/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_test3-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 16:17:49,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 16:17:49,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 16:17:49,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-23 16:17:49,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 16:17:49,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 16:17:49,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 16:17:49,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 16:17:49,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 16:17:49,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 16:17:49,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 16:17:49,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 16:17:49,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 16:17:49,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 16:17:49,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 16:17:49,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 16:17:50,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 16:17:50,024 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 16:17:50,075 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 16:17:50,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 16:17:50,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 16:17:50,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 16:17:50,081 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 16:17:50,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 16:17:50,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 16:17:50,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 16:17:50,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 16:17:50,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 16:17:50,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 16:17:50,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 16:17:50,084 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 16:17:50,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 16:17:50,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 16:17:50,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 16:17:50,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 16:17:50,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 16:17:50,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 16:17:50,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 16:17:50,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 16:17:50,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 16:17:50,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 16:17:50,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 16:17:50,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 16:17:50,087 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 16:17:50,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 16:17:50,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 16:17:50,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 16:17:50,539 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 16:17:50,540 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 16:17:50,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i [2020-12-23 16:17:50,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9e91c9531/bfeaa43a90df48a99a05b342ad5d4f3a/FLAG091d22c9e [2020-12-23 16:17:51,458 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 16:17:51,459 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i [2020-12-23 16:17:51,490 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9e91c9531/bfeaa43a90df48a99a05b342ad5d4f3a/FLAG091d22c9e [2020-12-23 16:17:51,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9e91c9531/bfeaa43a90df48a99a05b342ad5d4f3a [2020-12-23 16:17:51,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 16:17:51,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 16:17:51,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 16:17:51,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 16:17:51,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 16:17:51,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:17:51" (1/1) ... [2020-12-23 16:17:51,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a36f9b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:17:51, skipping insertion in model container [2020-12-23 16:17:51,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:17:51" (1/1) ... [2020-12-23 16:17:51,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 16:17:51,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 16:17:52,321 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_test3-1.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~mem37,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem37,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem38,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[#t~mem38,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem39,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[12],StructAccessExpression[IdentifierExpression[#t~mem39,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem40,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[28],StructAccessExpression[IdentifierExpression[#t~mem40,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem41,],base],StructAccessExpression[IdentifierExpression[#t~mem41,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem43,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[48],StructAccessExpression[IdentifierExpression[#t~mem43,],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~mem56,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[#t~mem56,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem57,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem57,],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~mem69,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem69,],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~mem81,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[#t~mem81,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem91,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[36],StructAccessExpression[IdentifierExpression[#t~mem91,],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~mem117,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem117,],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~mem125,],base],StructAccessExpression[IdentifierExpression[#t~mem125,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem126,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[40],StructAccessExpression[IdentifierExpression[#t~mem126,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem136,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[44],StructAccessExpression[IdentifierExpression[#t~mem136,],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~mem188,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem188,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem193,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[#t~mem193,],offset],IdentifierExpression[#t~mem195,]]]]] left hand side expression in assignment: lhs: VariableLHS[~users~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem199,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[#t~mem199,],offset],IdentifierExpression[#t~mem201,]]]]] 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~mem213,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[#t~mem213,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem216,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem216,],offset]]]] [2020-12-23 16:17:52,535 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_test3-1.i[44590,44603] left hand side expression in assignment: lhs: VariableLHS[~user~0,] left hand side expression in assignment: lhs: VariableLHS[~user~0,] [2020-12-23 16:17:52,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:17:52,559 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 16:17:52,606 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_test3-1.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~mem42,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem42,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem43,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[#t~mem43,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem44,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[12],StructAccessExpression[IdentifierExpression[#t~mem44,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem45,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[28],StructAccessExpression[IdentifierExpression[#t~mem45,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem46,],base],StructAccessExpression[IdentifierExpression[#t~mem46,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem48,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[48],StructAccessExpression[IdentifierExpression[#t~mem48,],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~mem61,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[#t~mem61,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem62,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem62,],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~mem74,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem74,],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~mem88,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[#t~mem88,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem98,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[36],StructAccessExpression[IdentifierExpression[#t~mem98,],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~mem125,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem125,],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~mem133,],base],StructAccessExpression[IdentifierExpression[#t~mem133,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem135,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[40],StructAccessExpression[IdentifierExpression[#t~mem135,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem145,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[44],StructAccessExpression[IdentifierExpression[#t~mem145,],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~mem199,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem199,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem204,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[#t~mem204,],offset],IdentifierExpression[#t~mem206,]]]]] left hand side expression in assignment: lhs: VariableLHS[~users~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem210,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[#t~mem210,],offset],IdentifierExpression[#t~mem212,]]]]] 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~mem224,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[#t~mem224,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem227,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem227,],offset]]]] [2020-12-23 16:17:52,827 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_test3-1.i[44590,44603] left hand side expression in assignment: lhs: VariableLHS[~user~0,] left hand side expression in assignment: lhs: VariableLHS[~user~0,] [2020-12-23 16:17:52,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:17:52,951 INFO L208 MainTranslator]: Completed translation [2020-12-23 16:17:52,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:17:52 WrapperNode [2020-12-23 16:17:52,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 16:17:52,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 16:17:52,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 16:17:52,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 16:17:52,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:17:52" (1/1) ... [2020-12-23 16:17:53,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:17:52" (1/1) ... [2020-12-23 16:17:53,110 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 16:17:53,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 16:17:53,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 16:17:53,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 16:17:53,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:17:52" (1/1) ... [2020-12-23 16:17:53,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:17:52" (1/1) ... [2020-12-23 16:17:53,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:17:52" (1/1) ... [2020-12-23 16:17:53,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:17:52" (1/1) ... [2020-12-23 16:17:53,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:17:52" (1/1) ... [2020-12-23 16:17:53,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:17:52" (1/1) ... [2020-12-23 16:17:53,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:17:52" (1/1) ... [2020-12-23 16:17:53,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 16:17:53,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 16:17:53,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 16:17:53,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 16:17:53,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:17:52" (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 16:17:53,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 16:17:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 16:17:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 16:17:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-23 16:17:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 16:17:53,447 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-12-23 16:17:53,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-23 16:17:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 16:17:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 16:17:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 16:17:53,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 16:17:55,689 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 16:17:55,689 INFO L299 CfgBuilder]: Removed 85 assume(true) statements. [2020-12-23 16:17:55,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:17:55 BoogieIcfgContainer [2020-12-23 16:17:55,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 16:17:55,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 16:17:55,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 16:17:55,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 16:17:55,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 04:17:51" (1/3) ... [2020-12-23 16:17:55,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439b2a02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:17:55, skipping insertion in model container [2020-12-23 16:17:55,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:17:52" (2/3) ... [2020-12-23 16:17:55,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439b2a02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:17:55, skipping insertion in model container [2020-12-23 16:17:55,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:17:55" (3/3) ... [2020-12-23 16:17:55,702 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test3-1.i [2020-12-23 16:17:55,709 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 16:17:55,716 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-23 16:17:55,738 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-23 16:17:55,770 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 16:17:55,770 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 16:17:55,770 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 16:17:55,770 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 16:17:55,770 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 16:17:55,771 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 16:17:55,771 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 16:17:55,771 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 16:17:55,795 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2020-12-23 16:17:55,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 16:17:55,803 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:17:55,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:17:55,804 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:17:55,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:17:55,812 INFO L82 PathProgramCache]: Analyzing trace with hash 239232295, now seen corresponding path program 1 times [2020-12-23 16:17:55,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:17:55,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923349649] [2020-12-23 16:17:55,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:17:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:17:56,005 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 16:17:56,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923349649] [2020-12-23 16:17:56,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:17:56,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:17:56,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923680308] [2020-12-23 16:17:56,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 16:17:56,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:17:56,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 16:17:56,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 16:17:56,032 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 2 states. [2020-12-23 16:17:56,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:17:56,106 INFO L93 Difference]: Finished difference Result 402 states and 670 transitions. [2020-12-23 16:17:56,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 16:17:56,109 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-23 16:17:56,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:17:56,131 INFO L225 Difference]: With dead ends: 402 [2020-12-23 16:17:56,131 INFO L226 Difference]: Without dead ends: 198 [2020-12-23 16:17:56,136 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 16:17:56,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-12-23 16:17:56,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-12-23 16:17:56,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-12-23 16:17:56,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 259 transitions. [2020-12-23 16:17:56,228 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 259 transitions. Word has length 9 [2020-12-23 16:17:56,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:17:56,228 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 259 transitions. [2020-12-23 16:17:56,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 16:17:56,229 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 259 transitions. [2020-12-23 16:17:56,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 16:17:56,230 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:17:56,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:17:56,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 16:17:56,230 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:17:56,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:17:56,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1042319138, now seen corresponding path program 1 times [2020-12-23 16:17:56,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:17:56,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61190627] [2020-12-23 16:17:56,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:17:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:17:56,341 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 16:17:56,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61190627] [2020-12-23 16:17:56,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:17:56,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:17:56,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962928612] [2020-12-23 16:17:56,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:17:56,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:17:56,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:17:56,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:17:56,345 INFO L87 Difference]: Start difference. First operand 198 states and 259 transitions. Second operand 4 states. [2020-12-23 16:17:56,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:17:56,960 INFO L93 Difference]: Finished difference Result 445 states and 582 transitions. [2020-12-23 16:17:56,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:17:56,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-23 16:17:56,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:17:56,965 INFO L225 Difference]: With dead ends: 445 [2020-12-23 16:17:56,969 INFO L226 Difference]: Without dead ends: 337 [2020-12-23 16:17:56,971 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 16:17:56,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-12-23 16:17:57,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 200. [2020-12-23 16:17:57,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-12-23 16:17:57,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 261 transitions. [2020-12-23 16:17:57,007 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 261 transitions. Word has length 12 [2020-12-23 16:17:57,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:17:57,008 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 261 transitions. [2020-12-23 16:17:57,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:17:57,009 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 261 transitions. [2020-12-23 16:17:57,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 16:17:57,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:17:57,013 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] [2020-12-23 16:17:57,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 16:17:57,015 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:17:57,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:17:57,016 INFO L82 PathProgramCache]: Analyzing trace with hash 168111628, now seen corresponding path program 1 times [2020-12-23 16:17:57,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:17:57,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762310169] [2020-12-23 16:17:57,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:17:57,073 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:17:57,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [536385819] [2020-12-23 16:17:57,074 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 16:17:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:17:57,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 16:17:57,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:17:57,408 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 16:17:57,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762310169] [2020-12-23 16:17:57,410 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:17:57,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536385819] [2020-12-23 16:17:57,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:17:57,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:17:57,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553911605] [2020-12-23 16:17:57,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:17:57,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:17:57,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:17:57,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:17:57,413 INFO L87 Difference]: Start difference. First operand 200 states and 261 transitions. Second operand 3 states. [2020-12-23 16:17:57,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:17:57,514 INFO L93 Difference]: Finished difference Result 417 states and 549 transitions. [2020-12-23 16:17:57,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:17:57,515 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-23 16:17:57,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:17:57,518 INFO L225 Difference]: With dead ends: 417 [2020-12-23 16:17:57,519 INFO L226 Difference]: Without dead ends: 221 [2020-12-23 16:17:57,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 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 16:17:57,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-12-23 16:17:57,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 220. [2020-12-23 16:17:57,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-12-23 16:17:57,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 281 transitions. [2020-12-23 16:17:57,556 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 281 transitions. Word has length 64 [2020-12-23 16:17:57,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:17:57,556 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 281 transitions. [2020-12-23 16:17:57,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:17:57,557 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 281 transitions. [2020-12-23 16:17:57,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 16:17:57,559 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:17:57,559 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] [2020-12-23 16:17:57,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 16:17:57,774 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:17:57,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:17:57,776 INFO L82 PathProgramCache]: Analyzing trace with hash 521200010, now seen corresponding path program 1 times [2020-12-23 16:17:57,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:17:57,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259554886] [2020-12-23 16:17:57,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:17:57,803 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:17:57,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [814512751] [2020-12-23 16:17:57,804 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 16:17:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:17:57,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 16:17:57,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:17:58,102 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 16:17:58,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259554886] [2020-12-23 16:17:58,103 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:17:58,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814512751] [2020-12-23 16:17:58,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:17:58,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:17:58,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329713819] [2020-12-23 16:17:58,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:17:58,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:17:58,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:17:58,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:17:58,109 INFO L87 Difference]: Start difference. First operand 220 states and 281 transitions. Second operand 4 states. [2020-12-23 16:17:58,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:17:58,243 INFO L93 Difference]: Finished difference Result 428 states and 550 transitions. [2020-12-23 16:17:58,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:17:58,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-12-23 16:17:58,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:17:58,245 INFO L225 Difference]: With dead ends: 428 [2020-12-23 16:17:58,245 INFO L226 Difference]: Without dead ends: 212 [2020-12-23 16:17:58,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 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 16:17:58,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-12-23 16:17:58,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 206. [2020-12-23 16:17:58,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-12-23 16:17:58,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 260 transitions. [2020-12-23 16:17:58,265 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 260 transitions. Word has length 64 [2020-12-23 16:17:58,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:17:58,265 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 260 transitions. [2020-12-23 16:17:58,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:17:58,266 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 260 transitions. [2020-12-23 16:17:58,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 16:17:58,274 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:17:58,275 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] [2020-12-23 16:17:58,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:17:58,489 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:17:58,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:17:58,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1012352744, now seen corresponding path program 1 times [2020-12-23 16:17:58,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:17:58,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401943560] [2020-12-23 16:17:58,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:17:58,514 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:17:58,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1449464444] [2020-12-23 16:17:58,515 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 16:17:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:17:58,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 16:17:58,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:17:58,778 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 16:17:58,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401943560] [2020-12-23 16:17:58,778 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:17:58,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449464444] [2020-12-23 16:17:58,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:17:58,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:17:58,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937942415] [2020-12-23 16:17:58,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:17:58,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:17:58,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:17:58,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:17:58,781 INFO L87 Difference]: Start difference. First operand 206 states and 260 transitions. Second operand 3 states. [2020-12-23 16:17:58,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:17:58,897 INFO L93 Difference]: Finished difference Result 542 states and 683 transitions. [2020-12-23 16:17:58,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:17:58,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-23 16:17:58,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:17:58,900 INFO L225 Difference]: With dead ends: 542 [2020-12-23 16:17:58,901 INFO L226 Difference]: Without dead ends: 340 [2020-12-23 16:17:58,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 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 16:17:58,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-12-23 16:17:58,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 312. [2020-12-23 16:17:58,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-12-23 16:17:58,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 393 transitions. [2020-12-23 16:17:58,915 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 393 transitions. Word has length 64 [2020-12-23 16:17:58,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:17:58,916 INFO L481 AbstractCegarLoop]: Abstraction has 312 states and 393 transitions. [2020-12-23 16:17:58,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:17:58,916 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 393 transitions. [2020-12-23 16:17:58,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-23 16:17:58,917 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:17:58,918 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 16:17:59,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:17:59,134 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:17:59,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:17:59,135 INFO L82 PathProgramCache]: Analyzing trace with hash -147792665, now seen corresponding path program 1 times [2020-12-23 16:17:59,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:17:59,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375349354] [2020-12-23 16:17:59,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:17:59,163 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:17:59,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453350291] [2020-12-23 16:17:59,164 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 16:17:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:17:59,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 16:17:59,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:17:59,493 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 16:17:59,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375349354] [2020-12-23 16:17:59,494 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:17:59,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453350291] [2020-12-23 16:17:59,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:17:59,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:17:59,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261502798] [2020-12-23 16:17:59,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:17:59,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:17:59,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:17:59,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:17:59,498 INFO L87 Difference]: Start difference. First operand 312 states and 393 transitions. Second operand 3 states. [2020-12-23 16:17:59,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:17:59,535 INFO L93 Difference]: Finished difference Result 578 states and 737 transitions. [2020-12-23 16:17:59,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:17:59,536 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-23 16:17:59,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:17:59,539 INFO L225 Difference]: With dead ends: 578 [2020-12-23 16:17:59,539 INFO L226 Difference]: Without dead ends: 314 [2020-12-23 16:17:59,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 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 16:17:59,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-12-23 16:17:59,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2020-12-23 16:17:59,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-12-23 16:17:59,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 395 transitions. [2020-12-23 16:17:59,558 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 395 transitions. Word has length 71 [2020-12-23 16:17:59,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:17:59,558 INFO L481 AbstractCegarLoop]: Abstraction has 314 states and 395 transitions. [2020-12-23 16:17:59,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:17:59,558 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 395 transitions. [2020-12-23 16:17:59,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 16:17:59,560 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:17:59,560 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, 1, 1] [2020-12-23 16:17:59,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:17:59,775 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:17:59,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:17:59,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1386404344, now seen corresponding path program 1 times [2020-12-23 16:17:59,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:17:59,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156040366] [2020-12-23 16:17:59,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:17:59,812 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:17:59,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [112741374] [2020-12-23 16:17:59,814 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 16:18:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:18:00,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 16:18:00,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:18:00,093 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 16:18:00,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156040366] [2020-12-23 16:18:00,094 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:18:00,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112741374] [2020-12-23 16:18:00,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 16:18:00,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-23 16:18:00,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440293192] [2020-12-23 16:18:00,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:18:00,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:18:00,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:18:00,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:18:00,097 INFO L87 Difference]: Start difference. First operand 314 states and 395 transitions. Second operand 4 states. [2020-12-23 16:18:00,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:18:00,166 INFO L93 Difference]: Finished difference Result 582 states and 741 transitions. [2020-12-23 16:18:00,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:18:00,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-12-23 16:18:00,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:18:00,169 INFO L225 Difference]: With dead ends: 582 [2020-12-23 16:18:00,169 INFO L226 Difference]: Without dead ends: 316 [2020-12-23 16:18:00,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 70 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 16:18:00,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-12-23 16:18:00,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2020-12-23 16:18:00,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-12-23 16:18:00,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 397 transitions. [2020-12-23 16:18:00,182 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 397 transitions. Word has length 73 [2020-12-23 16:18:00,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:18:00,183 INFO L481 AbstractCegarLoop]: Abstraction has 316 states and 397 transitions. [2020-12-23 16:18:00,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:18:00,183 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 397 transitions. [2020-12-23 16:18:00,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-23 16:18:00,184 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:18:00,184 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] [2020-12-23 16:18:00,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 16:18:00,399 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:18:00,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:18:00,400 INFO L82 PathProgramCache]: Analyzing trace with hash -182577209, now seen corresponding path program 2 times [2020-12-23 16:18:00,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:18:00,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685714160] [2020-12-23 16:18:00,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:18:00,429 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:18:00,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [506655435] [2020-12-23 16:18:00,430 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 16:18:00,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 16:18:00,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:18:00,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 16:18:00,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:18:00,655 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 16:18:00,657 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:18:00,660 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:18:00,662 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:18:00,663 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-12-23 16:18:00,681 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 16:18:00,683 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:18:00,685 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:18:00,686 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 16:18:00,686 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-23 16:18:00,697 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 16:18:00,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685714160] [2020-12-23 16:18:00,698 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:18:00,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506655435] [2020-12-23 16:18:00,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:18:00,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:18:00,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81402095] [2020-12-23 16:18:00,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:18:00,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:18:00,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:18:00,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:18:00,701 INFO L87 Difference]: Start difference. First operand 316 states and 397 transitions. Second operand 4 states. [2020-12-23 16:18:01,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:18:01,247 INFO L93 Difference]: Finished difference Result 425 states and 541 transitions. [2020-12-23 16:18:01,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:18:01,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-12-23 16:18:01,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:18:01,251 INFO L225 Difference]: With dead ends: 425 [2020-12-23 16:18:01,251 INFO L226 Difference]: Without dead ends: 400 [2020-12-23 16:18:01,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 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 16:18:01,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-12-23 16:18:01,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 318. [2020-12-23 16:18:01,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-12-23 16:18:01,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 399 transitions. [2020-12-23 16:18:01,267 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 399 transitions. Word has length 75 [2020-12-23 16:18:01,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:18:01,268 INFO L481 AbstractCegarLoop]: Abstraction has 318 states and 399 transitions. [2020-12-23 16:18:01,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:18:01,268 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 399 transitions. [2020-12-23 16:18:01,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-23 16:18:01,269 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:18:01,269 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 16:18:01,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:18:01,484 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:18:01,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:18:01,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1878713718, now seen corresponding path program 1 times [2020-12-23 16:18:01,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:18:01,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279914830] [2020-12-23 16:18:01,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:18:01,509 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:18:01,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2055678862] [2020-12-23 16:18:01,510 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 16:18:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:18:01,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 16:18:01,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:18:01,851 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 16:18:01,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279914830] [2020-12-23 16:18:01,852 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:18:01,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055678862] [2020-12-23 16:18:01,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:18:01,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:18:01,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850041675] [2020-12-23 16:18:01,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:18:01,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:18:01,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:18:01,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:18:01,859 INFO L87 Difference]: Start difference. First operand 318 states and 399 transitions. Second operand 3 states. [2020-12-23 16:18:01,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:18:01,941 INFO L93 Difference]: Finished difference Result 529 states and 685 transitions. [2020-12-23 16:18:01,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:18:01,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-23 16:18:01,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:18:01,946 INFO L225 Difference]: With dead ends: 529 [2020-12-23 16:18:01,946 INFO L226 Difference]: Without dead ends: 360 [2020-12-23 16:18:01,948 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 16:18:01,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-12-23 16:18:01,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 358. [2020-12-23 16:18:01,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-12-23 16:18:01,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 439 transitions. [2020-12-23 16:18:01,961 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 439 transitions. Word has length 107 [2020-12-23 16:18:01,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:18:01,963 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 439 transitions. [2020-12-23 16:18:01,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:18:01,963 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 439 transitions. [2020-12-23 16:18:01,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-23 16:18:01,964 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:18:01,964 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 16:18:02,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:18:02,178 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:18:02,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:18:02,179 INFO L82 PathProgramCache]: Analyzing trace with hash 2096048526, now seen corresponding path program 1 times [2020-12-23 16:18:02,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:18:02,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771239] [2020-12-23 16:18:02,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:18:02,227 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:18:02,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987287043] [2020-12-23 16:18:02,228 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 16:18:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:18:02,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 16:18:02,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:18:02,569 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 16:18:02,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771239] [2020-12-23 16:18:02,570 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:18:02,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987287043] [2020-12-23 16:18:02,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:18:02,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:18:02,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093504594] [2020-12-23 16:18:02,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:18:02,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:18:02,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:18:02,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:18:02,573 INFO L87 Difference]: Start difference. First operand 358 states and 439 transitions. Second operand 4 states. [2020-12-23 16:18:02,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:18:02,660 INFO L93 Difference]: Finished difference Result 544 states and 680 transitions. [2020-12-23 16:18:02,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:18:02,661 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-12-23 16:18:02,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:18:02,663 INFO L225 Difference]: With dead ends: 544 [2020-12-23 16:18:02,664 INFO L226 Difference]: Without dead ends: 335 [2020-12-23 16:18:02,665 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 16:18:02,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-12-23 16:18:02,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 330. [2020-12-23 16:18:02,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-12-23 16:18:02,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 397 transitions. [2020-12-23 16:18:02,680 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 397 transitions. Word has length 107 [2020-12-23 16:18:02,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:18:02,681 INFO L481 AbstractCegarLoop]: Abstraction has 330 states and 397 transitions. [2020-12-23 16:18:02,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:18:02,681 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 397 transitions. [2020-12-23 16:18:02,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-23 16:18:02,682 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:18:02,683 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 16:18:02,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 16:18:02,898 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:18:02,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:18:02,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1213199680, now seen corresponding path program 1 times [2020-12-23 16:18:02,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:18:02,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909579793] [2020-12-23 16:18:02,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:18:02,917 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:18:02,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1727392846] [2020-12-23 16:18:02,917 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 16:18:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:18:03,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 16:18:03,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:18:03,250 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 16:18:03,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909579793] [2020-12-23 16:18:03,251 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:18:03,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727392846] [2020-12-23 16:18:03,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 16:18:03,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 16:18:03,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203209826] [2020-12-23 16:18:03,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 16:18:03,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:18:03,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 16:18:03,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:18:03,253 INFO L87 Difference]: Start difference. First operand 330 states and 397 transitions. Second operand 5 states. [2020-12-23 16:18:03,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:18:03,303 INFO L93 Difference]: Finished difference Result 614 states and 745 transitions. [2020-12-23 16:18:03,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 16:18:03,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-12-23 16:18:03,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:18:03,307 INFO L225 Difference]: With dead ends: 614 [2020-12-23 16:18:03,307 INFO L226 Difference]: Without dead ends: 332 [2020-12-23 16:18:03,308 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 16:18:03,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-12-23 16:18:03,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2020-12-23 16:18:03,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-12-23 16:18:03,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 399 transitions. [2020-12-23 16:18:03,345 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 399 transitions. Word has length 107 [2020-12-23 16:18:03,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:18:03,347 INFO L481 AbstractCegarLoop]: Abstraction has 332 states and 399 transitions. [2020-12-23 16:18:03,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 16:18:03,347 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 399 transitions. [2020-12-23 16:18:03,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-23 16:18:03,350 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:18:03,353 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 16:18:03,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:18:03,568 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:18:03,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:18:03,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1565711905, now seen corresponding path program 2 times [2020-12-23 16:18:03,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:18:03,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745794671] [2020-12-23 16:18:03,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:18:03,592 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:18:03,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2036295137] [2020-12-23 16:18:03,593 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 16:18:03,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:18:03,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:18:03,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 16:18:03,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:18:03,982 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 16:18:03,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745794671] [2020-12-23 16:18:03,983 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:18:03,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036295137] [2020-12-23 16:18:03,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 16:18:03,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 16:18:03,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236661684] [2020-12-23 16:18:03,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 16:18:03,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:18:03,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 16:18:03,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:18:03,985 INFO L87 Difference]: Start difference. First operand 332 states and 399 transitions. Second operand 6 states. [2020-12-23 16:18:04,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:18:04,038 INFO L93 Difference]: Finished difference Result 618 states and 749 transitions. [2020-12-23 16:18:04,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 16:18:04,039 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2020-12-23 16:18:04,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:18:04,041 INFO L225 Difference]: With dead ends: 618 [2020-12-23 16:18:04,041 INFO L226 Difference]: Without dead ends: 334 [2020-12-23 16:18:04,042 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 16:18:04,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-12-23 16:18:04,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2020-12-23 16:18:04,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-12-23 16:18:04,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 401 transitions. [2020-12-23 16:18:04,054 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 401 transitions. Word has length 109 [2020-12-23 16:18:04,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:18:04,054 INFO L481 AbstractCegarLoop]: Abstraction has 334 states and 401 transitions. [2020-12-23 16:18:04,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 16:18:04,055 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 401 transitions. [2020-12-23 16:18:04,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-23 16:18:04,056 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:18:04,056 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 16:18:04,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:18:04,270 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:18:04,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:18:04,271 INFO L82 PathProgramCache]: Analyzing trace with hash -383989728, now seen corresponding path program 3 times [2020-12-23 16:18:04,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:18:04,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322757858] [2020-12-23 16:18:04,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:18:04,291 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:18:04,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1477010734] [2020-12-23 16:18:04,292 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 16:18:04,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 16:18:04,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:18:04,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 16:18:04,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:18:04,837 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 16:18:04,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322757858] [2020-12-23 16:18:04,841 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:18:04,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477010734] [2020-12-23 16:18:04,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:18:04,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:18:04,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073494362] [2020-12-23 16:18:04,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:18:04,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:18:04,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:18:04,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:18:04,844 INFO L87 Difference]: Start difference. First operand 334 states and 401 transitions. Second operand 4 states. [2020-12-23 16:18:05,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:18:05,155 INFO L93 Difference]: Finished difference Result 708 states and 852 transitions. [2020-12-23 16:18:05,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 16:18:05,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-12-23 16:18:05,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:18:05,159 INFO L225 Difference]: With dead ends: 708 [2020-12-23 16:18:05,159 INFO L226 Difference]: Without dead ends: 422 [2020-12-23 16:18:05,160 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 16:18:05,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2020-12-23 16:18:05,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 393. [2020-12-23 16:18:05,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-12-23 16:18:05,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 469 transitions. [2020-12-23 16:18:05,176 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 469 transitions. Word has length 111 [2020-12-23 16:18:05,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:18:05,176 INFO L481 AbstractCegarLoop]: Abstraction has 393 states and 469 transitions. [2020-12-23 16:18:05,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:18:05,176 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 469 transitions. [2020-12-23 16:18:05,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-23 16:18:05,178 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:18:05,178 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 16:18:05,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 16:18:05,394 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:18:05,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:18:05,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1107954682, now seen corresponding path program 1 times [2020-12-23 16:18:05,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:18:05,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064678332] [2020-12-23 16:18:05,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:18:05,413 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:18:05,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2062398160] [2020-12-23 16:18:05,414 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 16:18:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:18:05,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 16:18:05,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:18:05,776 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 16:18:05,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064678332] [2020-12-23 16:18:05,777 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:18:05,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062398160] [2020-12-23 16:18:05,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 16:18:05,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 16:18:05,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368709468] [2020-12-23 16:18:05,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 16:18:05,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:18:05,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 16:18:05,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:18:05,779 INFO L87 Difference]: Start difference. First operand 393 states and 469 transitions. Second operand 7 states. [2020-12-23 16:18:05,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:18:05,838 INFO L93 Difference]: Finished difference Result 733 states and 881 transitions. [2020-12-23 16:18:05,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 16:18:05,838 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-12-23 16:18:05,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:18:05,841 INFO L225 Difference]: With dead ends: 733 [2020-12-23 16:18:05,841 INFO L226 Difference]: Without dead ends: 395 [2020-12-23 16:18:05,843 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 16:18:05,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-12-23 16:18:05,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2020-12-23 16:18:05,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-12-23 16:18:05,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 471 transitions. [2020-12-23 16:18:05,860 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 471 transitions. Word has length 118 [2020-12-23 16:18:05,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:18:05,860 INFO L481 AbstractCegarLoop]: Abstraction has 395 states and 471 transitions. [2020-12-23 16:18:05,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 16:18:05,860 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 471 transitions. [2020-12-23 16:18:05,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-12-23 16:18:05,862 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:18:05,862 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 16:18:06,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 16:18:06,078 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:18:06,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:18:06,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1744267321, now seen corresponding path program 2 times [2020-12-23 16:18:06,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:18:06,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43002002] [2020-12-23 16:18:06,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:18:06,097 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:18:06,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [794903908] [2020-12-23 16:18:06,098 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 16:18:08,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:18:08,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:18:08,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 16:18:08,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:18:08,233 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 16:18:08,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43002002] [2020-12-23 16:18:08,234 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:18:08,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794903908] [2020-12-23 16:18:08,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 16:18:08,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 16:18:08,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033195817] [2020-12-23 16:18:08,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 16:18:08,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:18:08,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 16:18:08,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-23 16:18:08,236 INFO L87 Difference]: Start difference. First operand 395 states and 471 transitions. Second operand 8 states. [2020-12-23 16:18:08,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:18:08,304 INFO L93 Difference]: Finished difference Result 736 states and 884 transitions. [2020-12-23 16:18:08,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 16:18:08,305 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 120 [2020-12-23 16:18:08,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:18:08,307 INFO L225 Difference]: With dead ends: 736 [2020-12-23 16:18:08,307 INFO L226 Difference]: Without dead ends: 397 [2020-12-23 16:18:08,308 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 16:18:08,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-12-23 16:18:08,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2020-12-23 16:18:08,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-12-23 16:18:08,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 473 transitions. [2020-12-23 16:18:08,324 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 473 transitions. Word has length 120 [2020-12-23 16:18:08,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:18:08,324 INFO L481 AbstractCegarLoop]: Abstraction has 397 states and 473 transitions. [2020-12-23 16:18:08,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 16:18:08,324 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 473 transitions. [2020-12-23 16:18:08,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-23 16:18:08,326 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:18:08,326 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 16:18:08,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-23 16:18:08,532 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:18:08,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:18:08,533 INFO L82 PathProgramCache]: Analyzing trace with hash -994826982, now seen corresponding path program 3 times [2020-12-23 16:18:08,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:18:08,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847223271] [2020-12-23 16:18:08,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:18:08,548 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:18:08,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [965886390] [2020-12-23 16:18:08,548 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