/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-dcfa08f [2020-12-23 06:07:11,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:07:11,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:07:11,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 06:07:11,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 06:07:11,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 06:07:11,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 06:07:11,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 06:07:11,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 06:07:11,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 06:07:11,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 06:07:11,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 06:07:11,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 06:07:11,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 06:07:11,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 06:07:11,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 06:07:11,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 06:07:11,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 06:07:11,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 06:07:11,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 06:07:11,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 06:07:11,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 06:07:11,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 06:07:11,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 06:07:11,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 06:07:11,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 06:07:11,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 06:07:11,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 06:07:11,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 06:07:11,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 06:07:11,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 06:07:11,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 06:07:11,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 06:07:11,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 06:07:11,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 06:07:11,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 06:07:11,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 06:07:11,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 06:07:11,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 06:07:11,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 06:07:11,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 06:07:11,740 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 06:07:11,765 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:07:11,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:07:11,767 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:07:11,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:07:11,768 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:07:11,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:07:11,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:07:11,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:07:11,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:07:11,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:07:11,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:07:11,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:07:11,769 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:07:11,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:07:11,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:07:11,770 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:07:11,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:07:11,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:07:11,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:07:11,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:07:11,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:07:11,771 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:07:11,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:07:11,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:07:11,772 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:07:11,772 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:07:12,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:07:12,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:07:12,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:07:12,176 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:07:12,177 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:07:12,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/mea8000.c [2020-12-23 06:07:12,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/871c9c93a/7cb381e597f24b90b85ede1884e8f8f8/FLAG20ef5cccd [2020-12-23 06:07:12,861 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:07:12,862 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-benchs/mea8000.c [2020-12-23 06:07:12,877 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/871c9c93a/7cb381e597f24b90b85ede1884e8f8f8/FLAG20ef5cccd [2020-12-23 06:07:13,188 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/871c9c93a/7cb381e597f24b90b85ede1884e8f8f8 [2020-12-23 06:07:13,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:07:13,199 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:07:13,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:07:13,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:07:13,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:07:13,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:07:13" (1/1) ... [2020-12-23 06:07:13,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14d6fe06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:13, skipping insertion in model container [2020-12-23 06:07:13,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:07:13" (1/1) ... [2020-12-23 06:07:13,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:07:13,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 06:07:13,439 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 [2020-12-23 06:07:13,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:07:13,594 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 06:07:13,609 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 [2020-12-23 06:07:13,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:07:13,770 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:07:13,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:13 WrapperNode [2020-12-23 06:07:13,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:07:13,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:07:13,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:07:13,774 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:07:13,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:13" (1/1) ... [2020-12-23 06:07:13,833 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:13" (1/1) ... [2020-12-23 06:07:13,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:07:13,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:07:13,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:07:13,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:07:13,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:13" (1/1) ... [2020-12-23 06:07:13,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:13" (1/1) ... [2020-12-23 06:07:13,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:13" (1/1) ... [2020-12-23 06:07:13,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:13" (1/1) ... [2020-12-23 06:07:13,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:13" (1/1) ... [2020-12-23 06:07:13,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:13" (1/1) ... [2020-12-23 06:07:14,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:13" (1/1) ... [2020-12-23 06:07:14,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:07:14,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:07:14,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:07:14,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:07:14,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:07:14,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:07:14,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-23 06:07:14,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 06:07:14,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-23 06:07:14,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 06:07:14,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_char [2020-12-23 06:07:14,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:07:14,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:07:14,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:07:15,636 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:07:15,637 INFO L299 CfgBuilder]: Removed 121 assume(true) statements. [2020-12-23 06:07:15,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:07:15 BoogieIcfgContainer [2020-12-23 06:07:15,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:07:15,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:07:15,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:07:15,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:07:15,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:07:13" (1/3) ... [2020-12-23 06:07:15,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4346145c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:07:15, skipping insertion in model container [2020-12-23 06:07:15,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:13" (2/3) ... [2020-12-23 06:07:15,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4346145c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:07:15, skipping insertion in model container [2020-12-23 06:07:15,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:07:15" (3/3) ... [2020-12-23 06:07:15,648 INFO L111 eAbstractionObserver]: Analyzing ICFG mea8000.c [2020-12-23 06:07:15,655 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:07:15,660 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-12-23 06:07:15,680 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-12-23 06:07:15,709 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:07:15,710 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:07:15,710 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:07:15,710 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:07:15,710 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:07:15,710 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:07:15,710 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:07:15,711 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:07:15,731 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states. [2020-12-23 06:07:15,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 06:07:15,738 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:15,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:07:15,739 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]=== [2020-12-23 06:07:15,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:15,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1623000979, now seen corresponding path program 1 times [2020-12-23 06:07:15,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:15,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801771424] [2020-12-23 06:07:15,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:16,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:07:16,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801771424] [2020-12-23 06:07:16,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:07:16,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 06:07:16,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504017211] [2020-12-23 06:07:16,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 06:07:16,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:07:16,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 06:07:16,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 06:07:16,112 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 2 states. [2020-12-23 06:07:16,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:07:16,164 INFO L93 Difference]: Finished difference Result 256 states and 385 transitions. [2020-12-23 06:07:16,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 06:07:16,168 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-23 06:07:16,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:07:16,195 INFO L225 Difference]: With dead ends: 256 [2020-12-23 06:07:16,195 INFO L226 Difference]: Without dead ends: 127 [2020-12-23 06:07:16,201 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 [2020-12-23 06:07:16,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-23 06:07:16,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2020-12-23 06:07:16,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-12-23 06:07:16,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 167 transitions. [2020-12-23 06:07:16,260 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 167 transitions. Word has length 13 [2020-12-23 06:07:16,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:07:16,260 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 167 transitions. [2020-12-23 06:07:16,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 06:07:16,261 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 167 transitions. [2020-12-23 06:07:16,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 06:07:16,262 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:16,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:07:16,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:07:16,263 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]=== [2020-12-23 06:07:16,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:16,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1750220142, now seen corresponding path program 1 times [2020-12-23 06:07:16,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:16,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800888440] [2020-12-23 06:07:16,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:16,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:07:16,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800888440] [2020-12-23 06:07:16,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:07:16,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 06:07:16,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486080794] [2020-12-23 06:07:16,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 06:07:16,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:07:16,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 06:07:16,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 06:07:16,380 INFO L87 Difference]: Start difference. First operand 127 states and 167 transitions. Second operand 3 states. [2020-12-23 06:07:16,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:07:16,424 INFO L93 Difference]: Finished difference Result 252 states and 332 transitions. [2020-12-23 06:07:16,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 06:07:16,425 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-12-23 06:07:16,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:07:16,427 INFO L225 Difference]: With dead ends: 252 [2020-12-23 06:07:16,427 INFO L226 Difference]: Without dead ends: 142 [2020-12-23 06:07:16,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 06:07:16,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-12-23 06:07:16,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 128. [2020-12-23 06:07:16,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-12-23 06:07:16,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 168 transitions. [2020-12-23 06:07:16,444 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 168 transitions. Word has length 13 [2020-12-23 06:07:16,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:07:16,445 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 168 transitions. [2020-12-23 06:07:16,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 06:07:16,445 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 168 transitions. [2020-12-23 06:07:16,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 06:07:16,446 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:16,447 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] [2020-12-23 06:07:16,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 06:07:16,447 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]=== [2020-12-23 06:07:16,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:16,448 INFO L82 PathProgramCache]: Analyzing trace with hash -751698468, now seen corresponding path program 1 times [2020-12-23 06:07:16,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:16,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459365520] [2020-12-23 06:07:16,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:16,533 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 06:07:16,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1232481957] [2020-12-23 06:07:16,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:07:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:16,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-23 06:07:16,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:07:16,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 06:07:16,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459365520] [2020-12-23 06:07:16,820 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 06:07:16,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232481957] [2020-12-23 06:07:16,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:07:16,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 06:07:16,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836261769] [2020-12-23 06:07:16,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 06:07:16,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:07:16,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 06:07:16,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 06:07:16,826 INFO L87 Difference]: Start difference. First operand 128 states and 168 transitions. Second operand 3 states. [2020-12-23 06:07:16,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:07:16,854 INFO L93 Difference]: Finished difference Result 237 states and 314 transitions. [2020-12-23 06:07:16,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 06:07:16,855 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-23 06:07:16,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:07:16,857 INFO L225 Difference]: With dead ends: 237 [2020-12-23 06:07:16,857 INFO L226 Difference]: Without dead ends: 131 [2020-12-23 06:07:16,858 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 [2020-12-23 06:07:16,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-23 06:07:16,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2020-12-23 06:07:16,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-12-23 06:07:16,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 169 transitions. [2020-12-23 06:07:16,871 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 169 transitions. Word has length 26 [2020-12-23 06:07:16,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:07:16,871 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 169 transitions. [2020-12-23 06:07:16,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 06:07:16,871 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 169 transitions. [2020-12-23 06:07:16,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 06:07:16,873 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:16,873 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] [2020-12-23 06:07:17,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 06:07:17,087 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]=== [2020-12-23 06:07:17,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:17,089 INFO L82 PathProgramCache]: Analyzing trace with hash -48834505, now seen corresponding path program 1 times [2020-12-23 06:07:17,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:17,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882649194] [2020-12-23 06:07:17,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:17,120 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 06:07:17,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [406105512] [2020-12-23 06:07:17,121 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 [2020-12-23 06:07:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:17,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 06:07:17,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:07:17,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 06:07:17,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882649194] [2020-12-23 06:07:17,363 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 06:07:17,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406105512] [2020-12-23 06:07:17,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:07:17,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 06:07:17,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590986824] [2020-12-23 06:07:17,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 06:07:17,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:07:17,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 06:07:17,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 06:07:17,366 INFO L87 Difference]: Start difference. First operand 129 states and 169 transitions. Second operand 3 states. [2020-12-23 06:07:17,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:07:17,410 INFO L93 Difference]: Finished difference Result 279 states and 379 transitions. [2020-12-23 06:07:17,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 06:07:17,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-12-23 06:07:17,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:07:17,413 INFO L225 Difference]: With dead ends: 279 [2020-12-23 06:07:17,413 INFO L226 Difference]: Without dead ends: 173 [2020-12-23 06:07:17,418 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 [2020-12-23 06:07:17,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-12-23 06:07:17,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 160. [2020-12-23 06:07:17,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-12-23 06:07:17,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 221 transitions. [2020-12-23 06:07:17,446 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 221 transitions. Word has length 29 [2020-12-23 06:07:17,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:07:17,447 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 221 transitions. [2020-12-23 06:07:17,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 06:07:17,450 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 221 transitions. [2020-12-23 06:07:17,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 06:07:17,452 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:17,452 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] [2020-12-23 06:07:17,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:07:17,669 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]=== [2020-12-23 06:07:17,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:17,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1185271855, now seen corresponding path program 1 times [2020-12-23 06:07:17,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:17,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161301719] [2020-12-23 06:07:17,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:17,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 06:07:17,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161301719] [2020-12-23 06:07:17,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163513166] [2020-12-23 06:07:17,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:07:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:18,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 06:07:18,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:07:18,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 06:07:18,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:07:18,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-23 06:07:18,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816352643] [2020-12-23 06:07:18,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 06:07:18,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:07:18,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 06:07:18,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 06:07:18,084 INFO L87 Difference]: Start difference. First operand 160 states and 221 transitions. Second operand 5 states. [2020-12-23 06:07:18,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:07:18,126 INFO L93 Difference]: Finished difference Result 331 states and 455 transitions. [2020-12-23 06:07:18,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:07:18,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-12-23 06:07:18,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:07:18,128 INFO L225 Difference]: With dead ends: 331 [2020-12-23 06:07:18,129 INFO L226 Difference]: Without dead ends: 189 [2020-12-23 06:07:18,130 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 [2020-12-23 06:07:18,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-12-23 06:07:18,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 175. [2020-12-23 06:07:18,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-12-23 06:07:18,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 238 transitions. [2020-12-23 06:07:18,147 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 238 transitions. Word has length 31 [2020-12-23 06:07:18,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:07:18,147 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 238 transitions. [2020-12-23 06:07:18,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 06:07:18,147 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 238 transitions. [2020-12-23 06:07:18,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 06:07:18,149 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:18,149 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] [2020-12-23 06:07:18,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:07:18,365 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]=== [2020-12-23 06:07:18,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:18,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1403382939, now seen corresponding path program 2 times [2020-12-23 06:07:18,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:18,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322797387] [2020-12-23 06:07:18,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:18,524 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-23 06:07:18,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322797387] [2020-12-23 06:07:18,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273894912] [2020-12-23 06:07:18,526 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 [2020-12-23 06:07:18,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 06:07:18,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:07:18,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 06:07:18,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:07:18,790 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-23 06:07:18,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 06:07:18,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-23 06:07:18,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397797345] [2020-12-23 06:07:18,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 06:07:18,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:07:18,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 06:07:18,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 06:07:18,805 INFO L87 Difference]: Start difference. First operand 175 states and 238 transitions. Second operand 3 states. [2020-12-23 06:07:18,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:07:18,870 INFO L93 Difference]: Finished difference Result 248 states and 357 transitions. [2020-12-23 06:07:18,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 06:07:18,871 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-23 06:07:18,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:07:18,876 INFO L225 Difference]: With dead ends: 248 [2020-12-23 06:07:18,876 INFO L226 Difference]: Without dead ends: 244 [2020-12-23 06:07:18,878 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 [2020-12-23 06:07:18,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-12-23 06:07:18,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 171. [2020-12-23 06:07:18,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-12-23 06:07:18,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 234 transitions. [2020-12-23 06:07:18,917 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 234 transitions. Word has length 44 [2020-12-23 06:07:18,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:07:18,918 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 234 transitions. [2020-12-23 06:07:18,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 06:07:18,921 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 234 transitions. [2020-12-23 06:07:18,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-23 06:07:18,923 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:18,924 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] [2020-12-23 06:07:19,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:07:19,135 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]=== [2020-12-23 06:07:19,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:19,137 INFO L82 PathProgramCache]: Analyzing trace with hash -421129522, now seen corresponding path program 1 times [2020-12-23 06:07:19,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:19,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274125341] [2020-12-23 06:07:19,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:19,199 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 06:07:19,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1374503370] [2020-12-23 06:07:19,200 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 [2020-12-23 06:07:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:19,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-23 06:07:19,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:07:19,521 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-23 06:07:19,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274125341] [2020-12-23 06:07:19,522 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 06:07:19,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374503370] [2020-12-23 06:07:19,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:07:19,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 06:07:19,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175803609] [2020-12-23 06:07:19,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 06:07:19,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:07:19,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 06:07:19,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 06:07:19,527 INFO L87 Difference]: Start difference. First operand 171 states and 234 transitions. Second operand 3 states. [2020-12-23 06:07:19,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:07:19,623 INFO L93 Difference]: Finished difference Result 335 states and 476 transitions. [2020-12-23 06:07:19,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 06:07:19,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-12-23 06:07:19,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:07:19,628 INFO L225 Difference]: With dead ends: 335 [2020-12-23 06:07:19,628 INFO L226 Difference]: Without dead ends: 202 [2020-12-23 06:07:19,631 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 [2020-12-23 06:07:19,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-12-23 06:07:19,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-12-23 06:07:19,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-12-23 06:07:19,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 285 transitions. [2020-12-23 06:07:19,649 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 285 transitions. Word has length 57 [2020-12-23 06:07:19,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:07:19,650 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 285 transitions. [2020-12-23 06:07:19,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 06:07:19,652 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 285 transitions. [2020-12-23 06:07:19,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 06:07:19,663 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:19,664 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] [2020-12-23 06:07:19,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 06:07:19,878 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]=== [2020-12-23 06:07:19,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:19,879 INFO L82 PathProgramCache]: Analyzing trace with hash -197872668, now seen corresponding path program 1 times [2020-12-23 06:07:19,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:19,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034447552] [2020-12-23 06:07:19,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:20,009 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-12-23 06:07:20,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034447552] [2020-12-23 06:07:20,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790562691] [2020-12-23 06:07:20,011 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 [2020-12-23 06:07:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:20,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-23 06:07:20,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:07:20,275 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-12-23 06:07:20,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 06:07:20,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-23 06:07:20,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076252704] [2020-12-23 06:07:20,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 06:07:20,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:07:20,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 06:07:20,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 06:07:20,278 INFO L87 Difference]: Start difference. First operand 202 states and 285 transitions. Second operand 3 states. [2020-12-23 06:07:20,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:07:20,306 INFO L93 Difference]: Finished difference Result 370 states and 532 transitions. [2020-12-23 06:07:20,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 06:07:20,306 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-23 06:07:20,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:07:20,308 INFO L225 Difference]: With dead ends: 370 [2020-12-23 06:07:20,308 INFO L226 Difference]: Without dead ends: 206 [2020-12-23 06:07:20,309 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 [2020-12-23 06:07:20,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-12-23 06:07:20,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 204. [2020-12-23 06:07:20,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-12-23 06:07:20,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 287 transitions. [2020-12-23 06:07:20,318 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 287 transitions. Word has length 65 [2020-12-23 06:07:20,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:07:20,319 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 287 transitions. [2020-12-23 06:07:20,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 06:07:20,319 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 287 transitions. [2020-12-23 06:07:20,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 06:07:20,320 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:20,320 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] [2020-12-23 06:07:20,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:07:20,534 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]=== [2020-12-23 06:07:20,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:20,536 INFO L82 PathProgramCache]: Analyzing trace with hash 27837154, now seen corresponding path program 1 times [2020-12-23 06:07:20,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:20,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67618198] [2020-12-23 06:07:20,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:20,633 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-23 06:07:20,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67618198] [2020-12-23 06:07:20,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901068468] [2020-12-23 06:07:20,633 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 [2020-12-23 06:07:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:20,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 06:07:20,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:07:20,956 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-23 06:07:20,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:07:20,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2020-12-23 06:07:20,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334426683] [2020-12-23 06:07:20,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 06:07:20,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:07:20,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 06:07:20,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 06:07:20,959 INFO L87 Difference]: Start difference. First operand 204 states and 287 transitions. Second operand 7 states. [2020-12-23 06:07:21,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:07:21,028 INFO L93 Difference]: Finished difference Result 409 states and 576 transitions. [2020-12-23 06:07:21,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 06:07:21,029 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 67 [2020-12-23 06:07:21,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:07:21,030 INFO L225 Difference]: With dead ends: 409 [2020-12-23 06:07:21,030 INFO L226 Difference]: Without dead ends: 238 [2020-12-23 06:07:21,031 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 [2020-12-23 06:07:21,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-12-23 06:07:21,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 222. [2020-12-23 06:07:21,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-12-23 06:07:21,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 307 transitions. [2020-12-23 06:07:21,041 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 307 transitions. Word has length 67 [2020-12-23 06:07:21,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:07:21,041 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 307 transitions. [2020-12-23 06:07:21,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 06:07:21,041 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 307 transitions. [2020-12-23 06:07:21,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-23 06:07:21,042 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:21,042 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] [2020-12-23 06:07:21,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:07:21,256 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]=== [2020-12-23 06:07:21,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:21,258 INFO L82 PathProgramCache]: Analyzing trace with hash 481697543, now seen corresponding path program 2 times [2020-12-23 06:07:21,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:21,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73647193] [2020-12-23 06:07:21,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:21,294 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 06:07:21,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [695953721] [2020-12-23 06:07:21,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:07:21,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 06:07:21,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:07:21,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-23 06:07:21,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:07:21,701 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-12-23 06:07:21,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73647193] [2020-12-23 06:07:21,702 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 06:07:21,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695953721] [2020-12-23 06:07:21,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:07:21,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:07:21,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620163854] [2020-12-23 06:07:21,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 06:07:21,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:07:21,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 06:07:21,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 06:07:21,704 INFO L87 Difference]: Start difference. First operand 222 states and 307 transitions. Second operand 5 states. [2020-12-23 06:07:21,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:07:21,845 INFO L93 Difference]: Finished difference Result 716 states and 1081 transitions. [2020-12-23 06:07:21,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 06:07:21,845 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-12-23 06:07:21,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:07:21,851 INFO L225 Difference]: With dead ends: 716 [2020-12-23 06:07:21,851 INFO L226 Difference]: Without dead ends: 712 [2020-12-23 06:07:21,852 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 [2020-12-23 06:07:21,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2020-12-23 06:07:21,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 376. [2020-12-23 06:07:21,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-12-23 06:07:21,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 542 transitions. [2020-12-23 06:07:21,872 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 542 transitions. Word has length 83 [2020-12-23 06:07:21,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:07:21,873 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 542 transitions. [2020-12-23 06:07:21,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 06:07:21,874 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 542 transitions. [2020-12-23 06:07:21,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-23 06:07:21,874 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:21,875 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] [2020-12-23 06:07:22,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 06:07:22,088 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]=== [2020-12-23 06:07:22,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:22,089 INFO L82 PathProgramCache]: Analyzing trace with hash 481562495, now seen corresponding path program 1 times [2020-12-23 06:07:22,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:22,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642876165] [2020-12-23 06:07:22,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:22,186 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-12-23 06:07:22,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642876165] [2020-12-23 06:07:22,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085327192] [2020-12-23 06:07:22,187 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 [2020-12-23 06:07:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:22,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 06:07:22,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:07:22,499 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-23 06:07:22,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:07:22,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 8 [2020-12-23 06:07:22,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140810361] [2020-12-23 06:07:22,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 06:07:22,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:07:22,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 06:07:22,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-23 06:07:22,502 INFO L87 Difference]: Start difference. First operand 376 states and 542 transitions. Second operand 8 states. [2020-12-23 06:07:22,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:07:22,620 INFO L93 Difference]: Finished difference Result 745 states and 1079 transitions. [2020-12-23 06:07:22,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 06:07:22,647 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-12-23 06:07:22,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:07:22,650 INFO L225 Difference]: With dead ends: 745 [2020-12-23 06:07:22,650 INFO L226 Difference]: Without dead ends: 417 [2020-12-23 06:07:22,652 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 [2020-12-23 06:07:22,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-12-23 06:07:22,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 399. [2020-12-23 06:07:22,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2020-12-23 06:07:22,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 567 transitions. [2020-12-23 06:07:22,670 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 567 transitions. Word has length 83 [2020-12-23 06:07:22,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:07:22,670 INFO L481 AbstractCegarLoop]: Abstraction has 399 states and 567 transitions. [2020-12-23 06:07:22,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 06:07:22,671 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 567 transitions. [2020-12-23 06:07:22,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-23 06:07:22,678 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:22,678 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] [2020-12-23 06:07:22,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:07:22,891 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]=== [2020-12-23 06:07:22,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:22,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1364466937, now seen corresponding path program 2 times [2020-12-23 06:07:22,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:22,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313029208] [2020-12-23 06:07:22,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:23,091 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-23 06:07:23,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313029208] [2020-12-23 06:07:23,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200094551] [2020-12-23 06:07:23,092 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 [2020-12-23 06:07:23,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 06:07:23,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:07:23,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 06:07:23,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:07:23,440 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-23 06:07:23,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:07:23,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-23 06:07:23,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173750433] [2020-12-23 06:07:23,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 06:07:23,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:07:23,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 06:07:23,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-23 06:07:23,442 INFO L87 Difference]: Start difference. First operand 399 states and 567 transitions. Second operand 8 states. [2020-12-23 06:07:23,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:07:23,505 INFO L93 Difference]: Finished difference Result 764 states and 1096 transitions. [2020-12-23 06:07:23,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 06:07:23,505 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-12-23 06:07:23,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:07:23,508 INFO L225 Difference]: With dead ends: 764 [2020-12-23 06:07:23,508 INFO L226 Difference]: Without dead ends: 428 [2020-12-23 06:07:23,509 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 [2020-12-23 06:07:23,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2020-12-23 06:07:23,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 414. [2020-12-23 06:07:23,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-12-23 06:07:23,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 584 transitions. [2020-12-23 06:07:23,526 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 584 transitions. Word has length 98 [2020-12-23 06:07:23,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:07:23,526 INFO L481 AbstractCegarLoop]: Abstraction has 414 states and 584 transitions. [2020-12-23 06:07:23,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 06:07:23,526 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 584 transitions. [2020-12-23 06:07:23,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-23 06:07:23,528 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:23,528 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] [2020-12-23 06:07:23,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:07:23,743 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]=== [2020-12-23 06:07:23,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:23,745 INFO L82 PathProgramCache]: Analyzing trace with hash -123745795, now seen corresponding path program 3 times [2020-12-23 06:07:23,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:23,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022145295] [2020-12-23 06:07:23,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:23,904 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-23 06:07:23,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022145295] [2020-12-23 06:07:23,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449400511] [2020-12-23 06:07:23,905 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 [2020-12-23 06:07:24,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 06:07:24,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:07:24,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 06:07:24,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:07:24,786 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-12-23 06:07:24,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:07:24,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2020-12-23 06:07:24,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003888438] [2020-12-23 06:07:24,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 06:07:24,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:07:24,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 06:07:24,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-12-23 06:07:24,792 INFO L87 Difference]: Start difference. First operand 414 states and 584 transitions. Second operand 11 states. [2020-12-23 06:07:24,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:07:24,914 INFO L93 Difference]: Finished difference Result 784 states and 1119 transitions. [2020-12-23 06:07:24,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 06:07:24,914 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 111 [2020-12-23 06:07:24,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:07:24,917 INFO L225 Difference]: With dead ends: 784 [2020-12-23 06:07:24,917 INFO L226 Difference]: Without dead ends: 448 [2020-12-23 06:07:24,918 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 [2020-12-23 06:07:24,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-12-23 06:07:24,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 432. [2020-12-23 06:07:24,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2020-12-23 06:07:24,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 604 transitions. [2020-12-23 06:07:24,937 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 604 transitions. Word has length 111 [2020-12-23 06:07:24,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:07:24,937 INFO L481 AbstractCegarLoop]: Abstraction has 432 states and 604 transitions. [2020-12-23 06:07:24,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 06:07:24,937 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 604 transitions. [2020-12-23 06:07:24,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 06:07:24,939 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:24,939 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] [2020-12-23 06:07:25,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 06:07:25,153 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]=== [2020-12-23 06:07:25,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:25,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1987637000, now seen corresponding path program 4 times [2020-12-23 06:07:25,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:25,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824015114] [2020-12-23 06:07:25,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:25,380 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-23 06:07:25,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824015114] [2020-12-23 06:07:25,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916255653] [2020-12-23 06:07:25,381 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 [2020-12-23 06:07:25,523 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 06:07:25,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:07:25,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 06:07:25,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:07:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2020-12-23 06:07:25,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:07:25,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2020-12-23 06:07:25,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080489924] [2020-12-23 06:07:25,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 06:07:25,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:07:25,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 06:07:25,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-12-23 06:07:25,661 INFO L87 Difference]: Start difference. First operand 432 states and 604 transitions. Second operand 12 states. [2020-12-23 06:07:25,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:07:25,798 INFO L93 Difference]: Finished difference Result 812 states and 1152 transitions. [2020-12-23 06:07:25,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 06:07:25,799 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 127 [2020-12-23 06:07:25,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:07:25,801 INFO L225 Difference]: With dead ends: 812 [2020-12-23 06:07:25,801 INFO L226 Difference]: Without dead ends: 473 [2020-12-23 06:07:25,802 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 [2020-12-23 06:07:25,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2020-12-23 06:07:25,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 455. [2020-12-23 06:07:25,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-12-23 06:07:25,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 629 transitions. [2020-12-23 06:07:25,822 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 629 transitions. Word has length 127 [2020-12-23 06:07:25,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:07:25,822 INFO L481 AbstractCegarLoop]: Abstraction has 455 states and 629 transitions. [2020-12-23 06:07:25,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 06:07:25,822 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 629 transitions. [2020-12-23 06:07:25,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-23 06:07:25,824 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:25,824 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] [2020-12-23 06:07:26,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 06:07:26,039 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]=== [2020-12-23 06:07:26,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:26,040 INFO L82 PathProgramCache]: Analyzing trace with hash 50275136, now seen corresponding path program 5 times [2020-12-23 06:07:26,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:26,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413257405] [2020-12-23 06:07:26,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:26,292 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-23 06:07:26,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413257405] [2020-12-23 06:07:26,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761136219] [2020-12-23 06:07:26,295 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 [2020-12-23 06:07:26,617 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-12-23 06:07:26,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:07:26,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 06:07:26,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:07:26,789 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2020-12-23 06:07:26,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:07:26,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2020-12-23 06:07:26,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012676778] [2020-12-23 06:07:26,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-23 06:07:26,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:07:26,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-23 06:07:26,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-12-23 06:07:26,791 INFO L87 Difference]: Start difference. First operand 455 states and 629 transitions. Second operand 14 states. [2020-12-23 06:07:26,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:07:26,959 INFO L93 Difference]: Finished difference Result 839 states and 1181 transitions. [2020-12-23 06:07:26,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 06:07:26,960 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 142 [2020-12-23 06:07:26,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:07:26,963 INFO L225 Difference]: With dead ends: 839 [2020-12-23 06:07:26,963 INFO L226 Difference]: Without dead ends: 492 [2020-12-23 06:07:26,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-12-23 06:07:26,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-12-23 06:07:26,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 478. [2020-12-23 06:07:26,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-12-23 06:07:26,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 654 transitions. [2020-12-23 06:07:26,984 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 654 transitions. Word has length 142 [2020-12-23 06:07:26,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:07:26,985 INFO L481 AbstractCegarLoop]: Abstraction has 478 states and 654 transitions. [2020-12-23 06:07:26,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-23 06:07:26,985 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 654 transitions. [2020-12-23 06:07:26,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-23 06:07:26,987 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:26,987 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] [2020-12-23 06:07:27,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-23 06:07:27,202 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]=== [2020-12-23 06:07:27,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:27,203 INFO L82 PathProgramCache]: Analyzing trace with hash 163656116, now seen corresponding path program 6 times [2020-12-23 06:07:27,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:27,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009247900] [2020-12-23 06:07:27,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:27,457 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 0 proven. 372 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-12-23 06:07:27,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009247900] [2020-12-23 06:07:27,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883210645] [2020-12-23 06:07:27,458 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 [2020-12-23 06:07:29,124 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-12-23 06:07:29,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:07:29,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 06:07:29,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:07:29,276 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2020-12-23 06:07:29,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 06:07:29,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2020-12-23 06:07:29,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989027950] [2020-12-23 06:07:29,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:07:29,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:07:29,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:07:29,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-12-23 06:07:29,279 INFO L87 Difference]: Start difference. First operand 478 states and 654 transitions. Second operand 4 states. [2020-12-23 06:07:29,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:07:29,510 INFO L93 Difference]: Finished difference Result 1448 states and 2090 transitions. [2020-12-23 06:07:29,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:07:29,511 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2020-12-23 06:07:29,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:07:29,517 INFO L225 Difference]: With dead ends: 1448 [2020-12-23 06:07:29,517 INFO L226 Difference]: Without dead ends: 1104 [2020-12-23 06:07:29,518 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 [2020-12-23 06:07:29,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2020-12-23 06:07:29,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 1080. [2020-12-23 06:07:29,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1080 states. [2020-12-23 06:07:29,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1556 transitions. [2020-12-23 06:07:29,565 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1556 transitions. Word has length 157 [2020-12-23 06:07:29,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:07:29,566 INFO L481 AbstractCegarLoop]: Abstraction has 1080 states and 1556 transitions. [2020-12-23 06:07:29,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:07:29,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1556 transitions. [2020-12-23 06:07:29,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-12-23 06:07:29,568 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:29,568 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] [2020-12-23 06:07:29,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:07:29,782 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]=== [2020-12-23 06:07:29,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:29,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1672867707, now seen corresponding path program 1 times [2020-12-23 06:07:29,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:29,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822410046] [2020-12-23 06:07:29,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:29,975 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 372 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-12-23 06:07:29,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822410046] [2020-12-23 06:07:29,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263077033] [2020-12-23 06:07:29,976 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 [2020-12-23 06:07:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:30,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 06:07:30,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:07:30,433 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 372 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-12-23 06:07:30,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:07:30,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-12-23 06:07:30,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180672605] [2020-12-23 06:07:30,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 06:07:30,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:07:30,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 06:07:30,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-23 06:07:30,436 INFO L87 Difference]: Start difference. First operand 1080 states and 1556 transitions. Second operand 12 states. [2020-12-23 06:07:30,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:07:30,576 INFO L93 Difference]: Finished difference Result 2066 states and 3006 transitions. [2020-12-23 06:07:30,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 06:07:30,577 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 167 [2020-12-23 06:07:30,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:07:30,583 INFO L225 Difference]: With dead ends: 2066 [2020-12-23 06:07:30,583 INFO L226 Difference]: Without dead ends: 1109 [2020-12-23 06:07:30,586 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 [2020-12-23 06:07:30,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2020-12-23 06:07:30,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1095. [2020-12-23 06:07:30,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1095 states. [2020-12-23 06:07:30,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1573 transitions. [2020-12-23 06:07:30,634 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1573 transitions. Word has length 167 [2020-12-23 06:07:30,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:07:30,634 INFO L481 AbstractCegarLoop]: Abstraction has 1095 states and 1573 transitions. [2020-12-23 06:07:30,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 06:07:30,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1573 transitions. [2020-12-23 06:07:30,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-12-23 06:07:30,637 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:30,637 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] [2020-12-23 06:07:30,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 06:07:30,853 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]=== [2020-12-23 06:07:30,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:30,854 INFO L82 PathProgramCache]: Analyzing trace with hash -391986353, now seen corresponding path program 2 times [2020-12-23 06:07:30,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:30,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456090009] [2020-12-23 06:07:30,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:31,114 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-12-23 06:07:31,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456090009] [2020-12-23 06:07:31,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354578963] [2020-12-23 06:07:31,115 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 [2020-12-23 06:07:31,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 06:07:31,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:07:31,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 06:07:31,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:07:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-12-23 06:07:31,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:07:31,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-12-23 06:07:31,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418289647] [2020-12-23 06:07:31,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 06:07:31,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:07:31,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 06:07:31,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-12-23 06:07:31,641 INFO L87 Difference]: Start difference. First operand 1095 states and 1573 transitions. Second operand 13 states. [2020-12-23 06:07:31,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:07:31,767 INFO L93 Difference]: Finished difference Result 2081 states and 3023 transitions. [2020-12-23 06:07:31,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 06:07:31,768 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 180 [2020-12-23 06:07:31,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:07:31,773 INFO L225 Difference]: With dead ends: 2081 [2020-12-23 06:07:31,774 INFO L226 Difference]: Without dead ends: 1124 [2020-12-23 06:07:31,776 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 [2020-12-23 06:07:31,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2020-12-23 06:07:31,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1110. [2020-12-23 06:07:31,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1110 states. [2020-12-23 06:07:31,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1590 transitions. [2020-12-23 06:07:31,820 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1590 transitions. Word has length 180 [2020-12-23 06:07:31,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:07:31,820 INFO L481 AbstractCegarLoop]: Abstraction has 1110 states and 1590 transitions. [2020-12-23 06:07:31,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 06:07:31,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1590 transitions. [2020-12-23 06:07:31,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-12-23 06:07:31,823 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:31,823 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] [2020-12-23 06:07:32,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 06:07:32,037 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]=== [2020-12-23 06:07:32,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:32,038 INFO L82 PathProgramCache]: Analyzing trace with hash -629380923, now seen corresponding path program 3 times [2020-12-23 06:07:32,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:32,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821232064] [2020-12-23 06:07:32,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:32,284 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-12-23 06:07:32,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821232064] [2020-12-23 06:07:32,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103154910] [2020-12-23 06:07:32,285 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 [2020-12-23 06:07:33,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-23 06:07:33,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:07:33,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 06:07:33,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:07:33,699 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2020-12-23 06:07:33,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:07:33,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6] total 17 [2020-12-23 06:07:33,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88786261] [2020-12-23 06:07:33,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-23 06:07:33,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:07:33,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-23 06:07:33,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2020-12-23 06:07:33,701 INFO L87 Difference]: Start difference. First operand 1110 states and 1590 transitions. Second operand 17 states. [2020-12-23 06:07:33,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:07:33,907 INFO L93 Difference]: Finished difference Result 2101 states and 3046 transitions. [2020-12-23 06:07:33,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 06:07:33,907 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 193 [2020-12-23 06:07:33,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:07:33,913 INFO L225 Difference]: With dead ends: 2101 [2020-12-23 06:07:33,913 INFO L226 Difference]: Without dead ends: 1144 [2020-12-23 06:07:33,914 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 [2020-12-23 06:07:33,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2020-12-23 06:07:33,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 1128. [2020-12-23 06:07:33,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1128 states. [2020-12-23 06:07:33,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1610 transitions. [2020-12-23 06:07:33,958 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1610 transitions. Word has length 193 [2020-12-23 06:07:33,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:07:33,959 INFO L481 AbstractCegarLoop]: Abstraction has 1128 states and 1610 transitions. [2020-12-23 06:07:33,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-23 06:07:33,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1610 transitions. [2020-12-23 06:07:33,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-12-23 06:07:33,962 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:33,962 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] [2020-12-23 06:07:34,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:07:34,176 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]=== [2020-12-23 06:07:34,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:34,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1822037206, now seen corresponding path program 4 times [2020-12-23 06:07:34,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:34,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743695197] [2020-12-23 06:07:34,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 0 proven. 726 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-12-23 06:07:34,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743695197] [2020-12-23 06:07:34,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424282979] [2020-12-23 06:07:34,418 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 [2020-12-23 06:07:34,781 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 06:07:34,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:07:34,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 1003 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-23 06:07:34,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:07:34,989 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 0 proven. 726 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-12-23 06:07:34,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:07:34,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-12-23 06:07:34,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215152052] [2020-12-23 06:07:34,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 06:07:34,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:07:34,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 06:07:34,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-12-23 06:07:34,991 INFO L87 Difference]: Start difference. First operand 1128 states and 1610 transitions. Second operand 15 states. [2020-12-23 06:07:35,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:07:35,132 INFO L93 Difference]: Finished difference Result 2117 states and 3063 transitions. [2020-12-23 06:07:35,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 06:07:35,133 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 209 [2020-12-23 06:07:35,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:07:35,139 INFO L225 Difference]: With dead ends: 2117 [2020-12-23 06:07:35,139 INFO L226 Difference]: Without dead ends: 1157 [2020-12-23 06:07:35,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-12-23 06:07:35,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2020-12-23 06:07:35,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1143. [2020-12-23 06:07:35,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1143 states. [2020-12-23 06:07:35,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1627 transitions. [2020-12-23 06:07:35,184 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1627 transitions. Word has length 209 [2020-12-23 06:07:35,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:07:35,185 INFO L481 AbstractCegarLoop]: Abstraction has 1143 states and 1627 transitions. [2020-12-23 06:07:35,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 06:07:35,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1627 transitions. [2020-12-23 06:07:35,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-12-23 06:07:35,188 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:35,188 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] [2020-12-23 06:07:35,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:07:35,404 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]=== [2020-12-23 06:07:35,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:35,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1449230708, now seen corresponding path program 5 times [2020-12-23 06:07:35,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:35,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863886011] [2020-12-23 06:07:35,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:35,706 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-12-23 06:07:35,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863886011] [2020-12-23 06:07:35,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576860212] [2020-12-23 06:07:35,706 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 [2020-12-23 06:07:36,387 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-12-23 06:07:36,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:07:36,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 06:07:36,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:07:36,628 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 908 trivial. 0 not checked. [2020-12-23 06:07:36,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:07:36,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5] total 18 [2020-12-23 06:07:36,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664225246] [2020-12-23 06:07:36,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-23 06:07:36,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:07:36,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-23 06:07:36,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2020-12-23 06:07:36,633 INFO L87 Difference]: Start difference. First operand 1143 states and 1627 transitions. Second operand 18 states. [2020-12-23 06:07:37,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:07:37,311 INFO L93 Difference]: Finished difference Result 2472 states and 3564 transitions. [2020-12-23 06:07:37,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-23 06:07:37,312 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 222 [2020-12-23 06:07:37,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:07:37,320 INFO L225 Difference]: With dead ends: 2472 [2020-12-23 06:07:37,320 INFO L226 Difference]: Without dead ends: 1512 [2020-12-23 06:07:37,323 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 [2020-12-23 06:07:37,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2020-12-23 06:07:37,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1462. [2020-12-23 06:07:37,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1462 states. [2020-12-23 06:07:37,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 2098 transitions. [2020-12-23 06:07:37,379 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 2098 transitions. Word has length 222 [2020-12-23 06:07:37,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:07:37,380 INFO L481 AbstractCegarLoop]: Abstraction has 1462 states and 2098 transitions. [2020-12-23 06:07:37,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-23 06:07:37,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 2098 transitions. [2020-12-23 06:07:37,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-12-23 06:07:37,384 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:37,384 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] [2020-12-23 06:07:37,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:07:37,598 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]=== [2020-12-23 06:07:37,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:37,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1268209989, now seen corresponding path program 6 times [2020-12-23 06:07:37,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:37,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181008151] [2020-12-23 06:07:37,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:37,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1131 backedges. 0 proven. 1027 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-12-23 06:07:37,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181008151] [2020-12-23 06:07:37,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968246087] [2020-12-23 06:07:37,882 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 [2020-12-23 06:07:41,836 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-12-23 06:07:41,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:07:41,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 06:07:41,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:07:42,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1131 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1109 trivial. 0 not checked. [2020-12-23 06:07:42,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:07:42,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 21 [2020-12-23 06:07:42,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458473772] [2020-12-23 06:07:42,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-23 06:07:42,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:07:42,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-23 06:07:42,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2020-12-23 06:07:42,137 INFO L87 Difference]: Start difference. First operand 1462 states and 2098 transitions. Second operand 21 states. [2020-12-23 06:07:42,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:07:42,358 INFO L93 Difference]: Finished difference Result 2760 states and 4011 transitions. [2020-12-23 06:07:42,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-23 06:07:42,359 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 245 [2020-12-23 06:07:42,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:07:42,366 INFO L225 Difference]: With dead ends: 2760 [2020-12-23 06:07:42,367 INFO L226 Difference]: Without dead ends: 1496 [2020-12-23 06:07:42,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2020-12-23 06:07:42,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2020-12-23 06:07:42,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1480. [2020-12-23 06:07:42,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1480 states. [2020-12-23 06:07:42,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 2118 transitions. [2020-12-23 06:07:42,419 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 2118 transitions. Word has length 245 [2020-12-23 06:07:42,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:07:42,419 INFO L481 AbstractCegarLoop]: Abstraction has 1480 states and 2118 transitions. [2020-12-23 06:07:42,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-23 06:07:42,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 2118 transitions. [2020-12-23 06:07:42,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-12-23 06:07:42,423 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:42,424 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] [2020-12-23 06:07:42,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-23 06:07:42,638 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]=== [2020-12-23 06:07:42,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:42,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1416348790, now seen corresponding path program 7 times [2020-12-23 06:07:42,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:42,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644188172] [2020-12-23 06:07:42,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:43,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 0 proven. 1197 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-12-23 06:07:43,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644188172] [2020-12-23 06:07:43,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062177064] [2020-12-23 06:07:43,020 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 [2020-12-23 06:07:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:43,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-23 06:07:43,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:07:43,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 0 proven. 1197 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-12-23 06:07:43,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:07:43,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-12-23 06:07:43,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916983148] [2020-12-23 06:07:43,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-23 06:07:43,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:07:43,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-23 06:07:43,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-12-23 06:07:43,666 INFO L87 Difference]: Start difference. First operand 1480 states and 2118 transitions. Second operand 18 states. [2020-12-23 06:07:43,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:07:43,863 INFO L93 Difference]: Finished difference Result 2776 states and 4028 transitions. [2020-12-23 06:07:43,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 06:07:43,864 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 261 [2020-12-23 06:07:43,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:07:43,872 INFO L225 Difference]: With dead ends: 2776 [2020-12-23 06:07:43,872 INFO L226 Difference]: Without dead ends: 1509 [2020-12-23 06:07:43,874 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 [2020-12-23 06:07:43,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2020-12-23 06:07:43,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1495. [2020-12-23 06:07:43,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1495 states. [2020-12-23 06:07:43,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 2135 transitions. [2020-12-23 06:07:43,927 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 2135 transitions. Word has length 261 [2020-12-23 06:07:43,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:07:43,927 INFO L481 AbstractCegarLoop]: Abstraction has 1495 states and 2135 transitions. [2020-12-23 06:07:43,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-23 06:07:43,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 2135 transitions. [2020-12-23 06:07:43,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-12-23 06:07:43,932 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:43,933 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] [2020-12-23 06:07:44,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-23 06:07:44,148 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]=== [2020-12-23 06:07:44,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:44,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1457498560, now seen corresponding path program 8 times [2020-12-23 06:07:44,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:44,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012975712] [2020-12-23 06:07:44,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:44,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1497 backedges. 0 proven. 1380 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-12-23 06:07:44,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012975712] [2020-12-23 06:07:44,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854249612] [2020-12-23 06:07:44,515 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 [2020-12-23 06:07:44,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 06:07:44,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:07:44,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 06:07:44,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:07:45,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1497 backedges. 0 proven. 1380 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-12-23 06:07:45,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:07:45,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-12-23 06:07:45,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979847105] [2020-12-23 06:07:45,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-23 06:07:45,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:07:45,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-23 06:07:45,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-12-23 06:07:45,162 INFO L87 Difference]: Start difference. First operand 1495 states and 2135 transitions. Second operand 19 states. [2020-12-23 06:07:45,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:07:45,328 INFO L93 Difference]: Finished difference Result 2791 states and 4045 transitions. [2020-12-23 06:07:45,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-23 06:07:45,328 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 274 [2020-12-23 06:07:45,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:07:45,336 INFO L225 Difference]: With dead ends: 2791 [2020-12-23 06:07:45,336 INFO L226 Difference]: Without dead ends: 1524 [2020-12-23 06:07:45,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-12-23 06:07:45,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2020-12-23 06:07:45,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1510. [2020-12-23 06:07:45,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1510 states. [2020-12-23 06:07:45,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 2152 transitions. [2020-12-23 06:07:45,409 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 2152 transitions. Word has length 274 [2020-12-23 06:07:45,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:07:45,410 INFO L481 AbstractCegarLoop]: Abstraction has 1510 states and 2152 transitions. [2020-12-23 06:07:45,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-23 06:07:45,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 2152 transitions. [2020-12-23 06:07:45,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-12-23 06:07:45,412 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:45,413 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] [2020-12-23 06:07:45,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:07:45,627 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]=== [2020-12-23 06:07:45,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:45,628 INFO L82 PathProgramCache]: Analyzing trace with hash -691786570, now seen corresponding path program 9 times [2020-12-23 06:07:45,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:45,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723883456] [2020-12-23 06:07:45,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:46,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 0 proven. 1576 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-12-23 06:07:46,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723883456] [2020-12-23 06:07:46,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713389724] [2020-12-23 06:07:46,073 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 [2020-12-23 06:07:48,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-12-23 06:07:48,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:07:48,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 06:07:48,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:07:48,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 36 proven. 30 refuted. 0 times theorem prover too weak. 1627 trivial. 0 not checked. [2020-12-23 06:07:48,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:07:48,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 6] total 23 [2020-12-23 06:07:48,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343928457] [2020-12-23 06:07:48,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-23 06:07:48,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:07:48,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-23 06:07:48,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2020-12-23 06:07:48,384 INFO L87 Difference]: Start difference. First operand 1510 states and 2152 transitions. Second operand 23 states. [2020-12-23 06:07:49,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:07:49,317 INFO L93 Difference]: Finished difference Result 3158 states and 4552 transitions. [2020-12-23 06:07:49,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-23 06:07:49,318 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 287 [2020-12-23 06:07:49,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:07:49,327 INFO L225 Difference]: With dead ends: 3158 [2020-12-23 06:07:49,328 INFO L226 Difference]: Without dead ends: 1891 [2020-12-23 06:07:49,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=519, Invalid=1041, Unknown=0, NotChecked=0, Total=1560 [2020-12-23 06:07:49,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2020-12-23 06:07:49,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1829. [2020-12-23 06:07:49,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1829 states. [2020-12-23 06:07:49,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2623 transitions. [2020-12-23 06:07:49,397 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2623 transitions. Word has length 287 [2020-12-23 06:07:49,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:07:49,398 INFO L481 AbstractCegarLoop]: Abstraction has 1829 states and 2623 transitions. [2020-12-23 06:07:49,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-23 06:07:49,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2623 transitions. [2020-12-23 06:07:49,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-12-23 06:07:49,401 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:49,401 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] [2020-12-23 06:07:49,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-23 06:07:49,616 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]=== [2020-12-23 06:07:49,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:49,617 INFO L82 PathProgramCache]: Analyzing trace with hash -947832495, now seen corresponding path program 10 times [2020-12-23 06:07:49,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:49,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161014886] [2020-12-23 06:07:49,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:50,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1943 backedges. 0 proven. 1785 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-12-23 06:07:50,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161014886] [2020-12-23 06:07:50,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022197551] [2020-12-23 06:07:50,104 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 [2020-12-23 06:07:50,548 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 06:07:50,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:07:50,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 1280 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 06:07:50,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:07:50,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1943 backedges. 0 proven. 1785 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-12-23 06:07:50,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:07:50,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-12-23 06:07:50,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502481519] [2020-12-23 06:07:50,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-23 06:07:50,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:07:50,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-23 06:07:50,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-12-23 06:07:50,882 INFO L87 Difference]: Start difference. First operand 1829 states and 2623 transitions. Second operand 21 states. [2020-12-23 06:07:51,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:07:51,099 INFO L93 Difference]: Finished difference Result 3429 states and 4987 transitions. [2020-12-23 06:07:51,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-23 06:07:51,100 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 310 [2020-12-23 06:07:51,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:07:51,110 INFO L225 Difference]: With dead ends: 3429 [2020-12-23 06:07:51,110 INFO L226 Difference]: Without dead ends: 1858 [2020-12-23 06:07:51,113 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 [2020-12-23 06:07:51,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2020-12-23 06:07:51,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1844. [2020-12-23 06:07:51,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1844 states. [2020-12-23 06:07:51,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 2640 transitions. [2020-12-23 06:07:51,171 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 2640 transitions. Word has length 310 [2020-12-23 06:07:51,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:07:51,172 INFO L481 AbstractCegarLoop]: Abstraction has 1844 states and 2640 transitions. [2020-12-23 06:07:51,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-23 06:07:51,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 2640 transitions. [2020-12-23 06:07:51,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-12-23 06:07:51,174 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:51,175 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] [2020-12-23 06:07:51,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:07:51,389 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]=== [2020-12-23 06:07:51,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:51,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1108474183, now seen corresponding path program 11 times [2020-12-23 06:07:51,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:51,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658353099] [2020-12-23 06:07:51,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:51,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2165 backedges. 0 proven. 2007 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-12-23 06:07:51,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658353099] [2020-12-23 06:07:51,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248855993] [2020-12-23 06:07:51,885 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 [2020-12-23 06:08:05,233 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2020-12-23 06:08:05,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:08:05,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-23 06:08:05,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:08:05,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2165 backedges. 0 proven. 2007 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-12-23 06:08:05,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:08:05,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-12-23 06:08:05,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867809399] [2020-12-23 06:08:05,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-23 06:08:05,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:08:05,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-23 06:08:05,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-12-23 06:08:05,587 INFO L87 Difference]: Start difference. First operand 1844 states and 2640 transitions. Second operand 22 states. [2020-12-23 06:08:05,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:08:05,799 INFO L93 Difference]: Finished difference Result 3444 states and 5004 transitions. [2020-12-23 06:08:05,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-23 06:08:05,799 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 323 [2020-12-23 06:08:05,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:08:05,809 INFO L225 Difference]: With dead ends: 3444 [2020-12-23 06:08:05,810 INFO L226 Difference]: Without dead ends: 1873 [2020-12-23 06:08:05,813 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 [2020-12-23 06:08:05,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2020-12-23 06:08:05,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1859. [2020-12-23 06:08:05,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1859 states. [2020-12-23 06:08:05,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2657 transitions. [2020-12-23 06:08:05,897 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2657 transitions. Word has length 323 [2020-12-23 06:08:05,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:08:05,897 INFO L481 AbstractCegarLoop]: Abstraction has 1859 states and 2657 transitions. [2020-12-23 06:08:05,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-23 06:08:05,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2657 transitions. [2020-12-23 06:08:05,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-12-23 06:08:05,900 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:08:05,901 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] [2020-12-23 06:08:06,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-23 06:08:06,115 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]=== [2020-12-23 06:08:06,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:08:06,116 INFO L82 PathProgramCache]: Analyzing trace with hash -166766319, now seen corresponding path program 12 times [2020-12-23 06:08:06,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:08:06,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070125137] [2020-12-23 06:08:06,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:08:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:08:06,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2400 backedges. 0 proven. 2242 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-12-23 06:08:06,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070125137] [2020-12-23 06:08:06,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975019651] [2020-12-23 06:08:06,637 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 [2020-12-23 06:08:20,178 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-12-23 06:08:20,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:08:20,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 06:08:20,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:08:20,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2400 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 2365 trivial. 0 not checked. [2020-12-23 06:08:20,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:08:20,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 8] total 28 [2020-12-23 06:08:20,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568402443] [2020-12-23 06:08:20,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-23 06:08:20,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:08:20,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-23 06:08:20,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=498, Unknown=0, NotChecked=0, Total=756 [2020-12-23 06:08:20,652 INFO L87 Difference]: Start difference. First operand 1859 states and 2657 transitions. Second operand 28 states. [2020-12-23 06:08:20,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:08:20,965 INFO L93 Difference]: Finished difference Result 3464 states and 5027 transitions. [2020-12-23 06:08:20,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-23 06:08:20,966 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 336 [2020-12-23 06:08:20,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:08:20,975 INFO L225 Difference]: With dead ends: 3464 [2020-12-23 06:08:20,976 INFO L226 Difference]: Without dead ends: 1893 [2020-12-23 06:08:20,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=258, Invalid=498, Unknown=0, NotChecked=0, Total=756 [2020-12-23 06:08:20,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2020-12-23 06:08:21,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1877. [2020-12-23 06:08:21,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1877 states. [2020-12-23 06:08:21,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 2677 transitions. [2020-12-23 06:08:21,037 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 2677 transitions. Word has length 336 [2020-12-23 06:08:21,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:08:21,037 INFO L481 AbstractCegarLoop]: Abstraction has 1877 states and 2677 transitions. [2020-12-23 06:08:21,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-12-23 06:08:21,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 2677 transitions. [2020-12-23 06:08:21,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-12-23 06:08:21,040 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:08:21,040 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] [2020-12-23 06:08:21,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-23 06:08:21,241 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]=== [2020-12-23 06:08:21,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:08:21,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1803607242, now seen corresponding path program 13 times [2020-12-23 06:08:21,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:08:21,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113218609] [2020-12-23 06:08:21,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:08:21,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:08:21,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 2490 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2020-12-23 06:08:21,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113218609] [2020-12-23 06:08:21,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589051120] [2020-12-23 06:08:21,867 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 [2020-12-23 06:08:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:08:22,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 1396 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 06:08:22,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:08:22,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 2490 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2020-12-23 06:08:22,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:08:22,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-12-23 06:08:22,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146954216] [2020-12-23 06:08:22,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-23 06:08:22,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:08:22,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-23 06:08:22,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-12-23 06:08:22,756 INFO L87 Difference]: Start difference. First operand 1877 states and 2677 transitions. Second operand 24 states. [2020-12-23 06:08:22,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:08:23,000 INFO L93 Difference]: Finished difference Result 3480 states and 5044 transitions. [2020-12-23 06:08:23,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-23 06:08:23,000 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 352 [2020-12-23 06:08:23,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:08:23,009 INFO L225 Difference]: With dead ends: 3480 [2020-12-23 06:08:23,010 INFO L226 Difference]: Without dead ends: 1906 [2020-12-23 06:08:23,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-12-23 06:08:23,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2020-12-23 06:08:23,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1892. [2020-12-23 06:08:23,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1892 states. [2020-12-23 06:08:23,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 2694 transitions. [2020-12-23 06:08:23,080 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 2694 transitions. Word has length 352 [2020-12-23 06:08:23,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:08:23,081 INFO L481 AbstractCegarLoop]: Abstraction has 1892 states and 2694 transitions. [2020-12-23 06:08:23,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-23 06:08:23,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 2694 transitions. [2020-12-23 06:08:23,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-12-23 06:08:23,084 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:08:23,084 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] [2020-12-23 06:08:23,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-23 06:08:23,285 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]=== [2020-12-23 06:08:23,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:08:23,287 INFO L82 PathProgramCache]: Analyzing trace with hash -107901012, now seen corresponding path program 14 times [2020-12-23 06:08:23,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:08:23,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949701715] [2020-12-23 06:08:23,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:08:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:08:23,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2925 backedges. 0 proven. 2751 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2020-12-23 06:08:23,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949701715] [2020-12-23 06:08:23,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54381673] [2020-12-23 06:08:23,902 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 [2020-12-23 06:08:24,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 06:08:24,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:08:24,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 1431 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 06:08:24,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:08:24,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2925 backedges. 0 proven. 2751 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2020-12-23 06:08:24,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:08:24,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-12-23 06:08:24,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557320282] [2020-12-23 06:08:24,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-23 06:08:24,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:08:24,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-23 06:08:24,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2020-12-23 06:08:24,750 INFO L87 Difference]: Start difference. First operand 1892 states and 2694 transitions. Second operand 25 states. [2020-12-23 06:08:24,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:08:24,987 INFO L93 Difference]: Finished difference Result 3495 states and 5061 transitions. [2020-12-23 06:08:24,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-23 06:08:24,988 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 365 [2020-12-23 06:08:24,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:08:24,994 INFO L225 Difference]: With dead ends: 3495 [2020-12-23 06:08:24,994 INFO L226 Difference]: Without dead ends: 1921 [2020-12-23 06:08:24,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2020-12-23 06:08:24,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2020-12-23 06:08:25,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1907. [2020-12-23 06:08:25,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1907 states. [2020-12-23 06:08:25,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 2711 transitions. [2020-12-23 06:08:25,052 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 2711 transitions. Word has length 365 [2020-12-23 06:08:25,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:08:25,052 INFO L481 AbstractCegarLoop]: Abstraction has 1907 states and 2711 transitions. [2020-12-23 06:08:25,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-23 06:08:25,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 2711 transitions. [2020-12-23 06:08:25,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-12-23 06:08:25,055 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:08:25,056 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] [2020-12-23 06:08:25,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:08:25,270 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]=== [2020-12-23 06:08:25,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:08:25,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1895197962, now seen corresponding path program 15 times [2020-12-23 06:08:25,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:08:25,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735652658] [2020-12-23 06:08:25,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:08:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:08:25,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3199 backedges. 0 proven. 3025 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2020-12-23 06:08:25,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735652658] [2020-12-23 06:08:25,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565730681] [2020-12-23 06:08:25,905 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 [2020-12-23 06:08:37,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-23 06:08:37,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:08:37,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 06:08:37,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:08:37,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3199 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 3148 trivial. 0 not checked. [2020-12-23 06:08:37,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:08:37,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9] total 32 [2020-12-23 06:08:37,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641308335] [2020-12-23 06:08:37,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-12-23 06:08:37,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:08:37,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-12-23 06:08:37,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=657, Unknown=0, NotChecked=0, Total=992 [2020-12-23 06:08:37,552 INFO L87 Difference]: Start difference. First operand 1907 states and 2711 transitions. Second operand 32 states. [2020-12-23 06:08:37,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:08:37,876 INFO L93 Difference]: Finished difference Result 3515 states and 5084 transitions. [2020-12-23 06:08:37,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-23 06:08:37,877 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 378 [2020-12-23 06:08:37,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:08:37,882 INFO L225 Difference]: With dead ends: 3515 [2020-12-23 06:08:37,882 INFO L226 Difference]: Without dead ends: 1941 [2020-12-23 06:08:37,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=335, Invalid=657, Unknown=0, NotChecked=0, Total=992 [2020-12-23 06:08:37,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2020-12-23 06:08:37,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1925. [2020-12-23 06:08:37,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1925 states. [2020-12-23 06:08:37,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 2731 transitions. [2020-12-23 06:08:37,940 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 2731 transitions. Word has length 378 [2020-12-23 06:08:37,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:08:37,940 INFO L481 AbstractCegarLoop]: Abstraction has 1925 states and 2731 transitions. [2020-12-23 06:08:37,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-12-23 06:08:37,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 2731 transitions. [2020-12-23 06:08:37,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-12-23 06:08:37,943 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:08:37,944 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] [2020-12-23 06:08:38,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-12-23 06:08:38,145 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]=== [2020-12-23 06:08:38,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:08:38,146 INFO L82 PathProgramCache]: Analyzing trace with hash -430307663, now seen corresponding path program 16 times [2020-12-23 06:08:38,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:08:38,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839945123] [2020-12-23 06:08:38,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:08:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:08:38,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3505 backedges. 0 proven. 3312 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2020-12-23 06:08:38,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839945123] [2020-12-23 06:08:38,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498988482] [2020-12-23 06:08:38,872 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 [2020-12-23 06:08:39,448 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 06:08:39,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:08:39,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 06:08:39,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:08:39,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3505 backedges. 0 proven. 3312 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2020-12-23 06:08:39,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:08:39,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-12-23 06:08:39,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388035243] [2020-12-23 06:08:39,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-23 06:08:39,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:08:39,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-23 06:08:39,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-12-23 06:08:39,893 INFO L87 Difference]: Start difference. First operand 1925 states and 2731 transitions. Second operand 27 states. [2020-12-23 06:08:40,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:08:40,141 INFO L93 Difference]: Finished difference Result 3531 states and 5101 transitions. [2020-12-23 06:08:40,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-23 06:08:40,142 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 394 [2020-12-23 06:08:40,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:08:40,146 INFO L225 Difference]: With dead ends: 3531 [2020-12-23 06:08:40,146 INFO L226 Difference]: Without dead ends: 1954 [2020-12-23 06:08:40,148 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 [2020-12-23 06:08:40,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-12-23 06:08:40,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1940. [2020-12-23 06:08:40,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1940 states. [2020-12-23 06:08:40,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 2748 transitions. [2020-12-23 06:08:40,192 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 2748 transitions. Word has length 394 [2020-12-23 06:08:40,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:08:40,193 INFO L481 AbstractCegarLoop]: Abstraction has 1940 states and 2748 transitions. [2020-12-23 06:08:40,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-12-23 06:08:40,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 2748 transitions. [2020-12-23 06:08:40,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-12-23 06:08:40,196 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:08:40,197 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] [2020-12-23 06:08:40,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:08:40,413 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]=== [2020-12-23 06:08:40,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:08:40,414 INFO L82 PathProgramCache]: Analyzing trace with hash 466517927, now seen corresponding path program 17 times [2020-12-23 06:08:40,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:08:40,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844698400] [2020-12-23 06:08:40,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:08:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:08:41,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3805 backedges. 0 proven. 3612 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2020-12-23 06:08:41,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844698400] [2020-12-23 06:08:41,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612205439] [2020-12-23 06:08:41,088 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 [2020-12-23 06:09:13,113 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2020-12-23 06:09:13,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:09:13,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 1547 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 06:09:13,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:09:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3805 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-12-23 06:09:13,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:09:13,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 10] total 35 [2020-12-23 06:09:13,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124219743] [2020-12-23 06:09:13,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-12-23 06:09:13,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:09:13,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-12-23 06:09:13,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=795, Unknown=0, NotChecked=0, Total=1190 [2020-12-23 06:09:13,722 INFO L87 Difference]: Start difference. First operand 1940 states and 2748 transitions. Second operand 35 states. [2020-12-23 06:09:14,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:09:14,109 INFO L93 Difference]: Finished difference Result 3551 states and 5124 transitions. [2020-12-23 06:09:14,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-23 06:09:14,109 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 407 [2020-12-23 06:09:14,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:09:14,113 INFO L225 Difference]: With dead ends: 3551 [2020-12-23 06:09:14,113 INFO L226 Difference]: Without dead ends: 1974 [2020-12-23 06:09:14,115 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 [2020-12-23 06:09:14,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2020-12-23 06:09:14,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1958. [2020-12-23 06:09:14,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1958 states. [2020-12-23 06:09:14,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 2768 transitions. [2020-12-23 06:09:14,172 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 2768 transitions. Word has length 407 [2020-12-23 06:09:14,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:09:14,172 INFO L481 AbstractCegarLoop]: Abstraction has 1958 states and 2768 transitions. [2020-12-23 06:09:14,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-12-23 06:09:14,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 2768 transitions. [2020-12-23 06:09:14,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-12-23 06:09:14,178 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:09:14,178 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] [2020-12-23 06:09:14,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-23 06:09:14,393 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]=== [2020-12-23 06:09:14,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:09:14,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1531031052, now seen corresponding path program 18 times [2020-12-23 06:09:14,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:09:14,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483858688] [2020-12-23 06:09:14,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:09:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:09:15,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 3925 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2020-12-23 06:09:15,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483858688] [2020-12-23 06:09:15,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144089541] [2020-12-23 06:09:15,178 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 [2020-12-23 06:09:55,948 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2020-12-23 06:09:55,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:09:55,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 1278 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 06:09:56,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:09:56,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 4048 trivial. 0 not checked. [2020-12-23 06:09:56,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:09:56,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 11] total 37 [2020-12-23 06:09:56,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228942453] [2020-12-23 06:09:56,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-12-23 06:09:56,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:09:56,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-12-23 06:09:56,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=432, Invalid=900, Unknown=0, NotChecked=0, Total=1332 [2020-12-23 06:09:56,639 INFO L87 Difference]: Start difference. First operand 1958 states and 2768 transitions. Second operand 37 states. [2020-12-23 06:09:57,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:09:57,035 INFO L93 Difference]: Finished difference Result 3572 states and 5147 transitions. [2020-12-23 06:09:57,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-12-23 06:09:57,035 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 423 [2020-12-23 06:09:57,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:09:57,038 INFO L225 Difference]: With dead ends: 3572 [2020-12-23 06:09:57,039 INFO L226 Difference]: Without dead ends: 1992 [2020-12-23 06:09:57,040 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 [2020-12-23 06:09:57,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2020-12-23 06:09:57,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1976. [2020-12-23 06:09:57,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-12-23 06:09:57,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2788 transitions. [2020-12-23 06:09:57,099 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2788 transitions. Word has length 423 [2020-12-23 06:09:57,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:09:57,100 INFO L481 AbstractCegarLoop]: Abstraction has 1976 states and 2788 transitions. [2020-12-23 06:09:57,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-12-23 06:09:57,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2788 transitions. [2020-12-23 06:09:57,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2020-12-23 06:09:57,104 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:09:57,104 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] [2020-12-23 06:09:57,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-12-23 06:09:57,314 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]=== [2020-12-23 06:09:57,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:09:57,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1708589689, now seen corresponding path program 19 times [2020-12-23 06:09:57,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:09:57,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048145674] [2020-12-23 06:09:57,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:09:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:09:58,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4491 backedges. 0 proven. 4251 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-12-23 06:09:58,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048145674] [2020-12-23 06:09:58,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881707478] [2020-12-23 06:09:58,193 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 [2020-12-23 06:09:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:09:58,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-23 06:09:58,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:09:59,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4491 backedges. 0 proven. 4251 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-12-23 06:09:59,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:09:59,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2020-12-23 06:09:59,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137494262] [2020-12-23 06:09:59,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-23 06:09:59,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:09:59,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-23 06:09:59,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-12-23 06:09:59,180 INFO L87 Difference]: Start difference. First operand 1976 states and 2788 transitions. Second operand 30 states. [2020-12-23 06:09:59,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:09:59,495 INFO L93 Difference]: Finished difference Result 3588 states and 5164 transitions. [2020-12-23 06:09:59,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-23 06:09:59,495 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 439 [2020-12-23 06:09:59,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:09:59,499 INFO L225 Difference]: With dead ends: 3588 [2020-12-23 06:09:59,500 INFO L226 Difference]: Without dead ends: 2005 [2020-12-23 06:09:59,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-12-23 06:09:59,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2005 states. [2020-12-23 06:09:59,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2005 to 1991. [2020-12-23 06:09:59,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1991 states. [2020-12-23 06:09:59,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 2805 transitions. [2020-12-23 06:09:59,555 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 2805 transitions. Word has length 439 [2020-12-23 06:09:59,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:09:59,555 INFO L481 AbstractCegarLoop]: Abstraction has 1991 states and 2805 transitions. [2020-12-23 06:09:59,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-12-23 06:09:59,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 2805 transitions. [2020-12-23 06:09:59,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-12-23 06:09:59,559 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:09:59,560 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] [2020-12-23 06:09:59,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-23 06:09:59,776 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]=== [2020-12-23 06:09:59,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:09:59,777 INFO L82 PathProgramCache]: Analyzing trace with hash -193356719, now seen corresponding path program 20 times [2020-12-23 06:09:59,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:09:59,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357460176] [2020-12-23 06:09:59,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:09:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:10:00,781 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4590 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-12-23 06:10:00,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357460176] [2020-12-23 06:10:00,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446182833] [2020-12-23 06:10:00,782 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 [2020-12-23 06:10:01,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 06:10:01,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:10:01,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 1674 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 06:10:01,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:10:01,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4590 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-12-23 06:10:01,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:10:01,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2020-12-23 06:10:01,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938779607] [2020-12-23 06:10:01,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-12-23 06:10:01,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:10:01,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-12-23 06:10:01,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-12-23 06:10:01,837 INFO L87 Difference]: Start difference. First operand 1991 states and 2805 transitions. Second operand 31 states. [2020-12-23 06:10:02,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:10:02,159 INFO L93 Difference]: Finished difference Result 3603 states and 5181 transitions. [2020-12-23 06:10:02,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-23 06:10:02,159 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 452 [2020-12-23 06:10:02,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:10:02,164 INFO L225 Difference]: With dead ends: 3603 [2020-12-23 06:10:02,164 INFO L226 Difference]: Without dead ends: 2020 [2020-12-23 06:10:02,166 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 [2020-12-23 06:10:02,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2020-12-23 06:10:02,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2006. [2020-12-23 06:10:02,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2006 states. [2020-12-23 06:10:02,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 2822 transitions. [2020-12-23 06:10:02,211 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 2822 transitions. Word has length 452 [2020-12-23 06:10:02,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:10:02,211 INFO L481 AbstractCegarLoop]: Abstraction has 2006 states and 2822 transitions. [2020-12-23 06:10:02,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-12-23 06:10:02,212 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 2822 transitions. [2020-12-23 06:10:02,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-12-23 06:10:02,214 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:10:02,214 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] [2020-12-23 06:10:02,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-23 06:10:02,428 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]=== [2020-12-23 06:10:02,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:10:02,429 INFO L82 PathProgramCache]: Analyzing trace with hash -140847673, now seen corresponding path program 21 times [2020-12-23 06:10:02,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:10:02,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936674624] [2020-12-23 06:10:02,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:10:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:10:03,319 INFO L134 CoverageAnalysis]: Checked inductivity of 5182 backedges. 0 proven. 4942 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-12-23 06:10:03,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936674624] [2020-12-23 06:10:03,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709555132] [2020-12-23 06:10:03,320 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 [2020-12-23 06:10:33,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-12-23 06:10:33,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:10:33,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 06:10:33,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:10:34,331 INFO L134 CoverageAnalysis]: Checked inductivity of 5182 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 5065 trivial. 0 not checked. [2020-12-23 06:10:34,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:10:34,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 12] total 41 [2020-12-23 06:10:34,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499473784] [2020-12-23 06:10:34,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-12-23 06:10:34,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:10:34,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-12-23 06:10:34,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=1110, Unknown=0, NotChecked=0, Total=1640 [2020-12-23 06:10:34,334 INFO L87 Difference]: Start difference. First operand 2006 states and 2822 transitions. Second operand 41 states. [2020-12-23 06:10:34,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:10:34,766 INFO L93 Difference]: Finished difference Result 3623 states and 5204 transitions. [2020-12-23 06:10:34,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-12-23 06:10:34,767 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 465 [2020-12-23 06:10:34,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:10:34,772 INFO L225 Difference]: With dead ends: 3623 [2020-12-23 06:10:34,772 INFO L226 Difference]: Without dead ends: 2040 [2020-12-23 06:10:34,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=1110, Unknown=0, NotChecked=0, Total=1640 [2020-12-23 06:10:34,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2020-12-23 06:10:34,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 2024. [2020-12-23 06:10:34,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2024 states. [2020-12-23 06:10:34,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 2842 transitions. [2020-12-23 06:10:34,841 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 2842 transitions. Word has length 465 [2020-12-23 06:10:34,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:10:34,841 INFO L481 AbstractCegarLoop]: Abstraction has 2024 states and 2842 transitions. [2020-12-23 06:10:34,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-12-23 06:10:34,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 2842 transitions. [2020-12-23 06:10:34,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2020-12-23 06:10:34,845 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:10:34,846 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] [2020-12-23 06:10:35,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-23 06:10:35,062 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]=== [2020-12-23 06:10:35,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:10:35,063 INFO L82 PathProgramCache]: Analyzing trace with hash 876078188, now seen corresponding path program 22 times [2020-12-23 06:10:35,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:10:35,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913176838] [2020-12-23 06:10:35,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:10:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:10:36,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5575 backedges. 0 proven. 5307 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2020-12-23 06:10:36,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913176838] [2020-12-23 06:10:36,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197360554] [2020-12-23 06:10:36,073 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 [2020-12-23 06:10:36,995 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 06:10:36,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:10:37,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 1755 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 06:10:37,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:10:37,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5575 backedges. 0 proven. 5307 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2020-12-23 06:10:37,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:10:37,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2020-12-23 06:10:37,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992432516] [2020-12-23 06:10:37,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-12-23 06:10:37,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:10:37,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-12-23 06:10:37,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-12-23 06:10:37,702 INFO L87 Difference]: Start difference. First operand 2024 states and 2842 transitions. Second operand 33 states. [2020-12-23 06:10:38,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:10:38,062 INFO L93 Difference]: Finished difference Result 3639 states and 5221 transitions. [2020-12-23 06:10:38,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-23 06:10:38,064 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 481 [2020-12-23 06:10:38,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:10:38,068 INFO L225 Difference]: With dead ends: 3639 [2020-12-23 06:10:38,069 INFO L226 Difference]: Without dead ends: 2053 [2020-12-23 06:10:38,072 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 [2020-12-23 06:10:38,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2020-12-23 06:10:38,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 2039. [2020-12-23 06:10:38,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2039 states. [2020-12-23 06:10:38,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 2859 transitions. [2020-12-23 06:10:38,144 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 2859 transitions. Word has length 481 [2020-12-23 06:10:38,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:10:38,144 INFO L481 AbstractCegarLoop]: Abstraction has 2039 states and 2859 transitions. [2020-12-23 06:10:38,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-12-23 06:10:38,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 2859 transitions. [2020-12-23 06:10:38,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2020-12-23 06:10:38,150 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:10:38,150 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] [2020-12-23 06:10:38,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-12-23 06:10:38,365 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]=== [2020-12-23 06:10:38,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:10:38,366 INFO L82 PathProgramCache]: Analyzing trace with hash -226203978, now seen corresponding path program 23 times [2020-12-23 06:10:38,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:10:38,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912104601] [2020-12-23 06:10:38,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:10:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:10:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5953 backedges. 0 proven. 5685 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2020-12-23 06:10:39,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912104601] [2020-12-23 06:10:39,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791827313] [2020-12-23 06:10:39,405 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 [2020-12-23 06:11:19,724 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2020-12-23 06:11:19,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:11:19,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 1790 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-23 06:11:19,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:11:20,350 INFO L134 CoverageAnalysis]: Checked inductivity of 5953 backedges. 0 proven. 5685 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2020-12-23 06:11:20,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:11:20,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2020-12-23 06:11:20,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513467016] [2020-12-23 06:11:20,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-23 06:11:20,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:11:20,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-23 06:11:20,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-12-23 06:11:20,353 INFO L87 Difference]: Start difference. First operand 2039 states and 2859 transitions. Second operand 34 states. [2020-12-23 06:11:20,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:11:20,742 INFO L93 Difference]: Finished difference Result 3654 states and 5238 transitions. [2020-12-23 06:11:20,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-23 06:11:20,742 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 494 [2020-12-23 06:11:20,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:11:20,752 INFO L225 Difference]: With dead ends: 3654 [2020-12-23 06:11:20,752 INFO L226 Difference]: Without dead ends: 2068 [2020-12-23 06:11:20,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-12-23 06:11:20,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2020-12-23 06:11:20,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 2054. [2020-12-23 06:11:20,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2054 states. [2020-12-23 06:11:20,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 2876 transitions. [2020-12-23 06:11:20,824 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 2876 transitions. Word has length 494 [2020-12-23 06:11:20,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:11:20,825 INFO L481 AbstractCegarLoop]: Abstraction has 2054 states and 2876 transitions. [2020-12-23 06:11:20,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-12-23 06:11:20,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 2876 transitions. [2020-12-23 06:11:20,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2020-12-23 06:11:20,830 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:11:20,830 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 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] [2020-12-23 06:11:21,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-12-23 06:11:21,044 INFO L429 AbstractCegarLoop]: === Iteration 40 === [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]=== [2020-12-23 06:11:21,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:11:21,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1170772820, now seen corresponding path program 24 times [2020-12-23 06:11:21,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:11:21,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002886595] [2020-12-23 06:11:21,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:11:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:11:22,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6344 backedges. 0 proven. 6076 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2020-12-23 06:11:22,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002886595] [2020-12-23 06:11:22,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507166482] [2020-12-23 06:11:22,251 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 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true