23,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:23,129 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-01-06 19:44:23,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15911438] [2021-01-06 19:44:23,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:23,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:44:23,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250383844] [2021-01-06 19:44:23,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 19:44:23,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:23,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 19:44:23,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:44:23,132 INFO L87 Difference]: Start difference. First operand 39254 states and 55297 transitions. Second operand 6 states. [2021-01-06 19:44:25,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:25,747 INFO L93 Difference]: Finished difference Result 96494 states and 136291 transitions. [2021-01-06 19:44:25,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:44:25,748 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2021-01-06 19:44:25,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:25,938 INFO L225 Difference]: With dead ends: 96494 [2021-01-06 19:44:25,939 INFO L226 Difference]: Without dead ends: 57279 [2021-01-06 19:44:26,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 19:44:26,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57279 states. [2021-01-06 19:44:28,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57279 to 49757. [2021-01-06 19:44:28,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49757 states. [2021-01-06 19:44:28,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49757 states to 49757 states and 69126 transitions. [2021-01-06 19:44:28,989 INFO L78 Accepts]: Start accepts. Automaton has 49757 states and 69126 transitions. Word has length 83 [2021-01-06 19:44:28,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:28,990 INFO L481 AbstractCegarLoop]: Abstraction has 49757 states and 69126 transitions. [2021-01-06 19:44:28,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 19:44:28,990 INFO L276 IsEmpty]: Start isEmpty. Operand 49757 states and 69126 transitions. [2021-01-06 19:44:29,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-01-06 19:44:29,003 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:29,003 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:44:29,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 19:44:29,003 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:29,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:29,004 INFO L82 PathProgramCache]: Analyzing trace with hash 396113720, now seen corresponding path program 1 times [2021-01-06 19:44:29,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:29,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852921399] [2021-01-06 19:44:29,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:29,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:29,053 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:44:29,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852921399] [2021-01-06 19:44:29,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:29,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:44:29,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731459548] [2021-01-06 19:44:29,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:44:29,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:29,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:44:29,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:44:29,055 INFO L87 Difference]: Start difference. First operand 49757 states and 69126 transitions. Second operand 3 states. [2021-01-06 19:44:31,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:31,994 INFO L93 Difference]: Finished difference Result 110761 states and 153968 transitions. [2021-01-06 19:44:31,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:44:31,994 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2021-01-06 19:44:31,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:32,100 INFO L225 Difference]: With dead ends: 110761 [2021-01-06 19:44:32,100 INFO L226 Difference]: Without dead ends: 65647 [2021-01-06 19:44:32,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:44:32,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65647 states. [2021-01-06 19:44:35,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65647 to 56769. [2021-01-06 19:44:35,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56769 states. [2021-01-06 19:44:35,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56769 states to 56769 states and 78114 transitions. [2021-01-06 19:44:35,286 INFO L78 Accepts]: Start accepts. Automaton has 56769 states and 78114 transitions. Word has length 83 [2021-01-06 19:44:35,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:35,287 INFO L481 AbstractCegarLoop]: Abstraction has 56769 states and 78114 transitions. [2021-01-06 19:44:35,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:44:35,287 INFO L276 IsEmpty]: Start isEmpty. Operand 56769 states and 78114 transitions. [2021-01-06 19:44:35,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-01-06 19:44:35,303 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:35,303 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:44:35,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 19:44:35,303 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:35,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:35,304 INFO L82 PathProgramCache]: Analyzing trace with hash -679069464, now seen corresponding path program 1 times [2021-01-06 19:44:35,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:35,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313875324] [2021-01-06 19:44:35,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:35,405 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 19:44:35,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313875324] [2021-01-06 19:44:35,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:35,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 19:44:35,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437697363] [2021-01-06 19:44:35,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 19:44:35,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:35,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 19:44:35,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:44:35,411 INFO L87 Difference]: Start difference. First operand 56769 states and 78114 transitions. Second operand 6 states. [2021-01-06 19:44:40,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:40,604 INFO L93 Difference]: Finished difference Result 116567 states and 161599 transitions. [2021-01-06 19:44:40,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:44:40,604 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2021-01-06 19:44:40,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:40,738 INFO L225 Difference]: With dead ends: 116567 [2021-01-06 19:44:40,738 INFO L226 Difference]: Without dead ends: 105509 [2021-01-06 19:44:40,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-01-06 19:44:41,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105509 states. [2021-01-06 19:44:44,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105509 to 67345. [2021-01-06 19:44:44,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67345 states. [2021-01-06 19:44:44,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67345 states to 67345 states and 92546 transitions. [2021-01-06 19:44:44,389 INFO L78 Accepts]: Start accepts. Automaton has 67345 states and 92546 transitions. Word has length 83 [2021-01-06 19:44:44,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:44,389 INFO L481 AbstractCegarLoop]: Abstraction has 67345 states and 92546 transitions. [2021-01-06 19:44:44,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 19:44:44,389 INFO L276 IsEmpty]: Start isEmpty. Operand 67345 states and 92546 transitions. [2021-01-06 19:44:44,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-01-06 19:44:44,403 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:44,404 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:44:44,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-06 19:44:44,404 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:44,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:44,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1106415528, now seen corresponding path program 1 times [2021-01-06 19:44:44,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:44,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248938407] [2021-01-06 19:44:44,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:44,452 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:44:44,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248938407] [2021-01-06 19:44:44,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:44,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:44:44,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724667181] [2021-01-06 19:44:44,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:44:44,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:44,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:44:44,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:44:44,454 INFO L87 Difference]: Start difference. First operand 67345 states and 92546 transitions. Second operand 3 states. [2021-01-06 19:44:49,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:49,147 INFO L93 Difference]: Finished difference Result 155405 states and 212137 transitions. [2021-01-06 19:44:49,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:44:49,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2021-01-06 19:44:49,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:49,293 INFO L225 Difference]: With dead ends: 155405 [2021-01-06 19:44:49,293 INFO L226 Difference]: Without dead ends: 102715 [2021-01-06 19:44:49,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:44:49,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102715 states. [2021-01-06 19:44:54,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102715 to 98709. [2021-01-06 19:44:54,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98709 states. [2021-01-06 19:44:54,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98709 states to 98709 states and 133335 transitions. [2021-01-06 19:44:54,513 INFO L78 Accepts]: Start accepts. Automaton has 98709 states and 133335 transitions. Word has length 83 [2021-01-06 19:44:54,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:54,514 INFO L481 AbstractCegarLoop]: Abstraction has 98709 states and 133335 transitions. [2021-01-06 19:44:54,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:44:54,514 INFO L276 IsEmpty]: Start isEmpty. Operand 98709 states and 133335 transitions. [2021-01-06 19:44:54,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-01-06 19:44:54,530 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:54,530 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:44:54,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-06 19:44:54,530 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:54,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:54,531 INFO L82 PathProgramCache]: Analyzing trace with hash 576343346, now seen corresponding path program 1 times [2021-01-06 19:44:54,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:54,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385955237] [2021-01-06 19:44:54,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:54,647 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-06 19:44:54,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385955237] [2021-01-06 19:44:54,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:54,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 19:44:54,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044861039] [2021-01-06 19:44:54,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 19:44:54,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:54,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 19:44:54,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:44:54,650 INFO L87 Difference]: Start difference. First operand 98709 states and 133335 transitions. Second operand 6 states. [2021-01-06 19:45:02,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:45:02,741 INFO L93 Difference]: Finished difference Result 204929 states and 279286 transitions. [2021-01-06 19:45:02,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:45:02,742 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2021-01-06 19:45:02,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:45:03,110 INFO L225 Difference]: With dead ends: 204929 [2021-01-06 19:45:03,111 INFO L226 Difference]: Without dead ends: 173343 [2021-01-06 19:45:03,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-01-06 19:45:03,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173343 states. [2021-01-06 19:45:10,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173343 to 128853. [2021-01-06 19:45:10,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128853 states. [2021-01-06 19:45:10,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128853 states to 128853 states and 173895 transitions. [2021-01-06 19:45:10,452 INFO L78 Accepts]: Start accepts. Automaton has 128853 states and 173895 transitions. Word has length 83 [2021-01-06 19:45:10,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:45:10,452 INFO L481 AbstractCegarLoop]: Abstraction has 128853 states and 173895 transitions. [2021-01-06 19:45:10,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 19:45:10,452 INFO L276 IsEmpty]: Start isEmpty. Operand 128853 states and 173895 transitions. [2021-01-06 19:45:10,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-01-06 19:45:10,465 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:45:10,465 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:45:10,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-06 19:45:10,466 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:45:10,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:45:10,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1007327224, now seen corresponding path program 1 times [2021-01-06 19:45:10,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:45:10,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451891624] [2021-01-06 19:45:10,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:45:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:45:10,806 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 19:45:10,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451891624] [2021-01-06 19:45:10,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:45:10,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 19:45:10,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637149654] [2021-01-06 19:45:10,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 19:45:10,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:45:10,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 19:45:10,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:45:10,817 INFO L87 Difference]: Start difference. First operand 128853 states and 173895 transitions. Second operand 6 states. [2021-01-06 19:45:20,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:45:20,677 INFO L93 Difference]: Finished difference Result 240865 states and 327962 transitions. [2021-01-06 19:45:20,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:45:20,677 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2021-01-06 19:45:20,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:45:20,995 INFO L225 Difference]: With dead ends: 240865 [2021-01-06 19:45:20,995 INFO L226 Difference]: Without dead ends: 203247 [2021-01-06 19:45:21,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 19:45:21,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203247 states. [2021-01-06 19:45:29,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203247 to 157535. [2021-01-06 19:45:29,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157535 states. [2021-01-06 19:45:29,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157535 states to 157535 states and 212841 transitions. [2021-01-06 19:45:29,966 INFO L78 Accepts]: Start accepts. Automaton has 157535 states and 212841 transitions. Word has length 83 [2021-01-06 19:45:29,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:45:29,966 INFO L481 AbstractCegarLoop]: Abstraction has 157535 states and 212841 transitions. [2021-01-06 19:45:29,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 19:45:29,966 INFO L276 IsEmpty]: Start isEmpty. Operand 157535 states and 212841 transitions. [2021-01-06 19:45:29,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-01-06 19:45:29,981 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:45:29,981 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:45:29,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-01-06 19:45:29,981 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:45:29,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:45:29,982 INFO L82 PathProgramCache]: Analyzing trace with hash -548102794, now seen corresponding path program 1 times [2021-01-06 19:45:29,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:45:29,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685718803] [2021-01-06 19:45:29,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:45:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:45:30,361 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 19:45:30,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685718803] [2021-01-06 19:45:30,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:45:30,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 19:45:30,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495751205] [2021-01-06 19:45:30,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 19:45:30,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:45:30,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 19:45:30,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:45:30,365 INFO L87 Difference]: Start difference. First operand 157535 states and 212841 transitions. Second operand 6 states. [2021-01-06 19:45:41,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:45:41,464 INFO L93 Difference]: Finished difference Result 249853 states and 339938 transitions. [2021-01-06 19:45:41,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:45:41,465 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2021-01-06 19:45:41,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:45:41,926 INFO L225 Difference]: With dead ends: 249853 [2021-01-06 19:45:41,927 INFO L226 Difference]: Without dead ends: 226067 [2021-01-06 19:45:41,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 19:45:42,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226067 states. [2021-01-06 19:45:51,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226067 to 174245. [2021-01-06 19:45:51,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174245 states. [2021-01-06 19:45:52,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174245 states to 174245 states and 235679 transitions. [2021-01-06 19:45:52,221 INFO L78 Accepts]: Start accepts. Automaton has 174245 states and 235679 transitions. Word has length 84 [2021-01-06 19:45:52,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:45:52,222 INFO L481 AbstractCegarLoop]: Abstraction has 174245 states and 235679 transitions. [2021-01-06 19:45:52,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 19:45:52,222 INFO L276 IsEmpty]: Start isEmpty. Operand 174245 states and 235679 transitions. [2021-01-06 19:45:52,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-06 19:45:52,239 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:45:52,239 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:45:52,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-01-06 19:45:52,240 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:45:52,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:45:52,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1864221152, now seen corresponding path program 1 times [2021-01-06 19:45:52,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:45:52,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509113880] [2021-01-06 19:45:52,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:45:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:45:52,591 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:45:52,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509113880] [2021-01-06 19:45:52,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:45:52,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:45:52,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689096009] [2021-01-06 19:45:52,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:45:52,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:45:52,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:45:52,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:45:52,601 INFO L87 Difference]: Start difference. First operand 174245 states and 235679 transitions. Second operand 3 states. [2021-01-06 19:46:03,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:03,283 INFO L93 Difference]: Finished difference Result 304033 states and 408358 transitions. [2021-01-06 19:46:03,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:46:03,283 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2021-01-06 19:46:03,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:03,715 INFO L225 Difference]: With dead ends: 304033 [2021-01-06 19:46:03,715 INFO L226 Difference]: Without dead ends: 180070 [2021-01-06 19:46:03,796 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 19:46:03,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180070 states. [2021-01-06 19:46:13,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180070 to 173796. [2021-01-06 19:46:13,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173796 states. [2021-01-06 19:46:14,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173796 states to 173796 states and 231519 transitions. [2021-01-06 19:46:14,428 INFO L78 Accepts]: Start accepts. Automaton has 173796 states and 231519 transitions. Word has length 86 [2021-01-06 19:46:14,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:14,429 INFO L481 AbstractCegarLoop]: Abstraction has 173796 states and 231519 transitions. [2021-01-06 19:46:14,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:46:14,430 INFO L276 IsEmpty]: Start isEmpty. Operand 173796 states and 231519 transitions. [2021-01-06 19:46:14,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-01-06 19:46:14,446 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:14,446 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:46:14,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-01-06 19:46:14,446 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:14,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:14,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1600764967, now seen corresponding path program 1 times [2021-01-06 19:46:14,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:14,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419902238] [2021-01-06 19:46:14,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:14,530 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:14,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419902238] [2021-01-06 19:46:14,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247736880] [2021-01-06 19:46:14,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:46:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:14,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 19:46:14,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:46:14,831 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:14,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:46:14,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-01-06 19:46:14,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210958868] [2021-01-06 19:46:14,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 19:46:14,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:14,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 19:46:14,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-01-06 19:46:14,833 INFO L87 Difference]: Start difference. First operand 173796 states and 231519 transitions. Second operand 11 states.