/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_floodmax.3.3.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 19:36:30,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 19:36:30,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 19:36:30,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 19:36:30,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 19:36:30,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 19:36:30,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 19:36:30,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 19:36:30,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 19:36:30,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 19:36:30,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 19:36:30,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 19:36:30,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 19:36:30,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 19:36:30,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 19:36:30,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 19:36:30,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 19:36:30,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 19:36:30,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 19:36:30,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 19:36:30,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 19:36:30,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 19:36:30,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 19:36:30,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 19:36:30,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 19:36:30,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 19:36:30,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 19:36:30,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 19:36:30,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 19:36:30,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 19:36:30,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 19:36:30,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 19:36:30,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 19:36:30,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 19:36:30,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 19:36:30,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 19:36:30,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 19:36:30,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 19:36:30,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 19:36:30,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 19:36:30,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 19:36:30,893 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 19:36:30,955 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 19:36:30,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 19:36:30,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 19:36:30,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 19:36:30,963 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 19:36:30,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 19:36:30,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 19:36:30,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 19:36:30,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 19:36:30,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 19:36:30,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 19:36:30,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 19:36:30,965 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 19:36:30,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 19:36:30,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 19:36:30,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 19:36:30,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 19:36:30,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 19:36:30,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 19:36:30,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 19:36:30,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 19:36:30,967 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 19:36:30,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 19:36:30,967 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 19:36:30,967 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 19:36:30,968 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 19:36:31,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 19:36:31,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 19:36:31,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 19:36:31,428 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 19:36:31,429 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 19:36:31,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c [2021-01-06 19:36:31,509 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a63638b00/2e0e1a421b544c1bb5d5e7073c1d65aa/FLAG02edad12c [2021-01-06 19:36:32,138 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 19:36:32,139 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c [2021-01-06 19:36:32,159 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a63638b00/2e0e1a421b544c1bb5d5e7073c1d65aa/FLAG02edad12c [2021-01-06 19:36:32,476 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a63638b00/2e0e1a421b544c1bb5d5e7073c1d65aa [2021-01-06 19:36:32,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 19:36:32,483 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 19:36:32,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 19:36:32,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 19:36:32,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 19:36:32,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:36:32" (1/1) ... [2021-01-06 19:36:32,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@86c1f27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:36:32, skipping insertion in model container [2021-01-06 19:36:32,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:36:32" (1/1) ... [2021-01-06 19:36:32,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 19:36:32,538 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r121~0,] left hand side expression in assignment: lhs: VariableLHS[~r131~0,] left hand side expression in assignment: lhs: VariableLHS[~r211~0,] left hand side expression in assignment: lhs: VariableLHS[~r231~0,] left hand side expression in assignment: lhs: VariableLHS[~r311~0,] left hand side expression in assignment: lhs: VariableLHS[~r321~0,] 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[~r122~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~r132~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~r212~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~r232~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~r312~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~r322~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~ep12~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep13~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep21~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep23~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep31~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep32~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2021-01-06 19:36:32,803 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_floodmax.3.3.ufo.UNBOUNDED.pals.c[12968,12981] [2021-01-06 19:36:32,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:36:32,819 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r121~0,] left hand side expression in assignment: lhs: VariableLHS[~r131~0,] left hand side expression in assignment: lhs: VariableLHS[~r211~0,] left hand side expression in assignment: lhs: VariableLHS[~r231~0,] left hand side expression in assignment: lhs: VariableLHS[~r311~0,] left hand side expression in assignment: lhs: VariableLHS[~r321~0,] 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[~r122~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~r132~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~r212~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~r232~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~r312~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~r322~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~ep12~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep13~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep21~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep23~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep31~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep32~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2021-01-06 19:36:32,983 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_floodmax.3.3.ufo.UNBOUNDED.pals.c[12968,12981] [2021-01-06 19:36:32,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:36:33,010 INFO L208 MainTranslator]: Completed translation [2021-01-06 19:36:33,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:36:33 WrapperNode [2021-01-06 19:36:33,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 19:36:33,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 19:36:33,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 19:36:33,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 19:36:33,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:36:33" (1/1) ... [2021-01-06 19:36:33,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:36:33" (1/1) ... [2021-01-06 19:36:33,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 19:36:33,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 19:36:33,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 19:36:33,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 19:36:33,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:36:33" (1/1) ... [2021-01-06 19:36:33,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:36:33" (1/1) ... [2021-01-06 19:36:33,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:36:33" (1/1) ... [2021-01-06 19:36:33,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:36:33" (1/1) ... [2021-01-06 19:36:33,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:36:33" (1/1) ... [2021-01-06 19:36:33,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:36:33" (1/1) ... [2021-01-06 19:36:33,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:36:33" (1/1) ... [2021-01-06 19:36:33,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 19:36:33,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 19:36:33,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 19:36:33,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 19:36:33,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:36:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 19:36:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 19:36:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 19:36:33,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 19:36:33,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 19:36:34,371 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 19:36:34,372 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-01-06 19:36:34,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:36:34 BoogieIcfgContainer [2021-01-06 19:36:34,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 19:36:34,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 19:36:34,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 19:36:34,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 19:36:34,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 07:36:32" (1/3) ... [2021-01-06 19:36:34,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435c6808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:36:34, skipping insertion in model container [2021-01-06 19:36:34,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:36:33" (2/3) ... [2021-01-06 19:36:34,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435c6808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:36:34, skipping insertion in model container [2021-01-06 19:36:34,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:36:34" (3/3) ... [2021-01-06 19:36:34,384 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.UNBOUNDED.pals.c [2021-01-06 19:36:34,390 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 19:36:34,396 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 19:36:34,416 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 19:36:34,446 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 19:36:34,446 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 19:36:34,446 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 19:36:34,447 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 19:36:34,447 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 19:36:34,447 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 19:36:34,447 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 19:36:34,447 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 19:36:34,467 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states. [2021-01-06 19:36:34,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 19:36:34,477 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:36:34,478 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] [2021-01-06 19:36:34,478 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:36:34,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:36:34,485 INFO L82 PathProgramCache]: Analyzing trace with hash 298975739, now seen corresponding path program 1 times [2021-01-06 19:36:34,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:36:34,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508247036] [2021-01-06 19:36:34,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:36:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:36:34,768 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 19:36:34,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508247036] [2021-01-06 19:36:34,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:36:34,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 19:36:34,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301034391] [2021-01-06 19:36:34,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 19:36:34,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:36:34,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 19:36:34,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 19:36:34,807 INFO L87 Difference]: Start difference. First operand 136 states. Second operand 2 states. [2021-01-06 19:36:34,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:36:34,858 INFO L93 Difference]: Finished difference Result 212 states and 365 transitions. [2021-01-06 19:36:34,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 19:36:34,860 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2021-01-06 19:36:34,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:36:34,874 INFO L225 Difference]: With dead ends: 212 [2021-01-06 19:36:34,874 INFO L226 Difference]: Without dead ends: 132 [2021-01-06 19:36:34,878 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 19:36:34,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-01-06 19:36:34,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-01-06 19:36:34,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2021-01-06 19:36:34,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 228 transitions. [2021-01-06 19:36:34,931 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 228 transitions. Word has length 37 [2021-01-06 19:36:34,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:36:34,931 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 228 transitions. [2021-01-06 19:36:34,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 19:36:34,932 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 228 transitions. [2021-01-06 19:36:34,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-06 19:36:34,934 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:36:34,935 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] [2021-01-06 19:36:34,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 19:36:34,935 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:36:34,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:36:34,936 INFO L82 PathProgramCache]: Analyzing trace with hash -518672711, now seen corresponding path program 1 times [2021-01-06 19:36:34,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:36:34,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973261233] [2021-01-06 19:36:34,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:36:35,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:36:35,182 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 19:36:35,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973261233] [2021-01-06 19:36:35,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:36:35,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:36:35,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606147292] [2021-01-06 19:36:35,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:36:35,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:36:35,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:36:35,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:36:35,188 INFO L87 Difference]: Start difference. First operand 132 states and 228 transitions. Second operand 5 states. [2021-01-06 19:36:35,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:36:35,367 INFO L93 Difference]: Finished difference Result 211 states and 358 transitions. [2021-01-06 19:36:35,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 19:36:35,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2021-01-06 19:36:35,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:36:35,376 INFO L225 Difference]: With dead ends: 211 [2021-01-06 19:36:35,376 INFO L226 Difference]: Without dead ends: 132 [2021-01-06 19:36:35,379 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 19:36:35,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-01-06 19:36:35,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-01-06 19:36:35,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2021-01-06 19:36:35,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 201 transitions. [2021-01-06 19:36:35,406 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 201 transitions. Word has length 37 [2021-01-06 19:36:35,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:36:35,407 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 201 transitions. [2021-01-06 19:36:35,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:36:35,408 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 201 transitions. [2021-01-06 19:36:35,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-01-06 19:36:35,415 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:36:35,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:36:35,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 19:36:35,417 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:36:35,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:36:35,420 INFO L82 PathProgramCache]: Analyzing trace with hash -707453694, now seen corresponding path program 1 times [2021-01-06 19:36:35,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:36:35,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413307373] [2021-01-06 19:36:35,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:36:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:36:35,608 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 19:36:35,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413307373] [2021-01-06 19:36:35,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:36:35,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:36:35,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702928400] [2021-01-06 19:36:35,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:36:35,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:36:35,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:36:35,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:36:35,612 INFO L87 Difference]: Start difference. First operand 132 states and 201 transitions. Second operand 3 states. [2021-01-06 19:36:35,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:36:35,709 INFO L93 Difference]: Finished difference Result 273 states and 436 transitions. [2021-01-06 19:36:35,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:36:35,710 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2021-01-06 19:36:35,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:36:35,712 INFO L225 Difference]: With dead ends: 273 [2021-01-06 19:36:35,712 INFO L226 Difference]: Without dead ends: 198 [2021-01-06 19:36:35,713 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 19:36:35,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-01-06 19:36:35,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 195. [2021-01-06 19:36:35,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2021-01-06 19:36:35,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 302 transitions. [2021-01-06 19:36:35,729 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 302 transitions. Word has length 63 [2021-01-06 19:36:35,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:36:35,729 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 302 transitions. [2021-01-06 19:36:35,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:36:35,730 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 302 transitions. [2021-01-06 19:36:35,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-01-06 19:36:35,732 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:36:35,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:36:35,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 19:36:35,732 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:36:35,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:36:35,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1995563601, now seen corresponding path program 1 times [2021-01-06 19:36:35,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:36:35,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602246564] [2021-01-06 19:36:35,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:36:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:36:35,826 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 19:36:35,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602246564] [2021-01-06 19:36:35,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:36:35,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:36:35,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776865246] [2021-01-06 19:36:35,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:36:35,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:36:35,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:36:35,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:36:35,830 INFO L87 Difference]: Start difference. First operand 195 states and 302 transitions. Second operand 3 states. [2021-01-06 19:36:35,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:36:35,879 INFO L93 Difference]: Finished difference Result 457 states and 730 transitions. [2021-01-06 19:36:35,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:36:35,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2021-01-06 19:36:35,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:36:35,883 INFO L225 Difference]: With dead ends: 457 [2021-01-06 19:36:35,883 INFO L226 Difference]: Without dead ends: 319 [2021-01-06 19:36:35,884 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 19:36:35,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-01-06 19:36:35,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 315. [2021-01-06 19:36:35,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2021-01-06 19:36:35,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 496 transitions. [2021-01-06 19:36:35,906 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 496 transitions. Word has length 65 [2021-01-06 19:36:35,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:36:35,907 INFO L481 AbstractCegarLoop]: Abstraction has 315 states and 496 transitions. [2021-01-06 19:36:35,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:36:35,907 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 496 transitions. [2021-01-06 19:36:35,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 19:36:35,908 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:36:35,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:36:35,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 19:36:35,909 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:36:35,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:36:35,910 INFO L82 PathProgramCache]: Analyzing trace with hash -2137075392, now seen corresponding path program 1 times [2021-01-06 19:36:35,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:36:35,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13975573] [2021-01-06 19:36:35,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:36:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:36:36,002 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 19:36:36,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13975573] [2021-01-06 19:36:36,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:36:36,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:36:36,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085357434] [2021-01-06 19:36:36,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:36:36,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:36:36,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:36:36,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:36:36,005 INFO L87 Difference]: Start difference. First operand 315 states and 496 transitions. Second operand 3 states. [2021-01-06 19:36:36,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:36:36,060 INFO L93 Difference]: Finished difference Result 803 states and 1286 transitions. [2021-01-06 19:36:36,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:36:36,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2021-01-06 19:36:36,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:36:36,064 INFO L225 Difference]: With dead ends: 803 [2021-01-06 19:36:36,065 INFO L226 Difference]: Without dead ends: 545 [2021-01-06 19:36:36,066 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 19:36:36,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-01-06 19:36:36,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 539. [2021-01-06 19:36:36,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2021-01-06 19:36:36,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 852 transitions. [2021-01-06 19:36:36,091 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 852 transitions. Word has length 67 [2021-01-06 19:36:36,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:36:36,091 INFO L481 AbstractCegarLoop]: Abstraction has 539 states and 852 transitions. [2021-01-06 19:36:36,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:36:36,092 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 852 transitions. [2021-01-06 19:36:36,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-01-06 19:36:36,093 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:36:36,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:36:36,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 19:36:36,093 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:36:36,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:36:36,094 INFO L82 PathProgramCache]: Analyzing trace with hash -544230961, now seen corresponding path program 1 times [2021-01-06 19:36:36,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:36:36,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077410374] [2021-01-06 19:36:36,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:36:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:36:36,237 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 19:36:36,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077410374] [2021-01-06 19:36:36,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:36:36,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:36:36,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607053342] [2021-01-06 19:36:36,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:36:36,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:36:36,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:36:36,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:36:36,240 INFO L87 Difference]: Start difference. First operand 539 states and 852 transitions. Second operand 5 states. [2021-01-06 19:36:36,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:36:36,547 INFO L93 Difference]: Finished difference Result 2303 states and 3746 transitions. [2021-01-06 19:36:36,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 19:36:36,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2021-01-06 19:36:36,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:36:36,558 INFO L225 Difference]: With dead ends: 2303 [2021-01-06 19:36:36,559 INFO L226 Difference]: Without dead ends: 1821 [2021-01-06 19:36:36,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:36:36,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2021-01-06 19:36:36,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 960. [2021-01-06 19:36:36,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2021-01-06 19:36:36,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1532 transitions. [2021-01-06 19:36:36,606 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1532 transitions. Word has length 69 [2021-01-06 19:36:36,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:36:36,606 INFO L481 AbstractCegarLoop]: Abstraction has 960 states and 1532 transitions. [2021-01-06 19:36:36,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:36:36,607 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1532 transitions. [2021-01-06 19:36:36,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-01-06 19:36:36,608 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:36:36,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:36:36,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 19:36:36,609 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:36:36,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:36:36,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1614123231, now seen corresponding path program 1 times [2021-01-06 19:36:36,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:36:36,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996869714] [2021-01-06 19:36:36,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:36:36,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:36:36,681 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 19:36:36,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996869714] [2021-01-06 19:36:36,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:36:36,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:36:36,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129264491] [2021-01-06 19:36:36,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:36:36,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:36:36,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:36:36,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:36:36,684 INFO L87 Difference]: Start difference. First operand 960 states and 1532 transitions. Second operand 4 states. [2021-01-06 19:36:36,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:36:36,866 INFO L93 Difference]: Finished difference Result 2793 states and 4533 transitions. [2021-01-06 19:36:36,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:36:36,867 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2021-01-06 19:36:36,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:36:36,878 INFO L225 Difference]: With dead ends: 2793 [2021-01-06 19:36:36,878 INFO L226 Difference]: Without dead ends: 1890 [2021-01-06 19:36:36,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:36:36,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2021-01-06 19:36:36,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1416. [2021-01-06 19:36:36,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1416 states. [2021-01-06 19:36:36,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 2275 transitions. [2021-01-06 19:36:36,944 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 2275 transitions. Word has length 70 [2021-01-06 19:36:36,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:36:36,945 INFO L481 AbstractCegarLoop]: Abstraction has 1416 states and 2275 transitions. [2021-01-06 19:36:36,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:36:36,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 2275 transitions. [2021-01-06 19:36:36,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-06 19:36:36,947 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:36:36,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:36:36,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 19:36:36,948 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:36:36,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:36:36,948 INFO L82 PathProgramCache]: Analyzing trace with hash -252040890, now seen corresponding path program 1 times [2021-01-06 19:36:36,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:36:36,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924748820] [2021-01-06 19:36:36,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:36:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:36:37,062 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 19:36:37,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924748820] [2021-01-06 19:36:37,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:36:37,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:36:37,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334152015] [2021-01-06 19:36:37,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:36:37,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:36:37,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:36:37,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:36:37,065 INFO L87 Difference]: Start difference. First operand 1416 states and 2275 transitions. Second operand 4 states. [2021-01-06 19:36:37,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:36:37,271 INFO L93 Difference]: Finished difference Result 4216 states and 6836 transitions. [2021-01-06 19:36:37,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:36:37,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2021-01-06 19:36:37,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:36:37,288 INFO L225 Difference]: With dead ends: 4216 [2021-01-06 19:36:37,288 INFO L226 Difference]: Without dead ends: 2857 [2021-01-06 19:36:37,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:36:37,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2021-01-06 19:36:37,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2067. [2021-01-06 19:36:37,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2067 states. [2021-01-06 19:36:37,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 3322 transitions. [2021-01-06 19:36:37,393 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 3322 transitions. Word has length 71 [2021-01-06 19:36:37,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:36:37,394 INFO L481 AbstractCegarLoop]: Abstraction has 2067 states and 3322 transitions. [2021-01-06 19:36:37,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:36:37,394 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 3322 transitions. [2021-01-06 19:36:37,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-06 19:36:37,404 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:36:37,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:36:37,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 19:36:37,404 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:36:37,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:36:37,405 INFO L82 PathProgramCache]: Analyzing trace with hash -630566449, now seen corresponding path program 1 times [2021-01-06 19:36:37,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:36:37,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258824583] [2021-01-06 19:36:37,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:36:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:36:37,501 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 19:36:37,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258824583] [2021-01-06 19:36:37,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:36:37,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:36:37,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861730949] [2021-01-06 19:36:37,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:36:37,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:36:37,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:36:37,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:36:37,511 INFO L87 Difference]: Start difference. First operand 2067 states and 3322 transitions. Second operand 3 states. [2021-01-06 19:36:37,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:36:37,643 INFO L93 Difference]: Finished difference Result 4274 states and 6880 transitions. [2021-01-06 19:36:37,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:36:37,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2021-01-06 19:36:37,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:36:37,660 INFO L225 Difference]: With dead ends: 4274 [2021-01-06 19:36:37,661 INFO L226 Difference]: Without dead ends: 3076 [2021-01-06 19:36:37,666 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 19:36:37,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2021-01-06 19:36:37,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 3074. [2021-01-06 19:36:37,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3074 states. [2021-01-06 19:36:37,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3074 states to 3074 states and 4900 transitions. [2021-01-06 19:36:37,859 INFO L78 Accepts]: Start accepts. Automaton has 3074 states and 4900 transitions. Word has length 72 [2021-01-06 19:36:37,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:36:37,860 INFO L481 AbstractCegarLoop]: Abstraction has 3074 states and 4900 transitions. [2021-01-06 19:36:37,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:36:37,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3074 states and 4900 transitions. [2021-01-06 19:36:37,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-06 19:36:37,864 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:36:37,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:36:37,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 19:36:37,864 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:36:37,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:36:37,865 INFO L82 PathProgramCache]: Analyzing trace with hash -808156936, now seen corresponding path program 1 times [2021-01-06 19:36:37,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:36:37,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552550782] [2021-01-06 19:36:37,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:36:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:36:37,939 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 19:36:37,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552550782] [2021-01-06 19:36:37,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:36:37,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:36:37,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698977416] [2021-01-06 19:36:37,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:36:37,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:36:37,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:36:37,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:36:37,942 INFO L87 Difference]: Start difference. First operand 3074 states and 4900 transitions. Second operand 4 states. [2021-01-06 19:36:38,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:36:38,286 INFO L93 Difference]: Finished difference Result 9240 states and 14853 transitions. [2021-01-06 19:36:38,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:36:38,288 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2021-01-06 19:36:38,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:36:38,322 INFO L225 Difference]: With dead ends: 9240 [2021-01-06 19:36:38,323 INFO L226 Difference]: Without dead ends: 6354 [2021-01-06 19:36:38,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:36:38,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6354 states. [2021-01-06 19:36:38,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6354 to 4698. [2021-01-06 19:36:38,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4698 states. [2021-01-06 19:36:38,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4698 states to 4698 states and 7486 transitions. [2021-01-06 19:36:38,626 INFO L78 Accepts]: Start accepts. Automaton has 4698 states and 7486 transitions. Word has length 72 [2021-01-06 19:36:38,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:36:38,626 INFO L481 AbstractCegarLoop]: Abstraction has 4698 states and 7486 transitions. [2021-01-06 19:36:38,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:36:38,627 INFO L276 IsEmpty]: Start isEmpty. Operand 4698 states and 7486 transitions. [2021-01-06 19:36:38,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-06 19:36:38,628 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:36:38,629 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:36:38,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 19:36:38,629 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:36:38,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:36:38,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1968035874, now seen corresponding path program 1 times [2021-01-06 19:36:38,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:36:38,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376835793] [2021-01-06 19:36:38,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:36:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:36:38,690 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 19:36:38,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376835793] [2021-01-06 19:36:38,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:36:38,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:36:38,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738384886] [2021-01-06 19:36:38,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:36:38,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:36:38,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:36:38,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:36:38,693 INFO L87 Difference]: Start difference. First operand 4698 states and 7486 transitions. Second operand 3 states. [2021-01-06 19:36:38,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:36:38,968 INFO L93 Difference]: Finished difference Result 10286 states and 16464 transitions. [2021-01-06 19:36:38,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:36:38,969 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2021-01-06 19:36:38,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:36:39,028 INFO L225 Difference]: With dead ends: 10286 [2021-01-06 19:36:39,029 INFO L226 Difference]: Without dead ends: 6983 [2021-01-06 19:36:39,037 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 19:36:39,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6983 states. [2021-01-06 19:36:39,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6983 to 6981. [2021-01-06 19:36:39,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6981 states. [2021-01-06 19:36:39,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6981 states to 6981 states and 11071 transitions. [2021-01-06 19:36:39,417 INFO L78 Accepts]: Start accepts. Automaton has 6981 states and 11071 transitions. Word has length 72 [2021-01-06 19:36:39,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:36:39,418 INFO L481 AbstractCegarLoop]: Abstraction has 6981 states and 11071 transitions. [2021-01-06 19:36:39,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:36:39,418 INFO L276 IsEmpty]: Start isEmpty. Operand 6981 states and 11071 transitions. [2021-01-06 19:36:39,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-06 19:36:39,419 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:36:39,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:36:39,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 19:36:39,419 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:36:39,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:36:39,420 INFO L82 PathProgramCache]: Analyzing trace with hash 134390635, now seen corresponding path program 1 times [2021-01-06 19:36:39,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:36:39,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505736530] [2021-01-06 19:36:39,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:36:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:36:39,472 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 19:36:39,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505736530] [2021-01-06 19:36:39,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:36:39,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:36:39,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610611303] [2021-01-06 19:36:39,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:36:39,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:36:39,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:36:39,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:36:39,475 INFO L87 Difference]: Start difference. First operand 6981 states and 11071 transitions. Second operand 3 states. [2021-01-06 19:36:39,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:36:39,902 INFO L93 Difference]: Finished difference Result 15555 states and 24952 transitions. [2021-01-06 19:36:39,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:36:39,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2021-01-06 19:36:39,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:36:39,928 INFO L225 Difference]: With dead ends: 15555 [2021-01-06 19:36:39,928 INFO L226 Difference]: Without dead ends: 10468 [2021-01-06 19:36:39,938 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 19:36:39,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10468 states. [2021-01-06 19:36:40,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10468 to 10466. [2021-01-06 19:36:40,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10466 states. [2021-01-06 19:36:40,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10466 states to 10466 states and 16575 transitions. [2021-01-06 19:36:40,523 INFO L78 Accepts]: Start accepts. Automaton has 10466 states and 16575 transitions. Word has length 72 [2021-01-06 19:36:40,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:36:40,524 INFO L481 AbstractCegarLoop]: Abstraction has 10466 states and 16575 transitions. [2021-01-06 19:36:40,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:36:40,524 INFO L276 IsEmpty]: Start isEmpty. Operand 10466 states and 16575 transitions. [2021-01-06 19:36:40,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-06 19:36:40,525 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:36:40,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:36:40,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 19:36:40,526 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:36:40,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:36:40,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1377255792, now seen corresponding path program 1 times [2021-01-06 19:36:40,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:36:40,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586816071] [2021-01-06 19:36:40,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:36:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:36:40,706 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 19:36:40,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586816071] [2021-01-06 19:36:40,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:36:40,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:36:40,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592395430] [2021-01-06 19:36:40,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:36:40,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:36:40,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:36:40,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:36:40,709 INFO L87 Difference]: Start difference. First operand 10466 states and 16575 transitions. Second operand 4 states. [2021-01-06 19:36:41,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:36:41,687 INFO L93 Difference]: Finished difference Result 31026 states and 49119 transitions. [2021-01-06 19:36:41,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:36:41,688 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2021-01-06 19:36:41,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:36:41,740 INFO L225 Difference]: With dead ends: 31026 [2021-01-06 19:36:41,740 INFO L226 Difference]: Without dead ends: 20569 [2021-01-06 19:36:41,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:36:41,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20569 states. [2021-01-06 19:36:42,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20569 to 20567. [2021-01-06 19:36:42,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20567 states. [2021-01-06 19:36:42,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20567 states to 20567 states and 32332 transitions. [2021-01-06 19:36:42,807 INFO L78 Accepts]: Start accepts. Automaton has 20567 states and 32332 transitions. Word has length 74 [2021-01-06 19:36:42,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:36:42,807 INFO L481 AbstractCegarLoop]: Abstraction has 20567 states and 32332 transitions. [2021-01-06 19:36:42,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:36:42,808 INFO L276 IsEmpty]: Start isEmpty. Operand 20567 states and 32332 transitions. [2021-01-06 19:36:42,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-01-06 19:36:42,810 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:36:42,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:36:42,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 19:36:42,811 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:36:42,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:36:42,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1916429764, now seen corresponding path program 1 times [2021-01-06 19:36:42,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:36:42,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515859355] [2021-01-06 19:36:42,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:36:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:36:42,862 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 19:36:42,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515859355] [2021-01-06 19:36:42,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:36:42,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:36:42,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547875332] [2021-01-06 19:36:42,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:36:42,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:36:42,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:36:42,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:36:42,865 INFO L87 Difference]: Start difference. First operand 20567 states and 32332 transitions. Second operand 3 states. [2021-01-06 19:36:44,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:36:44,463 INFO L93 Difference]: Finished difference Result 61663 states and 96934 transitions. [2021-01-06 19:36:44,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:36:44,465 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2021-01-06 19:36:44,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:36:44,598 INFO L225 Difference]: With dead ends: 61663 [2021-01-06 19:36:44,598 INFO L226 Difference]: Without dead ends: 41124 [2021-01-06 19:36:44,637 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 19:36:44,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41124 states. [2021-01-06 19:36:45,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41124 to 20569. [2021-01-06 19:36:45,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20569 states. [2021-01-06 19:36:45,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20569 states to 20569 states and 32334 transitions. [2021-01-06 19:36:45,953 INFO L78 Accepts]: Start accepts. Automaton has 20569 states and 32334 transitions. Word has length 75 [2021-01-06 19:36:45,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:36:45,953 INFO L481 AbstractCegarLoop]: Abstraction has 20569 states and 32334 transitions. [2021-01-06 19:36:45,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:36:45,953 INFO L276 IsEmpty]: Start isEmpty. Operand 20569 states and 32334 transitions. [2021-01-06 19:36:45,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-06 19:36:45,954 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:36:45,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:36:45,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 19:36:45,955 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:36:45,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:36:45,956 INFO L82 PathProgramCache]: Analyzing trace with hash 539922453, now seen corresponding path program 1 times [2021-01-06 19:36:45,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:36:45,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639703865] [2021-01-06 19:36:45,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:36:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:36:46,193 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 19:36:46,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639703865] [2021-01-06 19:36:46,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:36:46,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:36:46,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661204684] [2021-01-06 19:36:46,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:36:46,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:36:46,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:36:46,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:36:46,197 INFO L87 Difference]: Start difference. First operand 20569 states and 32334 transitions. Second operand 4 states. [2021-01-06 19:36:47,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:36:47,474 INFO L93 Difference]: Finished difference Result 60967 states and 95802 transitions. [2021-01-06 19:36:47,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:36:47,475 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2021-01-06 19:36:47,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:36:47,638 INFO L225 Difference]: With dead ends: 60967 [2021-01-06 19:36:47,638 INFO L226 Difference]: Without dead ends: 40410 [2021-01-06 19:36:47,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:36:47,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40410 states. [2021-01-06 19:36:49,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40410 to 40408. [2021-01-06 19:36:49,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40408 states. [2021-01-06 19:36:49,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40408 states to 40408 states and 63033 transitions. [2021-01-06 19:36:49,697 INFO L78 Accepts]: Start accepts. Automaton has 40408 states and 63033 transitions. Word has length 76 [2021-01-06 19:36:49,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:36:49,698 INFO L481 AbstractCegarLoop]: Abstraction has 40408 states and 63033 transitions. [2021-01-06 19:36:49,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:36:49,698 INFO L276 IsEmpty]: Start isEmpty. Operand 40408 states and 63033 transitions. [2021-01-06 19:36:49,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-06 19:36:49,699 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:36:49,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:36:49,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-06 19:36:49,700 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:36:49,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:36:49,700 INFO L82 PathProgramCache]: Analyzing trace with hash 31107364, now seen corresponding path program 1 times [2021-01-06 19:36:49,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:36:49,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137326385] [2021-01-06 19:36:49,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:36:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:36:49,947 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2021-01-06 19:36:49,962 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 19:36:49,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137326385] [2021-01-06 19:36:49,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:36:49,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:36:49,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211188752] [2021-01-06 19:36:49,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:36:49,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:36:49,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:36:49,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:36:49,967 INFO L87 Difference]: Start difference. First operand 40408 states and 63033 transitions. Second operand 4 states. [2021-01-06 19:36:52,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:36:52,880 INFO L93 Difference]: Finished difference Result 119716 states and 186647 transitions. [2021-01-06 19:36:52,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:36:52,881 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2021-01-06 19:36:52,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:36:53,055 INFO L225 Difference]: With dead ends: 119716 [2021-01-06 19:36:53,056 INFO L226 Difference]: Without dead ends: 79354 [2021-01-06 19:36:53,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:36:53,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79354 states. [2021-01-06 19:36:56,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79354 to 79352. [2021-01-06 19:36:56,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79352 states. [2021-01-06 19:36:56,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79352 states to 79352 states and 122783 transitions. [2021-01-06 19:36:56,446 INFO L78 Accepts]: Start accepts. Automaton has 79352 states and 122783 transitions. Word has length 76 [2021-01-06 19:36:56,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:36:56,447 INFO L481 AbstractCegarLoop]: Abstraction has 79352 states and 122783 transitions. [2021-01-06 19:36:56,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:36:56,447 INFO L276 IsEmpty]: Start isEmpty. Operand 79352 states and 122783 transitions. [2021-01-06 19:36:56,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-01-06 19:36:56,449 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:36:56,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:36:56,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-06 19:36:56,450 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:36:56,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:36:56,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1176909096, now seen corresponding path program 1 times [2021-01-06 19:36:56,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:36:56,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809878744] [2021-01-06 19:36:56,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:36:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:36:56,486 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 19:36:56,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809878744] [2021-01-06 19:36:56,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:36:56,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:36:56,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922277825] [2021-01-06 19:36:56,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:36:56,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:36:56,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:36:56,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:36:56,489 INFO L87 Difference]: Start difference. First operand 79352 states and 122783 transitions. Second operand 3 states. [2021-01-06 19:37:01,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:37:01,445 INFO L93 Difference]: Finished difference Result 237932 states and 368157 transitions. [2021-01-06 19:37:01,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:37:01,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2021-01-06 19:37:01,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:37:01,988 INFO L225 Difference]: With dead ends: 237932 [2021-01-06 19:37:01,988 INFO L226 Difference]: Without dead ends: 158654 [2021-01-06 19:37:02,118 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 19:37:02,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158654 states. [2021-01-06 19:37:05,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158654 to 79360. [2021-01-06 19:37:05,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79360 states. [2021-01-06 19:37:06,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79360 states to 79360 states and 122791 transitions. [2021-01-06 19:37:06,025 INFO L78 Accepts]: Start accepts. Automaton has 79360 states and 122791 transitions. Word has length 77 [2021-01-06 19:37:06,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:37:06,025 INFO L481 AbstractCegarLoop]: Abstraction has 79360 states and 122791 transitions. [2021-01-06 19:37:06,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:37:06,025 INFO L276 IsEmpty]: Start isEmpty. Operand 79360 states and 122791 transitions. [2021-01-06 19:37:06,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-01-06 19:37:06,027 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:37:06,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:37:06,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-06 19:37:06,028 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:37:06,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:37:06,028 INFO L82 PathProgramCache]: Analyzing trace with hash 604186441, now seen corresponding path program 1 times [2021-01-06 19:37:06,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:37:06,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225267106] [2021-01-06 19:37:06,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:37:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:37:06,132 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 19:37:06,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225267106] [2021-01-06 19:37:06,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:37:06,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:37:06,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694113661] [2021-01-06 19:37:06,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:37:06,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:37:06,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:37:06,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:37:06,135 INFO L87 Difference]: Start difference. First operand 79360 states and 122791 transitions. Second operand 4 states. [2021-01-06 19:37:11,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:37:11,960 INFO L93 Difference]: Finished difference Result 235108 states and 363554 transitions. [2021-01-06 19:37:11,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:37:11,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2021-01-06 19:37:11,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:37:12,452 INFO L225 Difference]: With dead ends: 235108 [2021-01-06 19:37:12,452 INFO L226 Difference]: Without dead ends: 155803 [2021-01-06 19:37:12,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:37:12,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155803 states. [2021-01-06 19:37:18,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155803 to 155801. [2021-01-06 19:37:18,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155801 states. [2021-01-06 19:37:19,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155801 states to 155801 states and 239045 transitions. [2021-01-06 19:37:19,278 INFO L78 Accepts]: Start accepts. Automaton has 155801 states and 239045 transitions. Word has length 78 [2021-01-06 19:37:19,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:37:19,279 INFO L481 AbstractCegarLoop]: Abstraction has 155801 states and 239045 transitions. [2021-01-06 19:37:19,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:37:19,279 INFO L276 IsEmpty]: Start isEmpty. Operand 155801 states and 239045 transitions. [2021-01-06 19:37:19,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-01-06 19:37:19,282 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:37:19,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:37:19,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-01-06 19:37:19,283 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:37:19,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:37:19,284 INFO L82 PathProgramCache]: Analyzing trace with hash 120131000, now seen corresponding path program 1 times [2021-01-06 19:37:19,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:37:19,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373441233] [2021-01-06 19:37:19,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:37:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:37:19,383 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 19:37:19,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373441233] [2021-01-06 19:37:19,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:37:19,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:37:19,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977455058] [2021-01-06 19:37:19,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:37:19,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:37:19,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:37:19,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:37:19,386 INFO L87 Difference]: Start difference. First operand 155801 states and 239045 transitions. Second operand 4 states. [2021-01-06 19:37:30,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:37:30,974 INFO L93 Difference]: Finished difference Result 461429 states and 707439 transitions. [2021-01-06 19:37:30,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:37:30,975 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2021-01-06 19:37:30,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:37:31,776 INFO L225 Difference]: With dead ends: 461429 [2021-01-06 19:37:31,776 INFO L226 Difference]: Without dead ends: 305787 [2021-01-06 19:37:31,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:37:32,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305787 states. [2021-01-06 19:37:45,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305787 to 305785. [2021-01-06 19:37:45,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305785 states. [2021-01-06 19:37:46,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305785 states to 305785 states and 465045 transitions. [2021-01-06 19:37:46,255 INFO L78 Accepts]: Start accepts. Automaton has 305785 states and 465045 transitions. Word has length 78 [2021-01-06 19:37:46,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:37:46,255 INFO L481 AbstractCegarLoop]: Abstraction has 305785 states and 465045 transitions. [2021-01-06 19:37:46,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:37:46,255 INFO L276 IsEmpty]: Start isEmpty. Operand 305785 states and 465045 transitions. [2021-01-06 19:37:46,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-01-06 19:37:46,274 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:37:46,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:37:46,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-01-06 19:37:46,275 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:37:46,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:37:46,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1883818476, now seen corresponding path program 1 times [2021-01-06 19:37:46,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:37:46,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556572793] [2021-01-06 19:37:46,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:37:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:37:46,361 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 19:37:46,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556572793] [2021-01-06 19:37:46,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:37:46,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:37:46,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378440235] [2021-01-06 19:37:46,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:37:46,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:37:46,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:37:46,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:37:46,365 INFO L87 Difference]: Start difference. First operand 305785 states and 465045 transitions. Second operand 3 states. [2021-01-06 19:38:09,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:38:09,934 INFO L93 Difference]: Finished difference Result 916061 states and 1393543 transitions. [2021-01-06 19:38:09,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:38:09,935 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2021-01-06 19:38:09,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:38:11,344 INFO L225 Difference]: With dead ends: 916061 [2021-01-06 19:38:11,345 INFO L226 Difference]: Without dead ends: 611339 [2021-01-06 19:38:11,665 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 19:38:12,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611339 states. [2021-01-06 19:38:31,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611339 to 305817. [2021-01-06 19:38:31,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305817 states. [2021-01-06 19:38:32,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305817 states to 305817 states and 465077 transitions. [2021-01-06 19:38:32,685 INFO L78 Accepts]: Start accepts. Automaton has 305817 states and 465077 transitions. Word has length 79 [2021-01-06 19:38:32,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:38:32,685 INFO L481 AbstractCegarLoop]: Abstraction has 305817 states and 465077 transitions. [2021-01-06 19:38:32,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:38:32,686 INFO L276 IsEmpty]: Start isEmpty. Operand 305817 states and 465077 transitions. [2021-01-06 19:38:32,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-01-06 19:38:32,691 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:38:32,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:38:32,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-01-06 19:38:32,692 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:38:32,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:38:32,693 INFO L82 PathProgramCache]: Analyzing trace with hash 809988221, now seen corresponding path program 1 times [2021-01-06 19:38:32,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:38:32,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204801637] [2021-01-06 19:38:32,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:38:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:38:32,850 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 19:38:32,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204801637] [2021-01-06 19:38:32,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:38:32,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:38:32,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614266757] [2021-01-06 19:38:32,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:38:32,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:38:32,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:38:32,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:38:32,855 INFO L87 Difference]: Start difference. First operand 305817 states and 465077 transitions. Second operand 4 states. [2021-01-06 19:39:00,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:39:00,394 INFO L93 Difference]: Finished difference Result 905584 states and 1376019 transitions. [2021-01-06 19:39:00,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:39:00,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2021-01-06 19:39:00,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:39:02,050 INFO L225 Difference]: With dead ends: 905584 [2021-01-06 19:39:02,050 INFO L226 Difference]: Without dead ends: 600018 [2021-01-06 19:39:02,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:39:02,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600018 states. [2021-01-06 19:39:35,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600018 to 600016. [2021-01-06 19:39:35,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600016 states. [2021-01-06 19:39:39,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600016 states to 600016 states and 904133 transitions. [2021-01-06 19:39:39,167 INFO L78 Accepts]: Start accepts. Automaton has 600016 states and 904133 transitions. Word has length 80 [2021-01-06 19:39:39,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:39:39,167 INFO L481 AbstractCegarLoop]: Abstraction has 600016 states and 904133 transitions. [2021-01-06 19:39:39,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 19:39:39,167 INFO L276 IsEmpty]: Start isEmpty. Operand 600016 states and 904133 transitions. [2021-01-06 19:39:39,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-01-06 19:39:39,194 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:39:39,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:39:39,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-01-06 19:39:39,195 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:39:39,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:39:39,199 INFO L82 PathProgramCache]: Analyzing trace with hash -715330484, now seen corresponding path program 1 times [2021-01-06 19:39:39,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:39:39,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196711796] [2021-01-06 19:39:39,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:39:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:39:39,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:39:39,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196711796] [2021-01-06 19:39:39,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:39:39,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 19:39:39,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471480843] [2021-01-06 19:39:39,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 19:39:39,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:39:39,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 19:39:39,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 19:39:39,413 INFO L87 Difference]: Start difference. First operand 600016 states and 904133 transitions. Second operand 4 states. [2021-01-06 19:39:59,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:39:59,564 INFO L93 Difference]: Finished difference Result 981726 states and 1475874 transitions. [2021-01-06 19:39:59,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 19:39:59,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2021-01-06 19:39:59,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted.