/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_OAT_test7-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 16:22:02,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 16:22:02,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 16:22:02,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-23 16:22:02,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 16:22:02,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 16:22:02,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 16:22:02,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 16:22:02,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 16:22:02,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 16:22:02,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 16:22:02,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 16:22:02,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 16:22:02,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 16:22:02,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 16:22:02,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 16:22:02,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 16:22:02,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 16:22:02,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 16:22:02,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 16:22:02,283 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 16:22:02,337 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 16:22:02,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 16:22:02,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 16:22:02,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 16:22:02,343 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 16:22:02,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 16:22:02,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 16:22:02,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 16:22:02,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 16:22:02,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 16:22:02,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 16:22:02,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 16:22:02,346 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 16:22:02,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 16:22:02,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 16:22:02,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 16:22:02,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 16:22:02,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 16:22:02,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 16:22:02,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 16:22:02,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 16:22:02,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 16:22:02,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 16:22:02,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 16:22:02,349 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 16:22:02,349 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 16:22:02,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 16:22:02,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 16:22:02,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 16:22:02,887 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 16:22:02,888 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 16:22:02,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i [2020-12-23 16:22:02,970 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e4986a7db/2b5ff993185a4bcb8a8c54baa33e97c3/FLAGe9f685a67 [2020-12-23 16:22:03,710 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 16:22:03,711 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i [2020-12-23 16:22:03,735 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e4986a7db/2b5ff993185a4bcb8a8c54baa33e97c3/FLAGe9f685a67 [2020-12-23 16:22:03,925 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e4986a7db/2b5ff993185a4bcb8a8c54baa33e97c3 [2020-12-23 16:22:03,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 16:22:03,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 16:22:03,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 16:22:03,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 16:22:03,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 16:22:03,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:22:03" (1/1) ... [2020-12-23 16:22:03,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@104e3942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:22:03, skipping insertion in model container [2020-12-23 16:22:03,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:22:03" (1/1) ... [2020-12-23 16:22:03,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 16:22:04,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 16:22:04,720 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_OAT_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]]]] [2020-12-23 16:22:04,976 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_OAT_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,] [2020-12-23 16:22:04,980 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_OAT_test7-1.i[44245,44258] [2020-12-23 16:22:04,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:22:05,011 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 16:22:05,074 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_OAT_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]]]] [2020-12-23 16:22:05,248 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_OAT_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,] [2020-12-23 16:22:05,249 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_OAT_test7-1.i[44245,44258] [2020-12-23 16:22:05,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:22:05,356 INFO L208 MainTranslator]: Completed translation [2020-12-23 16:22:05,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:22:05 WrapperNode [2020-12-23 16:22:05,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 16:22:05,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 16:22:05,359 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 16:22:05,359 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 16:22:05,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:22:05" (1/1) ... [2020-12-23 16:22:05,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:22:05" (1/1) ... [2020-12-23 16:22:05,492 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 16:22:05,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 16:22:05,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 16:22:05,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 16:22:05,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:22:05" (1/1) ... [2020-12-23 16:22:05,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:22:05" (1/1) ... [2020-12-23 16:22:05,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:22:05" (1/1) ... [2020-12-23 16:22:05,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:22:05" (1/1) ... [2020-12-23 16:22:05,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:22:05" (1/1) ... [2020-12-23 16:22:05,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:22:05" (1/1) ... [2020-12-23 16:22:05,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:22:05" (1/1) ... [2020-12-23 16:22:05,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 16:22:05,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 16:22:05,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 16:22:05,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 16:22:05,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:22:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 16:22:05,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 16:22:05,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 16:22:05,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 16:22:05,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-23 16:22:05,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 16:22:05,780 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-12-23 16:22:05,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-23 16:22:05,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 16:22:05,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 16:22:05,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 16:22:05,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 16:22:07,753 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 16:22:07,754 INFO L299 CfgBuilder]: Removed 73 assume(true) statements. [2020-12-23 16:22:07,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:22:07 BoogieIcfgContainer [2020-12-23 16:22:07,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 16:22:07,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 16:22:07,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 16:22:07,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 16:22:07,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 04:22:03" (1/3) ... [2020-12-23 16:22:07,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d80b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:22:07, skipping insertion in model container [2020-12-23 16:22:07,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:22:05" (2/3) ... [2020-12-23 16:22:07,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d80b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:22:07, skipping insertion in model container [2020-12-23 16:22:07,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:22:07" (3/3) ... [2020-12-23 16:22:07,770 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test7-1.i [2020-12-23 16:22:07,779 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 16:22:07,786 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 16:22:07,808 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-23 16:22:07,857 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 16:22:07,857 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 16:22:07,858 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 16:22:07,858 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 16:22:07,858 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 16:22:07,858 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 16:22:07,858 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 16:22:07,858 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 16:22:07,888 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-12-23 16:22:07,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 16:22:07,895 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:22:07,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:22:07,896 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:22:07,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:22:07,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1366407864, now seen corresponding path program 1 times [2020-12-23 16:22:07,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:22:07,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966594670] [2020-12-23 16:22:07,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:22:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:22:08,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:22:08,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966594670] [2020-12-23 16:22:08,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:22:08,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:22:08,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804221245] [2020-12-23 16:22:08,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 16:22:08,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:22:08,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 16:22:08,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 16:22:08,179 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 2 states. [2020-12-23 16:22:08,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:22:08,253 INFO L93 Difference]: Finished difference Result 361 states and 609 transitions. [2020-12-23 16:22:08,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 16:22:08,255 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-23 16:22:08,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:22:08,275 INFO L225 Difference]: With dead ends: 361 [2020-12-23 16:22:08,276 INFO L226 Difference]: Without dead ends: 177 [2020-12-23 16:22:08,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 16:22:08,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-12-23 16:22:08,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2020-12-23 16:22:08,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-12-23 16:22:08,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 232 transitions. [2020-12-23 16:22:08,374 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 232 transitions. Word has length 8 [2020-12-23 16:22:08,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:22:08,375 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 232 transitions. [2020-12-23 16:22:08,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 16:22:08,375 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 232 transitions. [2020-12-23 16:22:08,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 16:22:08,376 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:22:08,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:22:08,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 16:22:08,377 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:22:08,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:22:08,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1136278917, now seen corresponding path program 1 times [2020-12-23 16:22:08,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:22:08,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418472463] [2020-12-23 16:22:08,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:22:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:22:08,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:22:08,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418472463] [2020-12-23 16:22:08,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:22:08,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:22:08,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967307032] [2020-12-23 16:22:08,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:22:08,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:22:08,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:22:08,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:22:08,544 INFO L87 Difference]: Start difference. First operand 177 states and 232 transitions. Second operand 4 states. [2020-12-23 16:22:09,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:22:09,190 INFO L93 Difference]: Finished difference Result 382 states and 501 transitions. [2020-12-23 16:22:09,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:22:09,191 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-23 16:22:09,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:22:09,194 INFO L225 Difference]: With dead ends: 382 [2020-12-23 16:22:09,194 INFO L226 Difference]: Without dead ends: 295 [2020-12-23 16:22:09,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:22:09,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-12-23 16:22:09,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 179. [2020-12-23 16:22:09,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-12-23 16:22:09,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 234 transitions. [2020-12-23 16:22:09,213 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 234 transitions. Word has length 10 [2020-12-23 16:22:09,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:22:09,214 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 234 transitions. [2020-12-23 16:22:09,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:22:09,214 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 234 transitions. [2020-12-23 16:22:09,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 16:22:09,218 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:22:09,219 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] [2020-12-23 16:22:09,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 16:22:09,219 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:22:09,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:22:09,220 INFO L82 PathProgramCache]: Analyzing trace with hash -2095912151, now seen corresponding path program 1 times [2020-12-23 16:22:09,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:22:09,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057889883] [2020-12-23 16:22:09,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:22:09,254 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:22:09,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254755819] [2020-12-23 16:22:09,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:22:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:22:09,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 16:22:09,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:22:09,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:22:09,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057889883] [2020-12-23 16:22:09,625 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:22:09,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254755819] [2020-12-23 16:22:09,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:22:09,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:22:09,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508191473] [2020-12-23 16:22:09,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:22:09,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:22:09,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:22:09,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:22:09,628 INFO L87 Difference]: Start difference. First operand 179 states and 234 transitions. Second operand 3 states. [2020-12-23 16:22:09,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:22:09,747 INFO L93 Difference]: Finished difference Result 375 states and 495 transitions. [2020-12-23 16:22:09,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:22:09,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-23 16:22:09,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:22:09,750 INFO L225 Difference]: With dead ends: 375 [2020-12-23 16:22:09,750 INFO L226 Difference]: Without dead ends: 200 [2020-12-23 16:22:09,752 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 [2020-12-23 16:22:09,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-12-23 16:22:09,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199. [2020-12-23 16:22:09,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-12-23 16:22:09,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 254 transitions. [2020-12-23 16:22:09,769 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 254 transitions. Word has length 62 [2020-12-23 16:22:09,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:22:09,770 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 254 transitions. [2020-12-23 16:22:09,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:22:09,770 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 254 transitions. [2020-12-23 16:22:09,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 16:22:09,772 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:22:09,773 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] [2020-12-23 16:22:09,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 16:22:09,989 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:22:09,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:22:09,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1305568807, now seen corresponding path program 1 times [2020-12-23 16:22:09,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:22:09,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344557858] [2020-12-23 16:22:09,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:22:10,039 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:22:10,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1080496865] [2020-12-23 16:22:10,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:22:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:22:10,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 16:22:10,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:22:10,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:22:10,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344557858] [2020-12-23 16:22:10,357 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:22:10,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080496865] [2020-12-23 16:22:10,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:22:10,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:22:10,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990984268] [2020-12-23 16:22:10,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:22:10,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:22:10,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:22:10,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:22:10,359 INFO L87 Difference]: Start difference. First operand 199 states and 254 transitions. Second operand 4 states. [2020-12-23 16:22:10,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:22:10,462 INFO L93 Difference]: Finished difference Result 386 states and 496 transitions. [2020-12-23 16:22:10,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:22:10,463 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-23 16:22:10,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:22:10,464 INFO L225 Difference]: With dead ends: 386 [2020-12-23 16:22:10,464 INFO L226 Difference]: Without dead ends: 191 [2020-12-23 16:22:10,466 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 [2020-12-23 16:22:10,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-12-23 16:22:10,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 185. [2020-12-23 16:22:10,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-12-23 16:22:10,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 233 transitions. [2020-12-23 16:22:10,490 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 233 transitions. Word has length 62 [2020-12-23 16:22:10,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:22:10,491 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 233 transitions. [2020-12-23 16:22:10,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:22:10,491 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 233 transitions. [2020-12-23 16:22:10,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 16:22:10,497 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:22:10,498 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] [2020-12-23 16:22:10,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:22:10,700 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:22:10,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:22:10,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1777715509, now seen corresponding path program 1 times [2020-12-23 16:22:10,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:22:10,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106274029] [2020-12-23 16:22:10,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:22:10,721 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:22:10,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1173488707] [2020-12-23 16:22:10,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:22:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:22:10,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 16:22:10,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:22:11,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:22:11,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106274029] [2020-12-23 16:22:11,079 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:22:11,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173488707] [2020-12-23 16:22:11,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:22:11,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:22:11,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794430756] [2020-12-23 16:22:11,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:22:11,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:22:11,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:22:11,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:22:11,084 INFO L87 Difference]: Start difference. First operand 185 states and 233 transitions. Second operand 3 states. [2020-12-23 16:22:11,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:22:11,226 INFO L93 Difference]: Finished difference Result 479 states and 602 transitions. [2020-12-23 16:22:11,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:22:11,227 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-23 16:22:11,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:22:11,229 INFO L225 Difference]: With dead ends: 479 [2020-12-23 16:22:11,229 INFO L226 Difference]: Without dead ends: 298 [2020-12-23 16:22:11,230 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 [2020-12-23 16:22:11,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-23 16:22:11,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 291. [2020-12-23 16:22:11,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-12-23 16:22:11,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 366 transitions. [2020-12-23 16:22:11,251 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 366 transitions. Word has length 62 [2020-12-23 16:22:11,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:22:11,255 INFO L481 AbstractCegarLoop]: Abstraction has 291 states and 366 transitions. [2020-12-23 16:22:11,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:22:11,256 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 366 transitions. [2020-12-23 16:22:11,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 16:22:11,264 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:22:11,264 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] [2020-12-23 16:22:11,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:22:11,466 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:22:11,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:22:11,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1300403396, now seen corresponding path program 1 times [2020-12-23 16:22:11,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:22:11,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938960254] [2020-12-23 16:22:11,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:22:11,502 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:22:11,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [566619789] [2020-12-23 16:22:11,505 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 [2020-12-23 16:22:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:22:11,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 16:22:11,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:22:11,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:22:11,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938960254] [2020-12-23 16:22:11,847 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:22:11,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566619789] [2020-12-23 16:22:11,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:22:11,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:22:11,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403256894] [2020-12-23 16:22:11,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:22:11,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:22:11,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:22:11,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:22:11,850 INFO L87 Difference]: Start difference. First operand 291 states and 366 transitions. Second operand 3 states. [2020-12-23 16:22:11,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:22:11,881 INFO L93 Difference]: Finished difference Result 536 states and 683 transitions. [2020-12-23 16:22:11,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:22:11,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-23 16:22:11,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:22:11,884 INFO L225 Difference]: With dead ends: 536 [2020-12-23 16:22:11,884 INFO L226 Difference]: Without dead ends: 293 [2020-12-23 16:22:11,885 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 [2020-12-23 16:22:11,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-12-23 16:22:11,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2020-12-23 16:22:11,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-12-23 16:22:11,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 368 transitions. [2020-12-23 16:22:11,897 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 368 transitions. Word has length 69 [2020-12-23 16:22:11,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:22:11,897 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 368 transitions. [2020-12-23 16:22:11,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:22:11,898 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 368 transitions. [2020-12-23 16:22:11,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-23 16:22:11,899 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:22:11,899 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] [2020-12-23 16:22:12,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:22:12,113 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:22:12,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:22:12,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1522577957, now seen corresponding path program 1 times [2020-12-23 16:22:12,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:22:12,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612745948] [2020-12-23 16:22:12,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:22:12,154 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:22:12,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1250744007] [2020-12-23 16:22:12,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:22:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:22:12,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 16:22:12,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:22:12,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 16:22:12,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612745948] [2020-12-23 16:22:12,537 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:22:12,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250744007] [2020-12-23 16:22:12,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 16:22:12,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-23 16:22:12,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834013730] [2020-12-23 16:22:12,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:22:12,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:22:12,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:22:12,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:22:12,540 INFO L87 Difference]: Start difference. First operand 293 states and 368 transitions. Second operand 4 states. [2020-12-23 16:22:12,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:22:12,594 INFO L93 Difference]: Finished difference Result 540 states and 687 transitions. [2020-12-23 16:22:12,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:22:12,594 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-12-23 16:22:12,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:22:12,599 INFO L225 Difference]: With dead ends: 540 [2020-12-23 16:22:12,599 INFO L226 Difference]: Without dead ends: 295 [2020-12-23 16:22:12,601 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 [2020-12-23 16:22:12,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-12-23 16:22:12,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2020-12-23 16:22:12,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-12-23 16:22:12,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 370 transitions. [2020-12-23 16:22:12,616 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 370 transitions. Word has length 71 [2020-12-23 16:22:12,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:22:12,617 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 370 transitions. [2020-12-23 16:22:12,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:22:12,617 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 370 transitions. [2020-12-23 16:22:12,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 16:22:12,618 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:22:12,618 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] [2020-12-23 16:22:12,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 16:22:12,833 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:22:12,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:22:12,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1094780836, now seen corresponding path program 2 times [2020-12-23 16:22:12,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:22:12,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972066920] [2020-12-23 16:22:12,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:22:12,857 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:22:12,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009608414] [2020-12-23 16:22:12,858 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 [2020-12-23 16:22:13,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 16:22:13,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:22:13,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 16:22:13,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:22:13,162 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 [2020-12-23 16:22:13,163 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:22:13,167 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:22:13,167 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:22:13,168 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-12-23 16:22:13,186 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 [2020-12-23 16:22:13,188 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:22:13,190 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:22:13,191 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:22:13,191 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-23 16:22:13,202 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 16:22:13,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972066920] [2020-12-23 16:22:13,203 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:22:13,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009608414] [2020-12-23 16:22:13,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:22:13,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:22:13,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238147206] [2020-12-23 16:22:13,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:22:13,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:22:13,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:22:13,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:22:13,206 INFO L87 Difference]: Start difference. First operand 295 states and 370 transitions. Second operand 4 states. [2020-12-23 16:22:13,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:22:13,663 INFO L93 Difference]: Finished difference Result 383 states and 487 transitions. [2020-12-23 16:22:13,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:22:13,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-12-23 16:22:13,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:22:13,666 INFO L225 Difference]: With dead ends: 383 [2020-12-23 16:22:13,667 INFO L226 Difference]: Without dead ends: 379 [2020-12-23 16:22:13,668 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 [2020-12-23 16:22:13,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-12-23 16:22:13,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 297. [2020-12-23 16:22:13,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-12-23 16:22:13,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 372 transitions. [2020-12-23 16:22:13,679 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 372 transitions. Word has length 73 [2020-12-23 16:22:13,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:22:13,680 INFO L481 AbstractCegarLoop]: Abstraction has 297 states and 372 transitions. [2020-12-23 16:22:13,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:22:13,680 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 372 transitions. [2020-12-23 16:22:13,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-23 16:22:13,681 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:22:13,682 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] [2020-12-23 16:22:13,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:22:13,896 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:22:13,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:22:13,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1878713718, now seen corresponding path program 1 times [2020-12-23 16:22:13,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:22:13,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745628548] [2020-12-23 16:22:13,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:22:13,927 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:22:13,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [22854710] [2020-12-23 16:22:13,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:22:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:22:14,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 16:22:14,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:22:14,320 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 16:22:14,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745628548] [2020-12-23 16:22:14,321 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:22:14,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22854710] [2020-12-23 16:22:14,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:22:14,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:22:14,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622121371] [2020-12-23 16:22:14,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:22:14,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:22:14,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:22:14,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:22:14,331 INFO L87 Difference]: Start difference. First operand 297 states and 372 transitions. Second operand 3 states. [2020-12-23 16:22:14,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:22:14,453 INFO L93 Difference]: Finished difference Result 487 states and 631 transitions. [2020-12-23 16:22:14,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:22:14,454 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-23 16:22:14,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:22:14,456 INFO L225 Difference]: With dead ends: 487 [2020-12-23 16:22:14,457 INFO L226 Difference]: Without dead ends: 339 [2020-12-23 16:22:14,457 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 [2020-12-23 16:22:14,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-12-23 16:22:14,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 337. [2020-12-23 16:22:14,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-12-23 16:22:14,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 412 transitions. [2020-12-23 16:22:14,469 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 412 transitions. Word has length 107 [2020-12-23 16:22:14,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:22:14,470 INFO L481 AbstractCegarLoop]: Abstraction has 337 states and 412 transitions. [2020-12-23 16:22:14,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:22:14,470 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 412 transitions. [2020-12-23 16:22:14,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-23 16:22:14,471 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:22:14,472 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] [2020-12-23 16:22:14,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:22:14,687 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:22:14,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:22:14,688 INFO L82 PathProgramCache]: Analyzing trace with hash 2096048526, now seen corresponding path program 1 times [2020-12-23 16:22:14,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:22:14,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626871803] [2020-12-23 16:22:14,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:22:14,708 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:22:14,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [120391234] [2020-12-23 16:22:14,709 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 [2020-12-23 16:22:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:22:15,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 16:22:15,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:22:15,128 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 16:22:15,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626871803] [2020-12-23 16:22:15,129 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:22:15,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120391234] [2020-12-23 16:22:15,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:22:15,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:22:15,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630991954] [2020-12-23 16:22:15,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:22:15,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:22:15,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:22:15,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:22:15,132 INFO L87 Difference]: Start difference. First operand 337 states and 412 transitions. Second operand 4 states. [2020-12-23 16:22:15,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:22:15,232 INFO L93 Difference]: Finished difference Result 502 states and 626 transitions. [2020-12-23 16:22:15,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:22:15,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-12-23 16:22:15,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:22:15,235 INFO L225 Difference]: With dead ends: 502 [2020-12-23 16:22:15,235 INFO L226 Difference]: Without dead ends: 314 [2020-12-23 16:22:15,236 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 [2020-12-23 16:22:15,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-12-23 16:22:15,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 309. [2020-12-23 16:22:15,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-12-23 16:22:15,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 370 transitions. [2020-12-23 16:22:15,246 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 370 transitions. Word has length 107 [2020-12-23 16:22:15,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:22:15,247 INFO L481 AbstractCegarLoop]: Abstraction has 309 states and 370 transitions. [2020-12-23 16:22:15,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:22:15,247 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 370 transitions. [2020-12-23 16:22:15,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-23 16:22:15,248 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:22:15,248 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] [2020-12-23 16:22:15,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 16:22:15,463 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:22:15,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:22:15,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1213199680, now seen corresponding path program 1 times [2020-12-23 16:22:15,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:22:15,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933581662] [2020-12-23 16:22:15,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:22:15,484 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:22:15,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1978349234] [2020-12-23 16:22:15,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:22:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:22:15,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 16:22:15,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:22:15,894 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 16:22:15,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933581662] [2020-12-23 16:22:15,895 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:22:15,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978349234] [2020-12-23 16:22:15,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 16:22:15,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 16:22:15,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462613488] [2020-12-23 16:22:15,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 16:22:15,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:22:15,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 16:22:15,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:22:15,897 INFO L87 Difference]: Start difference. First operand 309 states and 370 transitions. Second operand 5 states. [2020-12-23 16:22:15,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:22:15,944 INFO L93 Difference]: Finished difference Result 572 states and 691 transitions. [2020-12-23 16:22:15,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 16:22:15,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-12-23 16:22:15,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:22:15,947 INFO L225 Difference]: With dead ends: 572 [2020-12-23 16:22:15,947 INFO L226 Difference]: Without dead ends: 311 [2020-12-23 16:22:15,948 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 [2020-12-23 16:22:15,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-12-23 16:22:15,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2020-12-23 16:22:15,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-12-23 16:22:15,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 372 transitions. [2020-12-23 16:22:15,959 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 372 transitions. Word has length 107 [2020-12-23 16:22:15,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:22:15,959 INFO L481 AbstractCegarLoop]: Abstraction has 311 states and 372 transitions. [2020-12-23 16:22:15,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 16:22:15,959 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 372 transitions. [2020-12-23 16:22:15,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-23 16:22:15,960 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:22:15,961 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] [2020-12-23 16:22:16,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:22:16,175 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:22:16,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:22:16,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1565711905, now seen corresponding path program 2 times [2020-12-23 16:22:16,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:22:16,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601890093] [2020-12-23 16:22:16,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:22:16,195 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:22:16,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932914108] [2020-12-23 16:22:16,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:22:16,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:22:16,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:22:16,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 16:22:16,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:22:16,753 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 16:22:16,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601890093] [2020-12-23 16:22:16,754 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:22:16,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932914108] [2020-12-23 16:22:16,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 16:22:16,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 16:22:16,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512206734] [2020-12-23 16:22:16,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 16:22:16,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:22:16,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 16:22:16,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:22:16,757 INFO L87 Difference]: Start difference. First operand 311 states and 372 transitions. Second operand 6 states. [2020-12-23 16:22:16,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:22:16,822 INFO L93 Difference]: Finished difference Result 576 states and 695 transitions. [2020-12-23 16:22:16,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 16:22:16,823 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2020-12-23 16:22:16,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:22:16,825 INFO L225 Difference]: With dead ends: 576 [2020-12-23 16:22:16,825 INFO L226 Difference]: Without dead ends: 313 [2020-12-23 16:22:16,826 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 [2020-12-23 16:22:16,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-12-23 16:22:16,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2020-12-23 16:22:16,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-12-23 16:22:16,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 374 transitions. [2020-12-23 16:22:16,839 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 374 transitions. Word has length 109 [2020-12-23 16:22:16,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:22:16,840 INFO L481 AbstractCegarLoop]: Abstraction has 313 states and 374 transitions. [2020-12-23 16:22:16,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 16:22:16,840 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 374 transitions. [2020-12-23 16:22:16,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-23 16:22:16,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:22:16,842 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] [2020-12-23 16:22:17,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:22:17,051 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:22:17,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:22:17,052 INFO L82 PathProgramCache]: Analyzing trace with hash -383989728, now seen corresponding path program 3 times [2020-12-23 16:22:17,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:22:17,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53187798] [2020-12-23 16:22:17,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:22:17,075 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:22:17,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776254438] [2020-12-23 16:22:17,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:22:17,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 16:22:17,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:22:17,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 16:22:17,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:22:17,607 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-23 16:22:17,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53187798] [2020-12-23 16:22:17,608 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:22:17,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776254438] [2020-12-23 16:22:17,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:22:17,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:22:17,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673222233] [2020-12-23 16:22:17,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:22:17,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:22:17,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:22:17,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:22:17,610 INFO L87 Difference]: Start difference. First operand 313 states and 374 transitions. Second operand 4 states. [2020-12-23 16:22:17,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:22:17,961 INFO L93 Difference]: Finished difference Result 644 states and 770 transitions. [2020-12-23 16:22:17,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:22:17,962 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-12-23 16:22:17,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:22:17,964 INFO L225 Difference]: With dead ends: 644 [2020-12-23 16:22:17,964 INFO L226 Difference]: Without dead ends: 379 [2020-12-23 16:22:17,965 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 [2020-12-23 16:22:17,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-12-23 16:22:17,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 372. [2020-12-23 16:22:17,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-12-23 16:22:17,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 442 transitions. [2020-12-23 16:22:17,980 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 442 transitions. Word has length 111 [2020-12-23 16:22:17,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:22:17,980 INFO L481 AbstractCegarLoop]: Abstraction has 372 states and 442 transitions. [2020-12-23 16:22:17,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:22:17,980 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 442 transitions. [2020-12-23 16:22:17,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-23 16:22:17,982 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:22:17,982 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] [2020-12-23 16:22:18,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 16:22:18,197 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:22:18,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:22:18,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1107954682, now seen corresponding path program 1 times [2020-12-23 16:22:18,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:22:18,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256802462] [2020-12-23 16:22:18,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:22:18,216 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:22:18,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1235431275] [2020-12-23 16:22:18,217 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 [2020-12-23 16:22:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:22:18,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 16:22:18,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:22:18,682 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-23 16:22:18,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256802462] [2020-12-23 16:22:18,683 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:22:18,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235431275] [2020-12-23 16:22:18,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 16:22:18,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 16:22:18,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206023138] [2020-12-23 16:22:18,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 16:22:18,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:22:18,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 16:22:18,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:22:18,685 INFO L87 Difference]: Start difference. First operand 372 states and 442 transitions. Second operand 7 states. [2020-12-23 16:22:18,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:22:18,763 INFO L93 Difference]: Finished difference Result 691 states and 827 transitions. [2020-12-23 16:22:18,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 16:22:18,763 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-12-23 16:22:18,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:22:18,766 INFO L225 Difference]: With dead ends: 691 [2020-12-23 16:22:18,766 INFO L226 Difference]: Without dead ends: 374 [2020-12-23 16:22:18,767 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 [2020-12-23 16:22:18,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2020-12-23 16:22:18,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2020-12-23 16:22:18,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-12-23 16:22:18,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 444 transitions. [2020-12-23 16:22:18,780 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 444 transitions. Word has length 118 [2020-12-23 16:22:18,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:22:18,781 INFO L481 AbstractCegarLoop]: Abstraction has 374 states and 444 transitions. [2020-12-23 16:22:18,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 16:22:18,781 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 444 transitions. [2020-12-23 16:22:18,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-12-23 16:22:18,782 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:22:18,782 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] [2020-12-23 16:22:18,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 16:22:18,997 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:22:18,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:22:18,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1744267321, now seen corresponding path program 2 times [2020-12-23 16:22:18,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:22:18,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817026092] [2020-12-23 16:22:18,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:22:19,015 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:22:19,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [511393140] [2020-12-23 16:22:19,016 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 [2020-12-23 16:22:19,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:22:19,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:22:19,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 16:22:19,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:22:19,757 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-23 16:22:19,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817026092] [2020-12-23 16:22:19,757 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:22:19,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511393140] [2020-12-23 16:22:19,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 16:22:19,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 16:22:19,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933445385] [2020-12-23 16:22:19,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 16:22:19,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:22:19,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 16:22:19,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-23 16:22:19,761 INFO L87 Difference]: Start difference. First operand 374 states and 444 transitions. Second operand 8 states. [2020-12-23 16:22:19,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:22:19,827 INFO L93 Difference]: Finished difference Result 694 states and 830 transitions. [2020-12-23 16:22:19,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 16:22:19,829 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 120 [2020-12-23 16:22:19,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:22:19,831 INFO L225 Difference]: With dead ends: 694 [2020-12-23 16:22:19,832 INFO L226 Difference]: Without dead ends: 376 [2020-12-23 16:22:19,835 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 [2020-12-23 16:22:19,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-12-23 16:22:19,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2020-12-23 16:22:19,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-12-23 16:22:19,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 446 transitions. [2020-12-23 16:22:19,858 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 446 transitions. Word has length 120 [2020-12-23 16:22:19,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:22:19,859 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 446 transitions. [2020-12-23 16:22:19,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 16:22:19,859 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 446 transitions. [2020-12-23 16:22:19,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-23 16:22:19,861 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:22:19,861 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] [2020-12-23 16:22:20,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-23 16:22:20,075 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:22:20,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:22:20,075 INFO L82 PathProgramCache]: Analyzing trace with hash -994826982, now seen corresponding path program 3 times [2020-12-23 16:22:20,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:22:20,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894543944] [2020-12-23 16:22:20,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:22:20,091 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:22:20,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1816819173] [2020-12-23 16:22:20,092 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