/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_SFH_test7-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 16:36:59,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 16:36:59,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 16:36:59,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-23 16:36:59,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 16:36:59,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 16:36:59,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 16:36:59,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 16:36:59,968 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 16:36:59,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 16:36:59,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 16:36:59,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 16:36:59,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 16:36:59,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 16:36:59,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 16:36:59,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 16:36:59,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 16:37:00,029 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 16:37:00,103 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 16:37:00,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 16:37:00,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 16:37:00,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 16:37:00,108 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 16:37:00,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 16:37:00,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 16:37:00,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 16:37:00,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 16:37:00,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 16:37:00,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 16:37:00,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 16:37:00,111 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 16:37:00,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 16:37:00,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 16:37:00,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 16:37:00,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 16:37:00,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 16:37:00,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 16:37:00,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 16:37:00,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 16:37:00,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 16:37:00,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 16:37:00,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 16:37:00,115 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 16:37:00,116 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 16:37:00,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 16:37:00,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 16:37:00,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 16:37:00,556 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 16:37:00,557 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 16:37:00,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i [2020-12-23 16:37:00,627 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/755bd0763/17b2aadc3910474b9b6f5c727f962603/FLAG1ac065607 [2020-12-23 16:37:01,386 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 16:37:01,387 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i [2020-12-23 16:37:01,408 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/755bd0763/17b2aadc3910474b9b6f5c727f962603/FLAG1ac065607 [2020-12-23 16:37:01,581 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/755bd0763/17b2aadc3910474b9b6f5c727f962603 [2020-12-23 16:37:01,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 16:37:01,589 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 16:37:01,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 16:37:01,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 16:37:01,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 16:37:01,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:37:01" (1/1) ... [2020-12-23 16:37:01,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1071d513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:37:01, skipping insertion in model container [2020-12-23 16:37:01,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:37:01" (1/1) ... [2020-12-23 16:37:01,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 16:37:01,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 16:37:02,153 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_SFH_test7-2.i[33021,33034] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~user~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],StructAccessExpression[IdentifierExpression[~user~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~_ha_hashv~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_j~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_i~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_k~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[60],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[48],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[56],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem35,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem35,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem36,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[#t~mem36,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem37,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[12],StructAccessExpression[IdentifierExpression[#t~mem37,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem38,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[28],StructAccessExpression[IdentifierExpression[#t~mem38,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem39,],base],StructAccessExpression[IdentifierExpression[#t~mem39,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem41,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[48],StructAccessExpression[IdentifierExpression[#t~mem41,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~users~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem54,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[#t~mem54,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem55,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem55,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~_ha_bkt~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[40],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem67,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem67,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_ha_head~0,],base],StructAccessExpression[IdentifierExpression[~_ha_head~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~_he_new_buckets~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem79,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[#t~mem79,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem89,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[36],StructAccessExpression[IdentifierExpression[#t~mem89,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~_he_bkt_i~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_thh~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_hh_nxt~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_bkt~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_newbkt~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_he_thh~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[~_he_thh~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_he_thh~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[~_he_thh~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem115,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem115,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_he_newbkt~0,],base],StructAccessExpression[IdentifierExpression[~_he_newbkt~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~_he_thh~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem123,],base],StructAccessExpression[IdentifierExpression[#t~mem123,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem124,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[40],StructAccessExpression[IdentifierExpression[#t~mem124,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem134,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[44],StructAccessExpression[IdentifierExpression[#t~mem134,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~_hf_hashv~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_j~1,] left hand side expression in assignment: lhs: VariableLHS[~_hj_i~1,] left hand side expression in assignment: lhs: VariableLHS[~_hj_k~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~_hf_bkt~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~users~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem187,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem187,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem192,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[#t~mem192,],offset],IdentifierExpression[#t~mem194,]]]]] left hand side expression in assignment: lhs: VariableLHS[~users~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem198,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[#t~mem198,],offset],IdentifierExpression[#t~mem200,]]]]] left hand side expression in assignment: lhs: VariableLHS[~_hd_bkt~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_hd_head~0,],base],StructAccessExpression[IdentifierExpression[~_hd_head~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem212,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[#t~mem212,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem215,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem215,],offset]]]] [2020-12-23 16:37:02,277 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_SFH_test7-2.i[44124,44137] left hand side expression in assignment: lhs: VariableLHS[~user~0,] left hand side expression in assignment: lhs: VariableLHS[~user~0,] [2020-12-23 16:37:02,278 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_SFH_test7-2.i[44245,44258] left hand side expression in assignment: lhs: VariableLHS[~user~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~user~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~users~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem233,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem233,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem238,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[#t~mem238,],offset],IdentifierExpression[#t~mem240,]]]]] left hand side expression in assignment: lhs: VariableLHS[~users~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem244,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[#t~mem244,],offset],IdentifierExpression[#t~mem246,]]]]] left hand side expression in assignment: lhs: VariableLHS[~_hd_bkt~1,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_hd_head~1,],base],StructAccessExpression[IdentifierExpression[~_hd_head~1,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem258,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[#t~mem258,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem261,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem261,],offset]]]] [2020-12-23 16:37:02,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:37:02,335 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 16:37:02,396 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_SFH_test7-2.i[33021,33034] left hand side expression in assignment: address: IdentifierExpression[~#i~0,] left hand side expression in assignment: lhs: VariableLHS[~user~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],StructAccessExpression[IdentifierExpression[~user~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~_ha_hashv~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_j~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_i~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_k~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[60],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[48],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[56],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem40,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem40,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem41,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[#t~mem41,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem42,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[12],StructAccessExpression[IdentifierExpression[#t~mem42,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem43,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[28],StructAccessExpression[IdentifierExpression[#t~mem43,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem44,],base],StructAccessExpression[IdentifierExpression[#t~mem44,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem46,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[48],StructAccessExpression[IdentifierExpression[#t~mem46,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~users~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem59,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[#t~mem59,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem60,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem60,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~_ha_bkt~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[40],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem72,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem72,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_ha_head~0,],base],StructAccessExpression[IdentifierExpression[~_ha_head~0,],offset]]] left hand side expression in assignment: address: IdentifierExpression[~#_he_new_buckets~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem86,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[#t~mem86,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem96,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[36],StructAccessExpression[IdentifierExpression[#t~mem96,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~_he_bkt_i~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_thh~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_hh_nxt~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_bkt~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_newbkt~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_he_thh~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[~_he_thh~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_he_thh~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[~_he_thh~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem123,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem123,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_he_newbkt~0,],base],StructAccessExpression[IdentifierExpression[~_he_newbkt~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~_he_thh~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem131,],base],StructAccessExpression[IdentifierExpression[#t~mem131,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem133,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[40],StructAccessExpression[IdentifierExpression[#t~mem133,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem143,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[44],StructAccessExpression[IdentifierExpression[#t~mem143,],offset]]]] left hand side expression in assignment: address: IdentifierExpression[~#i~0,] left hand side expression in assignment: lhs: VariableLHS[~_hf_hashv~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_j~1,] left hand side expression in assignment: lhs: VariableLHS[~_hj_i~1,] left hand side expression in assignment: lhs: VariableLHS[~_hj_k~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~_hf_bkt~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~users~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem198,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem198,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem203,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[#t~mem203,],offset],IdentifierExpression[#t~mem205,]]]]] left hand side expression in assignment: lhs: VariableLHS[~users~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem209,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[#t~mem209,],offset],IdentifierExpression[#t~mem211,]]]]] left hand side expression in assignment: lhs: VariableLHS[~_hd_bkt~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_hd_head~0,],base],StructAccessExpression[IdentifierExpression[~_hd_head~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem223,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[#t~mem223,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem226,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem226,],offset]]]] [2020-12-23 16:37:02,493 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_SFH_test7-2.i[44124,44137] left hand side expression in assignment: lhs: VariableLHS[~user~0,] left hand side expression in assignment: lhs: VariableLHS[~user~0,] [2020-12-23 16:37:02,495 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_SFH_test7-2.i[44245,44258] left hand side expression in assignment: lhs: VariableLHS[~user~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~user~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~users~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem244,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem244,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem249,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[#t~mem249,],offset],IdentifierExpression[#t~mem251,]]]]] left hand side expression in assignment: lhs: VariableLHS[~users~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem255,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[#t~mem255,],offset],IdentifierExpression[#t~mem257,]]]]] left hand side expression in assignment: lhs: VariableLHS[~_hd_bkt~1,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_hd_head~1,],base],StructAccessExpression[IdentifierExpression[~_hd_head~1,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem269,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[#t~mem269,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem272,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem272,],offset]]]] [2020-12-23 16:37:02,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:37:02,661 INFO L208 MainTranslator]: Completed translation [2020-12-23 16:37:02,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:37:02 WrapperNode [2020-12-23 16:37:02,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 16:37:02,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 16:37:02,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 16:37:02,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 16:37:02,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:37:02" (1/1) ... [2020-12-23 16:37:02,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:37:02" (1/1) ... [2020-12-23 16:37:02,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 16:37:02,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 16:37:02,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 16:37:02,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 16:37:02,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:37:02" (1/1) ... [2020-12-23 16:37:02,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:37:02" (1/1) ... [2020-12-23 16:37:02,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:37:02" (1/1) ... [2020-12-23 16:37:02,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:37:02" (1/1) ... [2020-12-23 16:37:02,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:37:02" (1/1) ... [2020-12-23 16:37:02,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:37:02" (1/1) ... [2020-12-23 16:37:02,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:37:02" (1/1) ... [2020-12-23 16:37:03,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 16:37:03,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 16:37:03,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 16:37:03,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 16:37:03,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:37:02" (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 16:37:03,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 16:37:03,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 16:37:03,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 16:37:03,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-23 16:37:03,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 16:37:03,122 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-12-23 16:37:03,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-23 16:37:03,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 16:37:03,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 16:37:03,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 16:37:03,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 16:37:05,035 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 16:37:05,035 INFO L299 CfgBuilder]: Removed 82 assume(true) statements. [2020-12-23 16:37:05,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:37:05 BoogieIcfgContainer [2020-12-23 16:37:05,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 16:37:05,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 16:37:05,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 16:37:05,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 16:37:05,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 04:37:01" (1/3) ... [2020-12-23 16:37:05,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2904c991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:37:05, skipping insertion in model container [2020-12-23 16:37:05,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:37:02" (2/3) ... [2020-12-23 16:37:05,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2904c991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:37:05, skipping insertion in model container [2020-12-23 16:37:05,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:37:05" (3/3) ... [2020-12-23 16:37:05,046 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test7-2.i [2020-12-23 16:37:05,053 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 16:37:05,058 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 16:37:05,078 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-23 16:37:05,107 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 16:37:05,107 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 16:37:05,107 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 16:37:05,107 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 16:37:05,108 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 16:37:05,108 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 16:37:05,108 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 16:37:05,108 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 16:37:05,128 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states. [2020-12-23 16:37:05,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 16:37:05,134 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:37:05,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:37:05,135 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:37:05,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:37:05,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1366407864, now seen corresponding path program 1 times [2020-12-23 16:37:05,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:37:05,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246527248] [2020-12-23 16:37:05,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:37:05,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:37:05,315 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 16:37:05,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246527248] [2020-12-23 16:37:05,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:37:05,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:37:05,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836697223] [2020-12-23 16:37:05,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 16:37:05,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:37:05,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 16:37:05,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 16:37:05,340 INFO L87 Difference]: Start difference. First operand 211 states. Second operand 2 states. [2020-12-23 16:37:05,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:37:05,384 INFO L93 Difference]: Finished difference Result 419 states and 707 transitions. [2020-12-23 16:37:05,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 16:37:05,386 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-23 16:37:05,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:37:05,404 INFO L225 Difference]: With dead ends: 419 [2020-12-23 16:37:05,404 INFO L226 Difference]: Without dead ends: 177 [2020-12-23 16:37:05,409 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 16:37:05,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-12-23 16:37:05,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2020-12-23 16:37:05,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-12-23 16:37:05,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 232 transitions. [2020-12-23 16:37:05,490 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 232 transitions. Word has length 8 [2020-12-23 16:37:05,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:37:05,491 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 232 transitions. [2020-12-23 16:37:05,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 16:37:05,492 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 232 transitions. [2020-12-23 16:37:05,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 16:37:05,493 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:37:05,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:37:05,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 16:37:05,494 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:37:05,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:37:05,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1136278917, now seen corresponding path program 1 times [2020-12-23 16:37:05,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:37:05,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705113232] [2020-12-23 16:37:05,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:37:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:37:05,630 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 16:37:05,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705113232] [2020-12-23 16:37:05,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:37:05,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:37:05,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339714352] [2020-12-23 16:37:05,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:37:05,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:37:05,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:37:05,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:37:05,634 INFO L87 Difference]: Start difference. First operand 177 states and 232 transitions. Second operand 4 states. [2020-12-23 16:37:06,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:37:06,077 INFO L93 Difference]: Finished difference Result 382 states and 501 transitions. [2020-12-23 16:37:06,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:37:06,078 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-23 16:37:06,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:37:06,081 INFO L225 Difference]: With dead ends: 382 [2020-12-23 16:37:06,081 INFO L226 Difference]: Without dead ends: 295 [2020-12-23 16:37:06,082 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 16:37:06,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-12-23 16:37:06,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 179. [2020-12-23 16:37:06,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-12-23 16:37:06,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 234 transitions. [2020-12-23 16:37:06,097 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 234 transitions. Word has length 10 [2020-12-23 16:37:06,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:37:06,097 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 234 transitions. [2020-12-23 16:37:06,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:37:06,097 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 234 transitions. [2020-12-23 16:37:06,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 16:37:06,100 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:37:06,100 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:37:06,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 16:37:06,100 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:37:06,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:37:06,101 INFO L82 PathProgramCache]: Analyzing trace with hash -2095912151, now seen corresponding path program 1 times [2020-12-23 16:37:06,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:37:06,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539258980] [2020-12-23 16:37:06,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:37:06,128 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:37:06,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [691336698] [2020-12-23 16:37:06,129 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 16:37:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:37:06,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 16:37:06,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:37:06,501 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 16:37:06,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539258980] [2020-12-23 16:37:06,504 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:37:06,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691336698] [2020-12-23 16:37:06,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:37:06,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:37:06,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782316130] [2020-12-23 16:37:06,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:37:06,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:37:06,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:37:06,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:37:06,514 INFO L87 Difference]: Start difference. First operand 179 states and 234 transitions. Second operand 3 states. [2020-12-23 16:37:06,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:37:06,598 INFO L93 Difference]: Finished difference Result 375 states and 495 transitions. [2020-12-23 16:37:06,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:37:06,598 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-23 16:37:06,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:37:06,602 INFO L225 Difference]: With dead ends: 375 [2020-12-23 16:37:06,603 INFO L226 Difference]: Without dead ends: 200 [2020-12-23 16:37:06,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:37:06,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-12-23 16:37:06,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199. [2020-12-23 16:37:06,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-12-23 16:37:06,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 254 transitions. [2020-12-23 16:37:06,638 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 254 transitions. Word has length 62 [2020-12-23 16:37:06,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:37:06,638 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 254 transitions. [2020-12-23 16:37:06,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:37:06,639 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 254 transitions. [2020-12-23 16:37:06,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 16:37:06,642 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:37:06,643 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:37:06,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 16:37:06,860 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:37:06,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:37:06,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1305568807, now seen corresponding path program 1 times [2020-12-23 16:37:06,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:37:06,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564222558] [2020-12-23 16:37:06,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:37:06,903 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:37:06,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [55488339] [2020-12-23 16:37:06,903 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 16:37:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:37:07,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 16:37:07,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:37:07,214 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 16:37:07,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564222558] [2020-12-23 16:37:07,215 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:37:07,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55488339] [2020-12-23 16:37:07,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:37:07,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:37:07,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135098979] [2020-12-23 16:37:07,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:37:07,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:37:07,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:37:07,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:37:07,243 INFO L87 Difference]: Start difference. First operand 199 states and 254 transitions. Second operand 4 states. [2020-12-23 16:37:07,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:37:07,330 INFO L93 Difference]: Finished difference Result 386 states and 496 transitions. [2020-12-23 16:37:07,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:37:07,330 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-23 16:37:07,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:37:07,332 INFO L225 Difference]: With dead ends: 386 [2020-12-23 16:37:07,332 INFO L226 Difference]: Without dead ends: 191 [2020-12-23 16:37:07,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:37:07,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-12-23 16:37:07,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 185. [2020-12-23 16:37:07,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-12-23 16:37:07,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 233 transitions. [2020-12-23 16:37:07,339 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 233 transitions. Word has length 62 [2020-12-23 16:37:07,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:37:07,340 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 233 transitions. [2020-12-23 16:37:07,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:37:07,340 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 233 transitions. [2020-12-23 16:37:07,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 16:37:07,341 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:37:07,342 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:37:07,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:37:07,557 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:37:07,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:37:07,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1777715509, now seen corresponding path program 1 times [2020-12-23 16:37:07,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:37:07,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439403928] [2020-12-23 16:37:07,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:37:07,578 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:37:07,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1552122778] [2020-12-23 16:37:07,579 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 16:37:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:37:07,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 16:37:07,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:37:07,868 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 16:37:07,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439403928] [2020-12-23 16:37:07,869 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:37:07,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552122778] [2020-12-23 16:37:07,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:37:07,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:37:07,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451583920] [2020-12-23 16:37:07,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:37:07,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:37:07,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:37:07,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:37:07,871 INFO L87 Difference]: Start difference. First operand 185 states and 233 transitions. Second operand 3 states. [2020-12-23 16:37:07,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:37:07,984 INFO L93 Difference]: Finished difference Result 479 states and 602 transitions. [2020-12-23 16:37:07,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:37:07,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-23 16:37:07,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:37:07,987 INFO L225 Difference]: With dead ends: 479 [2020-12-23 16:37:07,987 INFO L226 Difference]: Without dead ends: 298 [2020-12-23 16:37:07,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:37:07,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-23 16:37:07,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 291. [2020-12-23 16:37:07,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-12-23 16:37:07,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 366 transitions. [2020-12-23 16:37:07,997 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 366 transitions. Word has length 62 [2020-12-23 16:37:07,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:37:07,997 INFO L481 AbstractCegarLoop]: Abstraction has 291 states and 366 transitions. [2020-12-23 16:37:07,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:37:07,998 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 366 transitions. [2020-12-23 16:37:07,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 16:37:07,999 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:37:07,999 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:37:08,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:37:08,206 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:37:08,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:37:08,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1300403396, now seen corresponding path program 1 times [2020-12-23 16:37:08,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:37:08,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919235538] [2020-12-23 16:37:08,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:37:08,227 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:37:08,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [13079738] [2020-12-23 16:37:08,227 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 16:37:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:37:08,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 16:37:08,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:37:08,589 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 16:37:08,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919235538] [2020-12-23 16:37:08,590 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:37:08,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13079738] [2020-12-23 16:37:08,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:37:08,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:37:08,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025077274] [2020-12-23 16:37:08,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:37:08,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:37:08,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:37:08,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:37:08,592 INFO L87 Difference]: Start difference. First operand 291 states and 366 transitions. Second operand 3 states. [2020-12-23 16:37:08,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:37:08,627 INFO L93 Difference]: Finished difference Result 536 states and 683 transitions. [2020-12-23 16:37:08,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:37:08,628 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-23 16:37:08,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:37:08,630 INFO L225 Difference]: With dead ends: 536 [2020-12-23 16:37:08,630 INFO L226 Difference]: Without dead ends: 293 [2020-12-23 16:37:08,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:37:08,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-12-23 16:37:08,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2020-12-23 16:37:08,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-12-23 16:37:08,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 368 transitions. [2020-12-23 16:37:08,649 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 368 transitions. Word has length 69 [2020-12-23 16:37:08,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:37:08,649 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 368 transitions. [2020-12-23 16:37:08,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:37:08,650 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 368 transitions. [2020-12-23 16:37:08,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-23 16:37:08,651 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:37:08,651 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 16:37:08,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:37:08,867 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:37:08,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:37:08,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1522577957, now seen corresponding path program 1 times [2020-12-23 16:37:08,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:37:08,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557549708] [2020-12-23 16:37:08,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:37:08,903 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:37:08,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1079284580] [2020-12-23 16:37:08,908 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 16:37:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:37:09,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 16:37:09,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:37:09,279 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 16:37:09,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557549708] [2020-12-23 16:37:09,280 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:37:09,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079284580] [2020-12-23 16:37:09,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 16:37:09,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-23 16:37:09,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713162416] [2020-12-23 16:37:09,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:37:09,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:37:09,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:37:09,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:37:09,282 INFO L87 Difference]: Start difference. First operand 293 states and 368 transitions. Second operand 4 states. [2020-12-23 16:37:09,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:37:09,323 INFO L93 Difference]: Finished difference Result 540 states and 687 transitions. [2020-12-23 16:37:09,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:37:09,324 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-12-23 16:37:09,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:37:09,326 INFO L225 Difference]: With dead ends: 540 [2020-12-23 16:37:09,326 INFO L226 Difference]: Without dead ends: 295 [2020-12-23 16:37:09,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:37:09,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-12-23 16:37:09,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2020-12-23 16:37:09,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-12-23 16:37:09,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 370 transitions. [2020-12-23 16:37:09,340 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 370 transitions. Word has length 71 [2020-12-23 16:37:09,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:37:09,343 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 370 transitions. [2020-12-23 16:37:09,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:37:09,343 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 370 transitions. [2020-12-23 16:37:09,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 16:37:09,345 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:37:09,345 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:37:09,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 16:37:09,560 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:37:09,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:37:09,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1094780836, now seen corresponding path program 2 times [2020-12-23 16:37:09,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:37:09,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883893204] [2020-12-23 16:37:09,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:37:09,580 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:37:09,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [188107527] [2020-12-23 16:37:09,580 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 16:37:09,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 16:37:09,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:37:09,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 16:37:09,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:37:09,811 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 16:37:09,812 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:37:09,814 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:37:09,815 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:37:09,815 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-12-23 16:37:09,830 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 16:37:09,832 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:37:09,833 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:37:09,834 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 16:37:09,834 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-23 16:37:09,843 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 16:37:09,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883893204] [2020-12-23 16:37:09,844 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:37:09,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188107527] [2020-12-23 16:37:09,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:37:09,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:37:09,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926352471] [2020-12-23 16:37:09,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:37:09,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:37:09,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:37:09,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:37:09,846 INFO L87 Difference]: Start difference. First operand 295 states and 370 transitions. Second operand 4 states. [2020-12-23 16:37:10,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:37:10,269 INFO L93 Difference]: Finished difference Result 383 states and 487 transitions. [2020-12-23 16:37:10,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:37:10,270 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-12-23 16:37:10,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:37:10,272 INFO L225 Difference]: With dead ends: 383 [2020-12-23 16:37:10,273 INFO L226 Difference]: Without dead ends: 379 [2020-12-23 16:37:10,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:37:10,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-12-23 16:37:10,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 297. [2020-12-23 16:37:10,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-12-23 16:37:10,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 372 transitions. [2020-12-23 16:37:10,285 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 372 transitions. Word has length 73 [2020-12-23 16:37:10,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:37:10,285 INFO L481 AbstractCegarLoop]: Abstraction has 297 states and 372 transitions. [2020-12-23 16:37:10,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:37:10,285 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 372 transitions. [2020-12-23 16:37:10,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-23 16:37:10,286 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:37:10,287 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 16:37:10,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:37:10,500 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:37:10,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:37:10,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1878713718, now seen corresponding path program 1 times [2020-12-23 16:37:10,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:37:10,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401917849] [2020-12-23 16:37:10,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:37:10,535 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:37:10,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [391747980] [2020-12-23 16:37:10,537 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 16:37:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:37:10,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 16:37:10,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:37:10,920 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 16:37:10,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401917849] [2020-12-23 16:37:10,921 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:37:10,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391747980] [2020-12-23 16:37:10,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:37:10,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:37:10,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353050048] [2020-12-23 16:37:10,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:37:10,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:37:10,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:37:10,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:37:10,926 INFO L87 Difference]: Start difference. First operand 297 states and 372 transitions. Second operand 3 states. [2020-12-23 16:37:11,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:37:11,011 INFO L93 Difference]: Finished difference Result 487 states and 631 transitions. [2020-12-23 16:37:11,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:37:11,012 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-23 16:37:11,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:37:11,015 INFO L225 Difference]: With dead ends: 487 [2020-12-23 16:37:11,015 INFO L226 Difference]: Without dead ends: 339 [2020-12-23 16:37:11,016 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 16:37:11,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-12-23 16:37:11,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 337. [2020-12-23 16:37:11,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-12-23 16:37:11,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 412 transitions. [2020-12-23 16:37:11,026 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 412 transitions. Word has length 107 [2020-12-23 16:37:11,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:37:11,027 INFO L481 AbstractCegarLoop]: Abstraction has 337 states and 412 transitions. [2020-12-23 16:37:11,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:37:11,027 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 412 transitions. [2020-12-23 16:37:11,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-23 16:37:11,029 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:37:11,029 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 16:37:11,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:37:11,243 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:37:11,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:37:11,244 INFO L82 PathProgramCache]: Analyzing trace with hash 2096048526, now seen corresponding path program 1 times [2020-12-23 16:37:11,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:37:11,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126427101] [2020-12-23 16:37:11,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:37:11,262 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:37:11,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [782817812] [2020-12-23 16:37:11,262 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 16:37:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:37:11,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 16:37:11,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:37:11,609 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 16:37:11,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126427101] [2020-12-23 16:37:11,610 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:37:11,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782817812] [2020-12-23 16:37:11,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:37:11,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:37:11,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840692076] [2020-12-23 16:37:11,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:37:11,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:37:11,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:37:11,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:37:11,613 INFO L87 Difference]: Start difference. First operand 337 states and 412 transitions. Second operand 4 states. [2020-12-23 16:37:11,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:37:11,712 INFO L93 Difference]: Finished difference Result 502 states and 626 transitions. [2020-12-23 16:37:11,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:37:11,712 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-12-23 16:37:11,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:37:11,714 INFO L225 Difference]: With dead ends: 502 [2020-12-23 16:37:11,714 INFO L226 Difference]: Without dead ends: 314 [2020-12-23 16:37:11,715 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 16:37:11,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-12-23 16:37:11,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 309. [2020-12-23 16:37:11,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-12-23 16:37:11,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 370 transitions. [2020-12-23 16:37:11,725 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 370 transitions. Word has length 107 [2020-12-23 16:37:11,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:37:11,726 INFO L481 AbstractCegarLoop]: Abstraction has 309 states and 370 transitions. [2020-12-23 16:37:11,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:37:11,726 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 370 transitions. [2020-12-23 16:37:11,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-23 16:37:11,727 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:37:11,727 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 16:37:11,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 16:37:11,942 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:37:11,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:37:11,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1213199680, now seen corresponding path program 1 times [2020-12-23 16:37:11,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:37:11,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443198662] [2020-12-23 16:37:11,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:37:11,962 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:37:11,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [655069742] [2020-12-23 16:37:11,963 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 16:37:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:37:12,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 16:37:12,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:37:12,358 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 16:37:12,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443198662] [2020-12-23 16:37:12,359 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:37:12,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655069742] [2020-12-23 16:37:12,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 16:37:12,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 16:37:12,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888617322] [2020-12-23 16:37:12,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 16:37:12,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:37:12,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 16:37:12,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:37:12,361 INFO L87 Difference]: Start difference. First operand 309 states and 370 transitions. Second operand 5 states. [2020-12-23 16:37:12,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:37:12,405 INFO L93 Difference]: Finished difference Result 572 states and 691 transitions. [2020-12-23 16:37:12,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 16:37:12,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-12-23 16:37:12,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:37:12,407 INFO L225 Difference]: With dead ends: 572 [2020-12-23 16:37:12,407 INFO L226 Difference]: Without dead ends: 311 [2020-12-23 16:37:12,408 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 16:37:12,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-12-23 16:37:12,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2020-12-23 16:37:12,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-12-23 16:37:12,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 372 transitions. [2020-12-23 16:37:12,419 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 372 transitions. Word has length 107 [2020-12-23 16:37:12,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:37:12,419 INFO L481 AbstractCegarLoop]: Abstraction has 311 states and 372 transitions. [2020-12-23 16:37:12,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 16:37:12,419 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 372 transitions. [2020-12-23 16:37:12,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-23 16:37:12,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:37:12,420 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 16:37:12,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:37:12,634 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:37:12,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:37:12,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1565711905, now seen corresponding path program 2 times [2020-12-23 16:37:12,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:37:12,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746417867] [2020-12-23 16:37:12,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:37:12,652 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:37:12,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1953894963] [2020-12-23 16:37:12,653 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 16:37:12,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:37:12,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:37:12,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 16:37:12,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:37:13,119 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 16:37:13,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746417867] [2020-12-23 16:37:13,120 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:37:13,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953894963] [2020-12-23 16:37:13,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 16:37:13,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 16:37:13,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288342296] [2020-12-23 16:37:13,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 16:37:13,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:37:13,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 16:37:13,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:37:13,122 INFO L87 Difference]: Start difference. First operand 311 states and 372 transitions. Second operand 6 states. [2020-12-23 16:37:13,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:37:13,177 INFO L93 Difference]: Finished difference Result 576 states and 695 transitions. [2020-12-23 16:37:13,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 16:37:13,178 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2020-12-23 16:37:13,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:37:13,180 INFO L225 Difference]: With dead ends: 576 [2020-12-23 16:37:13,180 INFO L226 Difference]: Without dead ends: 313 [2020-12-23 16:37:13,181 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 16:37:13,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-12-23 16:37:13,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2020-12-23 16:37:13,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-12-23 16:37:13,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 374 transitions. [2020-12-23 16:37:13,193 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 374 transitions. Word has length 109 [2020-12-23 16:37:13,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:37:13,193 INFO L481 AbstractCegarLoop]: Abstraction has 313 states and 374 transitions. [2020-12-23 16:37:13,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 16:37:13,194 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 374 transitions. [2020-12-23 16:37:13,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-23 16:37:13,195 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:37:13,195 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 16:37:13,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:37:13,409 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:37:13,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:37:13,411 INFO L82 PathProgramCache]: Analyzing trace with hash -383989728, now seen corresponding path program 3 times [2020-12-23 16:37:13,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:37:13,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130276890] [2020-12-23 16:37:13,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:37:13,433 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:37:13,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1900432470] [2020-12-23 16:37:13,434 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 16:37:13,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 16:37:13,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:37:13,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 16:37:13,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:37:13,988 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 16:37:13,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130276890] [2020-12-23 16:37:13,988 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:37:13,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900432470] [2020-12-23 16:37:13,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:37:13,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:37:13,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617392266] [2020-12-23 16:37:13,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:37:13,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:37:13,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:37:13,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:37:13,990 INFO L87 Difference]: Start difference. First operand 313 states and 374 transitions. Second operand 4 states. [2020-12-23 16:37:14,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:37:14,439 INFO L93 Difference]: Finished difference Result 644 states and 770 transitions. [2020-12-23 16:37:14,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:37:14,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-12-23 16:37:14,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:37:14,442 INFO L225 Difference]: With dead ends: 644 [2020-12-23 16:37:14,442 INFO L226 Difference]: Without dead ends: 379 [2020-12-23 16:37:14,443 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 16:37:14,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-12-23 16:37:14,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 372. [2020-12-23 16:37:14,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-12-23 16:37:14,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 442 transitions. [2020-12-23 16:37:14,457 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 442 transitions. Word has length 111 [2020-12-23 16:37:14,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:37:14,457 INFO L481 AbstractCegarLoop]: Abstraction has 372 states and 442 transitions. [2020-12-23 16:37:14,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:37:14,457 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 442 transitions. [2020-12-23 16:37:14,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-23 16:37:14,459 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:37:14,459 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 16:37:14,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 16:37:14,674 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:37:14,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:37:14,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1107954682, now seen corresponding path program 1 times [2020-12-23 16:37:14,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:37:14,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692944561] [2020-12-23 16:37:14,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:37:14,690 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:37:14,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1877870542] [2020-12-23 16:37:14,691 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 16:37:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:37:14,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 16:37:14,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:37:15,163 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 16:37:15,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692944561] [2020-12-23 16:37:15,163 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:37:15,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877870542] [2020-12-23 16:37:15,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 16:37:15,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 16:37:15,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488950663] [2020-12-23 16:37:15,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 16:37:15,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:37:15,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 16:37:15,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:37:15,172 INFO L87 Difference]: Start difference. First operand 372 states and 442 transitions. Second operand 7 states. [2020-12-23 16:37:15,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:37:15,230 INFO L93 Difference]: Finished difference Result 691 states and 827 transitions. [2020-12-23 16:37:15,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 16:37:15,230 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-12-23 16:37:15,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:37:15,232 INFO L225 Difference]: With dead ends: 691 [2020-12-23 16:37:15,233 INFO L226 Difference]: Without dead ends: 374 [2020-12-23 16:37:15,233 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 16:37:15,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2020-12-23 16:37:15,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2020-12-23 16:37:15,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-12-23 16:37:15,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 444 transitions. [2020-12-23 16:37:15,247 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 444 transitions. Word has length 118 [2020-12-23 16:37:15,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:37:15,248 INFO L481 AbstractCegarLoop]: Abstraction has 374 states and 444 transitions. [2020-12-23 16:37:15,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 16:37:15,248 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 444 transitions. [2020-12-23 16:37:15,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-12-23 16:37:15,249 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:37:15,249 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 16:37:15,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 16:37:15,463 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:37:15,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:37:15,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1744267321, now seen corresponding path program 2 times [2020-12-23 16:37:15,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:37:15,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798919265] [2020-12-23 16:37:15,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:37:15,480 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:37:15,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2008920730] [2020-12-23 16:37:15,480 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 16:37:15,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:37:15,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:37:15,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 16:37:15,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:37:16,104 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 16:37:16,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798919265] [2020-12-23 16:37:16,105 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:37:16,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008920730] [2020-12-23 16:37:16,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 16:37:16,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 16:37:16,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948251736] [2020-12-23 16:37:16,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 16:37:16,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:37:16,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 16:37:16,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-23 16:37:16,106 INFO L87 Difference]: Start difference. First operand 374 states and 444 transitions. Second operand 8 states. [2020-12-23 16:37:16,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:37:16,171 INFO L93 Difference]: Finished difference Result 694 states and 830 transitions. [2020-12-23 16:37:16,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 16:37:16,172 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 120 [2020-12-23 16:37:16,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:37:16,174 INFO L225 Difference]: With dead ends: 694 [2020-12-23 16:37:16,174 INFO L226 Difference]: Without dead ends: 376 [2020-12-23 16:37:16,175 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 16:37:16,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-12-23 16:37:16,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2020-12-23 16:37:16,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-12-23 16:37:16,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 446 transitions. [2020-12-23 16:37:16,190 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 446 transitions. Word has length 120 [2020-12-23 16:37:16,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:37:16,190 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 446 transitions. [2020-12-23 16:37:16,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 16:37:16,190 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 446 transitions. [2020-12-23 16:37:16,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-23 16:37:16,192 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:37:16,192 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 16:37:16,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-23 16:37:16,398 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:37:16,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:37:16,399 INFO L82 PathProgramCache]: Analyzing trace with hash -994826982, now seen corresponding path program 3 times [2020-12-23 16:37:16,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:37:16,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061818939] [2020-12-23 16:37:16,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:37:16,443 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:37:16,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [843164250] [2020-12-23 16:37:16,443 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