/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/loop-lit/gj2007.c.i.p+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 06:56:42,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:56:42,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:56:42,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 06:56:42,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 06:56:42,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 06:56:42,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 06:56:42,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 06:56:42,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 06:56:42,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 06:56:42,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 06:56:42,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 06:56:42,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 06:56:42,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 06:56:42,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 06:56:42,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 06:56:42,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 06:56:42,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 06:56:42,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 06:56:42,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 06:56:42,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 06:56:42,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 06:56:42,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 06:56:42,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 06:56:43,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 06:56:43,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 06:56:43,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 06:56:43,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 06:56:43,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 06:56:43,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 06:56:43,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 06:56:43,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 06:56:43,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 06:56:43,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 06:56:43,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 06:56:43,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 06:56:43,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 06:56:43,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 06:56:43,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 06:56:43,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 06:56:43,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 06:56:43,027 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 06:56:43,086 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:56:43,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:56:43,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:56:43,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:56:43,092 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:56:43,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:56:43,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:56:43,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:56:43,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:56:43,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:56:43,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:56:43,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:56:43,095 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:56:43,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:56:43,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:56:43,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:56:43,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:56:43,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:56:43,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:56:43,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:56:43,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:56:43,097 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:56:43,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:56:43,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:56:43,098 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:56:43,098 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:56:43,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:56:43,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:56:43,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:56:43,592 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:56:43,593 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:56:43,595 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/gj2007.c.i.p+nlh-reducer.c [2020-12-23 06:56:43,695 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6fe6f9202/16f4a9717eac483185c314fcfeaf28b8/FLAG0d4376792 [2020-12-23 06:56:44,456 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:56:44,457 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-lit/gj2007.c.i.p+nlh-reducer.c [2020-12-23 06:56:44,471 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6fe6f9202/16f4a9717eac483185c314fcfeaf28b8/FLAG0d4376792 [2020-12-23 06:56:44,788 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6fe6f9202/16f4a9717eac483185c314fcfeaf28b8 [2020-12-23 06:56:44,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:56:44,800 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:56:44,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:56:44,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:56:44,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:56:44,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:56:44" (1/1) ... [2020-12-23 06:56:44,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65c7949e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:44, skipping insertion in model container [2020-12-23 06:56:44,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:56:44" (1/1) ... [2020-12-23 06:56:44,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:56:44,914 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~__VERIFIER_assert__cond~0,] [2020-12-23 06:56:45,173 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/loop-lit/gj2007.c.i.p+nlh-reducer.c[6448,6461] left hand side expression in assignment: lhs: VariableLHS[~__return_1121~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] [2020-12-23 06:56:45,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:56:45,315 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~__VERIFIER_assert__cond~0,] [2020-12-23 06:56:45,421 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/loop-lit/gj2007.c.i.p+nlh-reducer.c[6448,6461] left hand side expression in assignment: lhs: VariableLHS[~__return_1121~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__y~0,] [2020-12-23 06:56:45,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:56:45,482 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:56:45,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:45 WrapperNode [2020-12-23 06:56:45,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:56:45,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:56:45,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:56:45,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:56:45,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:45" (1/1) ... [2020-12-23 06:56:45,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:45" (1/1) ... [2020-12-23 06:56:45,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:56:45,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:56:45,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:56:45,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:56:45,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:45" (1/1) ... [2020-12-23 06:56:45,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:45" (1/1) ... [2020-12-23 06:56:45,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:45" (1/1) ... [2020-12-23 06:56:45,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:45" (1/1) ... [2020-12-23 06:56:45,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:45" (1/1) ... [2020-12-23 06:56:45,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:45" (1/1) ... [2020-12-23 06:56:45,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:45" (1/1) ... [2020-12-23 06:56:45,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:56:45,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:56:45,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:56:45,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:56:45,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:56:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:56:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:56:45,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:56:45,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:56:46,840 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:56:46,841 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 06:56:46,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:56:46 BoogieIcfgContainer [2020-12-23 06:56:46,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:56:46,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:56:46,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:56:46,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:56:46,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:56:44" (1/3) ... [2020-12-23 06:56:46,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6254811c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:56:46, skipping insertion in model container [2020-12-23 06:56:46,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:56:45" (2/3) ... [2020-12-23 06:56:46,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6254811c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:56:46, skipping insertion in model container [2020-12-23 06:56:46,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:56:46" (3/3) ... [2020-12-23 06:56:46,855 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007.c.i.p+nlh-reducer.c [2020-12-23 06:56:46,864 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:56:46,873 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 06:56:46,902 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 06:56:46,943 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:56:46,943 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:56:46,944 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:56:46,944 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:56:46,944 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:56:46,944 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:56:46,945 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:56:46,945 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:56:46,972 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2020-12-23 06:56:46,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 06:56:46,992 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:56:46,993 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:56:46,994 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:56:47,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:56:47,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1067704148, now seen corresponding path program 1 times [2020-12-23 06:56:47,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:56:47,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870707876] [2020-12-23 06:56:47,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:56:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:56:47,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:56:47,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870707876] [2020-12-23 06:56:47,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:56:47,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 06:56:47,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542270914] [2020-12-23 06:56:47,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 06:56:47,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:56:47,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 06:56:47,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 06:56:47,542 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 3 states. [2020-12-23 06:56:47,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:56:47,999 INFO L93 Difference]: Finished difference Result 284 states and 554 transitions. [2020-12-23 06:56:48,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 06:56:48,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2020-12-23 06:56:48,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:56:48,017 INFO L225 Difference]: With dead ends: 284 [2020-12-23 06:56:48,017 INFO L226 Difference]: Without dead ends: 141 [2020-12-23 06:56:48,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 06:56:48,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-12-23 06:56:48,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2020-12-23 06:56:48,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-12-23 06:56:48,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 208 transitions. [2020-12-23 06:56:48,080 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 208 transitions. Word has length 139 [2020-12-23 06:56:48,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:56:48,080 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 208 transitions. [2020-12-23 06:56:48,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 06:56:48,081 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 208 transitions. [2020-12-23 06:56:48,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 06:56:48,086 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:56:48,086 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:56:48,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:56:48,087 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:56:48,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:56:48,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1752580255, now seen corresponding path program 1 times [2020-12-23 06:56:48,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:56:48,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427935626] [2020-12-23 06:56:48,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:56:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:56:48,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:56:48,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427935626] [2020-12-23 06:56:48,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:56:48,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 06:56:48,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580456864] [2020-12-23 06:56:48,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 06:56:48,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:56:48,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 06:56:48,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 06:56:48,277 INFO L87 Difference]: Start difference. First operand 141 states and 208 transitions. Second operand 3 states. [2020-12-23 06:56:48,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:56:48,837 INFO L93 Difference]: Finished difference Result 406 states and 605 transitions. [2020-12-23 06:56:48,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 06:56:48,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2020-12-23 06:56:48,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:56:48,841 INFO L225 Difference]: With dead ends: 406 [2020-12-23 06:56:48,841 INFO L226 Difference]: Without dead ends: 273 [2020-12-23 06:56:48,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 06:56:48,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-12-23 06:56:48,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2020-12-23 06:56:48,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-12-23 06:56:48,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 341 transitions. [2020-12-23 06:56:48,876 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 341 transitions. Word has length 139 [2020-12-23 06:56:48,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:56:48,876 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 341 transitions. [2020-12-23 06:56:48,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 06:56:48,877 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 341 transitions. [2020-12-23 06:56:48,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 06:56:48,880 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:56:48,881 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:56:48,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 06:56:48,881 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:56:48,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:56:48,882 INFO L82 PathProgramCache]: Analyzing trace with hash 2041942551, now seen corresponding path program 1 times [2020-12-23 06:56:48,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:56:48,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354893332] [2020-12-23 06:56:48,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:56:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:56:49,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:56:49,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354893332] [2020-12-23 06:56:49,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:56:49,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 06:56:49,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809802028] [2020-12-23 06:56:49,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 06:56:49,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:56:49,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 06:56:49,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 06:56:49,164 INFO L87 Difference]: Start difference. First operand 273 states and 341 transitions. Second operand 6 states. [2020-12-23 06:56:49,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:56:49,823 INFO L93 Difference]: Finished difference Result 402 states and 470 transitions. [2020-12-23 06:56:49,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 06:56:49,824 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2020-12-23 06:56:49,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:56:49,826 INFO L225 Difference]: With dead ends: 402 [2020-12-23 06:56:49,827 INFO L226 Difference]: Without dead ends: 267 [2020-12-23 06:56:49,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 06:56:49,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-12-23 06:56:49,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2020-12-23 06:56:49,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-12-23 06:56:49,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 332 transitions. [2020-12-23 06:56:49,860 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 332 transitions. Word has length 139 [2020-12-23 06:56:49,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:56:49,861 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 332 transitions. [2020-12-23 06:56:49,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 06:56:49,861 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 332 transitions. [2020-12-23 06:56:49,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 06:56:49,864 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:56:49,865 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:56:49,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 06:56:49,868 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:56:49,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:56:49,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1527946145, now seen corresponding path program 1 times [2020-12-23 06:56:49,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:56:49,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450827729] [2020-12-23 06:56:49,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:56:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:56:50,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:56:50,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450827729] [2020-12-23 06:56:50,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:56:50,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 06:56:50,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001934437] [2020-12-23 06:56:50,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 06:56:50,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:56:50,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 06:56:50,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-23 06:56:50,071 INFO L87 Difference]: Start difference. First operand 267 states and 332 transitions. Second operand 7 states. [2020-12-23 06:56:50,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:56:50,843 INFO L93 Difference]: Finished difference Result 394 states and 459 transitions. [2020-12-23 06:56:50,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 06:56:50,844 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-12-23 06:56:50,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:56:50,846 INFO L225 Difference]: With dead ends: 394 [2020-12-23 06:56:50,846 INFO L226 Difference]: Without dead ends: 265 [2020-12-23 06:56:50,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-23 06:56:50,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-12-23 06:56:50,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2020-12-23 06:56:50,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-12-23 06:56:50,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 329 transitions. [2020-12-23 06:56:50,862 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 329 transitions. Word has length 139 [2020-12-23 06:56:50,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:56:50,862 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 329 transitions. [2020-12-23 06:56:50,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 06:56:50,863 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 329 transitions. [2020-12-23 06:56:50,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 06:56:50,865 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:56:50,865 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:56:50,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 06:56:50,866 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:56:50,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:56:50,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1089183555, now seen corresponding path program 1 times [2020-12-23 06:56:50,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:56:50,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022556109] [2020-12-23 06:56:50,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:56:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:56:51,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:56:51,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022556109] [2020-12-23 06:56:51,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:56:51,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-23 06:56:51,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341631078] [2020-12-23 06:56:51,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 06:56:51,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:56:51,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 06:56:51,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-23 06:56:51,109 INFO L87 Difference]: Start difference. First operand 265 states and 329 transitions. Second operand 10 states. [2020-12-23 06:56:52,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:56:52,227 INFO L93 Difference]: Finished difference Result 386 states and 450 transitions. [2020-12-23 06:56:52,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 06:56:52,227 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 139 [2020-12-23 06:56:52,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:56:52,229 INFO L225 Difference]: With dead ends: 386 [2020-12-23 06:56:52,229 INFO L226 Difference]: Without dead ends: 259 [2020-12-23 06:56:52,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-23 06:56:52,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-12-23 06:56:52,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2020-12-23 06:56:52,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-12-23 06:56:52,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 320 transitions. [2020-12-23 06:56:52,243 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 320 transitions. Word has length 139 [2020-12-23 06:56:52,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:56:52,243 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 320 transitions. [2020-12-23 06:56:52,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 06:56:52,244 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 320 transitions. [2020-12-23 06:56:52,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 06:56:52,245 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:56:52,247 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:56:52,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 06:56:52,247 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:56:52,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:56:52,249 INFO L82 PathProgramCache]: Analyzing trace with hash -41763050, now seen corresponding path program 1 times [2020-12-23 06:56:52,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:56:52,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441706678] [2020-12-23 06:56:52,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:56:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:56:52,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:56:52,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441706678] [2020-12-23 06:56:52,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:56:52,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-23 06:56:52,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344881635] [2020-12-23 06:56:52,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 06:56:52,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:56:52,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 06:56:52,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-12-23 06:56:52,498 INFO L87 Difference]: Start difference. First operand 259 states and 320 transitions. Second operand 13 states. [2020-12-23 06:56:53,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:56:53,599 INFO L93 Difference]: Finished difference Result 374 states and 435 transitions. [2020-12-23 06:56:53,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 06:56:53,600 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 139 [2020-12-23 06:56:53,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:56:53,602 INFO L225 Difference]: With dead ends: 374 [2020-12-23 06:56:53,603 INFO L226 Difference]: Without dead ends: 253 [2020-12-23 06:56:53,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-12-23 06:56:53,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-12-23 06:56:53,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2020-12-23 06:56:53,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-12-23 06:56:53,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 311 transitions. [2020-12-23 06:56:53,614 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 311 transitions. Word has length 139 [2020-12-23 06:56:53,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:56:53,615 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 311 transitions. [2020-12-23 06:56:53,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 06:56:53,615 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 311 transitions. [2020-12-23 06:56:53,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 06:56:53,617 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:56:53,618 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:56:53,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 06:56:53,619 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:56:53,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:56:53,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1153200357, now seen corresponding path program 1 times [2020-12-23 06:56:53,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:56:53,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032885717] [2020-12-23 06:56:53,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:56:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:56:53,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:56:53,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032885717] [2020-12-23 06:56:53,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:56:53,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-12-23 06:56:53,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964712899] [2020-12-23 06:56:53,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 06:56:53,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:56:53,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 06:56:53,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-12-23 06:56:53,840 INFO L87 Difference]: Start difference. First operand 253 states and 311 transitions. Second operand 15 states. [2020-12-23 06:56:55,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:56:55,276 INFO L93 Difference]: Finished difference Result 364 states and 422 transitions. [2020-12-23 06:56:55,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 06:56:55,277 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 139 [2020-12-23 06:56:55,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:56:55,279 INFO L225 Difference]: With dead ends: 364 [2020-12-23 06:56:55,280 INFO L226 Difference]: Without dead ends: 249 [2020-12-23 06:56:55,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-12-23 06:56:55,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-12-23 06:56:55,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2020-12-23 06:56:55,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-12-23 06:56:55,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 305 transitions. [2020-12-23 06:56:55,301 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 305 transitions. Word has length 139 [2020-12-23 06:56:55,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:56:55,301 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 305 transitions. [2020-12-23 06:56:55,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 06:56:55,302 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 305 transitions. [2020-12-23 06:56:55,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 06:56:55,305 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:56:55,305 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:56:55,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 06:56:55,305 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:56:55,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:56:55,306 INFO L82 PathProgramCache]: Analyzing trace with hash -717830785, now seen corresponding path program 1 times [2020-12-23 06:56:55,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:56:55,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167683816] [2020-12-23 06:56:55,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:56:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:56:55,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:56:55,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167683816] [2020-12-23 06:56:55,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:56:55,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-23 06:56:55,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84365374] [2020-12-23 06:56:55,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-23 06:56:55,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:56:55,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-23 06:56:55,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-12-23 06:56:55,622 INFO L87 Difference]: Start difference. First operand 249 states and 305 transitions. Second operand 19 states. [2020-12-23 06:56:57,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:56:57,237 INFO L93 Difference]: Finished difference Result 352 states and 408 transitions. [2020-12-23 06:56:57,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-23 06:56:57,238 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 139 [2020-12-23 06:56:57,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:56:57,240 INFO L225 Difference]: With dead ends: 352 [2020-12-23 06:56:57,240 INFO L226 Difference]: Without dead ends: 241 [2020-12-23 06:56:57,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-12-23 06:56:57,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-12-23 06:56:57,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2020-12-23 06:56:57,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-12-23 06:56:57,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 293 transitions. [2020-12-23 06:56:57,253 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 293 transitions. Word has length 139 [2020-12-23 06:56:57,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:56:57,254 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 293 transitions. [2020-12-23 06:56:57,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-23 06:56:57,254 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 293 transitions. [2020-12-23 06:56:57,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 06:56:57,256 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:56:57,257 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:56:57,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 06:56:57,257 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:56:57,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:56:57,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1738769551, now seen corresponding path program 1 times [2020-12-23 06:56:57,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:56:57,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707646917] [2020-12-23 06:56:57,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:56:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:56:57,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:56:57,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707646917] [2020-12-23 06:56:57,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:56:57,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-12-23 06:56:57,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992837593] [2020-12-23 06:56:57,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-23 06:56:57,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:56:57,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-23 06:56:57,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-12-23 06:56:57,619 INFO L87 Difference]: Start difference. First operand 241 states and 293 transitions. Second operand 22 states. [2020-12-23 06:56:59,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:56:59,542 INFO L93 Difference]: Finished difference Result 338 states and 390 transitions. [2020-12-23 06:56:59,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-23 06:56:59,543 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 139 [2020-12-23 06:56:59,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:56:59,545 INFO L225 Difference]: With dead ends: 338 [2020-12-23 06:56:59,545 INFO L226 Difference]: Without dead ends: 235 [2020-12-23 06:56:59,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-12-23 06:56:59,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-12-23 06:56:59,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2020-12-23 06:56:59,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-12-23 06:56:59,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 284 transitions. [2020-12-23 06:56:59,556 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 284 transitions. Word has length 139 [2020-12-23 06:56:59,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:56:59,556 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 284 transitions. [2020-12-23 06:56:59,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-23 06:56:59,557 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 284 transitions. [2020-12-23 06:56:59,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 06:56:59,558 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:56:59,559 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:56:59,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 06:56:59,559 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:56:59,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:56:59,560 INFO L82 PathProgramCache]: Analyzing trace with hash -834827415, now seen corresponding path program 1 times [2020-12-23 06:56:59,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:56:59,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264117186] [2020-12-23 06:56:59,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:56:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:56:59,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:56:59,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264117186] [2020-12-23 06:56:59,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:56:59,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-12-23 06:56:59,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182670566] [2020-12-23 06:56:59,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-23 06:56:59,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:56:59,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-23 06:56:59,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-12-23 06:56:59,910 INFO L87 Difference]: Start difference. First operand 235 states and 284 transitions. Second operand 23 states. [2020-12-23 06:57:02,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:57:02,132 INFO L93 Difference]: Finished difference Result 330 states and 379 transitions. [2020-12-23 06:57:02,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-23 06:57:02,132 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 139 [2020-12-23 06:57:02,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:57:02,134 INFO L225 Difference]: With dead ends: 330 [2020-12-23 06:57:02,135 INFO L226 Difference]: Without dead ends: 233 [2020-12-23 06:57:02,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-12-23 06:57:02,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-12-23 06:57:02,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2020-12-23 06:57:02,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-12-23 06:57:02,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 281 transitions. [2020-12-23 06:57:02,145 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 281 transitions. Word has length 139 [2020-12-23 06:57:02,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:57:02,145 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 281 transitions. [2020-12-23 06:57:02,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-23 06:57:02,145 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 281 transitions. [2020-12-23 06:57:02,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 06:57:02,147 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:57:02,147 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:57:02,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 06:57:02,148 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:57:02,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:57:02,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1868941195, now seen corresponding path program 1 times [2020-12-23 06:57:02,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:57:02,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181287268] [2020-12-23 06:57:02,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:57:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:57:02,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:57:02,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181287268] [2020-12-23 06:57:02,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:57:02,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-12-23 06:57:02,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180624419] [2020-12-23 06:57:02,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-23 06:57:02,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:57:02,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-23 06:57:02,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-12-23 06:57:02,606 INFO L87 Difference]: Start difference. First operand 233 states and 281 transitions. Second operand 26 states. [2020-12-23 06:57:04,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:57:04,996 INFO L93 Difference]: Finished difference Result 322 states and 370 transitions. [2020-12-23 06:57:04,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-23 06:57:04,997 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 139 [2020-12-23 06:57:04,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:57:04,999 INFO L225 Difference]: With dead ends: 322 [2020-12-23 06:57:05,000 INFO L226 Difference]: Without dead ends: 227 [2020-12-23 06:57:05,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-12-23 06:57:05,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-12-23 06:57:05,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2020-12-23 06:57:05,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-12-23 06:57:05,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 272 transitions. [2020-12-23 06:57:05,011 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 272 transitions. Word has length 139 [2020-12-23 06:57:05,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:57:05,013 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 272 transitions. [2020-12-23 06:57:05,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-12-23 06:57:05,013 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 272 transitions. [2020-12-23 06:57:05,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 06:57:05,015 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:57:05,015 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:57:05,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 06:57:05,015 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:57:05,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:57:05,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1432066370, now seen corresponding path program 1 times [2020-12-23 06:57:05,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:57:05,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304473445] [2020-12-23 06:57:05,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:57:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:57:05,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:57:05,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304473445] [2020-12-23 06:57:05,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:57:05,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2020-12-23 06:57:05,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934082784] [2020-12-23 06:57:05,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-12-23 06:57:05,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:57:05,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-12-23 06:57:05,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-12-23 06:57:05,619 INFO L87 Difference]: Start difference. First operand 227 states and 272 transitions. Second operand 29 states. [2020-12-23 06:57:06,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:57:06,759 INFO L93 Difference]: Finished difference Result 310 states and 355 transitions. [2020-12-23 06:57:06,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-23 06:57:06,760 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 139 [2020-12-23 06:57:06,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:57:06,762 INFO L225 Difference]: With dead ends: 310 [2020-12-23 06:57:06,762 INFO L226 Difference]: Without dead ends: 221 [2020-12-23 06:57:06,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-12-23 06:57:06,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-12-23 06:57:06,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2020-12-23 06:57:06,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-12-23 06:57:06,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 263 transitions. [2020-12-23 06:57:06,773 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 263 transitions. Word has length 139 [2020-12-23 06:57:06,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:57:06,773 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 263 transitions. [2020-12-23 06:57:06,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-12-23 06:57:06,773 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 263 transitions. [2020-12-23 06:57:06,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 06:57:06,775 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:57:06,775 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:57:06,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 06:57:06,776 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:57:06,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:57:06,776 INFO L82 PathProgramCache]: Analyzing trace with hash -269817043, now seen corresponding path program 1 times [2020-12-23 06:57:06,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:57:06,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734366374] [2020-12-23 06:57:06,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:57:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:57:07,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:57:07,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734366374] [2020-12-23 06:57:07,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:57:07,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2020-12-23 06:57:07,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417973591] [2020-12-23 06:57:07,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-12-23 06:57:07,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:57:07,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-12-23 06:57:07,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-12-23 06:57:07,423 INFO L87 Difference]: Start difference. First operand 221 states and 263 transitions. Second operand 31 states. [2020-12-23 06:57:10,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:57:10,131 INFO L93 Difference]: Finished difference Result 300 states and 342 transitions. [2020-12-23 06:57:10,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-23 06:57:10,132 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 139 [2020-12-23 06:57:10,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:57:10,134 INFO L225 Difference]: With dead ends: 300 [2020-12-23 06:57:10,134 INFO L226 Difference]: Without dead ends: 217 [2020-12-23 06:57:10,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-12-23 06:57:10,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-12-23 06:57:10,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-12-23 06:57:10,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-12-23 06:57:10,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 257 transitions. [2020-12-23 06:57:10,144 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 257 transitions. Word has length 139 [2020-12-23 06:57:10,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:57:10,144 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 257 transitions. [2020-12-23 06:57:10,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-12-23 06:57:10,144 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 257 transitions. [2020-12-23 06:57:10,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 06:57:10,146 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:57:10,147 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:57:10,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 06:57:10,147 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:57:10,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:57:10,148 INFO L82 PathProgramCache]: Analyzing trace with hash -295254777, now seen corresponding path program 1 times [2020-12-23 06:57:10,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:57:10,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097643616] [2020-12-23 06:57:10,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:57:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:57:10,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:57:10,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097643616] [2020-12-23 06:57:10,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:57:10,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2020-12-23 06:57:10,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54622064] [2020-12-23 06:57:10,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-12-23 06:57:10,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:57:10,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-12-23 06:57:10,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-12-23 06:57:10,932 INFO L87 Difference]: Start difference. First operand 217 states and 257 transitions. Second operand 35 states. [2020-12-23 06:57:13,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:57:13,527 INFO L93 Difference]: Finished difference Result 288 states and 328 transitions. [2020-12-23 06:57:13,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-23 06:57:13,528 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 139 [2020-12-23 06:57:13,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:57:13,530 INFO L225 Difference]: With dead ends: 288 [2020-12-23 06:57:13,530 INFO L226 Difference]: Without dead ends: 209 [2020-12-23 06:57:13,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-12-23 06:57:13,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-12-23 06:57:13,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2020-12-23 06:57:13,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-12-23 06:57:13,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 245 transitions. [2020-12-23 06:57:13,541 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 245 transitions. Word has length 139 [2020-12-23 06:57:13,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:57:13,541 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 245 transitions. [2020-12-23 06:57:13,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-12-23 06:57:13,541 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 245 transitions. [2020-12-23 06:57:13,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 06:57:13,543 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:57:13,543 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:57:13,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 06:57:13,544 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:57:13,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:57:13,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1471149049, now seen corresponding path program 1 times [2020-12-23 06:57:13,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:57:13,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711631542] [2020-12-23 06:57:13,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:57:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:57:14,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:57:14,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711631542] [2020-12-23 06:57:14,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:57:14,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2020-12-23 06:57:14,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840332304] [2020-12-23 06:57:14,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-12-23 06:57:14,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:57:14,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-12-23 06:57:14,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-12-23 06:57:14,501 INFO L87 Difference]: Start difference. First operand 209 states and 245 transitions. Second operand 38 states. [2020-12-23 06:57:17,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:57:17,576 INFO L93 Difference]: Finished difference Result 274 states and 310 transitions. [2020-12-23 06:57:17,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-23 06:57:17,577 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 139 [2020-12-23 06:57:17,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:57:17,579 INFO L225 Difference]: With dead ends: 274 [2020-12-23 06:57:17,579 INFO L226 Difference]: Without dead ends: 203 [2020-12-23 06:57:17,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-12-23 06:57:17,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-12-23 06:57:17,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-12-23 06:57:17,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-12-23 06:57:17,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 236 transitions. [2020-12-23 06:57:17,589 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 236 transitions. Word has length 139 [2020-12-23 06:57:17,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:57:17,589 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 236 transitions. [2020-12-23 06:57:17,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-12-23 06:57:17,589 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 236 transitions. [2020-12-23 06:57:17,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 06:57:17,591 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:57:17,591 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:57:17,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 06:57:17,592 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:57:17,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:57:17,592 INFO L82 PathProgramCache]: Analyzing trace with hash -2129031119, now seen corresponding path program 1 times [2020-12-23 06:57:17,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:57:17,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417733697] [2020-12-23 06:57:17,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:57:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:57:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:57:18,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417733697] [2020-12-23 06:57:18,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:57:18,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2020-12-23 06:57:18,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106848830] [2020-12-23 06:57:18,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-12-23 06:57:18,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:57:18,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-12-23 06:57:18,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-12-23 06:57:18,563 INFO L87 Difference]: Start difference. First operand 203 states and 236 transitions. Second operand 39 states. [2020-12-23 06:57:20,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:57:20,065 INFO L93 Difference]: Finished difference Result 266 states and 299 transitions. [2020-12-23 06:57:20,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-23 06:57:20,066 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 139 [2020-12-23 06:57:20,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:57:20,067 INFO L225 Difference]: With dead ends: 266 [2020-12-23 06:57:20,068 INFO L226 Difference]: Without dead ends: 201 [2020-12-23 06:57:20,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-12-23 06:57:20,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-12-23 06:57:20,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2020-12-23 06:57:20,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-12-23 06:57:20,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 233 transitions. [2020-12-23 06:57:20,078 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 233 transitions. Word has length 139 [2020-12-23 06:57:20,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:57:20,078 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 233 transitions. [2020-12-23 06:57:20,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-12-23 06:57:20,078 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 233 transitions. [2020-12-23 06:57:20,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 06:57:20,080 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:57:20,080 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:57:20,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 06:57:20,080 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:57:20,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:57:20,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1672960723, now seen corresponding path program 1 times [2020-12-23 06:57:20,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:57:20,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952579257] [2020-12-23 06:57:20,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:57:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:57:21,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:57:21,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952579257] [2020-12-23 06:57:21,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:57:21,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2020-12-23 06:57:21,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482108034] [2020-12-23 06:57:21,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-12-23 06:57:21,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:57:21,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-12-23 06:57:21,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-12-23 06:57:21,158 INFO L87 Difference]: Start difference. First operand 201 states and 233 transitions. Second operand 42 states. [2020-12-23 06:57:24,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:57:24,299 INFO L93 Difference]: Finished difference Result 258 states and 290 transitions. [2020-12-23 06:57:24,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-12-23 06:57:24,300 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 139 [2020-12-23 06:57:24,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:57:24,301 INFO L225 Difference]: With dead ends: 258 [2020-12-23 06:57:24,302 INFO L226 Difference]: Without dead ends: 195 [2020-12-23 06:57:24,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-12-23 06:57:24,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-12-23 06:57:24,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2020-12-23 06:57:24,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-12-23 06:57:24,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 224 transitions. [2020-12-23 06:57:24,311 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 224 transitions. Word has length 139 [2020-12-23 06:57:24,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:57:24,312 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 224 transitions. [2020-12-23 06:57:24,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-12-23 06:57:24,312 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 224 transitions. [2020-12-23 06:57:24,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 06:57:24,313 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:57:24,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:57:24,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 06:57:24,314 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:57:24,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:57:24,314 INFO L82 PathProgramCache]: Analyzing trace with hash -371842202, now seen corresponding path program 1 times [2020-12-23 06:57:24,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:57:24,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640159865] [2020-12-23 06:57:24,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:57:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:57:25,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:57:25,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640159865] [2020-12-23 06:57:25,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:57:25,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2020-12-23 06:57:25,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417870900] [2020-12-23 06:57:25,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-12-23 06:57:25,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:57:25,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-12-23 06:57:25,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2020-12-23 06:57:25,554 INFO L87 Difference]: Start difference. First operand 195 states and 224 transitions. Second operand 45 states. [2020-12-23 06:57:28,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:57:28,838 INFO L93 Difference]: Finished difference Result 246 states and 275 transitions. [2020-12-23 06:57:28,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-12-23 06:57:28,841 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 139 [2020-12-23 06:57:28,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:57:28,843 INFO L225 Difference]: With dead ends: 246 [2020-12-23 06:57:28,843 INFO L226 Difference]: Without dead ends: 189 [2020-12-23 06:57:28,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2020-12-23 06:57:28,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-12-23 06:57:28,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2020-12-23 06:57:28,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-12-23 06:57:28,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 215 transitions. [2020-12-23 06:57:28,852 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 215 transitions. Word has length 139 [2020-12-23 06:57:28,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:57:28,852 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 215 transitions. [2020-12-23 06:57:28,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-12-23 06:57:28,852 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 215 transitions. [2020-12-23 06:57:28,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 06:57:28,853 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:57:28,854 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:57:28,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 06:57:28,854 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:57:28,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:57:28,855 INFO L82 PathProgramCache]: Analyzing trace with hash 941521525, now seen corresponding path program 1 times [2020-12-23 06:57:28,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:57:28,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144207656] [2020-12-23 06:57:28,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:57:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:57:30,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:57:30,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144207656] [2020-12-23 06:57:30,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:57:30,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2020-12-23 06:57:30,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524000196] [2020-12-23 06:57:30,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-12-23 06:57:30,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:57:30,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-12-23 06:57:30,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2020-12-23 06:57:30,259 INFO L87 Difference]: Start difference. First operand 189 states and 215 transitions. Second operand 47 states. [2020-12-23 06:57:33,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:57:33,509 INFO L93 Difference]: Finished difference Result 236 states and 262 transitions. [2020-12-23 06:57:33,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-12-23 06:57:33,510 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 139 [2020-12-23 06:57:33,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:57:33,511 INFO L225 Difference]: With dead ends: 236 [2020-12-23 06:57:33,511 INFO L226 Difference]: Without dead ends: 185 [2020-12-23 06:57:33,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2020-12-23 06:57:33,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-12-23 06:57:33,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2020-12-23 06:57:33,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-12-23 06:57:33,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 209 transitions. [2020-12-23 06:57:33,521 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 209 transitions. Word has length 139 [2020-12-23 06:57:33,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:57:33,521 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 209 transitions. [2020-12-23 06:57:33,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-12-23 06:57:33,521 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 209 transitions. [2020-12-23 06:57:33,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 06:57:33,522 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:57:33,522 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:57:33,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 06:57:33,523 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:57:33,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:57:33,523 INFO L82 PathProgramCache]: Analyzing trace with hash 566614415, now seen corresponding path program 1 times [2020-12-23 06:57:33,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:57:33,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125733606] [2020-12-23 06:57:33,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:57:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:57:35,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:57:35,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125733606] [2020-12-23 06:57:35,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:57:35,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2020-12-23 06:57:35,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209371164] [2020-12-23 06:57:35,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-12-23 06:57:35,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:57:35,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-12-23 06:57:35,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2020-12-23 06:57:35,150 INFO L87 Difference]: Start difference. First operand 185 states and 209 transitions. Second operand 51 states. [2020-12-23 06:57:38,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:57:38,556 INFO L93 Difference]: Finished difference Result 224 states and 248 transitions. [2020-12-23 06:57:38,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-12-23 06:57:38,557 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 139 [2020-12-23 06:57:38,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:57:38,558 INFO L225 Difference]: With dead ends: 224 [2020-12-23 06:57:38,559 INFO L226 Difference]: Without dead ends: 177 [2020-12-23 06:57:38,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2020-12-23 06:57:38,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-12-23 06:57:38,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2020-12-23 06:57:38,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-12-23 06:57:38,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 197 transitions. [2020-12-23 06:57:38,567 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 197 transitions. Word has length 139 [2020-12-23 06:57:38,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:57:38,568 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 197 transitions. [2020-12-23 06:57:38,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-12-23 06:57:38,568 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 197 transitions. [2020-12-23 06:57:38,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 06:57:38,569 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:57:38,569 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:57:38,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 06:57:38,570 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:57:38,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:57:38,570 INFO L82 PathProgramCache]: Analyzing trace with hash 325265535, now seen corresponding path program 1 times [2020-12-23 06:57:38,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:57:38,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848024713] [2020-12-23 06:57:38,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:57:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:57:40,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:57:40,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848024713] [2020-12-23 06:57:40,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:57:40,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2020-12-23 06:57:40,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540916014] [2020-12-23 06:57:40,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-12-23 06:57:40,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:57:40,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-12-23 06:57:40,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-12-23 06:57:40,470 INFO L87 Difference]: Start difference. First operand 177 states and 197 transitions. Second operand 53 states. [2020-12-23 06:57:42,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:57:42,149 INFO L93 Difference]: Finished difference Result 212 states and 232 transitions. [2020-12-23 06:57:42,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-12-23 06:57:42,153 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 139 [2020-12-23 06:57:42,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:57:42,154 INFO L225 Difference]: With dead ends: 212 [2020-12-23 06:57:42,154 INFO L226 Difference]: Without dead ends: 143 [2020-12-23 06:57:42,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-12-23 06:57:42,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-12-23 06:57:42,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2020-12-23 06:57:42,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-12-23 06:57:42,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2020-12-23 06:57:42,162 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 139 [2020-12-23 06:57:42,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:57:42,163 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2020-12-23 06:57:42,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-12-23 06:57:42,163 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2020-12-23 06:57:42,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-23 06:57:42,164 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:57:42,165 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:57:42,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-23 06:57:42,165 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:57:42,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:57:42,166 INFO L82 PathProgramCache]: Analyzing trace with hash -2012640870, now seen corresponding path program 1 times [2020-12-23 06:57:42,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:57:42,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815468511] [2020-12-23 06:57:42,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:57:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:57:45,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:57:45,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815468511] [2020-12-23 06:57:45,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:57:45,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2020-12-23 06:57:45,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880548283] [2020-12-23 06:57:45,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-12-23 06:57:45,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:57:45,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-12-23 06:57:45,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2020-12-23 06:57:45,228 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 70 states. [2020-12-23 06:57:46,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:57:46,993 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2020-12-23 06:57:47,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-12-23 06:57:47,004 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 139 [2020-12-23 06:57:47,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:57:47,005 INFO L225 Difference]: With dead ends: 182 [2020-12-23 06:57:47,005 INFO L226 Difference]: Without dead ends: 143 [2020-12-23 06:57:47,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2020-12-23 06:57:47,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-12-23 06:57:47,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2020-12-23 06:57:47,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-23 06:57:47,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2020-12-23 06:57:47,021 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 139 [2020-12-23 06:57:47,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:57:47,021 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2020-12-23 06:57:47,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-12-23 06:57:47,022 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2020-12-23 06:57:47,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-23 06:57:47,023 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:57:47,023 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:57:47,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-23 06:57:47,023 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:57:47,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:57:47,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1420118316, now seen corresponding path program 1 times [2020-12-23 06:57:47,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:57:47,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103257239] [2020-12-23 06:57:47,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:57:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:57:50,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:57:50,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103257239] [2020-12-23 06:57:50,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738837957] [2020-12-23 06:57:50,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:57:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:57:50,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 70 conjunts are in the unsatisfiable core [2020-12-23 06:57:50,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:57:51,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:57:51,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:57:51,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 72 [2020-12-23 06:57:51,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467480460] [2020-12-23 06:57:51,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-12-23 06:57:51,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:57:51,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-12-23 06:57:51,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2020-12-23 06:57:51,064 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 72 states. [2020-12-23 06:57:53,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:57:53,995 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2020-12-23 06:57:54,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-12-23 06:57:54,007 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 141 [2020-12-23 06:57:54,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:57:54,008 INFO L225 Difference]: With dead ends: 148 [2020-12-23 06:57:54,008 INFO L226 Difference]: Without dead ends: 145 [2020-12-23 06:57:54,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2020-12-23 06:57:54,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-23 06:57:54,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144. [2020-12-23 06:57:54,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-12-23 06:57:54,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2020-12-23 06:57:54,017 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 141 [2020-12-23 06:57:54,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:57:54,018 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2020-12-23 06:57:54,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-12-23 06:57:54,018 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2020-12-23 06:57:54,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-23 06:57:54,019 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:57:54,019 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:57:54,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-23 06:57:54,235 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:57:54,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:57:54,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1058373006, now seen corresponding path program 2 times [2020-12-23 06:57:54,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:57:54,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755701067] [2020-12-23 06:57:54,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:57:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:57:57,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:57:57,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755701067] [2020-12-23 06:57:57,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821676164] [2020-12-23 06:57:57,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:57:57,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 06:57:57,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:57:57,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 71 conjunts are in the unsatisfiable core [2020-12-23 06:57:57,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:57:58,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:57:58,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:57:58,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 73 [2020-12-23 06:57:58,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952878797] [2020-12-23 06:57:58,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-12-23 06:57:58,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:57:58,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-12-23 06:57:58,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2020-12-23 06:57:58,053 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 73 states. [2020-12-23 06:58:01,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:58:01,206 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions. [2020-12-23 06:58:01,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-12-23 06:58:01,207 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 143 [2020-12-23 06:58:01,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:58:01,208 INFO L225 Difference]: With dead ends: 150 [2020-12-23 06:58:01,208 INFO L226 Difference]: Without dead ends: 147 [2020-12-23 06:58:01,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2020-12-23 06:58:01,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-12-23 06:58:01,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2020-12-23 06:58:01,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-12-23 06:58:01,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2020-12-23 06:58:01,217 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 143 [2020-12-23 06:58:01,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:58:01,218 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2020-12-23 06:58:01,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-12-23 06:58:01,218 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2020-12-23 06:58:01,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-23 06:58:01,219 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:58:01,219 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:58:01,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-23 06:58:01,434 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:58:01,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:58:01,436 INFO L82 PathProgramCache]: Analyzing trace with hash -818315832, now seen corresponding path program 3 times [2020-12-23 06:58:01,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:58:01,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168000258] [2020-12-23 06:58:01,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:58:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:58:04,831 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:58:04,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168000258] [2020-12-23 06:58:04,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71016557] [2020-12-23 06:58:04,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:58:04,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-23 06:58:04,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:58:04,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 72 conjunts are in the unsatisfiable core [2020-12-23 06:58:04,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:58:05,259 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:58:05,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:58:05,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 74 [2020-12-23 06:58:05,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255045743] [2020-12-23 06:58:05,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-12-23 06:58:05,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:58:05,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-12-23 06:58:05,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2020-12-23 06:58:05,262 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 74 states. [2020-12-23 06:58:07,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:58:07,833 INFO L93 Difference]: Finished difference Result 152 states and 152 transitions. [2020-12-23 06:58:07,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-12-23 06:58:07,836 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 145 [2020-12-23 06:58:07,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:58:07,837 INFO L225 Difference]: With dead ends: 152 [2020-12-23 06:58:07,837 INFO L226 Difference]: Without dead ends: 149 [2020-12-23 06:58:07,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2020-12-23 06:58:07,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-12-23 06:58:07,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2020-12-23 06:58:07,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-12-23 06:58:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2020-12-23 06:58:07,845 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 145 [2020-12-23 06:58:07,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:58:07,845 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2020-12-23 06:58:07,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-12-23 06:58:07,846 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2020-12-23 06:58:07,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-23 06:58:07,846 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:58:07,847 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:58:08,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-23 06:58:08,062 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:58:08,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:58:08,063 INFO L82 PathProgramCache]: Analyzing trace with hash -430024830, now seen corresponding path program 4 times [2020-12-23 06:58:08,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:58:08,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941301898] [2020-12-23 06:58:08,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:58:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:58:11,629 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:58:11,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941301898] [2020-12-23 06:58:11,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5347214] [2020-12-23 06:58:11,629 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:58:11,722 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 06:58:11,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:58:11,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 73 conjunts are in the unsatisfiable core [2020-12-23 06:58:11,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:58:12,004 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:58:12,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:58:12,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 75 [2020-12-23 06:58:12,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754801949] [2020-12-23 06:58:12,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-12-23 06:58:12,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:58:12,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-12-23 06:58:12,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2020-12-23 06:58:12,008 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 75 states. [2020-12-23 06:58:14,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:58:14,560 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2020-12-23 06:58:14,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-12-23 06:58:14,561 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 147 [2020-12-23 06:58:14,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:58:14,562 INFO L225 Difference]: With dead ends: 154 [2020-12-23 06:58:14,562 INFO L226 Difference]: Without dead ends: 151 [2020-12-23 06:58:14,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2020-12-23 06:58:14,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-12-23 06:58:14,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2020-12-23 06:58:14,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-12-23 06:58:14,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2020-12-23 06:58:14,570 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 147 [2020-12-23 06:58:14,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:58:14,570 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2020-12-23 06:58:14,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-12-23 06:58:14,570 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2020-12-23 06:58:14,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-12-23 06:58:14,571 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:58:14,572 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:58:14,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:58:14,787 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:58:14,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:58:14,788 INFO L82 PathProgramCache]: Analyzing trace with hash -944526660, now seen corresponding path program 5 times [2020-12-23 06:58:14,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:58:14,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383151550] [2020-12-23 06:58:14,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:58:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:58:18,457 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:58:18,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383151550] [2020-12-23 06:58:18,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560258359] [2020-12-23 06:58:18,458 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:58:18,554 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-12-23 06:58:18,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:58:18,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 74 conjunts are in the unsatisfiable core [2020-12-23 06:58:18,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:58:18,847 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:58:18,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:58:18,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 76 [2020-12-23 06:58:18,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528086116] [2020-12-23 06:58:18,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-12-23 06:58:18,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:58:18,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-12-23 06:58:18,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2020-12-23 06:58:18,850 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 76 states. [2020-12-23 06:58:22,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:58:22,149 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2020-12-23 06:58:22,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-12-23 06:58:22,149 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 149 [2020-12-23 06:58:22,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:58:22,151 INFO L225 Difference]: With dead ends: 156 [2020-12-23 06:58:22,151 INFO L226 Difference]: Without dead ends: 153 [2020-12-23 06:58:22,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2020-12-23 06:58:22,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-12-23 06:58:22,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2020-12-23 06:58:22,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-12-23 06:58:22,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2020-12-23 06:58:22,158 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 149 [2020-12-23 06:58:22,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:58:22,159 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2020-12-23 06:58:22,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-12-23 06:58:22,159 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2020-12-23 06:58:22,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-23 06:58:22,160 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:58:22,160 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:58:22,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-23 06:58:22,375 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:58:22,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:58:22,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1459546250, now seen corresponding path program 6 times [2020-12-23 06:58:22,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:58:22,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214891301] [2020-12-23 06:58:22,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:58:22,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:58:26,208 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:58:26,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214891301] [2020-12-23 06:58:26,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956723162] [2020-12-23 06:58:26,209 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:58:26,323 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-12-23 06:58:26,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:58:26,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 75 conjunts are in the unsatisfiable core [2020-12-23 06:58:26,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:58:26,608 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:58:26,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:58:26,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 77 [2020-12-23 06:58:26,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218261901] [2020-12-23 06:58:26,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-12-23 06:58:26,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:58:26,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-12-23 06:58:26,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2020-12-23 06:58:26,612 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 77 states. [2020-12-23 06:58:29,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:58:29,859 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2020-12-23 06:58:29,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-12-23 06:58:29,862 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 151 [2020-12-23 06:58:29,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:58:29,863 INFO L225 Difference]: With dead ends: 158 [2020-12-23 06:58:29,863 INFO L226 Difference]: Without dead ends: 155 [2020-12-23 06:58:29,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2020-12-23 06:58:29,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-12-23 06:58:29,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2020-12-23 06:58:29,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-12-23 06:58:29,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2020-12-23 06:58:29,871 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 151 [2020-12-23 06:58:29,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:58:29,871 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2020-12-23 06:58:29,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-12-23 06:58:29,871 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2020-12-23 06:58:29,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-23 06:58:29,872 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:58:29,872 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:58:30,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-23 06:58:30,082 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:58:30,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:58:30,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1822834096, now seen corresponding path program 7 times [2020-12-23 06:58:30,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:58:30,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481799677] [2020-12-23 06:58:30,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:58:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:58:34,050 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:58:34,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481799677] [2020-12-23 06:58:34,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505793232] [2020-12-23 06:58:34,051 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:58:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:58:34,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 76 conjunts are in the unsatisfiable core [2020-12-23 06:58:34,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:58:34,481 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:58:34,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:58:34,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 78 [2020-12-23 06:58:34,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96269492] [2020-12-23 06:58:34,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-12-23 06:58:34,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:58:34,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-12-23 06:58:34,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2020-12-23 06:58:34,485 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand 78 states. [2020-12-23 06:58:36,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:58:36,303 INFO L93 Difference]: Finished difference Result 160 states and 160 transitions. [2020-12-23 06:58:36,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-12-23 06:58:36,304 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 153 [2020-12-23 06:58:36,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:58:36,306 INFO L225 Difference]: With dead ends: 160 [2020-12-23 06:58:36,306 INFO L226 Difference]: Without dead ends: 157 [2020-12-23 06:58:36,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2020-12-23 06:58:36,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-12-23 06:58:36,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2020-12-23 06:58:36,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-12-23 06:58:36,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2020-12-23 06:58:36,314 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 153 [2020-12-23 06:58:36,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:58:36,314 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2020-12-23 06:58:36,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-12-23 06:58:36,314 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2020-12-23 06:58:36,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-23 06:58:36,315 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:58:36,316 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:58:36,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-23 06:58:36,526 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:58:36,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:58:36,527 INFO L82 PathProgramCache]: Analyzing trace with hash -610615958, now seen corresponding path program 8 times [2020-12-23 06:58:36,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:58:36,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754907284] [2020-12-23 06:58:36,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:58:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:58:40,597 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:58:40,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754907284] [2020-12-23 06:58:40,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474192295] [2020-12-23 06:58:40,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:58:40,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 06:58:40,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:58:40,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 77 conjunts are in the unsatisfiable core [2020-12-23 06:58:40,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:58:40,988 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:58:40,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:58:40,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 79 [2020-12-23 06:58:40,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408457408] [2020-12-23 06:58:40,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-12-23 06:58:40,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:58:40,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-12-23 06:58:40,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2020-12-23 06:58:40,993 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 79 states. [2020-12-23 06:58:43,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:58:43,428 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2020-12-23 06:58:43,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-12-23 06:58:43,429 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 155 [2020-12-23 06:58:43,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:58:43,430 INFO L225 Difference]: With dead ends: 162 [2020-12-23 06:58:43,431 INFO L226 Difference]: Without dead ends: 159 [2020-12-23 06:58:43,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2020-12-23 06:58:43,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-12-23 06:58:43,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2020-12-23 06:58:43,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-12-23 06:58:43,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2020-12-23 06:58:43,438 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 155 [2020-12-23 06:58:43,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:58:43,439 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2020-12-23 06:58:43,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-12-23 06:58:43,439 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2020-12-23 06:58:43,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-23 06:58:43,440 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:58:43,440 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:58:43,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:58:43,654 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:58:43,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:58:43,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1601058468, now seen corresponding path program 9 times [2020-12-23 06:58:43,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:58:43,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194744783] [2020-12-23 06:58:43,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:58:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:58:47,938 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:58:47,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194744783] [2020-12-23 06:58:47,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869202303] [2020-12-23 06:58:47,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:58:48,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-12-23 06:58:48,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:58:48,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 78 conjunts are in the unsatisfiable core [2020-12-23 06:58:48,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:58:48,361 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:58:48,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:58:48,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 80 [2020-12-23 06:58:48,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666766867] [2020-12-23 06:58:48,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-12-23 06:58:48,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:58:48,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-12-23 06:58:48,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2020-12-23 06:58:48,365 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 80 states. [2020-12-23 06:58:51,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:58:51,677 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2020-12-23 06:58:51,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-12-23 06:58:51,678 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 157 [2020-12-23 06:58:51,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:58:51,679 INFO L225 Difference]: With dead ends: 164 [2020-12-23 06:58:51,679 INFO L226 Difference]: Without dead ends: 161 [2020-12-23 06:58:51,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2020-12-23 06:58:51,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-12-23 06:58:51,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2020-12-23 06:58:51,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-12-23 06:58:51,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2020-12-23 06:58:51,688 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 157 [2020-12-23 06:58:51,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:58:51,688 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2020-12-23 06:58:51,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-12-23 06:58:51,688 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2020-12-23 06:58:51,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-12-23 06:58:51,689 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:58:51,690 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:58:51,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:58:51,904 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:58:51,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:58:51,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1011370334, now seen corresponding path program 10 times [2020-12-23 06:58:51,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:58:51,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477732843] [2020-12-23 06:58:51,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:58:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:58:56,225 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:58:56,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477732843] [2020-12-23 06:58:56,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111695504] [2020-12-23 06:58:56,226 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:58:56,324 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 06:58:56,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:58:56,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 79 conjunts are in the unsatisfiable core [2020-12-23 06:58:56,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:58:56,560 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:58:56,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:58:56,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 81 [2020-12-23 06:58:56,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794515608] [2020-12-23 06:58:56,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-12-23 06:58:56,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:58:56,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-12-23 06:58:56,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2020-12-23 06:58:56,563 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 81 states. [2020-12-23 06:58:59,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:58:59,528 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions. [2020-12-23 06:58:59,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-12-23 06:58:59,529 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 159 [2020-12-23 06:58:59,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:58:59,530 INFO L225 Difference]: With dead ends: 166 [2020-12-23 06:58:59,530 INFO L226 Difference]: Without dead ends: 163 [2020-12-23 06:58:59,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2020-12-23 06:58:59,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-23 06:58:59,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2020-12-23 06:58:59,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-12-23 06:58:59,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2020-12-23 06:58:59,537 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 159 [2020-12-23 06:58:59,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:58:59,537 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2020-12-23 06:58:59,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-12-23 06:58:59,538 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2020-12-23 06:58:59,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-12-23 06:58:59,538 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:58:59,539 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:58:59,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:58:59,753 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:58:59,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:58:59,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1256756632, now seen corresponding path program 11 times [2020-12-23 06:58:59,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:58:59,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812118131] [2020-12-23 06:58:59,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:58:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:59:04,085 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:59:04,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812118131] [2020-12-23 06:59:04,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570685193] [2020-12-23 06:59:04,086 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:59:04,190 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-12-23 06:59:04,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:59:04,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 80 conjunts are in the unsatisfiable core [2020-12-23 06:59:04,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:59:04,411 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:59:04,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:59:04,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 82 [2020-12-23 06:59:04,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141993303] [2020-12-23 06:59:04,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-12-23 06:59:04,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:59:04,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-12-23 06:59:04,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2020-12-23 06:59:04,413 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 82 states. [2020-12-23 06:59:06,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:59:06,530 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2020-12-23 06:59:06,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-12-23 06:59:06,531 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 161 [2020-12-23 06:59:06,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:59:06,532 INFO L225 Difference]: With dead ends: 168 [2020-12-23 06:59:06,533 INFO L226 Difference]: Without dead ends: 165 [2020-12-23 06:59:06,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2020-12-23 06:59:06,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-12-23 06:59:06,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2020-12-23 06:59:06,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-12-23 06:59:06,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2020-12-23 06:59:06,539 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 161 [2020-12-23 06:59:06,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:59:06,539 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2020-12-23 06:59:06,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-12-23 06:59:06,539 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2020-12-23 06:59:06,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-12-23 06:59:06,540 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:59:06,540 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:59:06,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-23 06:59:06,755 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:59:06,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:59:06,756 INFO L82 PathProgramCache]: Analyzing trace with hash 849787730, now seen corresponding path program 12 times [2020-12-23 06:59:06,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:59:06,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778730285] [2020-12-23 06:59:06,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:59:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:59:11,043 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:59:11,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778730285] [2020-12-23 06:59:11,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909173796] [2020-12-23 06:59:11,043 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:59:11,161 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-12-23 06:59:11,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:59:11,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 81 conjunts are in the unsatisfiable core [2020-12-23 06:59:11,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:59:11,395 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:59:11,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:59:11,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 83 [2020-12-23 06:59:11,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487859132] [2020-12-23 06:59:11,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-12-23 06:59:11,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:59:11,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-12-23 06:59:11,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2020-12-23 06:59:11,398 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand 83 states. [2020-12-23 06:59:13,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:59:13,425 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2020-12-23 06:59:13,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-12-23 06:59:13,425 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 163 [2020-12-23 06:59:13,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:59:13,426 INFO L225 Difference]: With dead ends: 170 [2020-12-23 06:59:13,427 INFO L226 Difference]: Without dead ends: 167 [2020-12-23 06:59:13,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2020-12-23 06:59:13,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-12-23 06:59:13,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2020-12-23 06:59:13,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-12-23 06:59:13,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2020-12-23 06:59:13,433 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 163 [2020-12-23 06:59:13,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:59:13,433 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2020-12-23 06:59:13,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 83 states. [2020-12-23 06:59:13,433 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2020-12-23 06:59:13,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-12-23 06:59:13,434 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:59:13,434 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:59:13,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:59:13,642 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:59:13,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:59:13,643 INFO L82 PathProgramCache]: Analyzing trace with hash 594696844, now seen corresponding path program 13 times [2020-12-23 06:59:13,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:59:13,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446650486] [2020-12-23 06:59:13,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:59:13,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:59:18,052 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:59:18,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446650486] [2020-12-23 06:59:18,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183219064] [2020-12-23 06:59:18,052 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:59:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:59:18,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 82 conjunts are in the unsatisfiable core [2020-12-23 06:59:18,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:59:18,397 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:59:18,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:59:18,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 84 [2020-12-23 06:59:18,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662858180] [2020-12-23 06:59:18,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-12-23 06:59:18,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:59:18,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-12-23 06:59:18,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2020-12-23 06:59:18,400 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 84 states. [2020-12-23 06:59:21,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:59:21,584 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2020-12-23 06:59:21,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2020-12-23 06:59:21,585 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 165 [2020-12-23 06:59:21,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:59:21,587 INFO L225 Difference]: With dead ends: 172 [2020-12-23 06:59:21,587 INFO L226 Difference]: Without dead ends: 169 [2020-12-23 06:59:21,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2020-12-23 06:59:21,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-12-23 06:59:21,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168. [2020-12-23 06:59:21,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-12-23 06:59:21,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2020-12-23 06:59:21,594 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 165 [2020-12-23 06:59:21,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:59:21,594 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2020-12-23 06:59:21,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-12-23 06:59:21,595 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2020-12-23 06:59:21,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-12-23 06:59:21,596 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:59:21,596 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:59:21,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-23 06:59:21,810 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:59:21,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:59:21,811 INFO L82 PathProgramCache]: Analyzing trace with hash 265491270, now seen corresponding path program 14 times [2020-12-23 06:59:21,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:59:21,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038604252] [2020-12-23 06:59:21,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:59:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:59:26,243 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:59:26,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038604252] [2020-12-23 06:59:26,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620173579] [2020-12-23 06:59:26,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:59:26,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 06:59:26,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:59:26,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 83 conjunts are in the unsatisfiable core [2020-12-23 06:59:26,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:59:26,596 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:59:26,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:59:26,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 85 [2020-12-23 06:59:26,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839630525] [2020-12-23 06:59:26,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-12-23 06:59:26,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:59:26,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-12-23 06:59:26,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2020-12-23 06:59:26,599 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand 85 states. [2020-12-23 06:59:28,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:59:28,780 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions. [2020-12-23 06:59:28,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-12-23 06:59:28,781 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 167 [2020-12-23 06:59:28,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:59:28,784 INFO L225 Difference]: With dead ends: 174 [2020-12-23 06:59:28,784 INFO L226 Difference]: Without dead ends: 171 [2020-12-23 06:59:28,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2020-12-23 06:59:28,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-12-23 06:59:28,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170. [2020-12-23 06:59:28,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-12-23 06:59:28,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2020-12-23 06:59:28,792 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 167 [2020-12-23 06:59:28,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:59:28,792 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2020-12-23 06:59:28,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 85 states. [2020-12-23 06:59:28,792 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2020-12-23 06:59:28,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-12-23 06:59:28,793 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:59:28,793 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:59:29,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:59:29,007 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:59:29,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:59:29,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1726514560, now seen corresponding path program 15 times [2020-12-23 06:59:29,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:59:29,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124562567] [2020-12-23 06:59:29,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:59:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:59:33,608 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:59:33,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124562567] [2020-12-23 06:59:33,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901753430] [2020-12-23 06:59:33,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:59:33,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-12-23 06:59:33,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:59:33,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 84 conjunts are in the unsatisfiable core [2020-12-23 06:59:33,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:59:33,981 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:59:33,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:59:33,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 86 [2020-12-23 06:59:33,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034766718] [2020-12-23 06:59:33,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-12-23 06:59:33,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:59:33,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-12-23 06:59:33,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2020-12-23 06:59:33,984 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand 86 states. [2020-12-23 06:59:37,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:59:37,180 INFO L93 Difference]: Finished difference Result 176 states and 176 transitions. [2020-12-23 06:59:37,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-12-23 06:59:37,181 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 169 [2020-12-23 06:59:37,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:59:37,182 INFO L225 Difference]: With dead ends: 176 [2020-12-23 06:59:37,182 INFO L226 Difference]: Without dead ends: 173 [2020-12-23 06:59:37,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2020-12-23 06:59:37,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-12-23 06:59:37,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2020-12-23 06:59:37,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-12-23 06:59:37,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2020-12-23 06:59:37,190 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 169 [2020-12-23 06:59:37,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:59:37,190 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2020-12-23 06:59:37,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-12-23 06:59:37,190 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2020-12-23 06:59:37,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-23 06:59:37,191 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:59:37,191 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:59:37,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-23 06:59:37,392 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:59:37,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:59:37,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1315590458, now seen corresponding path program 16 times [2020-12-23 06:59:37,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:59:37,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114756310] [2020-12-23 06:59:37,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:59:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:59:42,069 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:59:42,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114756310] [2020-12-23 06:59:42,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866615244] [2020-12-23 06:59:42,070 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:59:42,178 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 06:59:42,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:59:42,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 85 conjunts are in the unsatisfiable core [2020-12-23 06:59:42,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:59:42,436 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:59:42,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:59:42,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 87 [2020-12-23 06:59:42,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874505015] [2020-12-23 06:59:42,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-12-23 06:59:42,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:59:42,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-12-23 06:59:42,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2020-12-23 06:59:42,438 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand 87 states. [2020-12-23 06:59:44,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:59:44,270 INFO L93 Difference]: Finished difference Result 178 states and 178 transitions. [2020-12-23 06:59:44,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-12-23 06:59:44,270 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 171 [2020-12-23 06:59:44,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:59:44,272 INFO L225 Difference]: With dead ends: 178 [2020-12-23 06:59:44,272 INFO L226 Difference]: Without dead ends: 175 [2020-12-23 06:59:44,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2020-12-23 06:59:44,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-12-23 06:59:44,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2020-12-23 06:59:44,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-12-23 06:59:44,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2020-12-23 06:59:44,276 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 171 [2020-12-23 06:59:44,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:59:44,277 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2020-12-23 06:59:44,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-12-23 06:59:44,277 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2020-12-23 06:59:44,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-12-23 06:59:44,277 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:59:44,278 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:59:44,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-12-23 06:59:44,479 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:59:44,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:59:44,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1554519668, now seen corresponding path program 17 times [2020-12-23 06:59:44,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:59:44,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189240292] [2020-12-23 06:59:44,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:59:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:59:49,346 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:59:49,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189240292] [2020-12-23 06:59:49,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43928922] [2020-12-23 06:59:49,346 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:59:49,448 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2020-12-23 06:59:49,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:59:49,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 86 conjunts are in the unsatisfiable core [2020-12-23 06:59:49,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:59:49,707 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:59:49,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:59:49,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 88 [2020-12-23 06:59:49,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483218932] [2020-12-23 06:59:49,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-12-23 06:59:49,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:59:49,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-12-23 06:59:49,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2020-12-23 06:59:49,709 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 88 states. [2020-12-23 06:59:52,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:59:52,973 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2020-12-23 06:59:52,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-12-23 06:59:52,974 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 173 [2020-12-23 06:59:52,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:59:52,975 INFO L225 Difference]: With dead ends: 180 [2020-12-23 06:59:52,975 INFO L226 Difference]: Without dead ends: 177 [2020-12-23 06:59:52,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2020-12-23 06:59:52,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-12-23 06:59:52,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 176. [2020-12-23 06:59:52,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-12-23 06:59:52,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2020-12-23 06:59:52,980 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 173 [2020-12-23 06:59:52,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:59:52,981 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2020-12-23 06:59:52,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-12-23 06:59:52,981 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2020-12-23 06:59:52,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-12-23 06:59:52,982 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:59:52,982 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:59:53,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-12-23 06:59:53,196 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:59:53,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:59:53,197 INFO L82 PathProgramCache]: Analyzing trace with hash -762743506, now seen corresponding path program 18 times [2020-12-23 06:59:53,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:59:53,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549366717] [2020-12-23 06:59:53,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:59:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:59:58,187 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:59:58,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549366717] [2020-12-23 06:59:58,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658078706] [2020-12-23 06:59:58,188 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:59:58,316 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2020-12-23 06:59:58,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:59:58,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 87 conjunts are in the unsatisfiable core [2020-12-23 06:59:58,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:59:58,578 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:59:58,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:59:58,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 89 [2020-12-23 06:59:58,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457836303] [2020-12-23 06:59:58,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 89 states [2020-12-23 06:59:58,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:59:58,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2020-12-23 06:59:58,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2020-12-23 06:59:58,581 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 89 states. [2020-12-23 07:00:01,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:00:01,832 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2020-12-23 07:00:01,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-12-23 07:00:01,833 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 175 [2020-12-23 07:00:01,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:00:01,834 INFO L225 Difference]: With dead ends: 182 [2020-12-23 07:00:01,834 INFO L226 Difference]: Without dead ends: 179 [2020-12-23 07:00:01,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2020-12-23 07:00:01,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-12-23 07:00:01,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 178. [2020-12-23 07:00:01,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-12-23 07:00:01,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2020-12-23 07:00:01,839 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 175 [2020-12-23 07:00:01,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:00:01,839 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2020-12-23 07:00:01,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 89 states. [2020-12-23 07:00:01,839 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2020-12-23 07:00:01,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-12-23 07:00:01,840 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:00:01,840 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:00:02,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-12-23 07:00:02,056 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:00:02,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:00:02,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1435372904, now seen corresponding path program 19 times [2020-12-23 07:00:02,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:00:02,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074378515] [2020-12-23 07:00:02,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:00:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:00:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:00:07,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074378515] [2020-12-23 07:00:07,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226097602] [2020-12-23 07:00:07,178 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:00:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:00:07,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 88 conjunts are in the unsatisfiable core [2020-12-23 07:00:07,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:00:07,544 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:00:07,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 07:00:07,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 90 [2020-12-23 07:00:07,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062805084] [2020-12-23 07:00:07,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 90 states [2020-12-23 07:00:07,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:00:07,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2020-12-23 07:00:07,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2020-12-23 07:00:07,546 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand 90 states. [2020-12-23 07:00:10,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:00:10,834 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions. [2020-12-23 07:00:10,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-12-23 07:00:10,835 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 177 [2020-12-23 07:00:10,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:00:10,836 INFO L225 Difference]: With dead ends: 184 [2020-12-23 07:00:10,836 INFO L226 Difference]: Without dead ends: 181 [2020-12-23 07:00:10,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2020-12-23 07:00:10,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-12-23 07:00:10,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 180. [2020-12-23 07:00:10,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-12-23 07:00:10,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2020-12-23 07:00:10,842 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 177 [2020-12-23 07:00:10,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:00:10,842 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2020-12-23 07:00:10,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 90 states. [2020-12-23 07:00:10,842 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2020-12-23 07:00:10,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-12-23 07:00:10,843 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:00:10,844 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:00:11,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:00:11,059 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:00:11,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:00:11,060 INFO L82 PathProgramCache]: Analyzing trace with hash 701333282, now seen corresponding path program 20 times [2020-12-23 07:00:11,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:00:11,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723433940] [2020-12-23 07:00:11,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:00:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:00:16,355 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:00:16,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723433940] [2020-12-23 07:00:16,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448460334] [2020-12-23 07:00:16,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:00:16,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:00:16,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:00:16,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 89 conjunts are in the unsatisfiable core [2020-12-23 07:00:16,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:00:16,732 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:00:16,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 07:00:16,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 91 [2020-12-23 07:00:16,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935938082] [2020-12-23 07:00:16,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-12-23 07:00:16,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:00:16,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-12-23 07:00:16,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2020-12-23 07:00:16,735 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand 91 states. [2020-12-23 07:00:20,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:00:20,068 INFO L93 Difference]: Finished difference Result 186 states and 186 transitions. [2020-12-23 07:00:20,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-12-23 07:00:20,069 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 179 [2020-12-23 07:00:20,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:00:20,070 INFO L225 Difference]: With dead ends: 186 [2020-12-23 07:00:20,070 INFO L226 Difference]: Without dead ends: 183 [2020-12-23 07:00:20,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2020-12-23 07:00:20,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-12-23 07:00:20,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2020-12-23 07:00:20,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-12-23 07:00:20,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2020-12-23 07:00:20,075 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 179 [2020-12-23 07:00:20,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:00:20,075 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2020-12-23 07:00:20,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-12-23 07:00:20,075 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2020-12-23 07:00:20,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-12-23 07:00:20,076 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:00:20,076 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:00:20,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-12-23 07:00:20,290 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:00:20,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:00:20,291 INFO L82 PathProgramCache]: Analyzing trace with hash -336106916, now seen corresponding path program 21 times [2020-12-23 07:00:20,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:00:20,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183459743] [2020-12-23 07:00:20,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:00:20,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:00:25,704 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:00:25,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183459743] [2020-12-23 07:00:25,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655100006] [2020-12-23 07:00:25,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:00:25,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2020-12-23 07:00:25,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:00:25,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 90 conjunts are in the unsatisfiable core [2020-12-23 07:00:25,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:00:26,119 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:00:26,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 07:00:26,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 92 [2020-12-23 07:00:26,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826156505] [2020-12-23 07:00:26,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 92 states [2020-12-23 07:00:26,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:00:26,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2020-12-23 07:00:26,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2020-12-23 07:00:26,122 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand 92 states. [2020-12-23 07:00:29,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:00:29,484 INFO L93 Difference]: Finished difference Result 188 states and 188 transitions. [2020-12-23 07:00:29,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-12-23 07:00:29,485 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 181 [2020-12-23 07:00:29,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:00:29,486 INFO L225 Difference]: With dead ends: 188 [2020-12-23 07:00:29,486 INFO L226 Difference]: Without dead ends: 185 [2020-12-23 07:00:29,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2020-12-23 07:00:29,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-12-23 07:00:29,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2020-12-23 07:00:29,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-12-23 07:00:29,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2020-12-23 07:00:29,491 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 181 [2020-12-23 07:00:29,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:00:29,492 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2020-12-23 07:00:29,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 92 states. [2020-12-23 07:00:29,492 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2020-12-23 07:00:29,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-12-23 07:00:29,493 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:00:29,493 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:00:29,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2020-12-23 07:00:29,697 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:00:29,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:00:29,698 INFO L82 PathProgramCache]: Analyzing trace with hash -883724522, now seen corresponding path program 22 times [2020-12-23 07:00:29,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:00:29,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661237983] [2020-12-23 07:00:29,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:00:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat