/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-pthread/cs_stateful-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 11:41:25,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 11:41:25,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 11:41:25,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 11:41:25,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 11:41:25,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 11:41:25,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 11:41:25,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 11:41:25,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 11:41:25,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 11:41:25,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 11:41:25,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 11:41:25,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 11:41:25,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 11:41:25,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 11:41:25,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 11:41:25,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 11:41:25,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 11:41:25,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 11:41:25,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 11:41:25,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 11:41:25,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 11:41:25,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 11:41:25,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 11:41:25,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 11:41:25,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 11:41:25,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 11:41:25,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 11:41:25,847 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 11:41:25,896 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 11:41:25,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 11:41:25,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 11:41:25,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 11:41:25,902 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 11:41:25,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 11:41:25,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 11:41:25,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 11:41:25,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 11:41:25,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 11:41:25,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 11:41:25,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 11:41:25,905 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 11:41:25,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 11:41:25,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 11:41:25,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 11:41:25,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 11:41:25,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 11:41:25,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 11:41:25,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 11:41:25,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 11:41:25,908 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 11:41:25,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 11:41:25,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 11:41:25,909 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 11:41:25,909 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 11:41:26,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 11:41:26,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 11:41:26,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 11:41:26,337 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 11:41:26,338 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 11:41:26,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_stateful-1.i [2020-12-23 11:41:26,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f1db0de7d/1927ed01f32a4a96badbf47609eea325/FLAG83f41791e [2020-12-23 11:41:27,139 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 11:41:27,141 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_stateful-1.i [2020-12-23 11:41:27,171 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f1db0de7d/1927ed01f32a4a96badbf47609eea325/FLAG83f41791e [2020-12-23 11:41:27,377 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f1db0de7d/1927ed01f32a4a96badbf47609eea325 [2020-12-23 11:41:27,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 11:41:27,384 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 11:41:27,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 11:41:27,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 11:41:27,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 11:41:27,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:41:27" (1/1) ... [2020-12-23 11:41:27,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8ea818b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:41:27, skipping insertion in model container [2020-12-23 11:41:27,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:41:27" (1/1) ... [2020-12-23 11:41:27,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 11:41:27,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 11:41:27,951 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_stateful-1.i[23400,23413] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_error~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: address: IdentifierExpression[~lock,] left hand side expression in assignment: address: IdentifierExpression[~lock,] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_error~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: address: IdentifierExpression[~lock,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[VariableLHS[~__CS_thread_lockedon~0,GLOBAL],[BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_round~0,GLOBAL],IntegerLiteral[256]]]],[IdentifierExpression[~j~0,]]] left hand side expression in assignment: lhs: VariableLHS[~j~1,] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[VariableLHS[~__CS_thread_lockedon~0,GLOBAL],[BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_round~0,GLOBAL],IntegerLiteral[256]]]],[IdentifierExpression[~j~1,]]] left hand side expression in assignment: lhs: VariableLHS[~__CS_error~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: address: IdentifierExpression[~lock,] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[VariableLHS[~__CS_thread_lockedon~0,GLOBAL],[BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_round~0,GLOBAL],IntegerLiteral[256]]]],[BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_thread_index~0,GLOBAL],IntegerLiteral[256]]]] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: address: IdentifierExpression[~lock,] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_error~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_error~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_error~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: address: IdentifierExpression[~id1,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~__CS_thread_allocated~0,GLOBAL],[BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_thread_index~0,GLOBAL],IntegerLiteral[256]]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~__CS_thread_born_round~0,GLOBAL],[BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_thread_index~0,GLOBAL],IntegerLiteral[256]]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~__CS_thread~0,GLOBAL],[BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_thread_index~0,GLOBAL],IntegerLiteral[256]]]] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[VariableLHS[~__CS_thread_status~0,GLOBAL],[BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_round~0,GLOBAL],IntegerLiteral[256]]]],[BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_thread_index~0,GLOBAL],IntegerLiteral[256]]]] left hand side expression in assignment: address: IdentifierExpression[~id1,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~data1~0,GLOBAL],[BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_round~0,GLOBAL],IntegerLiteral[256]]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~data2~0,GLOBAL],[BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_round~0,GLOBAL],IntegerLiteral[256]]]] left hand side expression in assignment: lhs: VariableLHS[~__CS_error~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[VariableLHS[~__CS_cp___CS_thread_status~0,],[IdentifierExpression[~i~0,]]],[IdentifierExpression[~j~2,]]] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[VariableLHS[~__CS_cp___CS_thread_lockedon~0,],[IdentifierExpression[~i~0,]]],[IdentifierExpression[~j~2,]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~__CS_cp_ma~0,],[IdentifierExpression[~i~0,]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~__CS_cp_mb~0,],[IdentifierExpression[~i~0,]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~__CS_cp_data1~0,],[IdentifierExpression[~i~0,]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~__CS_cp_data2~0,],[IdentifierExpression[~i~0,]]] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[VariableLHS[~__CS_thread_status~0,GLOBAL],[IntegerLiteral[1]]],[IntegerLiteral[0]]] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[VariableLHS[~__CS_thread_status~0,GLOBAL],[IntegerLiteral[1]]],[IntegerLiteral[1]]] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[VariableLHS[~__CS_thread_status~0,GLOBAL],[IntegerLiteral[1]]],[IntegerLiteral[2]]] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[VariableLHS[~__CS_thread_lockedon~0,GLOBAL],[IntegerLiteral[1]]],[IntegerLiteral[0]]] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[VariableLHS[~__CS_thread_lockedon~0,GLOBAL],[IntegerLiteral[1]]],[IntegerLiteral[1]]] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[VariableLHS[~__CS_thread_lockedon~0,GLOBAL],[IntegerLiteral[1]]],[IntegerLiteral[2]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~ma~0,GLOBAL],[IntegerLiteral[1]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~mb~0,GLOBAL],[IntegerLiteral[1]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~data1~0,GLOBAL],[IntegerLiteral[1]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~data2~0,GLOBAL],[IntegerLiteral[1]]] left hand side expression in assignment: lhs: VariableLHS[~__CS_round~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_thread_index~0,GLOBAL] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~__CS_thread_born_round~0,GLOBAL],[IntegerLiteral[0]]] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[VariableLHS[~__CS_thread_status~0,GLOBAL],[IntegerLiteral[0]]],[IntegerLiteral[0]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~__CS_thread~0,GLOBAL],[IntegerLiteral[0]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~__CS_thread_allocated~0,GLOBAL],[IntegerLiteral[0]]] left hand side expression in assignment: lhs: VariableLHS[~__CS_round~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[VariableLHS[~__CS_thread_status~0,GLOBAL],[BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_round~0,GLOBAL],IntegerLiteral[256]]]],[IntegerLiteral[0]]] left hand side expression in assignment: lhs: VariableLHS[~__CS_round~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[VariableLHS[~__CS_thread_status~0,GLOBAL],[BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_round~0,GLOBAL],IntegerLiteral[256]]]],[IntegerLiteral[1]]] left hand side expression in assignment: lhs: VariableLHS[~__CS_round~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[VariableLHS[~__CS_thread_status~0,GLOBAL],[BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_round~0,GLOBAL],IntegerLiteral[256]]]],[IntegerLiteral[2]]] [2020-12-23 11:41:28,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 11:41:28,102 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 11:41:28,131 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_stateful-1.i[23400,23413] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_error~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: address: IdentifierExpression[~lock,] left hand side expression in assignment: address: IdentifierExpression[~lock,] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_error~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: address: IdentifierExpression[~lock,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#__CS_thread_lockedon~0,GLOBAL],base],BinaryExpression[ARITHPLUS,BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#__CS_thread_lockedon~0,GLOBAL],offset],BinaryExpression[ARITHMUL,IntegerLiteral[24],BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_round~0,GLOBAL],IntegerLiteral[256]]]],BinaryExpression[ARITHMUL,IntegerLiteral[8],IdentifierExpression[~j~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~j~1,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#__CS_thread_lockedon~0,GLOBAL],base],BinaryExpression[ARITHPLUS,BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#__CS_thread_lockedon~0,GLOBAL],offset],BinaryExpression[ARITHMUL,IntegerLiteral[24],BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_round~0,GLOBAL],IntegerLiteral[256]]]],BinaryExpression[ARITHMUL,IntegerLiteral[8],IdentifierExpression[~j~1,]]]]] left hand side expression in assignment: lhs: VariableLHS[~__CS_error~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: address: IdentifierExpression[~lock,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#__CS_thread_lockedon~0,GLOBAL],base],BinaryExpression[ARITHPLUS,BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#__CS_thread_lockedon~0,GLOBAL],offset],BinaryExpression[ARITHMUL,IntegerLiteral[24],BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_round~0,GLOBAL],IntegerLiteral[256]]]],BinaryExpression[ARITHMUL,IntegerLiteral[8],BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_thread_index~0,GLOBAL],IntegerLiteral[256]]]]]] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: address: IdentifierExpression[~lock,] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_error~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_error~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_error~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: address: IdentifierExpression[~id1,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#__CS_thread_allocated~0,GLOBAL],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#__CS_thread_allocated~0,GLOBAL],offset],BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_thread_index~0,GLOBAL],IntegerLiteral[256]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#__CS_thread_born_round~0,GLOBAL],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#__CS_thread_born_round~0,GLOBAL],offset],BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_thread_index~0,GLOBAL],IntegerLiteral[256]]]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~__CS_thread~0,GLOBAL],[BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_thread_index~0,GLOBAL],IntegerLiteral[256]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#__CS_thread_status~0,GLOBAL],base],BinaryExpression[ARITHPLUS,BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#__CS_thread_status~0,GLOBAL],offset],BinaryExpression[ARITHMUL,IntegerLiteral[3],BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_round~0,GLOBAL],IntegerLiteral[256]]]],BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_thread_index~0,GLOBAL],IntegerLiteral[256]]]]] left hand side expression in assignment: address: IdentifierExpression[~id1,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#data1~0,GLOBAL],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#data1~0,GLOBAL],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_round~0,GLOBAL],IntegerLiteral[256]]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#data2~0,GLOBAL],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#data2~0,GLOBAL],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_round~0,GLOBAL],IntegerLiteral[256]]]]]] left hand side expression in assignment: lhs: VariableLHS[~__CS_error~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#__CS_cp___CS_thread_status~0,],base],BinaryExpression[ARITHPLUS,BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#__CS_cp___CS_thread_status~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[3],IdentifierExpression[~i~0,]]],IdentifierExpression[~j~2,]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#__CS_cp___CS_thread_lockedon~0,],base],BinaryExpression[ARITHPLUS,BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#__CS_cp___CS_thread_lockedon~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[24],IdentifierExpression[~i~0,]]],BinaryExpression[ARITHMUL,IntegerLiteral[8],IdentifierExpression[~j~2,]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#__CS_cp_ma~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#__CS_cp_ma~0,],offset],IdentifierExpression[~i~0,]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#__CS_cp_mb~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#__CS_cp_mb~0,],offset],IdentifierExpression[~i~0,]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#__CS_cp_data1~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#__CS_cp_data1~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#__CS_cp_data2~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#__CS_cp_data2~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#__CS_thread_status~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[3],StructAccessExpression[IdentifierExpression[~#__CS_thread_status~0,GLOBAL],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#__CS_thread_status~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~#__CS_thread_status~0,GLOBAL],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#__CS_thread_status~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[5],StructAccessExpression[IdentifierExpression[~#__CS_thread_status~0,GLOBAL],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#__CS_thread_lockedon~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[~#__CS_thread_lockedon~0,GLOBAL],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#__CS_thread_lockedon~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[~#__CS_thread_lockedon~0,GLOBAL],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#__CS_thread_lockedon~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[40],StructAccessExpression[IdentifierExpression[~#__CS_thread_lockedon~0,GLOBAL],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#ma~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[1],StructAccessExpression[IdentifierExpression[~#ma~0,GLOBAL],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#mb~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[1],StructAccessExpression[IdentifierExpression[~#mb~0,GLOBAL],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#data1~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~#data1~0,GLOBAL],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#data2~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~#data2~0,GLOBAL],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~__CS_round~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_thread_index~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#__CS_thread_born_round~0,GLOBAL],base],StructAccessExpression[IdentifierExpression[~#__CS_thread_born_round~0,GLOBAL],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#__CS_thread_status~0,GLOBAL],base],StructAccessExpression[IdentifierExpression[~#__CS_thread_status~0,GLOBAL],offset]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~__CS_thread~0,GLOBAL],[IntegerLiteral[0]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#__CS_thread_allocated~0,GLOBAL],base],StructAccessExpression[IdentifierExpression[~#__CS_thread_allocated~0,GLOBAL],offset]]] left hand side expression in assignment: lhs: VariableLHS[~__CS_round~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#__CS_thread_status~0,GLOBAL],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#__CS_thread_status~0,GLOBAL],offset],BinaryExpression[ARITHMUL,IntegerLiteral[3],BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_round~0,GLOBAL],IntegerLiteral[256]]]]]] left hand side expression in assignment: lhs: VariableLHS[~__CS_round~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#__CS_thread_status~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[1],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#__CS_thread_status~0,GLOBAL],offset],BinaryExpression[ARITHMUL,IntegerLiteral[3],BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_round~0,GLOBAL],IntegerLiteral[256]]]]]]] left hand side expression in assignment: lhs: VariableLHS[~__CS_round~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__CS_ret~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#__CS_thread_status~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[2],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#__CS_thread_status~0,GLOBAL],offset],BinaryExpression[ARITHMUL,IntegerLiteral[3],BinaryExpression[ARITHMOD,IdentifierExpression[~__CS_round~0,GLOBAL],IntegerLiteral[256]]]]]]] [2020-12-23 11:41:28,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 11:41:28,380 INFO L208 MainTranslator]: Completed translation [2020-12-23 11:41:28,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:41:28 WrapperNode [2020-12-23 11:41:28,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 11:41:28,384 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 11:41:28,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 11:41:28,385 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 11:41:28,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:41:28" (1/1) ... [2020-12-23 11:41:28,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:41:28" (1/1) ... [2020-12-23 11:41:28,525 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 11:41:28,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 11:41:28,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 11:41:28,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 11:41:28,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:41:28" (1/1) ... [2020-12-23 11:41:28,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:41:28" (1/1) ... [2020-12-23 11:41:28,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:41:28" (1/1) ... [2020-12-23 11:41:28,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:41:28" (1/1) ... [2020-12-23 11:41:28,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:41:28" (1/1) ... [2020-12-23 11:41:28,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:41:28" (1/1) ... [2020-12-23 11:41:28,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:41:28" (1/1) ... [2020-12-23 11:41:28,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 11:41:28,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 11:41:28,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 11:41:28,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 11:41:28,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:41:28" (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 11:41:28,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 11:41:28,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 11:41:28,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-23 11:41:28,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 11:41:28,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-23 11:41:28,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 11:41:28,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-23 11:41:28,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 11:41:28,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 11:41:28,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 11:41:29,194 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-23 11:41:29,194 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-23 11:41:29,218 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-23 11:41:29,219 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-23 11:41:29,235 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-23 11:41:29,236 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-23 11:41:33,297 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##706: assume !(~__CS_round~0 % 256 + __CS_cs_~k~0 % 256 < 2);assume false; [2020-12-23 11:41:33,297 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##707: assume !!(~__CS_round~0 % 256 + __CS_cs_~k~0 % 256 < 2);~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256;assume -2147483648 <= __CS_cs_#t~nondet6 && __CS_cs_#t~nondet6 <= 2147483647; [2020-12-23 11:41:33,298 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##713: assume !(~__CS_round~0 % 256 + __CS_cs_~k~0 % 256 < 2);assume false; [2020-12-23 11:41:33,298 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##714: assume !!(~__CS_round~0 % 256 + __CS_cs_~k~0 % 256 < 2);~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256;assume -2147483648 <= __CS_cs_#t~nondet6 && __CS_cs_#t~nondet6 <= 2147483647; [2020-12-23 11:41:33,298 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-10: assume 0 != ~__CS_ret~0 % 256;main_thread_#res.base, main_thread_#res.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#t1~0.base, main_thread_~#t1~0.offset);havoc main_thread_~#t1~0.base, main_thread_~#t1~0.offset;call ULTIMATE.dealloc(main_thread_~#t2~0.base, main_thread_~#t2~0.offset);havoc main_thread_~#t2~0.base, main_thread_~#t2~0.offset; [2020-12-23 11:41:33,298 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-10: assume !(0 != ~__CS_ret~0 % 256); [2020-12-23 11:41:33,299 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-11: assume 0 != ~__CS_ret~0 % 256;main_thread_#res.base, main_thread_#res.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#t1~0.base, main_thread_~#t1~0.offset);havoc main_thread_~#t1~0.base, main_thread_~#t1~0.offset;call ULTIMATE.dealloc(main_thread_~#t2~0.base, main_thread_~#t2~0.offset);havoc main_thread_~#t2~0.base, main_thread_~#t2~0.offset; [2020-12-23 11:41:33,299 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-11: assume !(0 != ~__CS_ret~0 % 256);havoc __CS_cs_#t~nondet5, __CS_cs_#t~nondet6, __CS_cs_#t~ite7, __CS_cs_~k~0;__CS_cs_~k~0 := __CS_cs_#t~nondet5;havoc __CS_cs_#t~nondet5; [2020-12-23 11:41:33,299 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-12: assume 0 != ~__CS_ret~0 % 256;main_thread_#res.base, main_thread_#res.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#t1~0.base, main_thread_~#t1~0.offset);havoc main_thread_~#t1~0.base, main_thread_~#t1~0.offset;call ULTIMATE.dealloc(main_thread_~#t2~0.base, main_thread_~#t2~0.offset);havoc main_thread_~#t2~0.base, main_thread_~#t2~0.offset; [2020-12-23 11:41:33,299 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-12: assume !(0 != ~__CS_ret~0 % 256); [2020-12-23 11:41:33,300 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-38: assume 0 != ~__CS_ret~0 % 256;main_thread_#res.base, main_thread_#res.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#t1~0.base, main_thread_~#t1~0.offset);havoc main_thread_~#t1~0.base, main_thread_~#t1~0.offset;call ULTIMATE.dealloc(main_thread_~#t2~0.base, main_thread_~#t2~0.offset);havoc main_thread_~#t2~0.base, main_thread_~#t2~0.offset; [2020-12-23 11:41:33,300 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-38: assume !(0 != ~__CS_ret~0 % 256); [2020-12-23 11:41:33,300 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-39: assume 0 != ~__CS_ret~0 % 256;main_thread_#res.base, main_thread_#res.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#t1~0.base, main_thread_~#t1~0.offset);havoc main_thread_~#t1~0.base, main_thread_~#t1~0.offset;call ULTIMATE.dealloc(main_thread_~#t2~0.base, main_thread_~#t2~0.offset);havoc main_thread_~#t2~0.base, main_thread_~#t2~0.offset; [2020-12-23 11:41:33,301 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-39: assume !(0 != ~__CS_ret~0 % 256);havoc __CS_cs_#t~nondet5, __CS_cs_#t~nondet6, __CS_cs_#t~ite7, __CS_cs_~k~0;__CS_cs_~k~0 := __CS_cs_#t~nondet5;havoc __CS_cs_#t~nondet5; [2020-12-23 11:41:33,301 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-40: assume 0 != ~__CS_ret~0 % 256;main_thread_#res.base, main_thread_#res.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#t1~0.base, main_thread_~#t1~0.offset);havoc main_thread_~#t1~0.base, main_thread_~#t1~0.offset;call ULTIMATE.dealloc(main_thread_~#t2~0.base, main_thread_~#t2~0.offset);havoc main_thread_~#t2~0.base, main_thread_~#t2~0.offset; [2020-12-23 11:41:33,301 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-40: assume !(0 != ~__CS_ret~0 % 256); [2020-12-23 11:41:33,301 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-66: assume 0 != ~__CS_ret~0 % 256;main_thread_#res.base, main_thread_#res.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#t1~0.base, main_thread_~#t1~0.offset);havoc main_thread_~#t1~0.base, main_thread_~#t1~0.offset;call ULTIMATE.dealloc(main_thread_~#t2~0.base, main_thread_~#t2~0.offset);havoc main_thread_~#t2~0.base, main_thread_~#t2~0.offset; [2020-12-23 11:41:33,301 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-66: assume !(0 != ~__CS_ret~0 % 256); [2020-12-23 11:41:33,302 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-67: assume 0 != ~__CS_ret~0 % 256;main_thread_#res.base, main_thread_#res.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#t1~0.base, main_thread_~#t1~0.offset);havoc main_thread_~#t1~0.base, main_thread_~#t1~0.offset;call ULTIMATE.dealloc(main_thread_~#t2~0.base, main_thread_~#t2~0.offset);havoc main_thread_~#t2~0.base, main_thread_~#t2~0.offset; [2020-12-23 11:41:33,302 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-67: assume !(0 != ~__CS_ret~0 % 256);havoc __CS_cs_#t~nondet5, __CS_cs_#t~nondet6, __CS_cs_#t~ite7, __CS_cs_~k~0;__CS_cs_~k~0 := __CS_cs_#t~nondet5;havoc __CS_cs_#t~nondet5; [2020-12-23 11:41:33,302 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-68: assume 0 != ~__CS_ret~0 % 256;main_thread_#res.base, main_thread_#res.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#t1~0.base, main_thread_~#t1~0.offset);havoc main_thread_~#t1~0.base, main_thread_~#t1~0.offset;call ULTIMATE.dealloc(main_thread_~#t2~0.base, main_thread_~#t2~0.offset);havoc main_thread_~#t2~0.base, main_thread_~#t2~0.offset; [2020-12-23 11:41:33,302 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-68: assume !(0 != ~__CS_ret~0 % 256); [2020-12-23 11:41:33,302 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L561-30: assume !(~__CS_round~0 % 256 + __CS_cs_~k~0 % 256 < 2);assume false; [2020-12-23 11:41:33,303 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L561-30: assume !!(~__CS_round~0 % 256 + __CS_cs_~k~0 % 256 < 2); [2020-12-23 11:41:33,303 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L561-32: ~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256;assume -2147483648 <= __CS_cs_#t~nondet6 && __CS_cs_#t~nondet6 <= 2147483647; [2020-12-23 11:41:33,304 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-30: assume 0 != __CS_cs_#t~nondet6 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite7 := ~__CS_ret_PREEMPTED~0 % 256; [2020-12-23 11:41:33,304 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-30: assume !(0 != __CS_cs_#t~nondet6 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite7 := ~__CS_ret~0 % 256; [2020-12-23 11:41:33,304 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-32: ~__CS_ret~0 := __CS_cs_#t~ite7;havoc __CS_cs_#t~ite7;havoc __CS_cs_#t~nondet6; [2020-12-23 11:41:33,304 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-33: assume 0 != __CS_cs_#t~nondet6 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite7 := ~__CS_ret_PREEMPTED~0 % 256; [2020-12-23 11:41:33,304 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-33: assume !(0 != __CS_cs_#t~nondet6 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite7 := ~__CS_ret~0 % 256; [2020-12-23 11:41:33,305 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-35: ~__CS_ret~0 := __CS_cs_#t~ite7;havoc __CS_cs_#t~ite7;havoc __CS_cs_#t~nondet6; [2020-12-23 11:41:33,305 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-36: assume 0 != __CS_cs_#t~nondet6 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite7 := ~__CS_ret_PREEMPTED~0 % 256; [2020-12-23 11:41:33,308 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-36: assume !(0 != __CS_cs_#t~nondet6 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite7 := ~__CS_ret~0 % 256; [2020-12-23 11:41:33,308 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-38: ~__CS_ret~0 := __CS_cs_#t~ite7;havoc __CS_cs_#t~ite7;havoc __CS_cs_#t~nondet6; [2020-12-23 11:41:33,308 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L561-108: assume !(~__CS_round~0 % 256 + __CS_cs_~k~0 % 256 < 2);assume false; [2020-12-23 11:41:33,308 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L561-108: assume !!(~__CS_round~0 % 256 + __CS_cs_~k~0 % 256 < 2); [2020-12-23 11:41:33,308 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L561-110: ~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256;assume -2147483648 <= __CS_cs_#t~nondet6 && __CS_cs_#t~nondet6 <= 2147483647; [2020-12-23 11:41:33,309 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##419: assume !!(~__CS_round~0 % 256 + __CS_cs_~k~0 % 256 < 2);~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256;assume -2147483648 <= __CS_cs_#t~nondet6 && __CS_cs_#t~nondet6 <= 2147483647; [2020-12-23 11:41:33,309 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##418: assume !(~__CS_round~0 % 256 + __CS_cs_~k~0 % 256 < 2);assume false; [2020-12-23 11:41:33,309 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##426: assume !!(~__CS_round~0 % 256 + __CS_cs_~k~0 % 256 < 2);~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256;assume -2147483648 <= __CS_cs_#t~nondet6 && __CS_cs_#t~nondet6 <= 2147483647; [2020-12-23 11:41:33,309 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##425: assume !(~__CS_round~0 % 256 + __CS_cs_~k~0 % 256 < 2);assume false; [2020-12-23 11:41:33,309 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-114: assume 0 != __CS_cs_#t~nondet6 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite7 := ~__CS_ret_PREEMPTED~0 % 256; [2020-12-23 11:41:33,309 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-114: assume !(0 != __CS_cs_#t~nondet6 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite7 := ~__CS_ret~0 % 256; [2020-12-23 11:41:33,310 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-116: ~__CS_ret~0 := __CS_cs_#t~ite7;havoc __CS_cs_#t~ite7;havoc __CS_cs_#t~nondet6; [2020-12-23 11:41:33,310 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-117: assume 0 != __CS_cs_#t~nondet6 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite7 := ~__CS_ret_PREEMPTED~0 % 256; [2020-12-23 11:41:33,310 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-117: assume !(0 != __CS_cs_#t~nondet6 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite7 := ~__CS_ret~0 % 256; [2020-12-23 11:41:33,314 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-119: ~__CS_ret~0 := __CS_cs_#t~ite7;havoc __CS_cs_#t~ite7;havoc __CS_cs_#t~nondet6; [2020-12-23 11:41:33,314 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-120: assume 0 != __CS_cs_#t~nondet6 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite7 := ~__CS_ret_PREEMPTED~0 % 256; [2020-12-23 11:41:33,314 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-120: assume !(0 != __CS_cs_#t~nondet6 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite7 := ~__CS_ret~0 % 256; [2020-12-23 11:41:33,315 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-122: ~__CS_ret~0 := __CS_cs_#t~ite7;havoc __CS_cs_#t~ite7;havoc __CS_cs_#t~nondet6; [2020-12-23 11:41:33,315 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L561-186: assume !(~__CS_round~0 % 256 + __CS_cs_~k~0 % 256 < 2);assume false; [2020-12-23 11:41:33,315 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L561-186: assume !!(~__CS_round~0 % 256 + __CS_cs_~k~0 % 256 < 2); [2020-12-23 11:41:33,315 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L561-188: ~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256;assume -2147483648 <= __CS_cs_#t~nondet6 && __CS_cs_#t~nondet6 <= 2147483647; [2020-12-23 11:41:33,316 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-198: assume 0 != __CS_cs_#t~nondet6 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite7 := ~__CS_ret_PREEMPTED~0 % 256; [2020-12-23 11:41:33,317 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-198: assume !(0 != __CS_cs_#t~nondet6 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite7 := ~__CS_ret~0 % 256; [2020-12-23 11:41:33,317 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-200: ~__CS_ret~0 := __CS_cs_#t~ite7;havoc __CS_cs_#t~ite7;havoc __CS_cs_#t~nondet6; [2020-12-23 11:41:33,317 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-201: assume 0 != __CS_cs_#t~nondet6 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite7 := ~__CS_ret_PREEMPTED~0 % 256; [2020-12-23 11:41:33,318 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-201: assume !(0 != __CS_cs_#t~nondet6 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite7 := ~__CS_ret~0 % 256; [2020-12-23 11:41:33,318 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-203: ~__CS_ret~0 := __CS_cs_#t~ite7;havoc __CS_cs_#t~ite7;havoc __CS_cs_#t~nondet6; [2020-12-23 11:41:33,318 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-204: assume 0 != __CS_cs_#t~nondet6 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite7 := ~__CS_ret_PREEMPTED~0 % 256; [2020-12-23 11:41:33,318 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-204: assume !(0 != __CS_cs_#t~nondet6 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite7 := ~__CS_ret~0 % 256; [2020-12-23 11:41:33,319 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-206: ~__CS_ret~0 := __CS_cs_#t~ite7;havoc __CS_cs_#t~ite7;havoc __CS_cs_#t~nondet6; [2020-12-23 11:41:33,319 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##131: assume !!(~__CS_round~0 % 256 + __CS_cs_~k~0 % 256 < 2);~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256;assume -2147483648 <= __CS_cs_#t~nondet6 && __CS_cs_#t~nondet6 <= 2147483647; [2020-12-23 11:41:33,319 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##130: assume !(~__CS_round~0 % 256 + __CS_cs_~k~0 % 256 < 2);assume false; [2020-12-23 11:41:33,319 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##137: assume !(~__CS_round~0 % 256 + __CS_cs_~k~0 % 256 < 2);assume false; [2020-12-23 11:41:33,319 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##138: assume !!(~__CS_round~0 % 256 + __CS_cs_~k~0 % 256 < 2);~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0 % 256;assume -2147483648 <= __CS_cs_#t~nondet6 && __CS_cs_#t~nondet6 <= 2147483647; [2020-12-23 11:41:33,345 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 11:41:33,345 INFO L299 CfgBuilder]: Removed 284 assume(true) statements. [2020-12-23 11:41:33,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:41:33 BoogieIcfgContainer [2020-12-23 11:41:33,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 11:41:33,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 11:41:33,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 11:41:33,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 11:41:33,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 11:41:27" (1/3) ... [2020-12-23 11:41:33,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c73593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:41:33, skipping insertion in model container [2020-12-23 11:41:33,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:41:28" (2/3) ... [2020-12-23 11:41:33,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c73593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:41:33, skipping insertion in model container [2020-12-23 11:41:33,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:41:33" (3/3) ... [2020-12-23 11:41:33,358 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_stateful-1.i [2020-12-23 11:41:33,365 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 11:41:33,370 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 11:41:33,393 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 11:41:33,422 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 11:41:33,422 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 11:41:33,422 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 11:41:33,422 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 11:41:33,423 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 11:41:33,423 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 11:41:33,423 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 11:41:33,423 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 11:41:33,448 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states. [2020-12-23 11:41:33,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 11:41:33,460 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:41:33,461 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] [2020-12-23 11:41:33,461 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:41:33,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:41:33,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1735824455, now seen corresponding path program 1 times [2020-12-23 11:41:33,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:41:33,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042132467] [2020-12-23 11:41:33,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:41:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:41:33,774 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 11:41:33,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042132467] [2020-12-23 11:41:33,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:41:33,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:41:33,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999217232] [2020-12-23 11:41:33,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:41:33,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:41:33,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:41:33,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:41:33,804 INFO L87 Difference]: Start difference. First operand 572 states. Second operand 3 states. [2020-12-23 11:41:33,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:41:33,981 INFO L93 Difference]: Finished difference Result 1147 states and 1785 transitions. [2020-12-23 11:41:33,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:41:33,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-12-23 11:41:33,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:41:34,013 INFO L225 Difference]: With dead ends: 1147 [2020-12-23 11:41:34,013 INFO L226 Difference]: Without dead ends: 573 [2020-12-23 11:41:34,019 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 11:41:34,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-12-23 11:41:34,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 569. [2020-12-23 11:41:34,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2020-12-23 11:41:34,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 792 transitions. [2020-12-23 11:41:34,099 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 792 transitions. Word has length 32 [2020-12-23 11:41:34,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:41:34,100 INFO L481 AbstractCegarLoop]: Abstraction has 569 states and 792 transitions. [2020-12-23 11:41:34,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:41:34,100 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 792 transitions. [2020-12-23 11:41:34,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 11:41:34,103 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:41:34,104 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] [2020-12-23 11:41:34,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 11:41:34,104 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:41:34,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:41:34,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1178330563, now seen corresponding path program 1 times [2020-12-23 11:41:34,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:41:34,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909295321] [2020-12-23 11:41:34,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:41:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:41:34,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:41:34,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909295321] [2020-12-23 11:41:34,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:41:34,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:41:34,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098928442] [2020-12-23 11:41:34,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:41:34,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:41:34,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:41:34,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:41:34,262 INFO L87 Difference]: Start difference. First operand 569 states and 792 transitions. Second operand 3 states. [2020-12-23 11:41:34,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:41:34,304 INFO L93 Difference]: Finished difference Result 1137 states and 1584 transitions. [2020-12-23 11:41:34,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:41:34,305 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-12-23 11:41:34,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:41:34,312 INFO L225 Difference]: With dead ends: 1137 [2020-12-23 11:41:34,312 INFO L226 Difference]: Without dead ends: 571 [2020-12-23 11:41:34,316 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 11:41:34,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-12-23 11:41:34,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 570. [2020-12-23 11:41:34,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2020-12-23 11:41:34,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 793 transitions. [2020-12-23 11:41:34,362 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 793 transitions. Word has length 36 [2020-12-23 11:41:34,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:41:34,362 INFO L481 AbstractCegarLoop]: Abstraction has 570 states and 793 transitions. [2020-12-23 11:41:34,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:41:34,362 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 793 transitions. [2020-12-23 11:41:34,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-23 11:41:34,368 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:41:34,368 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] [2020-12-23 11:41:34,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 11:41:34,369 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:41:34,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:41:34,372 INFO L82 PathProgramCache]: Analyzing trace with hash -240206341, now seen corresponding path program 1 times [2020-12-23 11:41:34,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:41:34,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431559353] [2020-12-23 11:41:34,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:41:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:41:34,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:41:34,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431559353] [2020-12-23 11:41:34,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409337373] [2020-12-23 11:41:34,522 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 11:41:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:41:34,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 11:41:34,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 11:41:34,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:41:34,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 11:41:34,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-23 11:41:34,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906848947] [2020-12-23 11:41:34,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:41:34,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:41:34,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:41:34,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:41:34,889 INFO L87 Difference]: Start difference. First operand 570 states and 793 transitions. Second operand 5 states. [2020-12-23 11:41:34,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:41:34,962 INFO L93 Difference]: Finished difference Result 1140 states and 1587 transitions. [2020-12-23 11:41:34,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 11:41:34,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-12-23 11:41:34,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:41:34,967 INFO L225 Difference]: With dead ends: 1140 [2020-12-23 11:41:34,968 INFO L226 Difference]: Without dead ends: 573 [2020-12-23 11:41:34,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:41:34,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-12-23 11:41:34,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 572. [2020-12-23 11:41:34,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2020-12-23 11:41:34,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 795 transitions. [2020-12-23 11:41:34,992 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 795 transitions. Word has length 38 [2020-12-23 11:41:34,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:41:34,993 INFO L481 AbstractCegarLoop]: Abstraction has 572 states and 795 transitions. [2020-12-23 11:41:34,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:41:34,993 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 795 transitions. [2020-12-23 11:41:34,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-23 11:41:34,997 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:41:34,997 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] [2020-12-23 11:41:35,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 11:41:35,213 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:41:35,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:41:35,215 INFO L82 PathProgramCache]: Analyzing trace with hash -645961159, now seen corresponding path program 2 times [2020-12-23 11:41:35,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:41:35,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499512150] [2020-12-23 11:41:35,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:41:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:41:35,370 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 11:41:35,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499512150] [2020-12-23 11:41:35,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473326042] [2020-12-23 11:41:35,371 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 11:41:35,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 11:41:35,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 11:41:35,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 11:41:35,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 11:41:35,745 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-23 11:41:35,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 11:41:35,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2020-12-23 11:41:35,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240630742] [2020-12-23 11:41:35,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 11:41:35,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:41:35,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 11:41:35,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:41:35,749 INFO L87 Difference]: Start difference. First operand 572 states and 795 transitions. Second operand 4 states. [2020-12-23 11:41:35,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:41:35,871 INFO L93 Difference]: Finished difference Result 1044 states and 1449 transitions. [2020-12-23 11:41:35,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 11:41:35,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-12-23 11:41:35,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:41:35,885 INFO L225 Difference]: With dead ends: 1044 [2020-12-23 11:41:35,885 INFO L226 Difference]: Without dead ends: 996 [2020-12-23 11:41:35,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 11:41:35,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2020-12-23 11:41:35,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 993. [2020-12-23 11:41:35,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 993 states. [2020-12-23 11:41:35,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1366 transitions. [2020-12-23 11:41:35,920 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1366 transitions. Word has length 40 [2020-12-23 11:41:35,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:41:35,927 INFO L481 AbstractCegarLoop]: Abstraction has 993 states and 1366 transitions. [2020-12-23 11:41:35,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 11:41:35,927 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1366 transitions. [2020-12-23 11:41:35,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-23 11:41:35,930 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:41:35,930 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] [2020-12-23 11:41:36,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 11:41:36,146 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:41:36,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:41:36,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1459437104, now seen corresponding path program 1 times [2020-12-23 11:41:36,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:41:36,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064394061] [2020-12-23 11:41:36,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:41:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:41:36,322 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 11:41:36,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064394061] [2020-12-23 11:41:36,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907724376] [2020-12-23 11:41:36,323 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 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 11:41:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:41:36,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 11:41:36,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 11:41:36,611 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:41:36,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 11:41:36,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2020-12-23 11:41:36,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397319684] [2020-12-23 11:41:36,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 11:41:36,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:41:36,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 11:41:36,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 11:41:36,614 INFO L87 Difference]: Start difference. First operand 993 states and 1366 transitions. Second operand 7 states. [2020-12-23 11:41:36,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:41:36,787 INFO L93 Difference]: Finished difference Result 1995 states and 2745 transitions. [2020-12-23 11:41:36,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 11:41:36,788 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-12-23 11:41:36,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:41:36,794 INFO L225 Difference]: With dead ends: 1995 [2020-12-23 11:41:36,794 INFO L226 Difference]: Without dead ends: 1005 [2020-12-23 11:41:36,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2020-12-23 11:41:36,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2020-12-23 11:41:36,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 1005. [2020-12-23 11:41:36,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-12-23 11:41:36,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1379 transitions. [2020-12-23 11:41:36,820 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1379 transitions. Word has length 70 [2020-12-23 11:41:36,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:41:36,821 INFO L481 AbstractCegarLoop]: Abstraction has 1005 states and 1379 transitions. [2020-12-23 11:41:36,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 11:41:36,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1379 transitions. [2020-12-23 11:41:36,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-23 11:41:36,823 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:41:36,824 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:41:37,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 11:41:37,038 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:41:37,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:41:37,040 INFO L82 PathProgramCache]: Analyzing trace with hash 209416304, now seen corresponding path program 2 times [2020-12-23 11:41:37,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:41:37,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061903565] [2020-12-23 11:41:37,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:41:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:41:37,303 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-23 11:41:37,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061903565] [2020-12-23 11:41:37,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:41:37,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:41:37,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113794899] [2020-12-23 11:41:37,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 11:41:37,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:41:37,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 11:41:37,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 11:41:37,306 INFO L87 Difference]: Start difference. First operand 1005 states and 1379 transitions. Second operand 4 states. [2020-12-23 11:41:37,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:41:37,561 INFO L93 Difference]: Finished difference Result 2605 states and 3551 transitions. [2020-12-23 11:41:37,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:41:37,563 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-12-23 11:41:37,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:41:37,573 INFO L225 Difference]: With dead ends: 2605 [2020-12-23 11:41:37,573 INFO L226 Difference]: Without dead ends: 1812 [2020-12-23 11:41:37,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:41:37,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2020-12-23 11:41:37,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 932. [2020-12-23 11:41:37,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 932 states. [2020-12-23 11:41:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1277 transitions. [2020-12-23 11:41:37,613 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1277 transitions. Word has length 82 [2020-12-23 11:41:37,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:41:37,614 INFO L481 AbstractCegarLoop]: Abstraction has 932 states and 1277 transitions. [2020-12-23 11:41:37,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 11:41:37,614 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1277 transitions. [2020-12-23 11:41:37,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-23 11:41:37,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:41:37,617 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:41:37,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 11:41:37,617 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:41:37,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:41:37,618 INFO L82 PathProgramCache]: Analyzing trace with hash 2136411760, now seen corresponding path program 1 times [2020-12-23 11:41:37,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:41:37,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286213555] [2020-12-23 11:41:37,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:41:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:41:37,738 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-23 11:41:37,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286213555] [2020-12-23 11:41:37,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:41:37,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:41:37,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163647895] [2020-12-23 11:41:37,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 11:41:37,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:41:37,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 11:41:37,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 11:41:37,741 INFO L87 Difference]: Start difference. First operand 932 states and 1277 transitions. Second operand 4 states. [2020-12-23 11:41:37,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:41:37,976 INFO L93 Difference]: Finished difference Result 2532 states and 3449 transitions. [2020-12-23 11:41:37,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:41:37,977 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-12-23 11:41:37,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:41:37,985 INFO L225 Difference]: With dead ends: 2532 [2020-12-23 11:41:37,986 INFO L226 Difference]: Without dead ends: 1738 [2020-12-23 11:41:37,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:41:37,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2020-12-23 11:41:38,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 858. [2020-12-23 11:41:38,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 858 states. [2020-12-23 11:41:38,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1174 transitions. [2020-12-23 11:41:38,021 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1174 transitions. Word has length 82 [2020-12-23 11:41:38,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:41:38,022 INFO L481 AbstractCegarLoop]: Abstraction has 858 states and 1174 transitions. [2020-12-23 11:41:38,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 11:41:38,022 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1174 transitions. [2020-12-23 11:41:38,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-23 11:41:38,024 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:41:38,024 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:41:38,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 11:41:38,025 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:41:38,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:41:38,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1762070388, now seen corresponding path program 1 times [2020-12-23 11:41:38,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:41:38,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587401588] [2020-12-23 11:41:38,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:41:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:41:38,194 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-23 11:41:38,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587401588] [2020-12-23 11:41:38,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:41:38,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:41:38,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651142954] [2020-12-23 11:41:38,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 11:41:38,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:41:38,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 11:41:38,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 11:41:38,196 INFO L87 Difference]: Start difference. First operand 858 states and 1174 transitions. Second operand 4 states. [2020-12-23 11:41:40,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:41:40,466 INFO L93 Difference]: Finished difference Result 2053 states and 2786 transitions. [2020-12-23 11:41:40,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 11:41:40,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-12-23 11:41:40,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:41:40,477 INFO L225 Difference]: With dead ends: 2053 [2020-12-23 11:41:40,478 INFO L226 Difference]: Without dead ends: 1439 [2020-12-23 11:41:40,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:41:40,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2020-12-23 11:41:40,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 956. [2020-12-23 11:41:40,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 956 states. [2020-12-23 11:41:40,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1313 transitions. [2020-12-23 11:41:40,512 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1313 transitions. Word has length 82 [2020-12-23 11:41:40,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:41:40,512 INFO L481 AbstractCegarLoop]: Abstraction has 956 states and 1313 transitions. [2020-12-23 11:41:40,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 11:41:40,512 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1313 transitions. [2020-12-23 11:41:40,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-23 11:41:40,520 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:41:40,520 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:41:40,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 11:41:40,521 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:41:40,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:41:40,521 INFO L82 PathProgramCache]: Analyzing trace with hash 2050108788, now seen corresponding path program 1 times [2020-12-23 11:41:40,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:41:40,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898564564] [2020-12-23 11:41:40,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:41:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:41:43,217 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-23 11:41:43,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898564564] [2020-12-23 11:41:43,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:41:43,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:41:43,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596275594] [2020-12-23 11:41:43,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 11:41:43,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:41:43,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 11:41:43,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:41:43,220 INFO L87 Difference]: Start difference. First operand 956 states and 1313 transitions. Second operand 6 states. [2020-12-23 11:41:46,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:41:46,615 INFO L93 Difference]: Finished difference Result 1585 states and 2134 transitions. [2020-12-23 11:41:46,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 11:41:46,616 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-12-23 11:41:46,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:41:46,622 INFO L225 Difference]: With dead ends: 1585 [2020-12-23 11:41:46,626 INFO L226 Difference]: Without dead ends: 1147 [2020-12-23 11:41:46,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:41:46,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2020-12-23 11:41:46,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 962. [2020-12-23 11:41:46,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 962 states. [2020-12-23 11:41:46,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1320 transitions. [2020-12-23 11:41:46,661 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1320 transitions. Word has length 82 [2020-12-23 11:41:46,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:41:46,661 INFO L481 AbstractCegarLoop]: Abstraction has 962 states and 1320 transitions. [2020-12-23 11:41:46,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 11:41:46,661 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1320 transitions. [2020-12-23 11:41:46,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-23 11:41:46,663 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:41:46,663 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:41:46,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 11:41:46,664 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:41:46,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:41:46,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1339215096, now seen corresponding path program 1 times [2020-12-23 11:41:46,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:41:46,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470923536] [2020-12-23 11:41:46,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:41:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:41:46,831 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-23 11:41:46,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470923536] [2020-12-23 11:41:46,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:41:46,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:41:46,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013601762] [2020-12-23 11:41:46,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 11:41:46,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:41:46,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 11:41:46,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 11:41:46,839 INFO L87 Difference]: Start difference. First operand 962 states and 1320 transitions. Second operand 4 states. [2020-12-23 11:41:49,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:41:49,112 INFO L93 Difference]: Finished difference Result 1468 states and 1977 transitions. [2020-12-23 11:41:49,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 11:41:49,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-12-23 11:41:49,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:41:49,128 INFO L225 Difference]: With dead ends: 1468 [2020-12-23 11:41:49,128 INFO L226 Difference]: Without dead ends: 1204 [2020-12-23 11:41:49,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:41:49,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2020-12-23 11:41:49,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1068. [2020-12-23 11:41:49,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-12-23 11:41:49,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1465 transitions. [2020-12-23 11:41:49,173 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1465 transitions. Word has length 82 [2020-12-23 11:41:49,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:41:49,174 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1465 transitions. [2020-12-23 11:41:49,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 11:41:49,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1465 transitions. [2020-12-23 11:41:49,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-23 11:41:49,175 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:41:49,176 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:41:49,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 11:41:49,176 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:41:49,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:41:49,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1294822136, now seen corresponding path program 1 times [2020-12-23 11:41:49,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:41:49,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338061845] [2020-12-23 11:41:49,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:41:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:41:50,969 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-12-23 11:41:51,157 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2020-12-23 11:41:51,252 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-23 11:41:51,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338061845] [2020-12-23 11:41:51,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:41:51,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:41:51,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910933660] [2020-12-23 11:41:51,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 11:41:51,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:41:51,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 11:41:51,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:41:51,255 INFO L87 Difference]: Start difference. First operand 1068 states and 1465 transitions. Second operand 6 states. [2020-12-23 11:41:54,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:41:54,363 INFO L93 Difference]: Finished difference Result 1165 states and 1581 transitions. [2020-12-23 11:41:54,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 11:41:54,363 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-12-23 11:41:54,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:41:54,369 INFO L225 Difference]: With dead ends: 1165 [2020-12-23 11:41:54,369 INFO L226 Difference]: Without dead ends: 1062 [2020-12-23 11:41:54,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:41:54,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2020-12-23 11:41:54,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 1062. [2020-12-23 11:41:54,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1062 states. [2020-12-23 11:41:54,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1452 transitions. [2020-12-23 11:41:54,430 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1452 transitions. Word has length 82 [2020-12-23 11:41:54,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:41:54,431 INFO L481 AbstractCegarLoop]: Abstraction has 1062 states and 1452 transitions. [2020-12-23 11:41:54,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 11:41:54,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1452 transitions. [2020-12-23 11:41:54,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 11:41:54,434 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:41:54,434 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:41:54,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 11:41:54,435 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:41:54,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:41:54,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1292701664, now seen corresponding path program 1 times [2020-12-23 11:41:54,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:41:54,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771382219] [2020-12-23 11:41:54,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:41:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:41:54,603 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-23 11:41:54,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771382219] [2020-12-23 11:41:54,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:41:54,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:41:54,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153113648] [2020-12-23 11:41:54,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 11:41:54,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:41:54,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 11:41:54,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 11:41:54,605 INFO L87 Difference]: Start difference. First operand 1062 states and 1452 transitions. Second operand 4 states. [2020-12-23 11:41:54,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:41:54,961 INFO L93 Difference]: Finished difference Result 2310 states and 3147 transitions. [2020-12-23 11:41:54,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 11:41:54,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-23 11:41:54,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:41:54,969 INFO L225 Difference]: With dead ends: 2310 [2020-12-23 11:41:54,969 INFO L226 Difference]: Without dead ends: 1309 [2020-12-23 11:41:54,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 11:41:54,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2020-12-23 11:41:55,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1109. [2020-12-23 11:41:55,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1109 states. [2020-12-23 11:41:55,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1507 transitions. [2020-12-23 11:41:55,015 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1507 transitions. Word has length 105 [2020-12-23 11:41:55,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:41:55,015 INFO L481 AbstractCegarLoop]: Abstraction has 1109 states and 1507 transitions. [2020-12-23 11:41:55,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 11:41:55,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1507 transitions. [2020-12-23 11:41:55,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 11:41:55,018 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:41:55,018 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:41:55,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 11:41:55,019 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:41:55,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:41:55,019 INFO L82 PathProgramCache]: Analyzing trace with hash -2108779294, now seen corresponding path program 1 times [2020-12-23 11:41:55,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:41:55,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944283077] [2020-12-23 11:41:55,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:41:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:41:58,553 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-12-23 11:41:58,754 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-23 11:41:58,947 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-12-23 11:41:59,146 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-12-23 11:41:59,279 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-23 11:41:59,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944283077] [2020-12-23 11:41:59,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:41:59,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-23 11:41:59,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633387217] [2020-12-23 11:41:59,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 11:41:59,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:41:59,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 11:41:59,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-12-23 11:41:59,281 INFO L87 Difference]: Start difference. First operand 1109 states and 1507 transitions. Second operand 11 states. [2020-12-23 11:42:01,820 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-12-23 11:42:02,083 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-12-23 11:42:02,473 WARN L197 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2020-12-23 11:42:07,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:42:07,150 INFO L93 Difference]: Finished difference Result 2183 states and 2976 transitions. [2020-12-23 11:42:07,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 11:42:07,151 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 105 [2020-12-23 11:42:07,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:42:07,159 INFO L225 Difference]: With dead ends: 2183 [2020-12-23 11:42:07,159 INFO L226 Difference]: Without dead ends: 1765 [2020-12-23 11:42:07,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-12-23 11:42:07,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2020-12-23 11:42:07,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1119. [2020-12-23 11:42:07,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1119 states. [2020-12-23 11:42:07,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1520 transitions. [2020-12-23 11:42:07,208 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1520 transitions. Word has length 105 [2020-12-23 11:42:07,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:42:07,209 INFO L481 AbstractCegarLoop]: Abstraction has 1119 states and 1520 transitions. [2020-12-23 11:42:07,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 11:42:07,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1520 transitions. [2020-12-23 11:42:07,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 11:42:07,211 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:42:07,211 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:42:07,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 11:42:07,212 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:42:07,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:42:07,212 INFO L82 PathProgramCache]: Analyzing trace with hash -169617248, now seen corresponding path program 1 times [2020-12-23 11:42:07,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:42:07,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734698197] [2020-12-23 11:42:07,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:42:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:42:10,679 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-23 11:42:10,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734698197] [2020-12-23 11:42:10,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:42:10,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:42:10,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584466160] [2020-12-23 11:42:10,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:42:10,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:42:10,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:42:10,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:42:10,682 INFO L87 Difference]: Start difference. First operand 1119 states and 1520 transitions. Second operand 5 states. [2020-12-23 11:42:12,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:42:12,620 INFO L93 Difference]: Finished difference Result 2772 states and 3729 transitions. [2020-12-23 11:42:12,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 11:42:12,620 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-12-23 11:42:12,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:42:12,628 INFO L225 Difference]: With dead ends: 2772 [2020-12-23 11:42:12,629 INFO L226 Difference]: Without dead ends: 1614 [2020-12-23 11:42:12,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:42:12,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2020-12-23 11:42:12,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1333. [2020-12-23 11:42:12,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1333 states. [2020-12-23 11:42:12,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1699 transitions. [2020-12-23 11:42:12,694 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1699 transitions. Word has length 105 [2020-12-23 11:42:12,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:42:12,695 INFO L481 AbstractCegarLoop]: Abstraction has 1333 states and 1699 transitions. [2020-12-23 11:42:12,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:42:12,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1699 transitions. [2020-12-23 11:42:12,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 11:42:12,698 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:42:12,698 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:42:12,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 11:42:12,698 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:42:12,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:42:12,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1012715608, now seen corresponding path program 1 times [2020-12-23 11:42:12,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:42:12,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923117844] [2020-12-23 11:42:12,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:42:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:42:13,641 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 34 [2020-12-23 11:42:13,814 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-12-23 11:42:13,999 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-12-23 11:42:14,178 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2020-12-23 11:42:14,386 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-23 11:42:14,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923117844] [2020-12-23 11:42:14,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:42:14,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-23 11:42:14,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436778886] [2020-12-23 11:42:14,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 11:42:14,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:42:14,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 11:42:14,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-12-23 11:42:14,388 INFO L87 Difference]: Start difference. First operand 1333 states and 1699 transitions. Second operand 13 states. [2020-12-23 11:42:22,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:42:22,329 INFO L93 Difference]: Finished difference Result 2563 states and 3270 transitions. [2020-12-23 11:42:22,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 11:42:22,331 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 105 [2020-12-23 11:42:22,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:42:22,341 INFO L225 Difference]: With dead ends: 2563 [2020-12-23 11:42:22,341 INFO L226 Difference]: Without dead ends: 2037 [2020-12-23 11:42:22,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2020-12-23 11:42:22,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2020-12-23 11:42:22,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 1333. [2020-12-23 11:42:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1333 states. [2020-12-23 11:42:22,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1698 transitions. [2020-12-23 11:42:22,414 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1698 transitions. Word has length 105 [2020-12-23 11:42:22,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:42:22,415 INFO L481 AbstractCegarLoop]: Abstraction has 1333 states and 1698 transitions. [2020-12-23 11:42:22,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 11:42:22,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1698 transitions. [2020-12-23 11:42:22,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-23 11:42:22,418 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:42:22,418 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:42:22,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 11:42:22,418 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:42:22,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:42:22,419 INFO L82 PathProgramCache]: Analyzing trace with hash 195260161, now seen corresponding path program 1 times [2020-12-23 11:42:22,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:42:22,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814353945] [2020-12-23 11:42:22,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:42:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:42:22,517 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-23 11:42:22,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814353945] [2020-12-23 11:42:22,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:42:22,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:42:22,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008204190] [2020-12-23 11:42:22,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:42:22,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:42:22,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:42:22,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:42:22,520 INFO L87 Difference]: Start difference. First operand 1333 states and 1698 transitions. Second operand 3 states. [2020-12-23 11:42:22,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:42:22,624 INFO L93 Difference]: Finished difference Result 2298 states and 2945 transitions. [2020-12-23 11:42:22,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:42:22,625 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-23 11:42:22,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:42:22,631 INFO L225 Difference]: With dead ends: 2298 [2020-12-23 11:42:22,631 INFO L226 Difference]: Without dead ends: 1344 [2020-12-23 11:42:22,633 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 11:42:22,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2020-12-23 11:42:22,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 1344. [2020-12-23 11:42:22,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1344 states. [2020-12-23 11:42:22,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 1709 transitions. [2020-12-23 11:42:22,685 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 1709 transitions. Word has length 108 [2020-12-23 11:42:22,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:42:22,685 INFO L481 AbstractCegarLoop]: Abstraction has 1344 states and 1709 transitions. [2020-12-23 11:42:22,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:42:22,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 1709 transitions. [2020-12-23 11:42:22,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-23 11:42:22,688 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:42:22,688 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:42:22,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 11:42:22,689 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:42:22,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:42:22,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1176547137, now seen corresponding path program 1 times [2020-12-23 11:42:22,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:42:22,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137455542] [2020-12-23 11:42:22,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:42:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:42:26,112 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2020-12-23 11:42:26,288 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2020-12-23 11:42:26,418 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2020-12-23 11:42:26,583 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2020-12-23 11:42:26,764 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 65 [2020-12-23 11:42:26,963 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 65 [2020-12-23 11:42:27,573 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-23 11:42:27,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137455542] [2020-12-23 11:42:27,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:42:27,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-23 11:42:27,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77258827] [2020-12-23 11:42:27,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 11:42:27,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:42:27,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 11:42:27,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-12-23 11:42:27,576 INFO L87 Difference]: Start difference. First operand 1344 states and 1709 transitions. Second operand 12 states. [2020-12-23 11:42:33,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:42:33,137 INFO L93 Difference]: Finished difference Result 2352 states and 2954 transitions. [2020-12-23 11:42:33,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 11:42:33,138 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-12-23 11:42:33,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:42:33,146 INFO L225 Difference]: With dead ends: 2352 [2020-12-23 11:42:33,146 INFO L226 Difference]: Without dead ends: 1910 [2020-12-23 11:42:33,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-12-23 11:42:33,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2020-12-23 11:42:33,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1344. [2020-12-23 11:42:33,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1344 states. [2020-12-23 11:42:33,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 1706 transitions. [2020-12-23 11:42:33,227 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 1706 transitions. Word has length 108 [2020-12-23 11:42:33,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:42:33,228 INFO L481 AbstractCegarLoop]: Abstraction has 1344 states and 1706 transitions. [2020-12-23 11:42:33,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 11:42:33,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 1706 transitions. [2020-12-23 11:42:33,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-23 11:42:33,231 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:42:33,231 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:42:33,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 11:42:33,232 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:42:33,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:42:33,232 INFO L82 PathProgramCache]: Analyzing trace with hash -312688372, now seen corresponding path program 1 times [2020-12-23 11:42:33,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:42:33,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44966399] [2020-12-23 11:42:33,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:42:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:42:33,779 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-23 11:42:33,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44966399] [2020-12-23 11:42:33,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:42:33,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 11:42:33,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261266634] [2020-12-23 11:42:33,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 11:42:33,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:42:33,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 11:42:33,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-23 11:42:33,781 INFO L87 Difference]: Start difference. First operand 1344 states and 1706 transitions. Second operand 7 states. [2020-12-23 11:42:39,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:42:39,211 INFO L93 Difference]: Finished difference Result 2365 states and 2933 transitions. [2020-12-23 11:42:39,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 11:42:39,213 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-12-23 11:42:39,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:42:39,219 INFO L225 Difference]: With dead ends: 2365 [2020-12-23 11:42:39,219 INFO L226 Difference]: Without dead ends: 1668 [2020-12-23 11:42:39,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-23 11:42:39,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2020-12-23 11:42:39,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1098. [2020-12-23 11:42:39,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1098 states. [2020-12-23 11:42:39,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1379 transitions. [2020-12-23 11:42:39,279 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1379 transitions. Word has length 118 [2020-12-23 11:42:39,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:42:39,279 INFO L481 AbstractCegarLoop]: Abstraction has 1098 states and 1379 transitions. [2020-12-23 11:42:39,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 11:42:39,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1379 transitions. [2020-12-23 11:42:39,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-23 11:42:39,282 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:42:39,282 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:42:39,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 11:42:39,283 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:42:39,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:42:39,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1270539736, now seen corresponding path program 1 times [2020-12-23 11:42:39,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:42:39,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294769144] [2020-12-23 11:42:39,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:42:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:42:39,809 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-23 11:42:39,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294769144] [2020-12-23 11:42:39,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:42:39,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 11:42:39,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10433780] [2020-12-23 11:42:39,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 11:42:39,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:42:39,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 11:42:39,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 11:42:39,811 INFO L87 Difference]: Start difference. First operand 1098 states and 1379 transitions. Second operand 7 states. [2020-12-23 11:42:42,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:42:42,219 INFO L93 Difference]: Finished difference Result 2008 states and 2473 transitions. [2020-12-23 11:42:42,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 11:42:42,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-12-23 11:42:42,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:42:42,228 INFO L225 Difference]: With dead ends: 2008 [2020-12-23 11:42:42,228 INFO L226 Difference]: Without dead ends: 1308 [2020-12-23 11:42:42,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-12-23 11:42:42,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2020-12-23 11:42:42,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 883. [2020-12-23 11:42:42,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-12-23 11:42:42,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1097 transitions. [2020-12-23 11:42:42,276 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1097 transitions. Word has length 119 [2020-12-23 11:42:42,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:42:42,277 INFO L481 AbstractCegarLoop]: Abstraction has 883 states and 1097 transitions. [2020-12-23 11:42:42,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 11:42:42,277 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1097 transitions. [2020-12-23 11:42:42,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-23 11:42:42,279 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:42:42,279 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:42:42,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 11:42:42,280 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:42:42,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:42:42,280 INFO L82 PathProgramCache]: Analyzing trace with hash -766922536, now seen corresponding path program 1 times [2020-12-23 11:42:42,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:42:42,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872577745] [2020-12-23 11:42:42,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:42:45,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:42:46,010 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-23 11:42:46,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872577745] [2020-12-23 11:42:46,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:42:46,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 11:42:46,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394254799] [2020-12-23 11:42:46,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 11:42:46,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:42:46,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 11:42:46,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-23 11:42:46,011 INFO L87 Difference]: Start difference. First operand 883 states and 1097 transitions. Second operand 10 states. [2020-12-23 11:42:49,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:42:49,076 INFO L93 Difference]: Finished difference Result 1065 states and 1307 transitions. [2020-12-23 11:42:49,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 11:42:49,077 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 119 [2020-12-23 11:42:49,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:42:49,083 INFO L225 Difference]: With dead ends: 1065 [2020-12-23 11:42:49,083 INFO L226 Difference]: Without dead ends: 1041 [2020-12-23 11:42:49,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-12-23 11:42:49,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2020-12-23 11:42:49,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 897. [2020-12-23 11:42:49,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2020-12-23 11:42:49,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1114 transitions. [2020-12-23 11:42:49,129 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1114 transitions. Word has length 119 [2020-12-23 11:42:49,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:42:49,130 INFO L481 AbstractCegarLoop]: Abstraction has 897 states and 1114 transitions. [2020-12-23 11:42:49,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 11:42:49,130 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1114 transitions. [2020-12-23 11:42:49,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-23 11:42:49,132 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:42:49,132 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:42:49,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 11:42:49,133 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:42:49,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:42:49,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1511829342, now seen corresponding path program 1 times [2020-12-23 11:42:49,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:42:49,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978064511] [2020-12-23 11:42:49,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:42:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:42:51,702 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-23 11:42:51,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978064511] [2020-12-23 11:42:51,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:42:51,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:42:51,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652639935] [2020-12-23 11:42:51,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 11:42:51,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:42:51,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 11:42:51,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:42:51,704 INFO L87 Difference]: Start difference. First operand 897 states and 1114 transitions. Second operand 6 states. [2020-12-23 11:42:53,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:42:53,194 INFO L93 Difference]: Finished difference Result 1875 states and 2323 transitions. [2020-12-23 11:42:53,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 11:42:53,195 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2020-12-23 11:42:53,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:42:53,199 INFO L225 Difference]: With dead ends: 1875 [2020-12-23 11:42:53,199 INFO L226 Difference]: Without dead ends: 1066 [2020-12-23 11:42:53,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-23 11:42:53,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-12-23 11:42:53,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 953. [2020-12-23 11:42:53,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2020-12-23 11:42:53,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1176 transitions. [2020-12-23 11:42:53,253 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1176 transitions. Word has length 121 [2020-12-23 11:42:53,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:42:53,253 INFO L481 AbstractCegarLoop]: Abstraction has 953 states and 1176 transitions. [2020-12-23 11:42:53,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 11:42:53,253 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1176 transitions. [2020-12-23 11:42:53,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-23 11:42:53,256 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:42:53,256 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:42:53,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-23 11:42:53,256 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:42:53,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:42:53,257 INFO L82 PathProgramCache]: Analyzing trace with hash 329550635, now seen corresponding path program 1 times [2020-12-23 11:42:53,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:42:53,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495511856] [2020-12-23 11:42:53,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:42:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:42:56,755 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-23 11:42:56,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495511856] [2020-12-23 11:42:56,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:42:56,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:42:56,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209484865] [2020-12-23 11:42:56,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 11:42:56,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:42:56,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 11:42:56,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 11:42:56,757 INFO L87 Difference]: Start difference. First operand 953 states and 1176 transitions. Second operand 4 states. [2020-12-23 11:42:57,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:42:57,853 INFO L93 Difference]: Finished difference Result 1833 states and 2245 transitions. [2020-12-23 11:42:57,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 11:42:57,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-12-23 11:42:57,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:42:57,858 INFO L225 Difference]: With dead ends: 1833 [2020-12-23 11:42:57,859 INFO L226 Difference]: Without dead ends: 1063 [2020-12-23 11:42:57,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 11:42:57,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2020-12-23 11:42:57,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1023. [2020-12-23 11:42:57,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2020-12-23 11:42:57,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1246 transitions. [2020-12-23 11:42:57,916 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1246 transitions. Word has length 122 [2020-12-23 11:42:57,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:42:57,916 INFO L481 AbstractCegarLoop]: Abstraction has 1023 states and 1246 transitions. [2020-12-23 11:42:57,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 11:42:57,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1246 transitions. [2020-12-23 11:42:57,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-23 11:42:57,919 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:42:57,919 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:42:57,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-23 11:42:57,919 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:42:57,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:42:57,920 INFO L82 PathProgramCache]: Analyzing trace with hash 952290027, now seen corresponding path program 1 times [2020-12-23 11:42:57,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:42:57,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352796510] [2020-12-23 11:42:57,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:43:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:43:06,659 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 84 [2020-12-23 11:43:07,112 WARN L197 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 103 [2020-12-23 11:43:07,669 WARN L197 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 118 [2020-12-23 11:43:08,281 WARN L197 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 118 [2020-12-23 11:43:08,888 WARN L197 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 112 [2020-12-23 11:43:09,377 WARN L197 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 112 [2020-12-23 11:43:09,961 WARN L197 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 95 [2020-12-23 11:43:10,600 WARN L197 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 102 [2020-12-23 11:43:11,504 WARN L197 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 117 [2020-12-23 11:43:12,112 WARN L197 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 109 [2020-12-23 11:43:13,113 WARN L197 SmtUtils]: Spent 886.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 111 [2020-12-23 11:43:13,925 WARN L197 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 124 [2020-12-23 11:43:14,756 WARN L197 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 124 [2020-12-23 11:43:15,256 WARN L197 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 96 [2020-12-23 11:43:15,835 WARN L197 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 102 [2020-12-23 11:43:16,321 WARN L197 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 92 [2020-12-23 11:43:16,961 WARN L197 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 92 [2020-12-23 11:43:17,359 WARN L197 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 88 [2020-12-23 11:43:17,742 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 81 [2020-12-23 11:43:18,145 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 71 [2020-12-23 11:43:19,030 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-23 11:43:19,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352796510] [2020-12-23 11:43:19,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:43:19,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-12-23 11:43:19,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109615379] [2020-12-23 11:43:19,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-23 11:43:19,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:43:19,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-23 11:43:19,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2020-12-23 11:43:19,033 INFO L87 Difference]: Start difference. First operand 1023 states and 1246 transitions. Second operand 25 states. [2020-12-23 11:43:19,460 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-12-23 11:43:37,842 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-12-23 11:43:38,223 WARN L197 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-12-23 11:43:39,235 WARN L197 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 154 [2020-12-23 11:43:39,699 WARN L197 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-12-23 11:43:40,996 WARN L197 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 132 [2020-12-23 11:43:41,604 WARN L197 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 109 [2020-12-23 11:43:42,241 WARN L197 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 108 [2020-12-23 11:43:42,966 WARN L197 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 127 [2020-12-23 11:43:43,789 WARN L197 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 119 [2020-12-23 11:43:44,595 WARN L197 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-12-23 11:43:45,777 WARN L197 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 131 [2020-12-23 11:43:46,658 WARN L197 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 138 [2020-12-23 11:43:47,441 WARN L197 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 141 [2020-12-23 11:43:48,223 WARN L197 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 135 [2020-12-23 11:43:49,009 WARN L197 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 134 [2020-12-23 11:43:50,089 WARN L197 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 146 [2020-12-23 11:43:51,232 WARN L197 SmtUtils]: Spent 820.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 155 [2020-12-23 11:43:52,251 WARN L197 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 147 [2020-12-23 11:43:53,134 WARN L197 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 129 [2020-12-23 11:43:58,269 WARN L197 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 147 [2020-12-23 11:43:58,967 WARN L197 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 148 [2020-12-23 11:44:01,399 WARN L197 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 154 [2020-12-23 11:44:01,733 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-12-23 11:44:02,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:44:02,892 INFO L93 Difference]: Finished difference Result 1492 states and 1771 transitions. [2020-12-23 11:44:02,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-23 11:44:02,893 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 122 [2020-12-23 11:44:02,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:44:02,896 INFO L225 Difference]: With dead ends: 1492 [2020-12-23 11:44:02,896 INFO L226 Difference]: Without dead ends: 1380 [2020-12-23 11:44:02,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=358, Invalid=1994, Unknown=0, NotChecked=0, Total=2352 [2020-12-23 11:44:02,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2020-12-23 11:44:02,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1206. [2020-12-23 11:44:02,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1206 states. [2020-12-23 11:44:02,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1460 transitions. [2020-12-23 11:44:02,984 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1460 transitions. Word has length 122 [2020-12-23 11:44:02,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:44:02,984 INFO L481 AbstractCegarLoop]: Abstraction has 1206 states and 1460 transitions. [2020-12-23 11:44:02,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-23 11:44:02,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1460 transitions. [2020-12-23 11:44:02,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-23 11:44:02,988 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:44:02,988 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:44:02,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-23 11:44:02,989 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:44:02,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:44:02,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1165010027, now seen corresponding path program 1 times [2020-12-23 11:44:02,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:44:02,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438775461] [2020-12-23 11:44:02,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:44:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:44:11,867 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2020-12-23 11:44:12,291 WARN L197 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 114 [2020-12-23 11:44:12,766 WARN L197 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 126 [2020-12-23 11:44:13,225 WARN L197 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 122 [2020-12-23 11:44:13,729 WARN L197 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 111 [2020-12-23 11:44:14,205 WARN L197 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 115 [2020-12-23 11:44:14,661 WARN L197 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 109 [2020-12-23 11:44:15,047 WARN L197 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 90 [2020-12-23 11:44:15,604 WARN L197 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 99 [2020-12-23 11:44:16,172 WARN L197 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 104 [2020-12-23 11:44:17,096 WARN L197 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 113 [2020-12-23 11:44:17,672 WARN L197 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 109 [2020-12-23 11:44:18,307 WARN L197 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 114 [2020-12-23 11:44:18,875 WARN L197 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 113 [2020-12-23 11:44:19,672 WARN L197 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 110 [2020-12-23 11:44:20,206 WARN L197 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 103 [2020-12-23 11:44:20,860 WARN L197 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 101 [2020-12-23 11:44:21,337 WARN L197 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 104 [2020-12-23 11:44:21,806 WARN L197 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 98 [2020-12-23 11:44:22,366 WARN L197 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 78 [2020-12-23 11:44:22,640 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2020-12-23 11:44:22,866 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-12-23 11:44:23,445 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-23 11:44:23,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438775461] [2020-12-23 11:44:23,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:44:23,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-12-23 11:44:23,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638040850] [2020-12-23 11:44:23,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-23 11:44:23,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:44:23,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-23 11:44:23,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2020-12-23 11:44:23,447 INFO L87 Difference]: Start difference. First operand 1206 states and 1460 transitions. Second operand 25 states. [2020-12-23 11:44:24,195 WARN L197 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 131 [2020-12-23 11:44:48,682 WARN L197 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 143 [2020-12-23 11:44:49,436 WARN L197 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 150 [2020-12-23 11:44:50,584 WARN L197 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 155 [2020-12-23 11:44:51,427 WARN L197 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 152 [2020-12-23 11:44:52,184 WARN L197 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 161 [2020-12-23 11:44:53,004 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-12-23 11:44:53,834 WARN L197 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 114 [2020-12-23 11:44:54,376 WARN L197 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 111 [2020-12-23 11:44:55,009 WARN L197 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 118 [2020-12-23 11:44:55,621 WARN L197 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 116 [2020-12-23 11:44:56,330 WARN L197 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 104 [2020-12-23 11:44:57,540 WARN L197 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 110 [2020-12-23 11:44:58,948 WARN L197 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 111 [2020-12-23 11:44:59,839 WARN L197 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 120 [2020-12-23 11:45:00,721 WARN L197 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 119 [2020-12-23 11:45:01,551 WARN L197 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 113 [2020-12-23 11:45:02,910 WARN L197 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 129 [2020-12-23 11:45:03,994 WARN L197 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 134 [2020-12-23 11:45:05,168 WARN L197 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 135 [2020-12-23 11:45:06,165 WARN L197 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 134 [2020-12-23 11:45:07,186 WARN L197 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 104 [2020-12-23 11:45:08,101 WARN L197 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 115 [2020-12-23 11:45:10,352 WARN L197 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 119 [2020-12-23 11:45:13,284 WARN L197 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 127 [2020-12-23 11:45:15,798 WARN L197 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 118 [2020-12-23 11:45:17,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:45:17,417 INFO L93 Difference]: Finished difference Result 1390 states and 1668 transitions. [2020-12-23 11:45:17,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-23 11:45:17,419 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 122 [2020-12-23 11:45:17,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:45:17,421 INFO L225 Difference]: With dead ends: 1390 [2020-12-23 11:45:17,421 INFO L226 Difference]: Without dead ends: 1254 [2020-12-23 11:45:17,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 8 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=353, Invalid=2197, Unknown=0, NotChecked=0, Total=2550 [2020-12-23 11:45:17,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2020-12-23 11:45:17,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1174. [2020-12-23 11:45:17,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1174 states. [2020-12-23 11:45:17,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1407 transitions. [2020-12-23 11:45:17,506 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1407 transitions. Word has length 122 [2020-12-23 11:45:17,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:45:17,506 INFO L481 AbstractCegarLoop]: Abstraction has 1174 states and 1407 transitions. [2020-12-23 11:45:17,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-23 11:45:17,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1407 transitions. [2020-12-23 11:45:17,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 11:45:17,509 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:45:17,509 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:45:17,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-23 11:45:17,509 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:45:17,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:45:17,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1981432932, now seen corresponding path program 1 times [2020-12-23 11:45:17,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:45:17,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155775974] [2020-12-23 11:45:17,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY