/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_SAX_test7-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 04:40:23,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 04:40:23,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 04:40:23,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-01-07 04:40:23,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 04:40:23,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 04:40:23,840 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 04:40:23,841 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 04:40:23,886 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 04:40:23,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 04:40:23,891 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 04:40:23,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 04:40:23,892 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 04:40:23,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 04:40:23,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 04:40:23,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 04:40:23,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-07 04:40:23,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 04:40:23,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-07 04:40:23,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-07 04:40:23,895 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 04:40:23,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-07 04:40:23,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 04:40:23,896 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 04:40:23,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 04:40:23,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 04:40:23,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 04:40:23,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 04:40:23,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-07 04:40:23,897 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 04:40:23,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 04:40:23,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-07 04:40:23,898 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 04:40:23,898 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 04:40:24,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 04:40:24,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 04:40:24,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 04:40:24,337 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 04:40:24,337 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 04:40:24,338 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-1.i [2021-01-07 04:40:24,419 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f09ebdd90/76c70af29776499dbcdab3ec55ff5788/FLAG4f6fb62ce [2021-01-07 04:40:25,173 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 04:40:25,174 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-1.i [2021-01-07 04:40:25,206 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f09ebdd90/76c70af29776499dbcdab3ec55ff5788/FLAG4f6fb62ce [2021-01-07 04:40:25,409 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f09ebdd90/76c70af29776499dbcdab3ec55ff5788 [2021-01-07 04:40:25,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 04:40:25,415 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 04:40:25,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 04:40:25,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 04:40:25,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 04:40:25,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 04:40:25" (1/1) ... [2021-01-07 04:40:25,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e2ca463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:40:25, skipping insertion in model container [2021-01-07 04:40:25,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 04:40:25" (1/1) ... [2021-01-07 04:40:25,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 04:40:25,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-07 04:40:25,839 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_SAX_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 04:40:26,006 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_SAX_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 04:40:26,012 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_SAX_test7-1.i[44245,44258] [2021-01-07 04:40:26,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 04:40:26,038 INFO L203 MainTranslator]: Completed pre-run [2021-01-07 04:40:26,072 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_SAX_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 04:40:26,174 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_SAX_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 04:40:26,178 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_SAX_test7-1.i[44245,44258] [2021-01-07 04:40:26,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 04:40:26,316 INFO L208 MainTranslator]: Completed translation [2021-01-07 04:40:26,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:40:26 WrapperNode [2021-01-07 04:40:26,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 04:40:26,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 04:40:26,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 04:40:26,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 04:40:26,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:40:26" (1/1) ... [2021-01-07 04:40:26,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:40:26" (1/1) ... [2021-01-07 04:40:26,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 04:40:26,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 04:40:26,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 04:40:26,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 04:40:26,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:40:26" (1/1) ... [2021-01-07 04:40:26,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:40:26" (1/1) ... [2021-01-07 04:40:26,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:40:26" (1/1) ... [2021-01-07 04:40:26,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:40:26" (1/1) ... [2021-01-07 04:40:26,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:40:26" (1/1) ... [2021-01-07 04:40:26,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:40:26" (1/1) ... [2021-01-07 04:40:26,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:40:26" (1/1) ... [2021-01-07 04:40:26,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 04:40:26,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 04:40:26,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 04:40:26,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 04:40:26,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:40:26" (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 04:40:26,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-07 04:40:26,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 04:40:26,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-01-07 04:40:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-01-07 04:40:26,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 04:40:26,725 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-01-07 04:40:26,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-01-07 04:40:26,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 04:40:26,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-07 04:40:26,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 04:40:26,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 04:40:28,457 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 04:40:28,457 INFO L299 CfgBuilder]: Removed 73 assume(true) statements. [2021-01-07 04:40:28,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 04:40:28 BoogieIcfgContainer [2021-01-07 04:40:28,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 04:40:28,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 04:40:28,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 04:40:28,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 04:40:28,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 04:40:25" (1/3) ... [2021-01-07 04:40:28,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@593340f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 04:40:28, skipping insertion in model container [2021-01-07 04:40:28,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:40:26" (2/3) ... [2021-01-07 04:40:28,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@593340f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 04:40:28, skipping insertion in model container [2021-01-07 04:40:28,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 04:40:28" (3/3) ... [2021-01-07 04:40:28,468 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test7-1.i [2021-01-07 04:40:28,474 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 04:40:28,479 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-07 04:40:28,498 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-07 04:40:28,527 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 04:40:28,527 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-07 04:40:28,527 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 04:40:28,527 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 04:40:28,527 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 04:40:28,528 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 04:40:28,528 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 04:40:28,528 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 04:40:28,547 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2021-01-07 04:40:28,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-07 04:40:28,553 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:40:28,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:40:28,555 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:40:28,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:40:28,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1366407864, now seen corresponding path program 1 times [2021-01-07 04:40:28,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:40:28,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562685533] [2021-01-07 04:40:28,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:40:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:40:28,734 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 04:40:28,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562685533] [2021-01-07 04:40:28,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 04:40:28,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 04:40:28,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933629849] [2021-01-07 04:40:28,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-07 04:40:28,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:40:28,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-07 04:40:28,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-07 04:40:28,759 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 2 states. [2021-01-07 04:40:28,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:40:28,806 INFO L93 Difference]: Finished difference Result 361 states and 609 transitions. [2021-01-07 04:40:28,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-07 04:40:28,807 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-01-07 04:40:28,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:40:28,821 INFO L225 Difference]: With dead ends: 361 [2021-01-07 04:40:28,821 INFO L226 Difference]: Without dead ends: 177 [2021-01-07 04:40:28,825 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 04:40:28,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-01-07 04:40:28,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-01-07 04:40:28,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2021-01-07 04:40:28,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 232 transitions. [2021-01-07 04:40:28,880 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 232 transitions. Word has length 8 [2021-01-07 04:40:28,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:40:28,880 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 232 transitions. [2021-01-07 04:40:28,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-07 04:40:28,881 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 232 transitions. [2021-01-07 04:40:28,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-07 04:40:28,881 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:40:28,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:40:28,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 04:40:28,882 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:40:28,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:40:28,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1136278917, now seen corresponding path program 1 times [2021-01-07 04:40:28,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:40:28,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061319682] [2021-01-07 04:40:28,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:40:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:40:28,954 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 04:40:28,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061319682] [2021-01-07 04:40:28,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 04:40:28,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 04:40:28,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686403619] [2021-01-07 04:40:28,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 04:40:28,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:40:28,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 04:40:28,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 04:40:28,959 INFO L87 Difference]: Start difference. First operand 177 states and 232 transitions. Second operand 4 states. [2021-01-07 04:40:29,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:40:29,388 INFO L93 Difference]: Finished difference Result 382 states and 501 transitions. [2021-01-07 04:40:29,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 04:40:29,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-01-07 04:40:29,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:40:29,394 INFO L225 Difference]: With dead ends: 382 [2021-01-07 04:40:29,396 INFO L226 Difference]: Without dead ends: 295 [2021-01-07 04:40:29,398 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 04:40:29,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-01-07 04:40:29,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 179. [2021-01-07 04:40:29,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2021-01-07 04:40:29,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 234 transitions. [2021-01-07 04:40:29,427 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 234 transitions. Word has length 10 [2021-01-07 04:40:29,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:40:29,428 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 234 transitions. [2021-01-07 04:40:29,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 04:40:29,429 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 234 transitions. [2021-01-07 04:40:29,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-01-07 04:40:29,436 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:40:29,436 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 04:40:29,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 04:40:29,437 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:40:29,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:40:29,437 INFO L82 PathProgramCache]: Analyzing trace with hash -2095912151, now seen corresponding path program 1 times [2021-01-07 04:40:29,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:40:29,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228777832] [2021-01-07 04:40:29,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:40:29,490 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:40:29,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1317086552] [2021-01-07 04:40:29,491 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 04:40:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:40:29,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-07 04:40:29,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:40:29,778 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 04:40:29,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228777832] [2021-01-07 04:40:29,779 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 04:40:29,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317086552] [2021-01-07 04:40:29,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 04:40:29,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 04:40:29,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952317206] [2021-01-07 04:40:29,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 04:40:29,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:40:29,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 04:40:29,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 04:40:29,782 INFO L87 Difference]: Start difference. First operand 179 states and 234 transitions. Second operand 3 states. [2021-01-07 04:40:29,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:40:29,853 INFO L93 Difference]: Finished difference Result 375 states and 495 transitions. [2021-01-07 04:40:29,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 04:40:29,854 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2021-01-07 04:40:29,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:40:29,856 INFO L225 Difference]: With dead ends: 375 [2021-01-07 04:40:29,856 INFO L226 Difference]: Without dead ends: 200 [2021-01-07 04:40:29,857 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 04:40:29,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-01-07 04:40:29,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199. [2021-01-07 04:40:29,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2021-01-07 04:40:29,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 254 transitions. [2021-01-07 04:40:29,869 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 254 transitions. Word has length 62 [2021-01-07 04:40:29,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:40:29,870 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 254 transitions. [2021-01-07 04:40:29,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 04:40:29,870 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 254 transitions. [2021-01-07 04:40:29,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-01-07 04:40:29,872 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:40:29,872 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 04:40:30,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-07 04:40:30,089 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:40:30,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:40:30,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1305568807, now seen corresponding path program 1 times [2021-01-07 04:40:30,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:40:30,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065587974] [2021-01-07 04:40:30,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:40:30,112 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:40:30,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1084295091] [2021-01-07 04:40:30,113 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 04:40:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:40:30,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-07 04:40:30,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:40:30,372 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 04:40:30,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065587974] [2021-01-07 04:40:30,373 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 04:40:30,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084295091] [2021-01-07 04:40:30,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 04:40:30,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 04:40:30,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510591919] [2021-01-07 04:40:30,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 04:40:30,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:40:30,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 04:40:30,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 04:40:30,375 INFO L87 Difference]: Start difference. First operand 199 states and 254 transitions. Second operand 4 states. [2021-01-07 04:40:30,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:40:30,449 INFO L93 Difference]: Finished difference Result 386 states and 496 transitions. [2021-01-07 04:40:30,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 04:40:30,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2021-01-07 04:40:30,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:40:30,451 INFO L225 Difference]: With dead ends: 386 [2021-01-07 04:40:30,452 INFO L226 Difference]: Without dead ends: 191 [2021-01-07 04:40:30,453 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 04:40:30,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-01-07 04:40:30,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 185. [2021-01-07 04:40:30,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2021-01-07 04:40:30,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 233 transitions. [2021-01-07 04:40:30,461 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 233 transitions. Word has length 62 [2021-01-07 04:40:30,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:40:30,461 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 233 transitions. [2021-01-07 04:40:30,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 04:40:30,461 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 233 transitions. [2021-01-07 04:40:30,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-01-07 04:40:30,463 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:40:30,464 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 04:40:30,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:40:30,678 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:40:30,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:40:30,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1777715509, now seen corresponding path program 1 times [2021-01-07 04:40:30,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:40:30,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021533401] [2021-01-07 04:40:30,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:40:30,700 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:40:30,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1311461101] [2021-01-07 04:40:30,701 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 04:40:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:40:30,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-07 04:40:30,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:40:31,000 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 04:40:31,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021533401] [2021-01-07 04:40:31,002 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 04:40:31,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311461101] [2021-01-07 04:40:31,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 04:40:31,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 04:40:31,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895340602] [2021-01-07 04:40:31,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 04:40:31,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:40:31,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 04:40:31,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 04:40:31,005 INFO L87 Difference]: Start difference. First operand 185 states and 233 transitions. Second operand 3 states. [2021-01-07 04:40:31,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:40:31,123 INFO L93 Difference]: Finished difference Result 479 states and 602 transitions. [2021-01-07 04:40:31,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 04:40:31,124 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2021-01-07 04:40:31,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:40:31,126 INFO L225 Difference]: With dead ends: 479 [2021-01-07 04:40:31,126 INFO L226 Difference]: Without dead ends: 298 [2021-01-07 04:40:31,127 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 04:40:31,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-01-07 04:40:31,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 291. [2021-01-07 04:40:31,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2021-01-07 04:40:31,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 366 transitions. [2021-01-07 04:40:31,140 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 366 transitions. Word has length 62 [2021-01-07 04:40:31,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:40:31,142 INFO L481 AbstractCegarLoop]: Abstraction has 291 states and 366 transitions. [2021-01-07 04:40:31,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 04:40:31,142 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 366 transitions. [2021-01-07 04:40:31,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-01-07 04:40:31,150 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:40:31,150 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 04:40:31,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:40:31,364 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:40:31,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:40:31,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1300403396, now seen corresponding path program 1 times [2021-01-07 04:40:31,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:40:31,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632801923] [2021-01-07 04:40:31,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:40:31,390 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:40:31,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1390703722] [2021-01-07 04:40:31,391 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 04:40:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:40:31,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-07 04:40:31,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:40:31,675 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 04:40:31,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632801923] [2021-01-07 04:40:31,677 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 04:40:31,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390703722] [2021-01-07 04:40:31,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 04:40:31,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 04:40:31,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220148845] [2021-01-07 04:40:31,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 04:40:31,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:40:31,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 04:40:31,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 04:40:31,680 INFO L87 Difference]: Start difference. First operand 291 states and 366 transitions. Second operand 3 states. [2021-01-07 04:40:31,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:40:31,707 INFO L93 Difference]: Finished difference Result 536 states and 683 transitions. [2021-01-07 04:40:31,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 04:40:31,708 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2021-01-07 04:40:31,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:40:31,710 INFO L225 Difference]: With dead ends: 536 [2021-01-07 04:40:31,711 INFO L226 Difference]: Without dead ends: 293 [2021-01-07 04:40:31,711 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 04:40:31,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-01-07 04:40:31,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2021-01-07 04:40:31,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2021-01-07 04:40:31,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 368 transitions. [2021-01-07 04:40:31,722 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 368 transitions. Word has length 69 [2021-01-07 04:40:31,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:40:31,722 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 368 transitions. [2021-01-07 04:40:31,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 04:40:31,723 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 368 transitions. [2021-01-07 04:40:31,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-07 04:40:31,724 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:40:31,724 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 04:40:31,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:40:31,940 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:40:31,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:40:31,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1522577957, now seen corresponding path program 1 times [2021-01-07 04:40:31,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:40:31,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17040409] [2021-01-07 04:40:31,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:40:31,960 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:40:31,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [913239365] [2021-01-07 04:40:31,961 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 04:40:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:40:32,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-07 04:40:32,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:40:32,230 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 04:40:32,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17040409] [2021-01-07 04:40:32,231 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 04:40:32,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913239365] [2021-01-07 04:40:32,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-07 04:40:32,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-01-07 04:40:32,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282545697] [2021-01-07 04:40:32,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 04:40:32,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:40:32,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 04:40:32,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 04:40:32,234 INFO L87 Difference]: Start difference. First operand 293 states and 368 transitions. Second operand 4 states. [2021-01-07 04:40:32,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:40:32,268 INFO L93 Difference]: Finished difference Result 540 states and 687 transitions. [2021-01-07 04:40:32,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 04:40:32,269 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2021-01-07 04:40:32,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:40:32,271 INFO L225 Difference]: With dead ends: 540 [2021-01-07 04:40:32,271 INFO L226 Difference]: Without dead ends: 295 [2021-01-07 04:40:32,272 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 04:40:32,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-01-07 04:40:32,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2021-01-07 04:40:32,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2021-01-07 04:40:32,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 370 transitions. [2021-01-07 04:40:32,281 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 370 transitions. Word has length 71 [2021-01-07 04:40:32,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:40:32,282 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 370 transitions. [2021-01-07 04:40:32,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 04:40:32,282 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 370 transitions. [2021-01-07 04:40:32,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-07 04:40:32,283 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:40:32,283 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 04:40:32,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-07 04:40:32,498 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:40:32,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:40:32,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1094780836, now seen corresponding path program 2 times [2021-01-07 04:40:32,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:40:32,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414798571] [2021-01-07 04:40:32,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:40:32,528 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:40:32,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024420431] [2021-01-07 04:40:32,531 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 04:40:32,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-07 04:40:32,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 04:40:32,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-07 04:40:32,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:40:32,761 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 04:40:32,762 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:40:32,769 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:40:32,770 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 04:40:32,770 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2021-01-07 04:40:32,787 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 04:40:32,788 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:40:32,790 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:40:32,790 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 04:40:32,791 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-01-07 04:40:32,801 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 04:40:32,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414798571] [2021-01-07 04:40:32,802 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 04:40:32,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024420431] [2021-01-07 04:40:32,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 04:40:32,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 04:40:32,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495518644] [2021-01-07 04:40:32,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 04:40:32,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:40:32,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 04:40:32,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 04:40:32,804 INFO L87 Difference]: Start difference. First operand 295 states and 370 transitions. Second operand 4 states. [2021-01-07 04:40:33,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:40:33,218 INFO L93 Difference]: Finished difference Result 383 states and 487 transitions. [2021-01-07 04:40:33,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 04:40:33,218 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2021-01-07 04:40:33,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:40:33,221 INFO L225 Difference]: With dead ends: 383 [2021-01-07 04:40:33,221 INFO L226 Difference]: Without dead ends: 379 [2021-01-07 04:40:33,222 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 04:40:33,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-01-07 04:40:33,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 297. [2021-01-07 04:40:33,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2021-01-07 04:40:33,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 372 transitions. [2021-01-07 04:40:33,233 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 372 transitions. Word has length 73 [2021-01-07 04:40:33,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:40:33,233 INFO L481 AbstractCegarLoop]: Abstraction has 297 states and 372 transitions. [2021-01-07 04:40:33,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 04:40:33,234 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 372 transitions. [2021-01-07 04:40:33,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-01-07 04:40:33,235 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:40:33,235 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 04:40:33,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:40:33,450 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:40:33,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:40:33,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1878713718, now seen corresponding path program 1 times [2021-01-07 04:40:33,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:40:33,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978314806] [2021-01-07 04:40:33,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:40:33,470 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:40:33,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1862020139] [2021-01-07 04:40:33,471 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 04:40:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:40:33,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-07 04:40:33,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:40:33,758 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 04:40:33,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978314806] [2021-01-07 04:40:33,758 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 04:40:33,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862020139] [2021-01-07 04:40:33,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 04:40:33,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 04:40:33,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423889191] [2021-01-07 04:40:33,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 04:40:33,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:40:33,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 04:40:33,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 04:40:33,761 INFO L87 Difference]: Start difference. First operand 297 states and 372 transitions. Second operand 3 states. [2021-01-07 04:40:33,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:40:33,835 INFO L93 Difference]: Finished difference Result 487 states and 631 transitions. [2021-01-07 04:40:33,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 04:40:33,835 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2021-01-07 04:40:33,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:40:33,838 INFO L225 Difference]: With dead ends: 487 [2021-01-07 04:40:33,838 INFO L226 Difference]: Without dead ends: 339 [2021-01-07 04:40:33,839 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 04:40:33,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-01-07 04:40:33,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 337. [2021-01-07 04:40:33,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2021-01-07 04:40:33,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 412 transitions. [2021-01-07 04:40:33,850 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 412 transitions. Word has length 107 [2021-01-07 04:40:33,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:40:33,850 INFO L481 AbstractCegarLoop]: Abstraction has 337 states and 412 transitions. [2021-01-07 04:40:33,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 04:40:33,850 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 412 transitions. [2021-01-07 04:40:33,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-01-07 04:40:33,851 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:40:33,852 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 04:40:34,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:40:34,068 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:40:34,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:40:34,070 INFO L82 PathProgramCache]: Analyzing trace with hash 2096048526, now seen corresponding path program 1 times [2021-01-07 04:40:34,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:40:34,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462738347] [2021-01-07 04:40:34,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:40:34,109 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:40:34,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [108356809] [2021-01-07 04:40:34,109 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 04:40:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:40:34,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-07 04:40:34,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:40:34,370 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 04:40:34,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462738347] [2021-01-07 04:40:34,370 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 04:40:34,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108356809] [2021-01-07 04:40:34,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 04:40:34,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 04:40:34,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683169534] [2021-01-07 04:40:34,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 04:40:34,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:40:34,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 04:40:34,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 04:40:34,374 INFO L87 Difference]: Start difference. First operand 337 states and 412 transitions. Second operand 4 states. [2021-01-07 04:40:34,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:40:34,445 INFO L93 Difference]: Finished difference Result 502 states and 626 transitions. [2021-01-07 04:40:34,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 04:40:34,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2021-01-07 04:40:34,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:40:34,448 INFO L225 Difference]: With dead ends: 502 [2021-01-07 04:40:34,448 INFO L226 Difference]: Without dead ends: 314 [2021-01-07 04:40:34,449 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 04:40:34,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-01-07 04:40:34,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 309. [2021-01-07 04:40:34,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2021-01-07 04:40:34,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 370 transitions. [2021-01-07 04:40:34,462 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 370 transitions. Word has length 107 [2021-01-07 04:40:34,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:40:34,462 INFO L481 AbstractCegarLoop]: Abstraction has 309 states and 370 transitions. [2021-01-07 04:40:34,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 04:40:34,463 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 370 transitions. [2021-01-07 04:40:34,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-01-07 04:40:34,464 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:40:34,464 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 04:40:34,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-07 04:40:34,678 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:40:34,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:40:34,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1213199680, now seen corresponding path program 1 times [2021-01-07 04:40:34,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:40:34,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80691827] [2021-01-07 04:40:34,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:40:34,707 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:40:34,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [90428393] [2021-01-07 04:40:34,708 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 04:40:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:40:34,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-07 04:40:34,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:40:35,024 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 04:40:35,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80691827] [2021-01-07 04:40:35,024 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 04:40:35,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90428393] [2021-01-07 04:40:35,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-07 04:40:35,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-07 04:40:35,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886654702] [2021-01-07 04:40:35,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 04:40:35,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:40:35,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 04:40:35,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-07 04:40:35,027 INFO L87 Difference]: Start difference. First operand 309 states and 370 transitions. Second operand 5 states. [2021-01-07 04:40:35,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:40:35,080 INFO L93 Difference]: Finished difference Result 572 states and 691 transitions. [2021-01-07 04:40:35,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 04:40:35,081 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2021-01-07 04:40:35,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:40:35,083 INFO L225 Difference]: With dead ends: 572 [2021-01-07 04:40:35,083 INFO L226 Difference]: Without dead ends: 311 [2021-01-07 04:40:35,084 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 04:40:35,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-01-07 04:40:35,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2021-01-07 04:40:35,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2021-01-07 04:40:35,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 372 transitions. [2021-01-07 04:40:35,095 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 372 transitions. Word has length 107 [2021-01-07 04:40:35,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:40:35,096 INFO L481 AbstractCegarLoop]: Abstraction has 311 states and 372 transitions. [2021-01-07 04:40:35,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 04:40:35,096 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 372 transitions. [2021-01-07 04:40:35,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-01-07 04:40:35,100 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:40:35,100 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 04:40:35,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:40:35,315 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:40:35,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:40:35,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1565711905, now seen corresponding path program 2 times [2021-01-07 04:40:35,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:40:35,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647314657] [2021-01-07 04:40:35,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:40:35,334 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:40:35,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1085250975] [2021-01-07 04:40:35,334 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 04:40:35,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 04:40:35,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 04:40:35,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-07 04:40:35,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:40:35,711 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 04:40:35,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647314657] [2021-01-07 04:40:35,712 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 04:40:35,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085250975] [2021-01-07 04:40:35,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-07 04:40:35,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-07 04:40:35,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020843159] [2021-01-07 04:40:35,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 04:40:35,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:40:35,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 04:40:35,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-01-07 04:40:35,714 INFO L87 Difference]: Start difference. First operand 311 states and 372 transitions. Second operand 6 states. [2021-01-07 04:40:35,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:40:35,783 INFO L93 Difference]: Finished difference Result 576 states and 695 transitions. [2021-01-07 04:40:35,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 04:40:35,784 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2021-01-07 04:40:35,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:40:35,786 INFO L225 Difference]: With dead ends: 576 [2021-01-07 04:40:35,786 INFO L226 Difference]: Without dead ends: 313 [2021-01-07 04:40:35,787 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 04:40:35,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-01-07 04:40:35,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2021-01-07 04:40:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2021-01-07 04:40:35,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 374 transitions. [2021-01-07 04:40:35,801 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 374 transitions. Word has length 109 [2021-01-07 04:40:35,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:40:35,802 INFO L481 AbstractCegarLoop]: Abstraction has 313 states and 374 transitions. [2021-01-07 04:40:35,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 04:40:35,802 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 374 transitions. [2021-01-07 04:40:35,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-07 04:40:35,804 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:40:35,804 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 04:40:36,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:40:36,019 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:40:36,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:40:36,021 INFO L82 PathProgramCache]: Analyzing trace with hash -383989728, now seen corresponding path program 3 times [2021-01-07 04:40:36,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:40:36,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469356421] [2021-01-07 04:40:36,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:40:36,037 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:40:36,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [3163762] [2021-01-07 04:40:36,037 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 04:40:36,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-07 04:40:36,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 04:40:36,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-07 04:40:36,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:40:36,427 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 04:40:36,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469356421] [2021-01-07 04:40:36,429 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 04:40:36,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3163762] [2021-01-07 04:40:36,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 04:40:36,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 04:40:36,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481334157] [2021-01-07 04:40:36,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 04:40:36,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:40:36,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 04:40:36,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 04:40:36,437 INFO L87 Difference]: Start difference. First operand 313 states and 374 transitions. Second operand 4 states. [2021-01-07 04:40:36,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:40:36,753 INFO L93 Difference]: Finished difference Result 644 states and 770 transitions. [2021-01-07 04:40:36,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 04:40:36,753 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2021-01-07 04:40:36,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:40:36,756 INFO L225 Difference]: With dead ends: 644 [2021-01-07 04:40:36,756 INFO L226 Difference]: Without dead ends: 379 [2021-01-07 04:40:36,757 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 04:40:36,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-01-07 04:40:36,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 372. [2021-01-07 04:40:36,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2021-01-07 04:40:36,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 442 transitions. [2021-01-07 04:40:36,791 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 442 transitions. Word has length 111 [2021-01-07 04:40:36,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:40:36,791 INFO L481 AbstractCegarLoop]: Abstraction has 372 states and 442 transitions. [2021-01-07 04:40:36,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 04:40:36,791 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 442 transitions. [2021-01-07 04:40:36,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-01-07 04:40:36,793 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:40:36,793 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 04:40:36,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-07 04:40:36,994 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:40:36,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:40:36,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1107954682, now seen corresponding path program 1 times [2021-01-07 04:40:36,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:40:36,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820788215] [2021-01-07 04:40:36,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:40:37,022 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:40:37,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [578832840] [2021-01-07 04:40:37,022 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 04:40:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:40:37,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-07 04:40:37,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:40:37,344 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 04:40:37,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820788215] [2021-01-07 04:40:37,345 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 04:40:37,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578832840] [2021-01-07 04:40:37,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-07 04:40:37,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-07 04:40:37,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682732867] [2021-01-07 04:40:37,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 04:40:37,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:40:37,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 04:40:37,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-07 04:40:37,347 INFO L87 Difference]: Start difference. First operand 372 states and 442 transitions. Second operand 7 states. [2021-01-07 04:40:37,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:40:37,404 INFO L93 Difference]: Finished difference Result 691 states and 827 transitions. [2021-01-07 04:40:37,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 04:40:37,404 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2021-01-07 04:40:37,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:40:37,406 INFO L225 Difference]: With dead ends: 691 [2021-01-07 04:40:37,407 INFO L226 Difference]: Without dead ends: 374 [2021-01-07 04:40:37,407 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 04:40:37,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-01-07 04:40:37,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2021-01-07 04:40:37,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2021-01-07 04:40:37,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 444 transitions. [2021-01-07 04:40:37,421 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 444 transitions. Word has length 118 [2021-01-07 04:40:37,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:40:37,422 INFO L481 AbstractCegarLoop]: Abstraction has 374 states and 444 transitions. [2021-01-07 04:40:37,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 04:40:37,422 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 444 transitions. [2021-01-07 04:40:37,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-01-07 04:40:37,423 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:40:37,423 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 04:40:37,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-07 04:40:37,638 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:40:37,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:40:37,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1744267321, now seen corresponding path program 2 times [2021-01-07 04:40:37,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:40:37,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692300842] [2021-01-07 04:40:37,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:40:37,655 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:40:37,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1989476012] [2021-01-07 04:40:37,656 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 04:40:37,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 04:40:37,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 04:40:37,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 04:40:37,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:40:38,087 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 04:40:38,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692300842] [2021-01-07 04:40:38,088 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-07 04:40:38,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989476012] [2021-01-07 04:40:38,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-07 04:40:38,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-07 04:40:38,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943751624] [2021-01-07 04:40:38,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 04:40:38,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:40:38,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 04:40:38,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-01-07 04:40:38,092 INFO L87 Difference]: Start difference. First operand 374 states and 444 transitions. Second operand 8 states. [2021-01-07 04:40:38,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:40:38,146 INFO L93 Difference]: Finished difference Result 694 states and 830 transitions. [2021-01-07 04:40:38,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-07 04:40:38,147 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 120 [2021-01-07 04:40:38,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:40:38,149 INFO L225 Difference]: With dead ends: 694 [2021-01-07 04:40:38,149 INFO L226 Difference]: Without dead ends: 376 [2021-01-07 04:40:38,152 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 04:40:38,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-01-07 04:40:38,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2021-01-07 04:40:38,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2021-01-07 04:40:38,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 446 transitions. [2021-01-07 04:40:38,168 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 446 transitions. Word has length 120 [2021-01-07 04:40:38,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:40:38,168 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 446 transitions. [2021-01-07 04:40:38,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 04:40:38,168 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 446 transitions. [2021-01-07 04:40:38,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-01-07 04:40:38,169 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:40:38,170 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 04:40:38,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-07 04:40:38,384 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-07 04:40:38,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:40:38,385 INFO L82 PathProgramCache]: Analyzing trace with hash -994826982, now seen corresponding path program 3 times [2021-01-07 04:40:38,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:40:38,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473257876] [2021-01-07 04:40:38,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:40:38,400 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-07 04:40:38,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [465802194] [2021-01-07 04:40:38,401 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