/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/uthash-2.0.2/uthash_BER_test7-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 04:10:29,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 04:10:29,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 04:10:29,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-01-07 04:10:29,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 04:10:29,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 04:10:29,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 04:10:29,280 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-07 04:10:29,336 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 04:10:29,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 04:10:29,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 04:10:29,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 04:10:29,342 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 04:10:29,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 04:10:29,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 04:10:29,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 04:10:29,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-07 04:10:29,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 04:10:29,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-07 04:10:29,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-07 04:10:29,346 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 04:10:29,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-07 04:10:29,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 04:10:29,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 04:10:29,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 04:10:29,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 04:10:29,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 04:10:29,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 04:10:29,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-07 04:10:29,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 04:10:29,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 04:10:29,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-07 04:10:29,349 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 04:10:29,350 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 04:10:29,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 04:10:29,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 04:10:29,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 04:10:29,858 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 04:10:29,859 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 04:10:29,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2021-01-07 04:10:29,962 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d55f1228e/d1203bb526a24a6db293ab1ccfdf3c74/FLAG2486e3d4a [2021-01-07 04:10:30,746 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 04:10:30,748 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2021-01-07 04:10:30,772 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d55f1228e/d1203bb526a24a6db293ab1ccfdf3c74/FLAG2486e3d4a [2021-01-07 04:10:30,966 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d55f1228e/d1203bb526a24a6db293ab1ccfdf3c74 [2021-01-07 04:10:30,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 04:10:30,972 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 04:10:30,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 04:10:30,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 04:10:30,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 04:10:30,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 04:10:30" (1/1) ... [2021-01-07 04:10:30,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78f13a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:10:30, skipping insertion in model container [2021-01-07 04:10:30,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 04:10:30" (1/1) ... [2021-01-07 04:10:30,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 04:10:31,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-07 04:10:31,580 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/uthash-2.0.2/uthash_BER_test7-1.i[33021,33034] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~user~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],StructAccessExpression[IdentifierExpression[~user~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~_ha_hashv~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_j~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_i~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_k~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[60],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[48],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[56],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem35,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem35,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem36,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[#t~mem36,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem37,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[12],StructAccessExpression[IdentifierExpression[#t~mem37,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem38,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[28],StructAccessExpression[IdentifierExpression[#t~mem38,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem39,],base],StructAccessExpression[IdentifierExpression[#t~mem39,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem41,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[48],StructAccessExpression[IdentifierExpression[#t~mem41,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~users~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem54,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[#t~mem54,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem55,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem55,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~_ha_bkt~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[40],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem67,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem67,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_ha_head~0,],base],StructAccessExpression[IdentifierExpression[~_ha_head~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~_he_new_buckets~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem79,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[#t~mem79,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem89,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[36],StructAccessExpression[IdentifierExpression[#t~mem89,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~_he_bkt_i~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_thh~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_hh_nxt~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_bkt~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_newbkt~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_he_thh~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[~_he_thh~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_he_thh~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[~_he_thh~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem115,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem115,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_he_newbkt~0,],base],StructAccessExpression[IdentifierExpression[~_he_newbkt~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~_he_thh~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem123,],base],StructAccessExpression[IdentifierExpression[#t~mem123,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem124,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[40],StructAccessExpression[IdentifierExpression[#t~mem124,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem134,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[44],StructAccessExpression[IdentifierExpression[#t~mem134,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~_hf_hashv~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_j~1,] left hand side expression in assignment: lhs: VariableLHS[~_hj_i~1,] left hand side expression in assignment: lhs: VariableLHS[~_hj_k~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~_hf_bkt~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~users~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem187,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem187,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem192,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[#t~mem192,],offset],IdentifierExpression[#t~mem194,]]]]] left hand side expression in assignment: lhs: VariableLHS[~users~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem198,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[#t~mem198,],offset],IdentifierExpression[#t~mem200,]]]]] left hand side expression in assignment: lhs: VariableLHS[~_hd_bkt~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_hd_head~0,],base],StructAccessExpression[IdentifierExpression[~_hd_head~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem212,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[#t~mem212,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem215,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem215,],offset]]]] [2021-01-07 04:10:31,717 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/uthash-2.0.2/uthash_BER_test7-1.i[44124,44137] left hand side expression in assignment: lhs: VariableLHS[~user~0,] left hand side expression in assignment: lhs: VariableLHS[~user~0,] [2021-01-07 04:10:31,719 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/uthash-2.0.2/uthash_BER_test7-1.i[44245,44258] [2021-01-07 04:10:31,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 04:10:31,765 INFO L203 MainTranslator]: Completed pre-run [2021-01-07 04:10:31,802 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/uthash-2.0.2/uthash_BER_test7-1.i[33021,33034] left hand side expression in assignment: address: IdentifierExpression[~#i~0,] left hand side expression in assignment: lhs: VariableLHS[~user~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],StructAccessExpression[IdentifierExpression[~user~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~_ha_hashv~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_j~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_i~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_k~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[60],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[48],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[56],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem40,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem40,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem41,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[#t~mem41,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem42,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[12],StructAccessExpression[IdentifierExpression[#t~mem42,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem43,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[28],StructAccessExpression[IdentifierExpression[#t~mem43,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem44,],base],StructAccessExpression[IdentifierExpression[#t~mem44,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem46,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[48],StructAccessExpression[IdentifierExpression[#t~mem46,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~users~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem59,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[#t~mem59,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem60,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem60,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~_ha_bkt~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[40],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem72,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem72,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_ha_head~0,],base],StructAccessExpression[IdentifierExpression[~_ha_head~0,],offset]]] left hand side expression in assignment: address: IdentifierExpression[~#_he_new_buckets~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem86,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[#t~mem86,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem96,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[36],StructAccessExpression[IdentifierExpression[#t~mem96,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~_he_bkt_i~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_thh~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_hh_nxt~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_bkt~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_newbkt~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_he_thh~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[~_he_thh~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_he_thh~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[~_he_thh~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem123,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem123,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_he_newbkt~0,],base],StructAccessExpression[IdentifierExpression[~_he_newbkt~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~_he_thh~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem131,],base],StructAccessExpression[IdentifierExpression[#t~mem131,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem133,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[40],StructAccessExpression[IdentifierExpression[#t~mem133,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem143,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[44],StructAccessExpression[IdentifierExpression[#t~mem143,],offset]]]] left hand side expression in assignment: address: IdentifierExpression[~#i~0,] left hand side expression in assignment: lhs: VariableLHS[~_hf_hashv~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_j~1,] left hand side expression in assignment: lhs: VariableLHS[~_hj_i~1,] left hand side expression in assignment: lhs: VariableLHS[~_hj_k~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~_hf_bkt~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~users~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem198,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem198,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem203,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[#t~mem203,],offset],IdentifierExpression[#t~mem205,]]]]] left hand side expression in assignment: lhs: VariableLHS[~users~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem209,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[#t~mem209,],offset],IdentifierExpression[#t~mem211,]]]]] left hand side expression in assignment: lhs: VariableLHS[~_hd_bkt~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_hd_head~0,],base],StructAccessExpression[IdentifierExpression[~_hd_head~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem223,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[#t~mem223,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem226,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem226,],offset]]]] [2021-01-07 04:10:31,954 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/uthash-2.0.2/uthash_BER_test7-1.i[44124,44137] left hand side expression in assignment: lhs: VariableLHS[~user~0,] left hand side expression in assignment: lhs: VariableLHS[~user~0,] [2021-01-07 04:10:31,957 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/uthash-2.0.2/uthash_BER_test7-1.i[44245,44258] [2021-01-07 04:10:31,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 04:10:32,084 INFO L208 MainTranslator]: Completed translation [2021-01-07 04:10:32,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:10:32 WrapperNode [2021-01-07 04:10:32,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 04:10:32,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 04:10:32,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 04:10:32,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 04:10:32,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:10:32" (1/1) ... [2021-01-07 04:10:32,138 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:10:32" (1/1) ... [2021-01-07 04:10:32,315 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 04:10:32,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 04:10:32,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 04:10:32,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 04:10:32,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:10:32" (1/1) ... [2021-01-07 04:10:32,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:10:32" (1/1) ... [2021-01-07 04:10:32,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:10:32" (1/1) ... [2021-01-07 04:10:32,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:10:32" (1/1) ... [2021-01-07 04:10:32,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:10:32" (1/1) ... [2021-01-07 04:10:32,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:10:32" (1/1) ... [2021-01-07 04:10:32,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:10:32" (1/1) ... [2021-01-07 04:10:32,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 04:10:32,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 04:10:32,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 04:10:32,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 04:10:32,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:10:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 04:10:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-07 04:10:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 04:10:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-01-07 04:10:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-01-07 04:10:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 04:10:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-01-07 04:10:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-01-07 04:10:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 04:10:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-07 04:10:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 04:10:32,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 04:10:34,746 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 04:10:34,747 INFO L299 CfgBuilder]: Removed 73 assume(true) statements. [2021-01-07 04:10:34,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 04:10:34 BoogieIcfgContainer [2021-01-07 04:10:34,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 04:10:34,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 04:10:34,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 04:10:34,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 04:10:34,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 04:10:30" (1/3) ... [2021-01-07 04:10:34,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac1aef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 04:10:34, skipping insertion in model container [2021-01-07 04:10:34,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:10:32" (2/3) ... [2021-01-07 04:10:34,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac1aef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 04:10:34, skipping insertion in model container [2021-01-07 04:10:34,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 04:10:34" (3/3) ... [2021-01-07 04:10:34,759 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test7-1.i [2021-01-07 04:10:34,766 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 04:10:34,773 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-07 04:10:34,794 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-07 04:10:34,826 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 04:10:34,826 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-07 04:10:34,826 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 04:10:34,826 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 04:10:34,827 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 04:10:34,827 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 04:10:34,827 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 04:10:34,827 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 04:10:34,850 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2021-01-07 04:10:34,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-07 04:10:34,857 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:10:34,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:10:34,858 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:10:34,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:10:34,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1366407864, now seen corresponding path program 1 times [2021-01-07 04:10:34,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:10:34,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039995744] [2021-01-07 04:10:34,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:10:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:10:35,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 04:10:35,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039995744] [2021-01-07 04:10:35,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 04:10:35,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 04:10:35,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037024641] [2021-01-07 04:10:35,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-07 04:10:35,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:10:35,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-07 04:10:35,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-07 04:10:35,097 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 2 states. [2021-01-07 04:10:35,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:10:35,183 INFO L93 Difference]: Finished difference Result 361 states and 609 transitions. [2021-01-07 04:10:35,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-07 04:10:35,185 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-01-07 04:10:35,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:10:35,208 INFO L225 Difference]: With dead ends: 361 [2021-01-07 04:10:35,208 INFO L226 Difference]: Without dead ends: 177 [2021-01-07 04:10:35,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-07 04:10:35,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-01-07 04:10:35,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-01-07 04:10:35,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2021-01-07 04:10:35,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 232 transitions. [2021-01-07 04:10:35,314 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 232 transitions. Word has length 8 [2021-01-07 04:10:35,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:10:35,315 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 232 transitions. [2021-01-07 04:10:35,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-07 04:10:35,316 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 232 transitions. [2021-01-07 04:10:35,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-07 04:10:35,318 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:10:35,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:10:35,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 04:10:35,319 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:10:35,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:10:35,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1136278917, now seen corresponding path program 1 times [2021-01-07 04:10:35,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:10:35,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067743121] [2021-01-07 04:10:35,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:10:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:10:35,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 04:10:35,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067743121] [2021-01-07 04:10:35,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 04:10:35,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 04:10:35,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59020530] [2021-01-07 04:10:35,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 04:10:35,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:10:35,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 04:10:35,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 04:10:35,458 INFO L87 Difference]: Start difference. First operand 177 states and 232 transitions. Second operand 4 states. [2021-01-07 04:10:35,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:10:35,991 INFO L93 Difference]: Finished difference Result 382 states and 501 transitions. [2021-01-07 04:10:35,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 04:10:35,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-01-07 04:10:35,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:10:35,994 INFO L225 Difference]: With dead ends: 382 [2021-01-07 04:10:35,995 INFO L226 Difference]: Without dead ends: 295 [2021-01-07 04:10:35,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 04:10:35,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-01-07 04:10:36,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 179. [2021-01-07 04:10:36,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2021-01-07 04:10:36,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 234 transitions. [2021-01-07 04:10:36,013 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 234 transitions. Word has length 10 [2021-01-07 04:10:36,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:10:36,013 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 234 transitions. [2021-01-07 04:10:36,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 04:10:36,013 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 234 transitions. [2021-01-07 04:10:36,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-01-07 04:10:36,016 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:10:36,016 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:10:36,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 04:10:36,017 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:10:36,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:10:36,017 INFO L82 PathProgramCache]: Analyzing trace with hash -2095912151, now seen corresponding path program 1 times [2021-01-07 04:10:36,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:10:36,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323874265] [2021-01-07 04:10:36,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:10:36,045 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:10:36,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1086266904] [2021-01-07 04:10:36,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:10:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:10:36,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-07 04:10:36,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:10:36,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 04:10:36,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323874265] [2021-01-07 04:10:36,408 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 04:10:36,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086266904] [2021-01-07 04:10:36,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 04:10:36,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 04:10:36,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165263203] [2021-01-07 04:10:36,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 04:10:36,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:10:36,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 04:10:36,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 04:10:36,421 INFO L87 Difference]: Start difference. First operand 179 states and 234 transitions. Second operand 3 states. [2021-01-07 04:10:36,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:10:36,525 INFO L93 Difference]: Finished difference Result 375 states and 495 transitions. [2021-01-07 04:10:36,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 04:10:36,526 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2021-01-07 04:10:36,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:10:36,530 INFO L225 Difference]: With dead ends: 375 [2021-01-07 04:10:36,530 INFO L226 Difference]: Without dead ends: 200 [2021-01-07 04:10:36,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 04:10:36,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-01-07 04:10:36,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199. [2021-01-07 04:10:36,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2021-01-07 04:10:36,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 254 transitions. [2021-01-07 04:10:36,572 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 254 transitions. Word has length 62 [2021-01-07 04:10:36,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:10:36,573 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 254 transitions. [2021-01-07 04:10:36,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 04:10:36,573 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 254 transitions. [2021-01-07 04:10:36,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-01-07 04:10:36,578 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:10:36,578 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:10:36,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-07 04:10:36,786 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:10:36,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:10:36,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1305568807, now seen corresponding path program 1 times [2021-01-07 04:10:36,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:10:36,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428406809] [2021-01-07 04:10:36,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:10:36,813 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:10:36,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197044006] [2021-01-07 04:10:36,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:10:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:10:37,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-07 04:10:37,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:10:37,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 04:10:37,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428406809] [2021-01-07 04:10:37,206 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 04:10:37,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197044006] [2021-01-07 04:10:37,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 04:10:37,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 04:10:37,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833049155] [2021-01-07 04:10:37,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 04:10:37,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:10:37,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 04:10:37,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 04:10:37,211 INFO L87 Difference]: Start difference. First operand 199 states and 254 transitions. Second operand 4 states. [2021-01-07 04:10:37,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:10:37,317 INFO L93 Difference]: Finished difference Result 386 states and 496 transitions. [2021-01-07 04:10:37,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 04:10:37,318 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2021-01-07 04:10:37,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:10:37,319 INFO L225 Difference]: With dead ends: 386 [2021-01-07 04:10:37,320 INFO L226 Difference]: Without dead ends: 191 [2021-01-07 04:10:37,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 04:10:37,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-01-07 04:10:37,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 185. [2021-01-07 04:10:37,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2021-01-07 04:10:37,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 233 transitions. [2021-01-07 04:10:37,328 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 233 transitions. Word has length 62 [2021-01-07 04:10:37,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:10:37,329 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 233 transitions. [2021-01-07 04:10:37,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 04:10:37,329 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 233 transitions. [2021-01-07 04:10:37,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-01-07 04:10:37,331 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:10:37,331 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:10:37,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:10:37,546 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:10:37,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:10:37,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1777715509, now seen corresponding path program 1 times [2021-01-07 04:10:37,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:10:37,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036821680] [2021-01-07 04:10:37,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:10:37,571 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:10:37,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009530105] [2021-01-07 04:10:37,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:10:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:10:37,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-07 04:10:37,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:10:37,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 04:10:37,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036821680] [2021-01-07 04:10:37,883 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 04:10:37,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009530105] [2021-01-07 04:10:37,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 04:10:37,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 04:10:37,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237644926] [2021-01-07 04:10:37,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 04:10:37,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:10:37,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 04:10:37,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 04:10:37,885 INFO L87 Difference]: Start difference. First operand 185 states and 233 transitions. Second operand 3 states. [2021-01-07 04:10:38,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:10:38,042 INFO L93 Difference]: Finished difference Result 479 states and 602 transitions. [2021-01-07 04:10:38,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 04:10:38,043 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2021-01-07 04:10:38,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:10:38,045 INFO L225 Difference]: With dead ends: 479 [2021-01-07 04:10:38,045 INFO L226 Difference]: Without dead ends: 298 [2021-01-07 04:10:38,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 04:10:38,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-01-07 04:10:38,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 291. [2021-01-07 04:10:38,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2021-01-07 04:10:38,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 366 transitions. [2021-01-07 04:10:38,057 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 366 transitions. Word has length 62 [2021-01-07 04:10:38,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:10:38,057 INFO L481 AbstractCegarLoop]: Abstraction has 291 states and 366 transitions. [2021-01-07 04:10:38,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 04:10:38,057 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 366 transitions. [2021-01-07 04:10:38,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-01-07 04:10:38,059 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:10:38,059 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:10:38,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:10:38,274 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:10:38,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:10:38,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1300403396, now seen corresponding path program 1 times [2021-01-07 04:10:38,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:10:38,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548957788] [2021-01-07 04:10:38,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:10:38,315 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:10:38,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1829494649] [2021-01-07 04:10:38,316 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:10:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:10:38,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-07 04:10:38,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:10:38,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 04:10:38,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548957788] [2021-01-07 04:10:38,635 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 04:10:38,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829494649] [2021-01-07 04:10:38,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 04:10:38,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 04:10:38,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928279472] [2021-01-07 04:10:38,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 04:10:38,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:10:38,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 04:10:38,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 04:10:38,641 INFO L87 Difference]: Start difference. First operand 291 states and 366 transitions. Second operand 3 states. [2021-01-07 04:10:38,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:10:38,695 INFO L93 Difference]: Finished difference Result 536 states and 683 transitions. [2021-01-07 04:10:38,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 04:10:38,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2021-01-07 04:10:38,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:10:38,698 INFO L225 Difference]: With dead ends: 536 [2021-01-07 04:10:38,698 INFO L226 Difference]: Without dead ends: 293 [2021-01-07 04:10:38,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 04:10:38,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-01-07 04:10:38,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2021-01-07 04:10:38,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2021-01-07 04:10:38,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 368 transitions. [2021-01-07 04:10:38,715 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 368 transitions. Word has length 69 [2021-01-07 04:10:38,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:10:38,715 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 368 transitions. [2021-01-07 04:10:38,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 04:10:38,715 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 368 transitions. [2021-01-07 04:10:38,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-07 04:10:38,721 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:10:38,721 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:10:38,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:10:38,933 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:10:38,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:10:38,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1522577957, now seen corresponding path program 1 times [2021-01-07 04:10:38,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:10:38,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253468397] [2021-01-07 04:10:38,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:10:38,956 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:10:38,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1975310369] [2021-01-07 04:10:38,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:10:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:10:39,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-07 04:10:39,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:10:39,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 04:10:39,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253468397] [2021-01-07 04:10:39,346 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 04:10:39,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975310369] [2021-01-07 04:10:39,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-07 04:10:39,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-01-07 04:10:39,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874681385] [2021-01-07 04:10:39,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 04:10:39,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:10:39,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 04:10:39,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 04:10:39,348 INFO L87 Difference]: Start difference. First operand 293 states and 368 transitions. Second operand 4 states. [2021-01-07 04:10:39,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:10:39,398 INFO L93 Difference]: Finished difference Result 540 states and 687 transitions. [2021-01-07 04:10:39,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 04:10:39,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2021-01-07 04:10:39,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:10:39,402 INFO L225 Difference]: With dead ends: 540 [2021-01-07 04:10:39,402 INFO L226 Difference]: Without dead ends: 295 [2021-01-07 04:10:39,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 04:10:39,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-01-07 04:10:39,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2021-01-07 04:10:39,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2021-01-07 04:10:39,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 370 transitions. [2021-01-07 04:10:39,415 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 370 transitions. Word has length 71 [2021-01-07 04:10:39,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:10:39,415 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 370 transitions. [2021-01-07 04:10:39,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 04:10:39,415 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 370 transitions. [2021-01-07 04:10:39,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-07 04:10:39,416 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:10:39,417 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:10:39,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-07 04:10:39,632 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:10:39,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:10:39,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1094780836, now seen corresponding path program 2 times [2021-01-07 04:10:39,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:10:39,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577096965] [2021-01-07 04:10:39,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:10:39,666 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:10:39,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1582563338] [2021-01-07 04:10:39,670 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:10:39,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-07 04:10:39,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 04:10:39,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-07 04:10:39,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:10:39,894 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-01-07 04:10:39,896 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:10:39,898 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:10:39,900 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 04:10:39,901 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2021-01-07 04:10:39,919 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-01-07 04:10:39,922 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:10:39,926 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:10:39,926 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 04:10:39,927 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-01-07 04:10:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-07 04:10:39,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577096965] [2021-01-07 04:10:39,937 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 04:10:39,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582563338] [2021-01-07 04:10:39,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 04:10:39,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 04:10:39,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078346658] [2021-01-07 04:10:39,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 04:10:39,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:10:39,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 04:10:39,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 04:10:39,940 INFO L87 Difference]: Start difference. First operand 295 states and 370 transitions. Second operand 4 states. [2021-01-07 04:10:40,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:10:40,389 INFO L93 Difference]: Finished difference Result 383 states and 487 transitions. [2021-01-07 04:10:40,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 04:10:40,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2021-01-07 04:10:40,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:10:40,393 INFO L225 Difference]: With dead ends: 383 [2021-01-07 04:10:40,393 INFO L226 Difference]: Without dead ends: 379 [2021-01-07 04:10:40,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 04:10:40,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-01-07 04:10:40,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 297. [2021-01-07 04:10:40,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2021-01-07 04:10:40,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 372 transitions. [2021-01-07 04:10:40,426 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 372 transitions. Word has length 73 [2021-01-07 04:10:40,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:10:40,428 INFO L481 AbstractCegarLoop]: Abstraction has 297 states and 372 transitions. [2021-01-07 04:10:40,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 04:10:40,429 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 372 transitions. [2021-01-07 04:10:40,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-01-07 04:10:40,438 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:10:40,438 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:10:40,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:10:40,656 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:10:40,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:10:40,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1878713718, now seen corresponding path program 1 times [2021-01-07 04:10:40,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:10:40,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455318358] [2021-01-07 04:10:40,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:10:40,678 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:10:40,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1160469254] [2021-01-07 04:10:40,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:10:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:10:40,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-07 04:10:40,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:10:41,058 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-07 04:10:41,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455318358] [2021-01-07 04:10:41,058 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 04:10:41,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160469254] [2021-01-07 04:10:41,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 04:10:41,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 04:10:41,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680805679] [2021-01-07 04:10:41,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 04:10:41,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:10:41,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 04:10:41,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 04:10:41,063 INFO L87 Difference]: Start difference. First operand 297 states and 372 transitions. Second operand 3 states. [2021-01-07 04:10:41,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:10:41,162 INFO L93 Difference]: Finished difference Result 487 states and 631 transitions. [2021-01-07 04:10:41,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 04:10:41,163 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2021-01-07 04:10:41,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:10:41,165 INFO L225 Difference]: With dead ends: 487 [2021-01-07 04:10:41,165 INFO L226 Difference]: Without dead ends: 339 [2021-01-07 04:10:41,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 04:10:41,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-01-07 04:10:41,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 337. [2021-01-07 04:10:41,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2021-01-07 04:10:41,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 412 transitions. [2021-01-07 04:10:41,178 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 412 transitions. Word has length 107 [2021-01-07 04:10:41,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:10:41,178 INFO L481 AbstractCegarLoop]: Abstraction has 337 states and 412 transitions. [2021-01-07 04:10:41,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 04:10:41,179 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 412 transitions. [2021-01-07 04:10:41,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-01-07 04:10:41,180 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:10:41,180 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:10:41,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:10:41,394 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:10:41,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:10:41,395 INFO L82 PathProgramCache]: Analyzing trace with hash 2096048526, now seen corresponding path program 1 times [2021-01-07 04:10:41,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:10:41,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493669776] [2021-01-07 04:10:41,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:10:41,414 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:10:41,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1933617694] [2021-01-07 04:10:41,415 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:10:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:10:41,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-07 04:10:41,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:10:41,834 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-07 04:10:41,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493669776] [2021-01-07 04:10:41,835 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 04:10:41,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933617694] [2021-01-07 04:10:41,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 04:10:41,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 04:10:41,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700251435] [2021-01-07 04:10:41,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 04:10:41,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:10:41,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 04:10:41,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 04:10:41,837 INFO L87 Difference]: Start difference. First operand 337 states and 412 transitions. Second operand 4 states. [2021-01-07 04:10:41,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:10:41,939 INFO L93 Difference]: Finished difference Result 502 states and 626 transitions. [2021-01-07 04:10:41,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 04:10:41,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2021-01-07 04:10:41,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:10:41,942 INFO L225 Difference]: With dead ends: 502 [2021-01-07 04:10:41,942 INFO L226 Difference]: Without dead ends: 314 [2021-01-07 04:10:41,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 04:10:41,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-01-07 04:10:41,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 309. [2021-01-07 04:10:41,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2021-01-07 04:10:41,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 370 transitions. [2021-01-07 04:10:41,955 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 370 transitions. Word has length 107 [2021-01-07 04:10:41,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:10:41,955 INFO L481 AbstractCegarLoop]: Abstraction has 309 states and 370 transitions. [2021-01-07 04:10:41,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 04:10:41,955 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 370 transitions. [2021-01-07 04:10:41,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-01-07 04:10:41,957 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:10:41,957 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:10:42,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-07 04:10:42,171 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:10:42,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:10:42,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1213199680, now seen corresponding path program 1 times [2021-01-07 04:10:42,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:10:42,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064580630] [2021-01-07 04:10:42,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:10:42,202 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:10:42,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [335887021] [2021-01-07 04:10:42,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:10:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:10:42,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-07 04:10:42,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:10:42,622 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-07 04:10:42,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064580630] [2021-01-07 04:10:42,623 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 04:10:42,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335887021] [2021-01-07 04:10:42,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-07 04:10:42,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-07 04:10:42,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656236475] [2021-01-07 04:10:42,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 04:10:42,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:10:42,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 04:10:42,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-07 04:10:42,625 INFO L87 Difference]: Start difference. First operand 309 states and 370 transitions. Second operand 5 states. [2021-01-07 04:10:42,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:10:42,673 INFO L93 Difference]: Finished difference Result 572 states and 691 transitions. [2021-01-07 04:10:42,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 04:10:42,673 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2021-01-07 04:10:42,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:10:42,675 INFO L225 Difference]: With dead ends: 572 [2021-01-07 04:10:42,675 INFO L226 Difference]: Without dead ends: 311 [2021-01-07 04:10:42,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-07 04:10:42,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-01-07 04:10:42,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2021-01-07 04:10:42,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2021-01-07 04:10:42,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 372 transitions. [2021-01-07 04:10:42,688 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 372 transitions. Word has length 107 [2021-01-07 04:10:42,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:10:42,688 INFO L481 AbstractCegarLoop]: Abstraction has 311 states and 372 transitions. [2021-01-07 04:10:42,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 04:10:42,688 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 372 transitions. [2021-01-07 04:10:42,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-01-07 04:10:42,690 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:10:42,690 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:10:42,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:10:42,905 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:10:42,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:10:42,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1565711905, now seen corresponding path program 2 times [2021-01-07 04:10:42,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:10:42,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116460163] [2021-01-07 04:10:42,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:10:42,927 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:10:42,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1687696739] [2021-01-07 04:10:42,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:10:43,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 04:10:43,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 04:10:43,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-07 04:10:43,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:10:43,371 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 04:10:43,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116460163] [2021-01-07 04:10:43,372 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 04:10:43,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687696739] [2021-01-07 04:10:43,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-07 04:10:43,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-07 04:10:43,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507611804] [2021-01-07 04:10:43,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 04:10:43,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:10:43,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 04:10:43,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-01-07 04:10:43,374 INFO L87 Difference]: Start difference. First operand 311 states and 372 transitions. Second operand 6 states. [2021-01-07 04:10:43,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:10:43,429 INFO L93 Difference]: Finished difference Result 576 states and 695 transitions. [2021-01-07 04:10:43,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 04:10:43,429 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2021-01-07 04:10:43,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:10:43,432 INFO L225 Difference]: With dead ends: 576 [2021-01-07 04:10:43,432 INFO L226 Difference]: Without dead ends: 313 [2021-01-07 04:10:43,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-01-07 04:10:43,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-01-07 04:10:43,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2021-01-07 04:10:43,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2021-01-07 04:10:43,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 374 transitions. [2021-01-07 04:10:43,445 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 374 transitions. Word has length 109 [2021-01-07 04:10:43,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:10:43,445 INFO L481 AbstractCegarLoop]: Abstraction has 313 states and 374 transitions. [2021-01-07 04:10:43,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 04:10:43,446 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 374 transitions. [2021-01-07 04:10:43,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-07 04:10:43,447 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:10:43,447 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:10:43,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:10:43,663 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:10:43,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:10:43,664 INFO L82 PathProgramCache]: Analyzing trace with hash -383989728, now seen corresponding path program 3 times [2021-01-07 04:10:43,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:10:43,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482957010] [2021-01-07 04:10:43,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:10:43,703 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:10:43,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1179999844] [2021-01-07 04:10:43,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:10:44,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-07 04:10:44,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 04:10:44,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-07 04:10:44,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:10:44,260 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-01-07 04:10:44,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482957010] [2021-01-07 04:10:44,261 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 04:10:44,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179999844] [2021-01-07 04:10:44,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 04:10:44,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 04:10:44,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580539580] [2021-01-07 04:10:44,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 04:10:44,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:10:44,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 04:10:44,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 04:10:44,263 INFO L87 Difference]: Start difference. First operand 313 states and 374 transitions. Second operand 4 states. [2021-01-07 04:10:44,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:10:44,613 INFO L93 Difference]: Finished difference Result 644 states and 770 transitions. [2021-01-07 04:10:44,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 04:10:44,614 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2021-01-07 04:10:44,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:10:44,617 INFO L225 Difference]: With dead ends: 644 [2021-01-07 04:10:44,617 INFO L226 Difference]: Without dead ends: 379 [2021-01-07 04:10:44,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 04:10:44,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-01-07 04:10:44,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 372. [2021-01-07 04:10:44,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2021-01-07 04:10:44,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 442 transitions. [2021-01-07 04:10:44,633 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 442 transitions. Word has length 111 [2021-01-07 04:10:44,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:10:44,634 INFO L481 AbstractCegarLoop]: Abstraction has 372 states and 442 transitions. [2021-01-07 04:10:44,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 04:10:44,634 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 442 transitions. [2021-01-07 04:10:44,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-01-07 04:10:44,636 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:10:44,636 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:10:44,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-07 04:10:44,853 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:10:44,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:10:44,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1107954682, now seen corresponding path program 1 times [2021-01-07 04:10:44,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:10:44,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354543657] [2021-01-07 04:10:44,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:10:44,878 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:10:44,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [359468520] [2021-01-07 04:10:44,879 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:10:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:10:45,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-07 04:10:45,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:10:45,348 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-01-07 04:10:45,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354543657] [2021-01-07 04:10:45,349 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 04:10:45,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359468520] [2021-01-07 04:10:45,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-07 04:10:45,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-07 04:10:45,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719168080] [2021-01-07 04:10:45,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 04:10:45,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:10:45,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 04:10:45,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-07 04:10:45,359 INFO L87 Difference]: Start difference. First operand 372 states and 442 transitions. Second operand 7 states. [2021-01-07 04:10:45,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:10:45,429 INFO L93 Difference]: Finished difference Result 691 states and 827 transitions. [2021-01-07 04:10:45,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 04:10:45,430 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2021-01-07 04:10:45,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:10:45,432 INFO L225 Difference]: With dead ends: 691 [2021-01-07 04:10:45,433 INFO L226 Difference]: Without dead ends: 374 [2021-01-07 04:10:45,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-07 04:10:45,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-01-07 04:10:45,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2021-01-07 04:10:45,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2021-01-07 04:10:45,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 444 transitions. [2021-01-07 04:10:45,448 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 444 transitions. Word has length 118 [2021-01-07 04:10:45,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:10:45,449 INFO L481 AbstractCegarLoop]: Abstraction has 374 states and 444 transitions. [2021-01-07 04:10:45,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 04:10:45,449 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 444 transitions. [2021-01-07 04:10:45,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-01-07 04:10:45,451 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:10:45,451 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:10:45,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-07 04:10:45,666 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:10:45,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:10:45,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1744267321, now seen corresponding path program 2 times [2021-01-07 04:10:45,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:10:45,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470712297] [2021-01-07 04:10:45,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:10:45,685 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:10:45,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [450904726] [2021-01-07 04:10:45,686 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:10:46,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 04:10:46,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 04:10:46,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 04:10:46,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:10:46,236 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 04:10:46,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470712297] [2021-01-07 04:10:46,237 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 04:10:46,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450904726] [2021-01-07 04:10:46,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-07 04:10:46,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-07 04:10:46,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938797403] [2021-01-07 04:10:46,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 04:10:46,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:10:46,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 04:10:46,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-01-07 04:10:46,239 INFO L87 Difference]: Start difference. First operand 374 states and 444 transitions. Second operand 8 states. [2021-01-07 04:10:46,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:10:46,306 INFO L93 Difference]: Finished difference Result 694 states and 830 transitions. [2021-01-07 04:10:46,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-07 04:10:46,306 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 120 [2021-01-07 04:10:46,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:10:46,309 INFO L225 Difference]: With dead ends: 694 [2021-01-07 04:10:46,309 INFO L226 Difference]: Without dead ends: 376 [2021-01-07 04:10:46,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-01-07 04:10:46,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-01-07 04:10:46,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2021-01-07 04:10:46,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2021-01-07 04:10:46,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 446 transitions. [2021-01-07 04:10:46,325 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 446 transitions. Word has length 120 [2021-01-07 04:10:46,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:10:46,325 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 446 transitions. [2021-01-07 04:10:46,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 04:10:46,325 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 446 transitions. [2021-01-07 04:10:46,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-01-07 04:10:46,327 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:10:46,327 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:10:46,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-07 04:10:46,541 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:10:46,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:10:46,541 INFO L82 PathProgramCache]: Analyzing trace with hash -994826982, now seen corresponding path program 3 times [2021-01-07 04:10:46,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:10:46,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964974066] [2021-01-07 04:10:46,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:10:46,567 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:10:46,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1440327874] [2021-01-07 04:10:46,568 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 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