/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/float-benchs/mea8000.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:01:30,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:01:30,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:01:30,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:01:30,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:01:30,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:01:30,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:01:30,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:01:30,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:01:30,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:01:30,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:01:30,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:01:30,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:01:30,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:01:30,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:01:30,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:01:30,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:01:30,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:01:30,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:01:30,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:01:30,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:01:30,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:01:30,498 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:01:30,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:01:30,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 16:01:30,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 16:01:30,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 16:01:30,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 16:01:30,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 16:01:30,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 16:01:30,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 16:01:30,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 16:01:30,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 16:01:30,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 16:01:30,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 16:01:30,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 16:01:30,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 16:01:30,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 16:01:30,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:01:30,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:01:30,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:01:30,531 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 16:01:30,574 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:01:30,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:01:30,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:01:30,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:01:30,580 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:01:30,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:01:30,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:01:30,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:01:30,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:01:30,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:01:30,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:01:30,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:01:30,583 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:01:30,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:01:30,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:01:30,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:01:30,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:01:30,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:01:30,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:01:30,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:01:30,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:01:30,584 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:01:30,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:01:30,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:01:30,585 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:01:30,585 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:01:30,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:01:31,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:01:31,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:01:31,024 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:01:31,025 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:01:31,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/mea8000.c [2021-01-06 16:01:31,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/16162f193/1ee5fc9ae733403cb9710917f0149712/FLAGce223215e [2021-01-06 16:01:31,816 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:01:31,816 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-benchs/mea8000.c [2021-01-06 16:01:31,833 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/16162f193/1ee5fc9ae733403cb9710917f0149712/FLAGce223215e [2021-01-06 16:01:32,075 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/16162f193/1ee5fc9ae733403cb9710917f0149712 [2021-01-06 16:01:32,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:01:32,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:01:32,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:01:32,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:01:32,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:01:32,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:01:32" (1/1) ... [2021-01-06 16:01:32,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@389b1557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:32, skipping insertion in model container [2021-01-06 16:01:32,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:01:32" (1/1) ... [2021-01-06 16:01:32,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:01:32,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 16:01:32,333 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/float-benchs/mea8000.c[649,662] left hand side expression in assignment: lhs: VariableLHS[~m_phi~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_cont~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_roe~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_state~0,GLOBAL] left hand side expression in assignment: lhs: StructLHS[ArrayLHS[VariableLHS[~m_f~0,GLOBAL],[IdentifierExpression[~i~0,]]],last_output] left hand side expression in assignment: lhs: StructLHS[ArrayLHS[VariableLHS[~m_f~0,GLOBAL],[IdentifierExpression[~i~0,]]],output] left hand side expression in assignment: lhs: VariableLHS[~timer_enabled~0,GLOBAL] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~m_cos_table~0,GLOBAL],[IdentifierExpression[~i~1,]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~m_exp_table~0,GLOBAL],[IdentifierExpression[~i~1,]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~m_exp2_table~0,GLOBAL],[IdentifierExpression[~i~1,]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~m_noise_table~0,GLOBAL],[IdentifierExpression[~i~2,]]] left hand side expression in assignment: lhs: StructLHS[ArrayLHS[VariableLHS[~m_f~0,GLOBAL],[IdentifierExpression[~i,]]],last_output] left hand side expression in assignment: lhs: StructLHS[ArrayLHS[VariableLHS[~m_f~0,GLOBAL],[IdentifierExpression[~i,]]],output] left hand side expression in assignment: lhs: VariableLHS[~out~0,] left hand side expression in assignment: lhs: VariableLHS[~out~0,] left hand side expression in assignment: lhs: VariableLHS[~out~0,] left hand side expression in assignment: lhs: VariableLHS[~out~0,] left hand side expression in assignment: lhs: VariableLHS[~out~0,] left hand side expression in assignment: lhs: VariableLHS[~m_last_pitch~0,GLOBAL] left hand side expression in assignment: lhs: StructLHS[ArrayLHS[VariableLHS[~m_f~0,GLOBAL],[IdentifierExpression[~i~4,]]],last_bw] left hand side expression in assignment: lhs: StructLHS[ArrayLHS[VariableLHS[~m_f~0,GLOBAL],[IdentifierExpression[~i~4,]]],last_fm] left hand side expression in assignment: lhs: VariableLHS[~m_last_ampl~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_noise~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_pitch~0,GLOBAL] left hand side expression in assignment: lhs: StructLHS[ArrayLHS[VariableLHS[~m_f~0,GLOBAL],[IntegerLiteral[0]]],bw] left hand side expression in assignment: lhs: StructLHS[ArrayLHS[VariableLHS[~m_f~0,GLOBAL],[IntegerLiteral[1]]],bw] left hand side expression in assignment: lhs: StructLHS[ArrayLHS[VariableLHS[~m_f~0,GLOBAL],[IntegerLiteral[2]]],bw] left hand side expression in assignment: lhs: StructLHS[ArrayLHS[VariableLHS[~m_f~0,GLOBAL],[IntegerLiteral[3]]],bw] left hand side expression in assignment: lhs: StructLHS[ArrayLHS[VariableLHS[~m_f~0,GLOBAL],[IntegerLiteral[3]]],fm] left hand side expression in assignment: lhs: StructLHS[ArrayLHS[VariableLHS[~m_f~0,GLOBAL],[IntegerLiteral[2]]],fm] left hand side expression in assignment: lhs: StructLHS[ArrayLHS[VariableLHS[~m_f~0,GLOBAL],[IntegerLiteral[1]]],fm] left hand side expression in assignment: lhs: StructLHS[ArrayLHS[VariableLHS[~m_f~0,GLOBAL],[IntegerLiteral[0]]],fm] left hand side expression in assignment: lhs: VariableLHS[~m_ampl~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_framelog~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_framelength~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_bufpos~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_framepos~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~timer_enabled~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_state~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~timer_enabled~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_lastsample~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_sample~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_ampl~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_state~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_pitch~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_state~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_bufpos~0,GLOBAL] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~m_buf~0,GLOBAL],[BinaryExpression[ARITHMOD,IdentifierExpression[~m_bufpos~0,GLOBAL],IntegerLiteral[256]]]] left hand side expression in assignment: lhs: VariableLHS[~m_last_pitch~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_last_pitch~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_ampl~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_state~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_cont~0,GLOBAL] ----Is the binary operator a bitwise operator? true left hand side expression in assignment: lhs: VariableLHS[~m_roe~0,GLOBAL] ----Is the binary operator a bitwise operator? true [2021-01-06 16:01:32,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:01:32,531 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 16:01:32,554 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/float-benchs/mea8000.c[649,662] left hand side expression in assignment: lhs: VariableLHS[~m_phi~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_cont~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_roe~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_state~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[40],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],offset],BinaryExpression[ARITHMUL,IntegerLiteral[48],IdentifierExpression[~i~0,]]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],offset],BinaryExpression[ARITHMUL,IntegerLiteral[48],IdentifierExpression[~i~0,]]]]]] left hand side expression in assignment: lhs: VariableLHS[~timer_enabled~0,GLOBAL] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~m_cos_table~0,GLOBAL],[IdentifierExpression[~i~1,]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~m_exp_table~0,GLOBAL],[IdentifierExpression[~i~1,]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~m_exp2_table~0,GLOBAL],[IdentifierExpression[~i~1,]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#m_noise_table~0,GLOBAL],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#m_noise_table~0,GLOBAL],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~2,]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[40],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],offset],BinaryExpression[ARITHMUL,IntegerLiteral[48],IdentifierExpression[~i,]]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],offset],BinaryExpression[ARITHMUL,IntegerLiteral[48],IdentifierExpression[~i,]]]]]] left hand side expression in assignment: lhs: VariableLHS[~out~0,] left hand side expression in assignment: lhs: VariableLHS[~out~0,] left hand side expression in assignment: lhs: VariableLHS[~out~0,] left hand side expression in assignment: lhs: VariableLHS[~out~0,] left hand side expression in assignment: lhs: VariableLHS[~out~0,] left hand side expression in assignment: lhs: VariableLHS[~m_last_pitch~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],offset],BinaryExpression[ARITHMUL,IntegerLiteral[48],IdentifierExpression[~i~4,]]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],offset],BinaryExpression[ARITHMUL,IntegerLiteral[48],IdentifierExpression[~i~4,]]]]]] left hand side expression in assignment: lhs: VariableLHS[~m_last_ampl~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_noise~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_pitch~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[64],StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[112],StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[160],StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[144],StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[96],StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],base],BinaryExpression[ARITHPLUS,IntegerLiteral[48],StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],base],StructAccessExpression[IdentifierExpression[~#m_f~0,GLOBAL],offset]]] left hand side expression in assignment: lhs: VariableLHS[~m_ampl~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_framelog~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_framelength~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_bufpos~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_framepos~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~timer_enabled~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_state~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~timer_enabled~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_lastsample~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_sample~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_ampl~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_state~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_pitch~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_state~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_bufpos~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#m_buf~0,GLOBAL],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#m_buf~0,GLOBAL],offset],BinaryExpression[ARITHMOD,IdentifierExpression[~m_bufpos~0,GLOBAL],IntegerLiteral[256]]]]] left hand side expression in assignment: lhs: VariableLHS[~m_last_pitch~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_last_pitch~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_ampl~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_state~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m_cont~0,GLOBAL] ----Is the binary operator a bitwise operator? true left hand side expression in assignment: lhs: VariableLHS[~m_roe~0,GLOBAL] ----Is the binary operator a bitwise operator? true [2021-01-06 16:01:32,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:01:32,728 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:01:32,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:32 WrapperNode [2021-01-06 16:01:32,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:01:32,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:01:32,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:01:32,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:01:32,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:32" (1/1) ... [2021-01-06 16:01:32,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:32" (1/1) ... [2021-01-06 16:01:32,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:01:32,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:01:32,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:01:32,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:01:32,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:32" (1/1) ... [2021-01-06 16:01:32,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:32" (1/1) ... [2021-01-06 16:01:32,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:32" (1/1) ... [2021-01-06 16:01:32,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:32" (1/1) ... [2021-01-06 16:01:32,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:32" (1/1) ... [2021-01-06 16:01:32,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:32" (1/1) ... [2021-01-06 16:01:32,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:32" (1/1) ... [2021-01-06 16:01:32,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:01:32,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:01:32,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:01:32,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:01:32,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:01:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:01:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-01-06 16:01:33,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 16:01:33,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-01-06 16:01:33,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 16:01:33,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_char [2021-01-06 16:01:33,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:01:33,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:01:33,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:01:34,547 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:01:34,547 INFO L299 CfgBuilder]: Removed 121 assume(true) statements. [2021-01-06 16:01:34,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:01:34 BoogieIcfgContainer [2021-01-06 16:01:34,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:01:34,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:01:34,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:01:34,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:01:34,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:01:32" (1/3) ... [2021-01-06 16:01:34,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516c4393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:01:34, skipping insertion in model container [2021-01-06 16:01:34,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:32" (2/3) ... [2021-01-06 16:01:34,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516c4393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:01:34, skipping insertion in model container [2021-01-06 16:01:34,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:01:34" (3/3) ... [2021-01-06 16:01:34,560 INFO L111 eAbstractionObserver]: Analyzing ICFG mea8000.c [2021-01-06 16:01:34,568 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:01:34,574 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2021-01-06 16:01:34,601 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-01-06 16:01:34,638 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:01:34,638 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:01:34,638 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:01:34,639 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:01:34,639 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:01:34,639 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:01:34,639 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:01:34,639 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:01:34,661 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states. [2021-01-06 16:01:34,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 16:01:34,669 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:34,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:34,670 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:34,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:34,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1623000979, now seen corresponding path program 1 times [2021-01-06 16:01:34,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:34,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699528905] [2021-01-06 16:01:34,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:35,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:01:35,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699528905] [2021-01-06 16:01:35,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:01:35,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 16:01:35,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220561813] [2021-01-06 16:01:35,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 16:01:35,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:01:35,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 16:01:35,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:01:35,113 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 2 states. [2021-01-06 16:01:35,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:01:35,182 INFO L93 Difference]: Finished difference Result 256 states and 385 transitions. [2021-01-06 16:01:35,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 16:01:35,186 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2021-01-06 16:01:35,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:01:35,204 INFO L225 Difference]: With dead ends: 256 [2021-01-06 16:01:35,204 INFO L226 Difference]: Without dead ends: 127 [2021-01-06 16:01:35,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:01:35,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-01-06 16:01:35,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-01-06 16:01:35,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2021-01-06 16:01:35,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 167 transitions. [2021-01-06 16:01:35,272 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 167 transitions. Word has length 13 [2021-01-06 16:01:35,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:01:35,274 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 167 transitions. [2021-01-06 16:01:35,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 16:01:35,275 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 167 transitions. [2021-01-06 16:01:35,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 16:01:35,277 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:35,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:35,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:01:35,278 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:35,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:35,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1750220142, now seen corresponding path program 1 times [2021-01-06 16:01:35,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:35,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978192896] [2021-01-06 16:01:35,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:35,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:01:35,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978192896] [2021-01-06 16:01:35,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:01:35,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 16:01:35,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222510736] [2021-01-06 16:01:35,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 16:01:35,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:01:35,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 16:01:35,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:01:35,433 INFO L87 Difference]: Start difference. First operand 127 states and 167 transitions. Second operand 3 states. [2021-01-06 16:01:35,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:01:35,487 INFO L93 Difference]: Finished difference Result 252 states and 332 transitions. [2021-01-06 16:01:35,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 16:01:35,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2021-01-06 16:01:35,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:01:35,494 INFO L225 Difference]: With dead ends: 252 [2021-01-06 16:01:35,495 INFO L226 Difference]: Without dead ends: 142 [2021-01-06 16:01:35,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:01:35,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-01-06 16:01:35,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 128. [2021-01-06 16:01:35,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2021-01-06 16:01:35,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 168 transitions. [2021-01-06 16:01:35,518 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 168 transitions. Word has length 13 [2021-01-06 16:01:35,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:01:35,519 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 168 transitions. [2021-01-06 16:01:35,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 16:01:35,519 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 168 transitions. [2021-01-06 16:01:35,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-06 16:01:35,520 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:35,520 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] [2021-01-06 16:01:35,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 16:01:35,523 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:35,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:35,529 INFO L82 PathProgramCache]: Analyzing trace with hash -751698468, now seen corresponding path program 1 times [2021-01-06 16:01:35,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:35,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415654528] [2021-01-06 16:01:35,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:35,586 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 16:01:35,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1444817190] [2021-01-06 16:01:35,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:35,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 2 conjunts are in the unsatisfiable core [2021-01-06 16:01:35,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:01:35,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 16:01:35,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415654528] [2021-01-06 16:01:35,873 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 16:01:35,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444817190] [2021-01-06 16:01:35,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:01:35,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 16:01:35,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975887405] [2021-01-06 16:01:35,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 16:01:35,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:01:35,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 16:01:35,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:01:35,877 INFO L87 Difference]: Start difference. First operand 128 states and 168 transitions. Second operand 3 states. [2021-01-06 16:01:35,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:01:35,903 INFO L93 Difference]: Finished difference Result 237 states and 314 transitions. [2021-01-06 16:01:35,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 16:01:35,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2021-01-06 16:01:35,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:01:35,905 INFO L225 Difference]: With dead ends: 237 [2021-01-06 16:01:35,905 INFO L226 Difference]: Without dead ends: 131 [2021-01-06 16:01:35,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:01:35,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-01-06 16:01:35,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2021-01-06 16:01:35,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2021-01-06 16:01:35,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 169 transitions. [2021-01-06 16:01:35,920 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 169 transitions. Word has length 26 [2021-01-06 16:01:35,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:01:35,920 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 169 transitions. [2021-01-06 16:01:35,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 16:01:35,920 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 169 transitions. [2021-01-06 16:01:35,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 16:01:35,948 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:35,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:36,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-06 16:01:36,150 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:36,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:36,151 INFO L82 PathProgramCache]: Analyzing trace with hash -48834505, now seen corresponding path program 1 times [2021-01-06 16:01:36,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:36,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577490174] [2021-01-06 16:01:36,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:36,183 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 16:01:36,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1273203485] [2021-01-06 16:01:36,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:36,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 16:01:36,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:01:36,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 16:01:36,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577490174] [2021-01-06 16:01:36,428 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 16:01:36,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273203485] [2021-01-06 16:01:36,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:01:36,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 16:01:36,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842590514] [2021-01-06 16:01:36,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 16:01:36,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:01:36,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 16:01:36,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:01:36,430 INFO L87 Difference]: Start difference. First operand 129 states and 169 transitions. Second operand 3 states. [2021-01-06 16:01:36,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:01:36,459 INFO L93 Difference]: Finished difference Result 279 states and 379 transitions. [2021-01-06 16:01:36,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 16:01:36,460 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2021-01-06 16:01:36,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:01:36,462 INFO L225 Difference]: With dead ends: 279 [2021-01-06 16:01:36,462 INFO L226 Difference]: Without dead ends: 173 [2021-01-06 16:01:36,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:01:36,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-01-06 16:01:36,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 160. [2021-01-06 16:01:36,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2021-01-06 16:01:36,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 221 transitions. [2021-01-06 16:01:36,481 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 221 transitions. Word has length 29 [2021-01-06 16:01:36,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:01:36,481 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 221 transitions. [2021-01-06 16:01:36,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 16:01:36,482 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 221 transitions. [2021-01-06 16:01:36,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 16:01:36,483 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:36,483 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] [2021-01-06 16:01:36,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:36,685 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:36,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:36,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1185271855, now seen corresponding path program 1 times [2021-01-06 16:01:36,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:36,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923650132] [2021-01-06 16:01:36,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:36,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 16:01:36,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923650132] [2021-01-06 16:01:36,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314298312] [2021-01-06 16:01:36,802 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 [2021-01-06 16:01:37,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:37,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 16:01:37,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:01:37,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 16:01:37,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:01:37,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-01-06 16:01:37,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796129681] [2021-01-06 16:01:37,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 16:01:37,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:01:37,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 16:01:37,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:01:37,106 INFO L87 Difference]: Start difference. First operand 160 states and 221 transitions. Second operand 5 states. [2021-01-06 16:01:37,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:01:37,154 INFO L93 Difference]: Finished difference Result 331 states and 455 transitions. [2021-01-06 16:01:37,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:01:37,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2021-01-06 16:01:37,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:01:37,156 INFO L225 Difference]: With dead ends: 331 [2021-01-06 16:01:37,156 INFO L226 Difference]: Without dead ends: 189 [2021-01-06 16:01:37,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:01:37,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-01-06 16:01:37,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 175. [2021-01-06 16:01:37,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2021-01-06 16:01:37,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 238 transitions. [2021-01-06 16:01:37,175 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 238 transitions. Word has length 31 [2021-01-06 16:01:37,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:01:37,175 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 238 transitions. [2021-01-06 16:01:37,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 16:01:37,175 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 238 transitions. [2021-01-06 16:01:37,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-06 16:01:37,179 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:37,179 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:37,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:37,395 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:37,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:37,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1403382939, now seen corresponding path program 2 times [2021-01-06 16:01:37,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:37,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731313870] [2021-01-06 16:01:37,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-06 16:01:37,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731313870] [2021-01-06 16:01:37,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832590213] [2021-01-06 16:01:37,530 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:37,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-06 16:01:37,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:01:37,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-06 16:01:37,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:01:37,816 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-01-06 16:01:37,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-06 16:01:37,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-01-06 16:01:37,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505345349] [2021-01-06 16:01:37,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 16:01:37,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:01:37,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 16:01:37,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:01:37,830 INFO L87 Difference]: Start difference. First operand 175 states and 238 transitions. Second operand 3 states. [2021-01-06 16:01:37,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:01:37,882 INFO L93 Difference]: Finished difference Result 248 states and 357 transitions. [2021-01-06 16:01:37,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 16:01:37,883 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2021-01-06 16:01:37,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:01:37,885 INFO L225 Difference]: With dead ends: 248 [2021-01-06 16:01:37,885 INFO L226 Difference]: Without dead ends: 244 [2021-01-06 16:01:37,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:01:37,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-01-06 16:01:37,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 171. [2021-01-06 16:01:37,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2021-01-06 16:01:37,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 234 transitions. [2021-01-06 16:01:37,900 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 234 transitions. Word has length 44 [2021-01-06 16:01:37,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:01:37,902 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 234 transitions. [2021-01-06 16:01:37,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 16:01:37,902 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 234 transitions. [2021-01-06 16:01:37,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-01-06 16:01:37,906 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:37,907 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:38,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:38,120 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:38,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:38,121 INFO L82 PathProgramCache]: Analyzing trace with hash -421129522, now seen corresponding path program 1 times [2021-01-06 16:01:38,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:38,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3538623] [2021-01-06 16:01:38,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:38,156 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 16:01:38,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [683270578] [2021-01-06 16:01:38,156 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:38,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 2 conjunts are in the unsatisfiable core [2021-01-06 16:01:38,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:01:38,419 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-01-06 16:01:38,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3538623] [2021-01-06 16:01:38,420 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 16:01:38,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683270578] [2021-01-06 16:01:38,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:01:38,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 16:01:38,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435345489] [2021-01-06 16:01:38,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 16:01:38,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:01:38,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 16:01:38,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:01:38,423 INFO L87 Difference]: Start difference. First operand 171 states and 234 transitions. Second operand 3 states. [2021-01-06 16:01:38,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:01:38,500 INFO L93 Difference]: Finished difference Result 335 states and 476 transitions. [2021-01-06 16:01:38,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 16:01:38,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2021-01-06 16:01:38,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:01:38,502 INFO L225 Difference]: With dead ends: 335 [2021-01-06 16:01:38,502 INFO L226 Difference]: Without dead ends: 202 [2021-01-06 16:01:38,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:01:38,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-01-06 16:01:38,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2021-01-06 16:01:38,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2021-01-06 16:01:38,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 285 transitions. [2021-01-06 16:01:38,512 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 285 transitions. Word has length 57 [2021-01-06 16:01:38,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:01:38,512 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 285 transitions. [2021-01-06 16:01:38,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 16:01:38,513 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 285 transitions. [2021-01-06 16:01:38,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-01-06 16:01:38,514 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:38,514 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:38,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-06 16:01:38,729 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:38,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:38,730 INFO L82 PathProgramCache]: Analyzing trace with hash -197872668, now seen corresponding path program 1 times [2021-01-06 16:01:38,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:38,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937749866] [2021-01-06 16:01:38,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:38,840 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-01-06 16:01:38,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937749866] [2021-01-06 16:01:38,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887608717] [2021-01-06 16:01:38,840 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:39,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 2 conjunts are in the unsatisfiable core [2021-01-06 16:01:39,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:01:39,153 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-01-06 16:01:39,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-06 16:01:39,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-01-06 16:01:39,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651576484] [2021-01-06 16:01:39,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 16:01:39,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:01:39,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 16:01:39,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:01:39,159 INFO L87 Difference]: Start difference. First operand 202 states and 285 transitions. Second operand 3 states. [2021-01-06 16:01:39,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:01:39,212 INFO L93 Difference]: Finished difference Result 370 states and 532 transitions. [2021-01-06 16:01:39,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 16:01:39,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2021-01-06 16:01:39,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:01:39,221 INFO L225 Difference]: With dead ends: 370 [2021-01-06 16:01:39,221 INFO L226 Difference]: Without dead ends: 206 [2021-01-06 16:01:39,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:01:39,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-01-06 16:01:39,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 204. [2021-01-06 16:01:39,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2021-01-06 16:01:39,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 287 transitions. [2021-01-06 16:01:39,236 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 287 transitions. Word has length 65 [2021-01-06 16:01:39,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:01:39,236 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 287 transitions. [2021-01-06 16:01:39,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 16:01:39,236 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 287 transitions. [2021-01-06 16:01:39,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 16:01:39,237 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:39,238 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:39,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:39,441 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:39,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:39,443 INFO L82 PathProgramCache]: Analyzing trace with hash 27837154, now seen corresponding path program 1 times [2021-01-06 16:01:39,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:39,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705322967] [2021-01-06 16:01:39,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:39,556 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-01-06 16:01:39,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705322967] [2021-01-06 16:01:39,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539598716] [2021-01-06 16:01:39,557 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:39,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:39,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 16:01:39,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:01:39,892 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-01-06 16:01:39,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:01:39,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2021-01-06 16:01:39,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103955673] [2021-01-06 16:01:39,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 16:01:39,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:01:39,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 16:01:39,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 16:01:39,896 INFO L87 Difference]: Start difference. First operand 204 states and 287 transitions. Second operand 7 states. [2021-01-06 16:01:39,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:01:39,984 INFO L93 Difference]: Finished difference Result 409 states and 576 transitions. [2021-01-06 16:01:39,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 16:01:39,985 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 67 [2021-01-06 16:01:39,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:01:39,987 INFO L225 Difference]: With dead ends: 409 [2021-01-06 16:01:39,987 INFO L226 Difference]: Without dead ends: 238 [2021-01-06 16:01:39,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 16:01:39,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-01-06 16:01:39,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 222. [2021-01-06 16:01:39,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2021-01-06 16:01:40,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 307 transitions. [2021-01-06 16:01:40,001 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 307 transitions. Word has length 67 [2021-01-06 16:01:40,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:01:40,001 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 307 transitions. [2021-01-06 16:01:40,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 16:01:40,002 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 307 transitions. [2021-01-06 16:01:40,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-01-06 16:01:40,004 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:40,004 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:40,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:40,218 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:40,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:40,220 INFO L82 PathProgramCache]: Analyzing trace with hash 481697543, now seen corresponding path program 2 times [2021-01-06 16:01:40,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:40,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570712905] [2021-01-06 16:01:40,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:40,273 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 16:01:40,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1546056500] [2021-01-06 16:01:40,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:40,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-06 16:01:40,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:01:40,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 16:01:40,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:01:40,705 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-01-06 16:01:40,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570712905] [2021-01-06 16:01:40,706 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 16:01:40,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546056500] [2021-01-06 16:01:40,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:01:40,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:01:40,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565410012] [2021-01-06 16:01:40,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 16:01:40,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:01:40,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 16:01:40,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:01:40,709 INFO L87 Difference]: Start difference. First operand 222 states and 307 transitions. Second operand 5 states. [2021-01-06 16:01:40,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:01:40,868 INFO L93 Difference]: Finished difference Result 716 states and 1081 transitions. [2021-01-06 16:01:40,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 16:01:40,869 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2021-01-06 16:01:40,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:01:40,875 INFO L225 Difference]: With dead ends: 716 [2021-01-06 16:01:40,875 INFO L226 Difference]: Without dead ends: 712 [2021-01-06 16:01:40,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 16:01:40,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-01-06 16:01:40,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 376. [2021-01-06 16:01:40,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2021-01-06 16:01:40,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 542 transitions. [2021-01-06 16:01:40,897 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 542 transitions. Word has length 83 [2021-01-06 16:01:40,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:01:40,897 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 542 transitions. [2021-01-06 16:01:40,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 16:01:40,898 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 542 transitions. [2021-01-06 16:01:40,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-01-06 16:01:40,899 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:40,899 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:41,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-06 16:01:41,114 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:41,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:41,115 INFO L82 PathProgramCache]: Analyzing trace with hash 481562495, now seen corresponding path program 1 times [2021-01-06 16:01:41,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:41,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124244359] [2021-01-06 16:01:41,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:41,236 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-01-06 16:01:41,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124244359] [2021-01-06 16:01:41,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108258799] [2021-01-06 16:01:41,237 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:41,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 16:01:41,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:01:41,554 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-01-06 16:01:41,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:01:41,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 8 [2021-01-06 16:01:41,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260709409] [2021-01-06 16:01:41,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 16:01:41,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:01:41,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 16:01:41,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-01-06 16:01:41,556 INFO L87 Difference]: Start difference. First operand 376 states and 542 transitions. Second operand 8 states. [2021-01-06 16:01:41,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:01:41,679 INFO L93 Difference]: Finished difference Result 745 states and 1079 transitions. [2021-01-06 16:01:41,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 16:01:41,680 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2021-01-06 16:01:41,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:01:41,682 INFO L225 Difference]: With dead ends: 745 [2021-01-06 16:01:41,683 INFO L226 Difference]: Without dead ends: 417 [2021-01-06 16:01:41,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-01-06 16:01:41,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-01-06 16:01:41,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 399. [2021-01-06 16:01:41,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2021-01-06 16:01:41,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 567 transitions. [2021-01-06 16:01:41,701 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 567 transitions. Word has length 83 [2021-01-06 16:01:41,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:01:41,701 INFO L481 AbstractCegarLoop]: Abstraction has 399 states and 567 transitions. [2021-01-06 16:01:41,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 16:01:41,702 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 567 transitions. [2021-01-06 16:01:41,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-01-06 16:01:41,703 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:41,703 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:41,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:41,917 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:41,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:41,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1364466937, now seen corresponding path program 2 times [2021-01-06 16:01:41,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:41,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591267034] [2021-01-06 16:01:41,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:42,056 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-01-06 16:01:42,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591267034] [2021-01-06 16:01:42,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006414220] [2021-01-06 16:01:42,057 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:42,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 16:01:42,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:01:42,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 16:01:42,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:01:42,468 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-01-06 16:01:42,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:01:42,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-01-06 16:01:42,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392980479] [2021-01-06 16:01:42,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 16:01:42,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:01:42,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 16:01:42,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-01-06 16:01:42,470 INFO L87 Difference]: Start difference. First operand 399 states and 567 transitions. Second operand 8 states. [2021-01-06 16:01:42,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:01:42,547 INFO L93 Difference]: Finished difference Result 764 states and 1096 transitions. [2021-01-06 16:01:42,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 16:01:42,547 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2021-01-06 16:01:42,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:01:42,550 INFO L225 Difference]: With dead ends: 764 [2021-01-06 16:01:42,551 INFO L226 Difference]: Without dead ends: 428 [2021-01-06 16:01:42,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-01-06 16:01:42,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-01-06 16:01:42,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 414. [2021-01-06 16:01:42,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2021-01-06 16:01:42,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 584 transitions. [2021-01-06 16:01:42,568 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 584 transitions. Word has length 98 [2021-01-06 16:01:42,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:01:42,569 INFO L481 AbstractCegarLoop]: Abstraction has 414 states and 584 transitions. [2021-01-06 16:01:42,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 16:01:42,569 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 584 transitions. [2021-01-06 16:01:42,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-06 16:01:42,570 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:42,570 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:42,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:42,785 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:42,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:42,787 INFO L82 PathProgramCache]: Analyzing trace with hash -123745795, now seen corresponding path program 3 times [2021-01-06 16:01:42,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:42,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746572763] [2021-01-06 16:01:42,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-01-06 16:01:42,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746572763] [2021-01-06 16:01:42,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459511450] [2021-01-06 16:01:42,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:43,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 16:01:43,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:01:43,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 16:01:43,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:01:43,558 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-01-06 16:01:43,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:01:43,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2021-01-06 16:01:43,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212454636] [2021-01-06 16:01:43,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 16:01:43,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:01:43,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 16:01:43,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-01-06 16:01:43,561 INFO L87 Difference]: Start difference. First operand 414 states and 584 transitions. Second operand 11 states. [2021-01-06 16:01:43,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:01:43,694 INFO L93 Difference]: Finished difference Result 784 states and 1119 transitions. [2021-01-06 16:01:43,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 16:01:43,695 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 111 [2021-01-06 16:01:43,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:01:43,697 INFO L225 Difference]: With dead ends: 784 [2021-01-06 16:01:43,698 INFO L226 Difference]: Without dead ends: 448 [2021-01-06 16:01:43,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-01-06 16:01:43,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-01-06 16:01:43,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 432. [2021-01-06 16:01:43,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2021-01-06 16:01:43,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 604 transitions. [2021-01-06 16:01:43,716 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 604 transitions. Word has length 111 [2021-01-06 16:01:43,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:01:43,717 INFO L481 AbstractCegarLoop]: Abstraction has 432 states and 604 transitions. [2021-01-06 16:01:43,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 16:01:43,717 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 604 transitions. [2021-01-06 16:01:43,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-01-06 16:01:43,718 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:43,718 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:43,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-06 16:01:43,932 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:43,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:43,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1987637000, now seen corresponding path program 4 times [2021-01-06 16:01:43,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:43,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169428686] [2021-01-06 16:01:43,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:44,089 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-01-06 16:01:44,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169428686] [2021-01-06 16:01:44,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80289543] [2021-01-06 16:01:44,089 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:44,251 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 16:01:44,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:01:44,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 16:01:44,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:01:44,452 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2021-01-06 16:01:44,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:01:44,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2021-01-06 16:01:44,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598046951] [2021-01-06 16:01:44,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 16:01:44,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:01:44,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 16:01:44,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-01-06 16:01:44,455 INFO L87 Difference]: Start difference. First operand 432 states and 604 transitions. Second operand 12 states. [2021-01-06 16:01:44,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:01:44,615 INFO L93 Difference]: Finished difference Result 812 states and 1152 transitions. [2021-01-06 16:01:44,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 16:01:44,616 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 127 [2021-01-06 16:01:44,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:01:44,619 INFO L225 Difference]: With dead ends: 812 [2021-01-06 16:01:44,619 INFO L226 Difference]: Without dead ends: 473 [2021-01-06 16:01:44,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-01-06 16:01:44,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-01-06 16:01:44,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 455. [2021-01-06 16:01:44,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2021-01-06 16:01:44,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 629 transitions. [2021-01-06 16:01:44,639 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 629 transitions. Word has length 127 [2021-01-06 16:01:44,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:01:44,640 INFO L481 AbstractCegarLoop]: Abstraction has 455 states and 629 transitions. [2021-01-06 16:01:44,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 16:01:44,640 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 629 transitions. [2021-01-06 16:01:44,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-01-06 16:01:44,642 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:44,642 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:44,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 16:01:44,855 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:44,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:44,856 INFO L82 PathProgramCache]: Analyzing trace with hash 50275136, now seen corresponding path program 5 times [2021-01-06 16:01:44,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:44,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543398615] [2021-01-06 16:01:44,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:45,033 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-01-06 16:01:45,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543398615] [2021-01-06 16:01:45,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537362328] [2021-01-06 16:01:45,034 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:45,372 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-01-06 16:01:45,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:01:45,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 16:01:45,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:01:45,590 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-01-06 16:01:45,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:01:45,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2021-01-06 16:01:45,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961808036] [2021-01-06 16:01:45,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 16:01:45,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:01:45,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 16:01:45,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-01-06 16:01:45,592 INFO L87 Difference]: Start difference. First operand 455 states and 629 transitions. Second operand 14 states. [2021-01-06 16:01:45,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:01:45,778 INFO L93 Difference]: Finished difference Result 839 states and 1181 transitions. [2021-01-06 16:01:45,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 16:01:45,779 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 142 [2021-01-06 16:01:45,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:01:45,782 INFO L225 Difference]: With dead ends: 839 [2021-01-06 16:01:45,782 INFO L226 Difference]: Without dead ends: 492 [2021-01-06 16:01:45,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-01-06 16:01:45,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-01-06 16:01:45,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 478. [2021-01-06 16:01:45,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2021-01-06 16:01:45,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 654 transitions. [2021-01-06 16:01:45,803 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 654 transitions. Word has length 142 [2021-01-06 16:01:45,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:01:45,803 INFO L481 AbstractCegarLoop]: Abstraction has 478 states and 654 transitions. [2021-01-06 16:01:45,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 16:01:45,803 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 654 transitions. [2021-01-06 16:01:45,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-01-06 16:01:45,805 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:45,806 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:46,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-06 16:01:46,019 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:46,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:46,020 INFO L82 PathProgramCache]: Analyzing trace with hash 163656116, now seen corresponding path program 6 times [2021-01-06 16:01:46,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:46,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384635340] [2021-01-06 16:01:46,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:46,217 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 0 proven. 372 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-01-06 16:01:46,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384635340] [2021-01-06 16:01:46,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933513842] [2021-01-06 16:01:46,218 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:47,139 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-01-06 16:01:47,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:01:47,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 16:01:47,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:01:47,354 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-01-06 16:01:47,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-06 16:01:47,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2021-01-06 16:01:47,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739066060] [2021-01-06 16:01:47,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:01:47,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:01:47,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:01:47,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-01-06 16:01:47,357 INFO L87 Difference]: Start difference. First operand 478 states and 654 transitions. Second operand 4 states. [2021-01-06 16:01:47,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:01:47,579 INFO L93 Difference]: Finished difference Result 1448 states and 2090 transitions. [2021-01-06 16:01:47,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:01:47,580 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2021-01-06 16:01:47,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:01:47,586 INFO L225 Difference]: With dead ends: 1448 [2021-01-06 16:01:47,587 INFO L226 Difference]: Without dead ends: 1104 [2021-01-06 16:01:47,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-01-06 16:01:47,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2021-01-06 16:01:47,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 1080. [2021-01-06 16:01:47,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1080 states. [2021-01-06 16:01:47,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1556 transitions. [2021-01-06 16:01:47,633 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1556 transitions. Word has length 157 [2021-01-06 16:01:47,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:01:47,634 INFO L481 AbstractCegarLoop]: Abstraction has 1080 states and 1556 transitions. [2021-01-06 16:01:47,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:01:47,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1556 transitions. [2021-01-06 16:01:47,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-01-06 16:01:47,636 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:47,637 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:47,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:47,851 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:47,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:47,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1672867707, now seen corresponding path program 1 times [2021-01-06 16:01:47,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:47,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260858906] [2021-01-06 16:01:47,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:48,075 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 372 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-01-06 16:01:48,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260858906] [2021-01-06 16:01:48,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131301944] [2021-01-06 16:01:48,076 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:48,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-06 16:01:48,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:01:48,606 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 372 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-01-06 16:01:48,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:01:48,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-01-06 16:01:48,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8965370] [2021-01-06 16:01:48,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 16:01:48,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:01:48,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 16:01:48,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-01-06 16:01:48,609 INFO L87 Difference]: Start difference. First operand 1080 states and 1556 transitions. Second operand 12 states. [2021-01-06 16:01:48,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:01:48,751 INFO L93 Difference]: Finished difference Result 2066 states and 3006 transitions. [2021-01-06 16:01:48,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 16:01:48,752 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 167 [2021-01-06 16:01:48,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:01:48,758 INFO L225 Difference]: With dead ends: 2066 [2021-01-06 16:01:48,758 INFO L226 Difference]: Without dead ends: 1109 [2021-01-06 16:01:48,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-01-06 16:01:48,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2021-01-06 16:01:48,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1095. [2021-01-06 16:01:48,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1095 states. [2021-01-06 16:01:48,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1573 transitions. [2021-01-06 16:01:48,805 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1573 transitions. Word has length 167 [2021-01-06 16:01:48,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:01:48,806 INFO L481 AbstractCegarLoop]: Abstraction has 1095 states and 1573 transitions. [2021-01-06 16:01:48,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 16:01:48,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1573 transitions. [2021-01-06 16:01:48,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-01-06 16:01:48,808 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:48,809 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:49,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-06 16:01:49,024 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:49,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:49,025 INFO L82 PathProgramCache]: Analyzing trace with hash -391986353, now seen corresponding path program 2 times [2021-01-06 16:01:49,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:49,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178778041] [2021-01-06 16:01:49,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:49,378 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-01-06 16:01:49,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178778041] [2021-01-06 16:01:49,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100480111] [2021-01-06 16:01:49,379 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:49,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 16:01:49,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:01:49,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 16:01:49,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:01:50,058 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-01-06 16:01:50,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:01:50,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-01-06 16:01:50,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897686660] [2021-01-06 16:01:50,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 16:01:50,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:01:50,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 16:01:50,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-01-06 16:01:50,060 INFO L87 Difference]: Start difference. First operand 1095 states and 1573 transitions. Second operand 13 states. [2021-01-06 16:01:50,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:01:50,203 INFO L93 Difference]: Finished difference Result 2081 states and 3023 transitions. [2021-01-06 16:01:50,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 16:01:50,204 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 180 [2021-01-06 16:01:50,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:01:50,211 INFO L225 Difference]: With dead ends: 2081 [2021-01-06 16:01:50,211 INFO L226 Difference]: Without dead ends: 1124 [2021-01-06 16:01:50,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-01-06 16:01:50,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2021-01-06 16:01:50,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1110. [2021-01-06 16:01:50,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1110 states. [2021-01-06 16:01:50,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1590 transitions. [2021-01-06 16:01:50,262 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1590 transitions. Word has length 180 [2021-01-06 16:01:50,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:01:50,263 INFO L481 AbstractCegarLoop]: Abstraction has 1110 states and 1590 transitions. [2021-01-06 16:01:50,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 16:01:50,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1590 transitions. [2021-01-06 16:01:50,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-01-06 16:01:50,266 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:50,266 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:50,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-06 16:01:50,480 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:50,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:50,481 INFO L82 PathProgramCache]: Analyzing trace with hash -629380923, now seen corresponding path program 3 times [2021-01-06 16:01:50,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:50,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193095804] [2021-01-06 16:01:50,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:50,762 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-01-06 16:01:50,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193095804] [2021-01-06 16:01:50,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589920956] [2021-01-06 16:01:50,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:56,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-06 16:01:56,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:01:56,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 16:01:56,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:01:56,744 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2021-01-06 16:01:56,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:01:56,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6] total 17 [2021-01-06 16:01:56,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610221950] [2021-01-06 16:01:56,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 16:01:56,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:01:56,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 16:01:56,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-01-06 16:01:56,746 INFO L87 Difference]: Start difference. First operand 1110 states and 1590 transitions. Second operand 17 states. [2021-01-06 16:01:56,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:01:56,958 INFO L93 Difference]: Finished difference Result 2101 states and 3046 transitions. [2021-01-06 16:01:56,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 16:01:56,959 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 193 [2021-01-06 16:01:56,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:01:56,965 INFO L225 Difference]: With dead ends: 2101 [2021-01-06 16:01:56,965 INFO L226 Difference]: Without dead ends: 1144 [2021-01-06 16:01:56,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-01-06 16:01:56,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2021-01-06 16:01:57,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 1128. [2021-01-06 16:01:57,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1128 states. [2021-01-06 16:01:57,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1610 transitions. [2021-01-06 16:01:57,016 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1610 transitions. Word has length 193 [2021-01-06 16:01:57,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:01:57,017 INFO L481 AbstractCegarLoop]: Abstraction has 1128 states and 1610 transitions. [2021-01-06 16:01:57,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 16:01:57,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1610 transitions. [2021-01-06 16:01:57,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-01-06 16:01:57,020 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:57,020 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:57,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:57,221 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:57,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:57,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1822037206, now seen corresponding path program 4 times [2021-01-06 16:01:57,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:57,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786035168] [2021-01-06 16:01:57,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:57,495 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 0 proven. 726 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-01-06 16:01:57,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786035168] [2021-01-06 16:01:57,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685013608] [2021-01-06 16:01:57,496 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:57,855 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 16:01:57,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:01:57,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 1003 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-06 16:01:57,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:01:58,130 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 0 proven. 726 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-01-06 16:01:58,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:01:58,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-01-06 16:01:58,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79699354] [2021-01-06 16:01:58,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 16:01:58,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:01:58,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 16:01:58,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-01-06 16:01:58,133 INFO L87 Difference]: Start difference. First operand 1128 states and 1610 transitions. Second operand 15 states. [2021-01-06 16:01:58,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:01:58,301 INFO L93 Difference]: Finished difference Result 2117 states and 3063 transitions. [2021-01-06 16:01:58,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 16:01:58,301 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 209 [2021-01-06 16:01:58,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:01:58,307 INFO L225 Difference]: With dead ends: 2117 [2021-01-06 16:01:58,308 INFO L226 Difference]: Without dead ends: 1157 [2021-01-06 16:01:58,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-01-06 16:01:58,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2021-01-06 16:01:58,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1143. [2021-01-06 16:01:58,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1143 states. [2021-01-06 16:01:58,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1627 transitions. [2021-01-06 16:01:58,356 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1627 transitions. Word has length 209 [2021-01-06 16:01:58,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:01:58,356 INFO L481 AbstractCegarLoop]: Abstraction has 1143 states and 1627 transitions. [2021-01-06 16:01:58,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 16:01:58,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1627 transitions. [2021-01-06 16:01:58,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-01-06 16:01:58,359 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:58,360 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:58,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:58,576 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:58,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:58,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1449230708, now seen corresponding path program 5 times [2021-01-06 16:01:58,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:58,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752225531] [2021-01-06 16:01:58,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:01:58,895 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-01-06 16:01:58,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752225531] [2021-01-06 16:01:58,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178281685] [2021-01-06 16:01:58,895 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:01:59,597 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-01-06 16:01:59,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:01:59,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 16:01:59,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:01:59,852 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 908 trivial. 0 not checked. [2021-01-06 16:01:59,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:01:59,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5] total 18 [2021-01-06 16:01:59,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211727594] [2021-01-06 16:01:59,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-06 16:01:59,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:01:59,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-06 16:01:59,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2021-01-06 16:01:59,854 INFO L87 Difference]: Start difference. First operand 1143 states and 1627 transitions. Second operand 18 states. [2021-01-06 16:02:00,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:00,596 INFO L93 Difference]: Finished difference Result 2472 states and 3564 transitions. [2021-01-06 16:02:00,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-06 16:02:00,598 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 222 [2021-01-06 16:02:00,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:00,608 INFO L225 Difference]: With dead ends: 2472 [2021-01-06 16:02:00,608 INFO L226 Difference]: Without dead ends: 1512 [2021-01-06 16:02:00,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=319, Invalid=611, Unknown=0, NotChecked=0, Total=930 [2021-01-06 16:02:00,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2021-01-06 16:02:00,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1462. [2021-01-06 16:02:00,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1462 states. [2021-01-06 16:02:00,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 2098 transitions. [2021-01-06 16:02:00,682 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 2098 transitions. Word has length 222 [2021-01-06 16:02:00,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:00,683 INFO L481 AbstractCegarLoop]: Abstraction has 1462 states and 2098 transitions. [2021-01-06 16:02:00,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-06 16:02:00,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 2098 transitions. [2021-01-06 16:02:00,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-01-06 16:02:00,687 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:00,688 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:00,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:00,902 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:00,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:00,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1268209989, now seen corresponding path program 6 times [2021-01-06 16:02:00,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:00,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135600062] [2021-01-06 16:02:00,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:01,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1131 backedges. 0 proven. 1027 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-01-06 16:02:01,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135600062] [2021-01-06 16:02:01,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980947217] [2021-01-06 16:02:01,283 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:06,060 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-01-06 16:02:06,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:06,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 16:02:06,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:06,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1131 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1109 trivial. 0 not checked. [2021-01-06 16:02:06,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:06,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 21 [2021-01-06 16:02:06,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118360997] [2021-01-06 16:02:06,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-06 16:02:06,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:06,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-06 16:02:06,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2021-01-06 16:02:06,412 INFO L87 Difference]: Start difference. First operand 1462 states and 2098 transitions. Second operand 21 states. [2021-01-06 16:02:06,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:06,688 INFO L93 Difference]: Finished difference Result 2760 states and 4011 transitions. [2021-01-06 16:02:06,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-06 16:02:06,689 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 245 [2021-01-06 16:02:06,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:06,697 INFO L225 Difference]: With dead ends: 2760 [2021-01-06 16:02:06,698 INFO L226 Difference]: Without dead ends: 1496 [2021-01-06 16:02:06,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2021-01-06 16:02:06,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-01-06 16:02:06,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1480. [2021-01-06 16:02:06,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1480 states. [2021-01-06 16:02:06,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 2118 transitions. [2021-01-06 16:02:06,751 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 2118 transitions. Word has length 245 [2021-01-06 16:02:06,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:06,751 INFO L481 AbstractCegarLoop]: Abstraction has 1480 states and 2118 transitions. [2021-01-06 16:02:06,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-06 16:02:06,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 2118 transitions. [2021-01-06 16:02:06,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-01-06 16:02:06,756 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:06,756 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:06,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-06 16:02:06,967 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:06,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:06,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1416348790, now seen corresponding path program 7 times [2021-01-06 16:02:06,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:06,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547585220] [2021-01-06 16:02:06,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:07,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 0 proven. 1197 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-01-06 16:02:07,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547585220] [2021-01-06 16:02:07,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724362075] [2021-01-06 16:02:07,433 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:07,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-06 16:02:07,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:08,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 0 proven. 1197 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-01-06 16:02:08,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:08,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-01-06 16:02:08,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501856537] [2021-01-06 16:02:08,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-06 16:02:08,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:08,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-06 16:02:08,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-01-06 16:02:08,109 INFO L87 Difference]: Start difference. First operand 1480 states and 2118 transitions. Second operand 18 states. [2021-01-06 16:02:08,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:08,325 INFO L93 Difference]: Finished difference Result 2776 states and 4028 transitions. [2021-01-06 16:02:08,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 16:02:08,325 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 261 [2021-01-06 16:02:08,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:08,333 INFO L225 Difference]: With dead ends: 2776 [2021-01-06 16:02:08,334 INFO L226 Difference]: Without dead ends: 1509 [2021-01-06 16:02:08,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-01-06 16:02:08,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2021-01-06 16:02:08,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1495. [2021-01-06 16:02:08,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1495 states. [2021-01-06 16:02:08,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 2135 transitions. [2021-01-06 16:02:08,390 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 2135 transitions. Word has length 261 [2021-01-06 16:02:08,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:08,390 INFO L481 AbstractCegarLoop]: Abstraction has 1495 states and 2135 transitions. [2021-01-06 16:02:08,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-06 16:02:08,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 2135 transitions. [2021-01-06 16:02:08,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-01-06 16:02:08,394 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:08,395 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:08,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-01-06 16:02:08,611 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:08,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:08,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1457498560, now seen corresponding path program 8 times [2021-01-06 16:02:08,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:08,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924889673] [2021-01-06 16:02:08,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:09,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1497 backedges. 0 proven. 1380 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-01-06 16:02:09,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924889673] [2021-01-06 16:02:09,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976513635] [2021-01-06 16:02:09,053 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:09,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 16:02:09,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:09,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 16:02:09,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:09,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1497 backedges. 0 proven. 1380 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-01-06 16:02:09,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:09,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-01-06 16:02:09,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206054987] [2021-01-06 16:02:09,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-06 16:02:09,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:09,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-06 16:02:09,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-01-06 16:02:09,814 INFO L87 Difference]: Start difference. First operand 1495 states and 2135 transitions. Second operand 19 states. [2021-01-06 16:02:10,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:10,021 INFO L93 Difference]: Finished difference Result 2791 states and 4045 transitions. [2021-01-06 16:02:10,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-06 16:02:10,022 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 274 [2021-01-06 16:02:10,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:10,030 INFO L225 Difference]: With dead ends: 2791 [2021-01-06 16:02:10,031 INFO L226 Difference]: Without dead ends: 1524 [2021-01-06 16:02:10,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-01-06 16:02:10,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2021-01-06 16:02:10,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1510. [2021-01-06 16:02:10,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1510 states. [2021-01-06 16:02:10,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 2152 transitions. [2021-01-06 16:02:10,116 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 2152 transitions. Word has length 274 [2021-01-06 16:02:10,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:10,116 INFO L481 AbstractCegarLoop]: Abstraction has 1510 states and 2152 transitions. [2021-01-06 16:02:10,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-01-06 16:02:10,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 2152 transitions. [2021-01-06 16:02:10,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-01-06 16:02:10,120 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:10,120 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:10,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:10,334 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:10,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:10,335 INFO L82 PathProgramCache]: Analyzing trace with hash -691786570, now seen corresponding path program 9 times [2021-01-06 16:02:10,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:10,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925095667] [2021-01-06 16:02:10,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:10,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 0 proven. 1576 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-01-06 16:02:10,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925095667] [2021-01-06 16:02:10,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021114059] [2021-01-06 16:02:10,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:12,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-01-06 16:02:12,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:12,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-06 16:02:12,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:13,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 36 proven. 30 refuted. 0 times theorem prover too weak. 1627 trivial. 0 not checked. [2021-01-06 16:02:13,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:13,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 6] total 23 [2021-01-06 16:02:13,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260926785] [2021-01-06 16:02:13,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-06 16:02:13,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:13,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-06 16:02:13,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2021-01-06 16:02:13,325 INFO L87 Difference]: Start difference. First operand 1510 states and 2152 transitions. Second operand 23 states. [2021-01-06 16:02:14,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:14,369 INFO L93 Difference]: Finished difference Result 3158 states and 4552 transitions. [2021-01-06 16:02:14,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-06 16:02:14,370 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 287 [2021-01-06 16:02:14,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:14,379 INFO L225 Difference]: With dead ends: 3158 [2021-01-06 16:02:14,380 INFO L226 Difference]: Without dead ends: 1891 [2021-01-06 16:02:14,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=519, Invalid=1041, Unknown=0, NotChecked=0, Total=1560 [2021-01-06 16:02:14,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2021-01-06 16:02:14,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1829. [2021-01-06 16:02:14,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1829 states. [2021-01-06 16:02:14,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2623 transitions. [2021-01-06 16:02:14,456 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2623 transitions. Word has length 287 [2021-01-06 16:02:14,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:14,456 INFO L481 AbstractCegarLoop]: Abstraction has 1829 states and 2623 transitions. [2021-01-06 16:02:14,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-01-06 16:02:14,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2623 transitions. [2021-01-06 16:02:14,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-01-06 16:02:14,459 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:14,459 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:14,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-01-06 16:02:14,674 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:14,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:14,674 INFO L82 PathProgramCache]: Analyzing trace with hash -947832495, now seen corresponding path program 10 times [2021-01-06 16:02:14,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:14,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052864404] [2021-01-06 16:02:14,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:15,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1943 backedges. 0 proven. 1785 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-01-06 16:02:15,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052864404] [2021-01-06 16:02:15,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583542880] [2021-01-06 16:02:15,170 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:15,664 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 16:02:15,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:15,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 1280 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 16:02:15,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:16,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1943 backedges. 0 proven. 1785 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-01-06 16:02:16,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:16,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-01-06 16:02:16,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383041290] [2021-01-06 16:02:16,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-06 16:02:16,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:16,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-06 16:02:16,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-01-06 16:02:16,030 INFO L87 Difference]: Start difference. First operand 1829 states and 2623 transitions. Second operand 21 states. [2021-01-06 16:02:16,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:16,275 INFO L93 Difference]: Finished difference Result 3429 states and 4987 transitions. [2021-01-06 16:02:16,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-06 16:02:16,276 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 310 [2021-01-06 16:02:16,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:16,285 INFO L225 Difference]: With dead ends: 3429 [2021-01-06 16:02:16,286 INFO L226 Difference]: Without dead ends: 1858 [2021-01-06 16:02:16,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-01-06 16:02:16,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2021-01-06 16:02:16,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1844. [2021-01-06 16:02:16,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1844 states. [2021-01-06 16:02:16,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 2640 transitions. [2021-01-06 16:02:16,350 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 2640 transitions. Word has length 310 [2021-01-06 16:02:16,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:16,351 INFO L481 AbstractCegarLoop]: Abstraction has 1844 states and 2640 transitions. [2021-01-06 16:02:16,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-06 16:02:16,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 2640 transitions. [2021-01-06 16:02:16,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2021-01-06 16:02:16,354 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:16,354 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:16,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:16,569 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:16,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:16,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1108474183, now seen corresponding path program 11 times [2021-01-06 16:02:16,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:16,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928970873] [2021-01-06 16:02:16,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:17,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2165 backedges. 0 proven. 2007 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-01-06 16:02:17,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928970873] [2021-01-06 16:02:17,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37526842] [2021-01-06 16:02:17,125 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:02:47,662 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-01-06 16:02:47,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:02:47,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 16:02:47,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:02:48,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2165 backedges. 0 proven. 2007 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-01-06 16:02:48,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:02:48,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-01-06 16:02:48,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164436554] [2021-01-06 16:02:48,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-06 16:02:48,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:02:48,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-06 16:02:48,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-01-06 16:02:48,095 INFO L87 Difference]: Start difference. First operand 1844 states and 2640 transitions. Second operand 22 states. [2021-01-06 16:02:48,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:02:48,319 INFO L93 Difference]: Finished difference Result 3444 states and 5004 transitions. [2021-01-06 16:02:48,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-06 16:02:48,319 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 323 [2021-01-06 16:02:48,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:02:48,327 INFO L225 Difference]: With dead ends: 3444 [2021-01-06 16:02:48,327 INFO L226 Difference]: Without dead ends: 1873 [2021-01-06 16:02:48,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-01-06 16:02:48,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2021-01-06 16:02:48,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1859. [2021-01-06 16:02:48,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1859 states. [2021-01-06 16:02:48,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2657 transitions. [2021-01-06 16:02:48,412 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2657 transitions. Word has length 323 [2021-01-06 16:02:48,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:02:48,412 INFO L481 AbstractCegarLoop]: Abstraction has 1859 states and 2657 transitions. [2021-01-06 16:02:48,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-06 16:02:48,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2657 transitions. [2021-01-06 16:02:48,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-01-06 16:02:48,415 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:02:48,415 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:02:48,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-06 16:02:48,616 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:02:48,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:02:48,617 INFO L82 PathProgramCache]: Analyzing trace with hash -166766319, now seen corresponding path program 12 times [2021-01-06 16:02:48,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:02:48,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203897775] [2021-01-06 16:02:48,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:02:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:02:49,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2400 backedges. 0 proven. 2242 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-01-06 16:02:49,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203897775] [2021-01-06 16:02:49,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963282436] [2021-01-06 16:02:49,187 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:02,198 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-01-06 16:03:02,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:03:02,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 16:03:02,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:03:02,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2400 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 2365 trivial. 0 not checked. [2021-01-06 16:03:02,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:03:02,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 8] total 28 [2021-01-06 16:03:02,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433025380] [2021-01-06 16:03:02,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-01-06 16:03:02,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:03:02,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-01-06 16:03:02,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=498, Unknown=0, NotChecked=0, Total=756 [2021-01-06 16:03:02,740 INFO L87 Difference]: Start difference. First operand 1859 states and 2657 transitions. Second operand 28 states. [2021-01-06 16:03:03,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:03:03,072 INFO L93 Difference]: Finished difference Result 3464 states and 5027 transitions. [2021-01-06 16:03:03,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-06 16:03:03,072 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 336 [2021-01-06 16:03:03,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:03:03,080 INFO L225 Difference]: With dead ends: 3464 [2021-01-06 16:03:03,081 INFO L226 Difference]: Without dead ends: 1893 [2021-01-06 16:03:03,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=258, Invalid=498, Unknown=0, NotChecked=0, Total=756 [2021-01-06 16:03:03,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2021-01-06 16:03:03,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1877. [2021-01-06 16:03:03,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1877 states. [2021-01-06 16:03:03,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 2677 transitions. [2021-01-06 16:03:03,146 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 2677 transitions. Word has length 336 [2021-01-06 16:03:03,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:03:03,147 INFO L481 AbstractCegarLoop]: Abstraction has 1877 states and 2677 transitions. [2021-01-06 16:03:03,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-01-06 16:03:03,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 2677 transitions. [2021-01-06 16:03:03,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2021-01-06 16:03:03,149 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:03:03,150 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:03:03,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-01-06 16:03:03,351 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:03:03,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:03:03,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1803607242, now seen corresponding path program 13 times [2021-01-06 16:03:03,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:03:03,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497981700] [2021-01-06 16:03:03,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:03:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:03:03,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 2490 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-01-06 16:03:03,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497981700] [2021-01-06 16:03:03,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834328870] [2021-01-06 16:03:03,901 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:03:04,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 1396 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 16:03:04,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:03:04,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 2490 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-01-06 16:03:04,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:03:04,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-01-06 16:03:04,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115448424] [2021-01-06 16:03:04,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-06 16:03:04,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:03:04,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-06 16:03:04,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-01-06 16:03:04,784 INFO L87 Difference]: Start difference. First operand 1877 states and 2677 transitions. Second operand 24 states. [2021-01-06 16:03:05,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:03:05,036 INFO L93 Difference]: Finished difference Result 3480 states and 5044 transitions. [2021-01-06 16:03:05,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-06 16:03:05,037 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 352 [2021-01-06 16:03:05,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:03:05,047 INFO L225 Difference]: With dead ends: 3480 [2021-01-06 16:03:05,047 INFO L226 Difference]: Without dead ends: 1906 [2021-01-06 16:03:05,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-01-06 16:03:05,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2021-01-06 16:03:05,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1892. [2021-01-06 16:03:05,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1892 states. [2021-01-06 16:03:05,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 2694 transitions. [2021-01-06 16:03:05,109 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 2694 transitions. Word has length 352 [2021-01-06 16:03:05,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:03:05,109 INFO L481 AbstractCegarLoop]: Abstraction has 1892 states and 2694 transitions. [2021-01-06 16:03:05,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-01-06 16:03:05,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 2694 transitions. [2021-01-06 16:03:05,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2021-01-06 16:03:05,112 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:03:05,112 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:03:05,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-01-06 16:03:05,313 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:03:05,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:03:05,314 INFO L82 PathProgramCache]: Analyzing trace with hash -107901012, now seen corresponding path program 14 times [2021-01-06 16:03:05,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:03:05,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562325061] [2021-01-06 16:03:05,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:03:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:03:05,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2925 backedges. 0 proven. 2751 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-01-06 16:03:05,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562325061] [2021-01-06 16:03:05,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290434757] [2021-01-06 16:03:05,989 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 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:06,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 16:03:06,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:03:06,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 1431 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-06 16:03:06,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:03:06,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2925 backedges. 0 proven. 2751 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-01-06 16:03:06,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:03:06,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-01-06 16:03:06,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005838593] [2021-01-06 16:03:06,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-06 16:03:06,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:03:06,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-06 16:03:06,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-01-06 16:03:06,887 INFO L87 Difference]: Start difference. First operand 1892 states and 2694 transitions. Second operand 25 states. [2021-01-06 16:03:07,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:03:07,177 INFO L93 Difference]: Finished difference Result 3495 states and 5061 transitions. [2021-01-06 16:03:07,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-06 16:03:07,178 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 365 [2021-01-06 16:03:07,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:03:07,185 INFO L225 Difference]: With dead ends: 3495 [2021-01-06 16:03:07,186 INFO L226 Difference]: Without dead ends: 1921 [2021-01-06 16:03:07,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-01-06 16:03:07,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2021-01-06 16:03:07,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1907. [2021-01-06 16:03:07,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1907 states. [2021-01-06 16:03:07,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 2711 transitions. [2021-01-06 16:03:07,251 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 2711 transitions. Word has length 365 [2021-01-06 16:03:07,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:03:07,252 INFO L481 AbstractCegarLoop]: Abstraction has 1907 states and 2711 transitions. [2021-01-06 16:03:07,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-01-06 16:03:07,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 2711 transitions. [2021-01-06 16:03:07,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2021-01-06 16:03:07,255 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:03:07,255 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:03:07,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:07,470 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:03:07,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:03:07,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1895197962, now seen corresponding path program 15 times [2021-01-06 16:03:07,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:03:07,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465571004] [2021-01-06 16:03:07,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:03:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:03:08,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3199 backedges. 0 proven. 3025 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-01-06 16:03:08,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465571004] [2021-01-06 16:03:08,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412876210] [2021-01-06 16:03:08,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:24,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-06 16:03:24,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:03:24,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-06 16:03:24,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:03:25,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3199 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 3148 trivial. 0 not checked. [2021-01-06 16:03:25,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:03:25,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9] total 32 [2021-01-06 16:03:25,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413621900] [2021-01-06 16:03:25,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-01-06 16:03:25,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:03:25,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-01-06 16:03:25,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=657, Unknown=0, NotChecked=0, Total=992 [2021-01-06 16:03:25,155 INFO L87 Difference]: Start difference. First operand 1907 states and 2711 transitions. Second operand 32 states. [2021-01-06 16:03:25,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:03:25,539 INFO L93 Difference]: Finished difference Result 3515 states and 5084 transitions. [2021-01-06 16:03:25,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-06 16:03:25,540 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 378 [2021-01-06 16:03:25,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:03:25,545 INFO L225 Difference]: With dead ends: 3515 [2021-01-06 16:03:25,545 INFO L226 Difference]: Without dead ends: 1941 [2021-01-06 16:03:25,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=335, Invalid=657, Unknown=0, NotChecked=0, Total=992 [2021-01-06 16:03:25,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2021-01-06 16:03:25,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1925. [2021-01-06 16:03:25,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1925 states. [2021-01-06 16:03:25,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 2731 transitions. [2021-01-06 16:03:25,607 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 2731 transitions. Word has length 378 [2021-01-06 16:03:25,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:03:25,608 INFO L481 AbstractCegarLoop]: Abstraction has 1925 states and 2731 transitions. [2021-01-06 16:03:25,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2021-01-06 16:03:25,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 2731 transitions. [2021-01-06 16:03:25,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2021-01-06 16:03:25,611 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:03:25,611 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:03:25,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-01-06 16:03:25,826 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:03:25,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:03:25,828 INFO L82 PathProgramCache]: Analyzing trace with hash -430307663, now seen corresponding path program 16 times [2021-01-06 16:03:25,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:03:25,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634946153] [2021-01-06 16:03:25,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:03:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:03:26,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3505 backedges. 0 proven. 3312 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-01-06 16:03:26,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634946153] [2021-01-06 16:03:26,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645512754] [2021-01-06 16:03:26,522 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:27,243 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 16:03:27,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:03:27,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 16:03:27,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:03:27,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3505 backedges. 0 proven. 3312 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-01-06 16:03:27,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:03:27,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-01-06 16:03:27,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137200549] [2021-01-06 16:03:27,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-01-06 16:03:27,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:03:27,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-01-06 16:03:27,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-01-06 16:03:27,771 INFO L87 Difference]: Start difference. First operand 1925 states and 2731 transitions. Second operand 27 states. [2021-01-06 16:03:28,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:03:28,069 INFO L93 Difference]: Finished difference Result 3531 states and 5101 transitions. [2021-01-06 16:03:28,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-06 16:03:28,069 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 394 [2021-01-06 16:03:28,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:03:28,073 INFO L225 Difference]: With dead ends: 3531 [2021-01-06 16:03:28,073 INFO L226 Difference]: Without dead ends: 1954 [2021-01-06 16:03:28,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-01-06 16:03:28,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2021-01-06 16:03:28,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1940. [2021-01-06 16:03:28,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1940 states. [2021-01-06 16:03:28,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 2748 transitions. [2021-01-06 16:03:28,132 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 2748 transitions. Word has length 394 [2021-01-06 16:03:28,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:03:28,132 INFO L481 AbstractCegarLoop]: Abstraction has 1940 states and 2748 transitions. [2021-01-06 16:03:28,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-01-06 16:03:28,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 2748 transitions. [2021-01-06 16:03:28,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2021-01-06 16:03:28,136 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:03:28,136 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:03:28,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:28,350 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:03:28,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:03:28,351 INFO L82 PathProgramCache]: Analyzing trace with hash 466517927, now seen corresponding path program 17 times [2021-01-06 16:03:28,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:03:28,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701077896] [2021-01-06 16:03:28,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:03:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:03:29,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3805 backedges. 0 proven. 3612 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-01-06 16:03:29,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701077896] [2021-01-06 16:03:29,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880711547] [2021-01-06 16:03:29,100 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:03:48,977 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2021-01-06 16:03:48,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:03:49,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 1547 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 16:03:49,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:03:49,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3805 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2021-01-06 16:03:49,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:03:49,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 10] total 35 [2021-01-06 16:03:49,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206409143] [2021-01-06 16:03:49,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-01-06 16:03:49,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:03:49,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-01-06 16:03:49,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=795, Unknown=0, NotChecked=0, Total=1190 [2021-01-06 16:03:49,723 INFO L87 Difference]: Start difference. First operand 1940 states and 2748 transitions. Second operand 35 states. [2021-01-06 16:03:50,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:03:50,148 INFO L93 Difference]: Finished difference Result 3551 states and 5124 transitions. [2021-01-06 16:03:50,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-01-06 16:03:50,149 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 407 [2021-01-06 16:03:50,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:03:50,152 INFO L225 Difference]: With dead ends: 3551 [2021-01-06 16:03:50,153 INFO L226 Difference]: Without dead ends: 1974 [2021-01-06 16:03:50,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=395, Invalid=795, Unknown=0, NotChecked=0, Total=1190 [2021-01-06 16:03:50,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2021-01-06 16:03:50,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1958. [2021-01-06 16:03:50,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1958 states. [2021-01-06 16:03:50,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 2768 transitions. [2021-01-06 16:03:50,211 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 2768 transitions. Word has length 407 [2021-01-06 16:03:50,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:03:50,212 INFO L481 AbstractCegarLoop]: Abstraction has 1958 states and 2768 transitions. [2021-01-06 16:03:50,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2021-01-06 16:03:50,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 2768 transitions. [2021-01-06 16:03:50,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2021-01-06 16:03:50,216 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:03:50,216 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 8, 8, 8, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:03:50,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-01-06 16:03:50,431 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:03:50,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:03:50,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1531031052, now seen corresponding path program 18 times [2021-01-06 16:03:50,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:03:50,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338193076] [2021-01-06 16:03:50,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:03:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:03:51,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 3925 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-01-06 16:03:51,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338193076] [2021-01-06 16:03:51,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581562834] [2021-01-06 16:03:51,342 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:04:29,566 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-01-06 16:04:29,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:04:29,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 1278 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-06 16:04:29,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:04:30,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 4048 trivial. 0 not checked. [2021-01-06 16:04:30,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:04:30,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 11] total 37 [2021-01-06 16:04:30,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031003599] [2021-01-06 16:04:30,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-01-06 16:04:30,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:04:30,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-01-06 16:04:30,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=432, Invalid=900, Unknown=0, NotChecked=0, Total=1332 [2021-01-06 16:04:30,262 INFO L87 Difference]: Start difference. First operand 1958 states and 2768 transitions. Second operand 37 states. [2021-01-06 16:04:30,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:04:30,693 INFO L93 Difference]: Finished difference Result 3572 states and 5147 transitions. [2021-01-06 16:04:30,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-01-06 16:04:30,694 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 423 [2021-01-06 16:04:30,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:04:30,697 INFO L225 Difference]: With dead ends: 3572 [2021-01-06 16:04:30,697 INFO L226 Difference]: Without dead ends: 1992 [2021-01-06 16:04:30,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=432, Invalid=900, Unknown=0, NotChecked=0, Total=1332 [2021-01-06 16:04:30,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2021-01-06 16:04:30,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1976. [2021-01-06 16:04:30,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2021-01-06 16:04:30,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2788 transitions. [2021-01-06 16:04:30,740 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2788 transitions. Word has length 423 [2021-01-06 16:04:30,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:04:30,741 INFO L481 AbstractCegarLoop]: Abstraction has 1976 states and 2788 transitions. [2021-01-06 16:04:30,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2021-01-06 16:04:30,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2788 transitions. [2021-01-06 16:04:30,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2021-01-06 16:04:30,745 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:04:30,745 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 9, 9, 9, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:04:30,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-01-06 16:04:30,961 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:04:30,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:04:30,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1708589689, now seen corresponding path program 19 times [2021-01-06 16:04:30,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:04:30,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989745837] [2021-01-06 16:04:30,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:04:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:04:31,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4491 backedges. 0 proven. 4251 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-01-06 16:04:31,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989745837] [2021-01-06 16:04:31,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923601130] [2021-01-06 16:04:31,834 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:04:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:04:32,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-06 16:04:32,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:04:32,948 INFO L134 CoverageAnalysis]: Checked inductivity of 4491 backedges. 0 proven. 4251 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-01-06 16:04:32,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:04:32,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-01-06 16:04:32,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826366033] [2021-01-06 16:04:32,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-01-06 16:04:32,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:04:32,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-01-06 16:04:32,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-01-06 16:04:32,952 INFO L87 Difference]: Start difference. First operand 1976 states and 2788 transitions. Second operand 30 states. [2021-01-06 16:04:33,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:04:33,308 INFO L93 Difference]: Finished difference Result 3588 states and 5164 transitions. [2021-01-06 16:04:33,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-01-06 16:04:33,309 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 439 [2021-01-06 16:04:33,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:04:33,313 INFO L225 Difference]: With dead ends: 3588 [2021-01-06 16:04:33,313 INFO L226 Difference]: Without dead ends: 2005 [2021-01-06 16:04:33,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-01-06 16:04:33,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2005 states. [2021-01-06 16:04:33,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2005 to 1991. [2021-01-06 16:04:33,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1991 states. [2021-01-06 16:04:33,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 2805 transitions. [2021-01-06 16:04:33,376 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 2805 transitions. Word has length 439 [2021-01-06 16:04:33,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:04:33,377 INFO L481 AbstractCegarLoop]: Abstraction has 1991 states and 2805 transitions. [2021-01-06 16:04:33,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2021-01-06 16:04:33,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 2805 transitions. [2021-01-06 16:04:33,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2021-01-06 16:04:33,381 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:04:33,382 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 9, 9, 9, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:04:33,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-01-06 16:04:33,596 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:04:33,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:04:33,597 INFO L82 PathProgramCache]: Analyzing trace with hash -193356719, now seen corresponding path program 20 times [2021-01-06 16:04:33,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:04:33,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006199466] [2021-01-06 16:04:33,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:04:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:04:34,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4590 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-01-06 16:04:34,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006199466] [2021-01-06 16:04:34,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39560604] [2021-01-06 16:04:34,500 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 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:04:35,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 16:04:35,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:04:35,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 1674 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-06 16:04:35,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:04:35,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4590 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-01-06 16:04:35,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:04:35,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-01-06 16:04:35,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412505635] [2021-01-06 16:04:35,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-01-06 16:04:35,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:04:35,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-01-06 16:04:35,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-01-06 16:04:35,592 INFO L87 Difference]: Start difference. First operand 1991 states and 2805 transitions. Second operand 31 states. [2021-01-06 16:04:35,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:04:35,931 INFO L93 Difference]: Finished difference Result 3603 states and 5181 transitions. [2021-01-06 16:04:35,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-06 16:04:35,933 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 452 [2021-01-06 16:04:35,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:04:35,937 INFO L225 Difference]: With dead ends: 3603 [2021-01-06 16:04:35,938 INFO L226 Difference]: Without dead ends: 2020 [2021-01-06 16:04:35,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-01-06 16:04:35,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2021-01-06 16:04:35,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2006. [2021-01-06 16:04:35,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2006 states. [2021-01-06 16:04:35,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 2822 transitions. [2021-01-06 16:04:35,996 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 2822 transitions. Word has length 452 [2021-01-06 16:04:35,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:04:35,997 INFO L481 AbstractCegarLoop]: Abstraction has 2006 states and 2822 transitions. [2021-01-06 16:04:35,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2021-01-06 16:04:35,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 2822 transitions. [2021-01-06 16:04:36,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2021-01-06 16:04:36,000 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:04:36,000 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 9, 9, 9, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:04:36,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-01-06 16:04:36,212 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:04:36,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:04:36,213 INFO L82 PathProgramCache]: Analyzing trace with hash -140847673, now seen corresponding path program 21 times [2021-01-06 16:04:36,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:04:36,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593950465] [2021-01-06 16:04:36,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:04:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:04:37,224 INFO L134 CoverageAnalysis]: Checked inductivity of 5182 backedges. 0 proven. 4942 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-01-06 16:04:37,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593950465] [2021-01-06 16:04:37,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485081536] [2021-01-06 16:04:37,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:05:10,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-01-06 16:05:10,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:05:10,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 16:05:10,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:05:11,239 INFO L134 CoverageAnalysis]: Checked inductivity of 5182 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 5065 trivial. 0 not checked. [2021-01-06 16:05:11,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:05:11,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 12] total 41 [2021-01-06 16:05:11,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646566924] [2021-01-06 16:05:11,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-01-06 16:05:11,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:05:11,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-01-06 16:05:11,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=1110, Unknown=0, NotChecked=0, Total=1640 [2021-01-06 16:05:11,242 INFO L87 Difference]: Start difference. First operand 2006 states and 2822 transitions. Second operand 41 states. [2021-01-06 16:05:11,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:05:11,716 INFO L93 Difference]: Finished difference Result 3623 states and 5204 transitions. [2021-01-06 16:05:11,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-01-06 16:05:11,717 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 465 [2021-01-06 16:05:11,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:05:11,722 INFO L225 Difference]: With dead ends: 3623 [2021-01-06 16:05:11,722 INFO L226 Difference]: Without dead ends: 2040 [2021-01-06 16:05:11,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=530, Invalid=1110, Unknown=0, NotChecked=0, Total=1640 [2021-01-06 16:05:11,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2021-01-06 16:05:11,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 2024. [2021-01-06 16:05:11,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2024 states. [2021-01-06 16:05:11,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 2842 transitions. [2021-01-06 16:05:11,790 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 2842 transitions. Word has length 465 [2021-01-06 16:05:11,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:05:11,791 INFO L481 AbstractCegarLoop]: Abstraction has 2024 states and 2842 transitions. [2021-01-06 16:05:11,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2021-01-06 16:05:11,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 2842 transitions. [2021-01-06 16:05:11,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2021-01-06 16:05:11,795 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:05:11,795 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 10, 10, 10, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:05:12,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-01-06 16:05:12,010 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:05:12,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:05:12,011 INFO L82 PathProgramCache]: Analyzing trace with hash 876078188, now seen corresponding path program 22 times [2021-01-06 16:05:12,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:05:12,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160117493] [2021-01-06 16:05:12,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:05:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:05:13,181 INFO L134 CoverageAnalysis]: Checked inductivity of 5575 backedges. 0 proven. 5307 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2021-01-06 16:05:13,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160117493] [2021-01-06 16:05:13,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683165369] [2021-01-06 16:05:13,183 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:05:14,157 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 16:05:14,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:05:14,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 1755 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-06 16:05:14,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:05:14,770 INFO L134 CoverageAnalysis]: Checked inductivity of 5575 backedges. 0 proven. 5307 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2021-01-06 16:05:14,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:05:14,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-01-06 16:05:14,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232363857] [2021-01-06 16:05:14,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-01-06 16:05:14,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:05:14,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-01-06 16:05:14,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-01-06 16:05:14,773 INFO L87 Difference]: Start difference. First operand 2024 states and 2842 transitions. Second operand 33 states. [2021-01-06 16:05:15,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:05:15,132 INFO L93 Difference]: Finished difference Result 3639 states and 5221 transitions. [2021-01-06 16:05:15,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-06 16:05:15,132 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 481 [2021-01-06 16:05:15,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:05:15,136 INFO L225 Difference]: With dead ends: 3639 [2021-01-06 16:05:15,137 INFO L226 Difference]: Without dead ends: 2053 [2021-01-06 16:05:15,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-01-06 16:05:15,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2021-01-06 16:05:15,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 2039. [2021-01-06 16:05:15,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2039 states. [2021-01-06 16:05:15,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 2859 transitions. [2021-01-06 16:05:15,202 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 2859 transitions. Word has length 481 [2021-01-06 16:05:15,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:05:15,202 INFO L481 AbstractCegarLoop]: Abstraction has 2039 states and 2859 transitions. [2021-01-06 16:05:15,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2021-01-06 16:05:15,203 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 2859 transitions. [2021-01-06 16:05:15,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2021-01-06 16:05:15,207 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:05:15,207 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 10, 10, 10, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:05:15,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-01-06 16:05:15,421 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:05:15,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:05:15,421 INFO L82 PathProgramCache]: Analyzing trace with hash -226203978, now seen corresponding path program 23 times [2021-01-06 16:05:15,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:05:15,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129345381] [2021-01-06 16:05:15,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:05:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:05:16,484 INFO L134 CoverageAnalysis]: Checked inductivity of 5953 backedges. 0 proven. 5685 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2021-01-06 16:05:16,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129345381] [2021-01-06 16:05:16,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207939697] [2021-01-06 16:05:16,485 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true