/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 16:29:11,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 16:29:11,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 16:29:11,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-23 16:29:11,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 16:29:11,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 16:29:11,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 16:29:11,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 16:29:11,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 16:29:11,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 16:29:11,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 16:29:11,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 16:29:11,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 16:29:11,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 16:29:11,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 16:29:11,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 16:29:11,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 16:29:11,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 16:29:11,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 16:29:11,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 16:29:11,723 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 16:29:11,788 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 16:29:11,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 16:29:11,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 16:29:11,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 16:29:11,795 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 16:29:11,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 16:29:11,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 16:29:11,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 16:29:11,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 16:29:11,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 16:29:11,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 16:29:11,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 16:29:11,799 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 16:29:11,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 16:29:11,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 16:29:11,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 16:29:11,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 16:29:11,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 16:29:11,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 16:29:11,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 16:29:11,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 16:29:11,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 16:29:11,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 16:29:11,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 16:29:11,803 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 16:29:11,804 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 16:29:12,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 16:29:12,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 16:29:12,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 16:29:12,318 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 16:29:12,319 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 16:29:12,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-1.i [2020-12-23 16:29:12,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/68bd5b3d2/b36463cacc7e485ebd81e52343236223/FLAG1f7403a29 [2020-12-23 16:29:13,124 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 16:29:13,125 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-1.i [2020-12-23 16:29:13,152 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/68bd5b3d2/b36463cacc7e485ebd81e52343236223/FLAG1f7403a29 [2020-12-23 16:29:13,337 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/68bd5b3d2/b36463cacc7e485ebd81e52343236223 [2020-12-23 16:29:13,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 16:29:13,343 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 16:29:13,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 16:29:13,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 16:29:13,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 16:29:13,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:29:13" (1/1) ... [2020-12-23 16:29:13,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7635eaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:29:13, skipping insertion in model container [2020-12-23 16:29:13,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:29:13" (1/1) ... [2020-12-23 16:29:13,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 16:29:13,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 16:29:13,950 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-1.i[33021,33034] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~user~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],StructAccessExpression[IdentifierExpression[~user~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~_ha_hashv~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_j~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_i~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_k~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[60],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[48],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[56],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem35,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem35,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem36,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[#t~mem36,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem37,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[12],StructAccessExpression[IdentifierExpression[#t~mem37,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem38,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[28],StructAccessExpression[IdentifierExpression[#t~mem38,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem39,],base],StructAccessExpression[IdentifierExpression[#t~mem39,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem41,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[48],StructAccessExpression[IdentifierExpression[#t~mem41,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~users~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem54,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[#t~mem54,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem55,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem55,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~_ha_bkt~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[40],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem67,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem67,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_ha_head~0,],base],StructAccessExpression[IdentifierExpression[~_ha_head~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~_he_new_buckets~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem79,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[#t~mem79,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem89,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[36],StructAccessExpression[IdentifierExpression[#t~mem89,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~_he_bkt_i~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_thh~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_hh_nxt~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_bkt~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_newbkt~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_he_thh~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[~_he_thh~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_he_thh~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[~_he_thh~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem115,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem115,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_he_newbkt~0,],base],StructAccessExpression[IdentifierExpression[~_he_newbkt~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~_he_thh~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem123,],base],StructAccessExpression[IdentifierExpression[#t~mem123,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem124,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[40],StructAccessExpression[IdentifierExpression[#t~mem124,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem134,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[44],StructAccessExpression[IdentifierExpression[#t~mem134,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~_hf_hashv~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_j~1,] left hand side expression in assignment: lhs: VariableLHS[~_hj_i~1,] left hand side expression in assignment: lhs: VariableLHS[~_hj_k~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~_hf_bkt~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~users~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem187,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem187,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem192,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[#t~mem192,],offset],IdentifierExpression[#t~mem194,]]]]] left hand side expression in assignment: lhs: VariableLHS[~users~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem198,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[#t~mem198,],offset],IdentifierExpression[#t~mem200,]]]]] left hand side expression in assignment: lhs: VariableLHS[~_hd_bkt~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_hd_head~0,],base],StructAccessExpression[IdentifierExpression[~_hd_head~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem212,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[#t~mem212,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem215,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem215,],offset]]]] [2020-12-23 16:29:14,170 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-1.i[44124,44137] left hand side expression in assignment: lhs: VariableLHS[~user~0,] left hand side expression in assignment: lhs: VariableLHS[~user~0,] [2020-12-23 16:29:14,171 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-1.i[44245,44258] [2020-12-23 16:29:14,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:29:14,195 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 16:29:14,234 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-1.i[33021,33034] left hand side expression in assignment: address: IdentifierExpression[~#i~0,] left hand side expression in assignment: lhs: VariableLHS[~user~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],StructAccessExpression[IdentifierExpression[~user~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~_ha_hashv~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_j~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_i~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_k~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[60],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[48],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[56],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem40,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem40,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem41,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[#t~mem41,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem42,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[12],StructAccessExpression[IdentifierExpression[#t~mem42,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem43,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[28],StructAccessExpression[IdentifierExpression[#t~mem43,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem44,],base],StructAccessExpression[IdentifierExpression[#t~mem44,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem46,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[48],StructAccessExpression[IdentifierExpression[#t~mem46,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~users~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem59,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[#t~mem59,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem60,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem60,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~_ha_bkt~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[40],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem72,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem72,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_ha_head~0,],base],StructAccessExpression[IdentifierExpression[~_ha_head~0,],offset]]] left hand side expression in assignment: address: IdentifierExpression[~#_he_new_buckets~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem86,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[#t~mem86,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem96,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[36],StructAccessExpression[IdentifierExpression[#t~mem96,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~_he_bkt_i~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_thh~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_hh_nxt~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_bkt~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_newbkt~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_he_thh~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[~_he_thh~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_he_thh~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[~_he_thh~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem123,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem123,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_he_newbkt~0,],base],StructAccessExpression[IdentifierExpression[~_he_newbkt~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~_he_thh~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem131,],base],StructAccessExpression[IdentifierExpression[#t~mem131,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem133,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[40],StructAccessExpression[IdentifierExpression[#t~mem133,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem143,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[44],StructAccessExpression[IdentifierExpression[#t~mem143,],offset]]]] left hand side expression in assignment: address: IdentifierExpression[~#i~0,] left hand side expression in assignment: lhs: VariableLHS[~_hf_hashv~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_j~1,] left hand side expression in assignment: lhs: VariableLHS[~_hj_i~1,] left hand side expression in assignment: lhs: VariableLHS[~_hj_k~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~_hf_bkt~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~users~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem198,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem198,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem203,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[#t~mem203,],offset],IdentifierExpression[#t~mem205,]]]]] left hand side expression in assignment: lhs: VariableLHS[~users~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem209,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[#t~mem209,],offset],IdentifierExpression[#t~mem211,]]]]] left hand side expression in assignment: lhs: VariableLHS[~_hd_bkt~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_hd_head~0,],base],StructAccessExpression[IdentifierExpression[~_hd_head~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem223,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[#t~mem223,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem226,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem226,],offset]]]] [2020-12-23 16:29:14,376 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-1.i[44124,44137] left hand side expression in assignment: lhs: VariableLHS[~user~0,] left hand side expression in assignment: lhs: VariableLHS[~user~0,] [2020-12-23 16:29:14,377 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-1.i[44245,44258] [2020-12-23 16:29:14,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:29:14,488 INFO L208 MainTranslator]: Completed translation [2020-12-23 16:29:14,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:29:14 WrapperNode [2020-12-23 16:29:14,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 16:29:14,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 16:29:14,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 16:29:14,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 16:29:14,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:29:14" (1/1) ... [2020-12-23 16:29:14,542 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:29:14" (1/1) ... [2020-12-23 16:29:14,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 16:29:14,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 16:29:14,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 16:29:14,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 16:29:14,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:29:14" (1/1) ... [2020-12-23 16:29:14,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:29:14" (1/1) ... [2020-12-23 16:29:14,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:29:14" (1/1) ... [2020-12-23 16:29:14,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:29:14" (1/1) ... [2020-12-23 16:29:14,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:29:14" (1/1) ... [2020-12-23 16:29:14,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:29:14" (1/1) ... [2020-12-23 16:29:14,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:29:14" (1/1) ... [2020-12-23 16:29:14,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 16:29:14,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 16:29:14,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 16:29:14,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 16:29:14,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:29:14" (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 16:29:14,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 16:29:14,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 16:29:14,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 16:29:14,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-23 16:29:14,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 16:29:14,987 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-12-23 16:29:14,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-23 16:29:14,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 16:29:14,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 16:29:14,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 16:29:14,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 16:29:17,237 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 16:29:17,238 INFO L299 CfgBuilder]: Removed 73 assume(true) statements. [2020-12-23 16:29:17,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:29:17 BoogieIcfgContainer [2020-12-23 16:29:17,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 16:29:17,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 16:29:17,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 16:29:17,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 16:29:17,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 04:29:13" (1/3) ... [2020-12-23 16:29:17,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae603c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:29:17, skipping insertion in model container [2020-12-23 16:29:17,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:29:14" (2/3) ... [2020-12-23 16:29:17,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae603c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:29:17, skipping insertion in model container [2020-12-23 16:29:17,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:29:17" (3/3) ... [2020-12-23 16:29:17,251 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test7-1.i [2020-12-23 16:29:17,258 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 16:29:17,264 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 16:29:17,287 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-23 16:29:17,319 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 16:29:17,319 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 16:29:17,319 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 16:29:17,320 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 16:29:17,320 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 16:29:17,320 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 16:29:17,320 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 16:29:17,320 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 16:29:17,343 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-12-23 16:29:17,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 16:29:17,350 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:29:17,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:29:17,351 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:29:17,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:29:17,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1366407864, now seen corresponding path program 1 times [2020-12-23 16:29:17,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:29:17,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568649311] [2020-12-23 16:29:17,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:29:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:29:17,587 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 16:29:17,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568649311] [2020-12-23 16:29:17,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:29:17,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:29:17,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631589084] [2020-12-23 16:29:17,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 16:29:17,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:29:17,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 16:29:17,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 16:29:17,632 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 2 states. [2020-12-23 16:29:17,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:29:17,712 INFO L93 Difference]: Finished difference Result 361 states and 609 transitions. [2020-12-23 16:29:17,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 16:29:17,714 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-23 16:29:17,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:29:17,733 INFO L225 Difference]: With dead ends: 361 [2020-12-23 16:29:17,734 INFO L226 Difference]: Without dead ends: 177 [2020-12-23 16:29:17,740 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 16:29:17,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-12-23 16:29:17,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2020-12-23 16:29:17,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-12-23 16:29:17,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 232 transitions. [2020-12-23 16:29:17,825 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 232 transitions. Word has length 8 [2020-12-23 16:29:17,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:29:17,825 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 232 transitions. [2020-12-23 16:29:17,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 16:29:17,826 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 232 transitions. [2020-12-23 16:29:17,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 16:29:17,827 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:29:17,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:29:17,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 16:29:17,828 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:29:17,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:29:17,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1136278917, now seen corresponding path program 1 times [2020-12-23 16:29:17,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:29:17,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136402820] [2020-12-23 16:29:17,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:29:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:29:17,960 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 16:29:17,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136402820] [2020-12-23 16:29:17,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:29:17,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:29:17,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764599132] [2020-12-23 16:29:17,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:29:17,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:29:17,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:29:17,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:29:17,966 INFO L87 Difference]: Start difference. First operand 177 states and 232 transitions. Second operand 4 states. [2020-12-23 16:29:18,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:29:18,581 INFO L93 Difference]: Finished difference Result 382 states and 501 transitions. [2020-12-23 16:29:18,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:29:18,583 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-23 16:29:18,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:29:18,586 INFO L225 Difference]: With dead ends: 382 [2020-12-23 16:29:18,586 INFO L226 Difference]: Without dead ends: 295 [2020-12-23 16:29:18,588 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 16:29:18,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-12-23 16:29:18,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 179. [2020-12-23 16:29:18,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-12-23 16:29:18,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 234 transitions. [2020-12-23 16:29:18,609 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 234 transitions. Word has length 10 [2020-12-23 16:29:18,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:29:18,609 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 234 transitions. [2020-12-23 16:29:18,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:29:18,610 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 234 transitions. [2020-12-23 16:29:18,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 16:29:18,614 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:29:18,615 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 16:29:18,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 16:29:18,618 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:29:18,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:29:18,619 INFO L82 PathProgramCache]: Analyzing trace with hash -2095912151, now seen corresponding path program 1 times [2020-12-23 16:29:18,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:29:18,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84662980] [2020-12-23 16:29:18,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:29:18,671 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:29:18,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720030415] [2020-12-23 16:29:18,672 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 16:29:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:29:18,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 16:29:18,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:29:19,035 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 16:29:19,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84662980] [2020-12-23 16:29:19,036 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:29:19,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720030415] [2020-12-23 16:29:19,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:29:19,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:29:19,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919281475] [2020-12-23 16:29:19,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:29:19,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:29:19,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:29:19,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:29:19,039 INFO L87 Difference]: Start difference. First operand 179 states and 234 transitions. Second operand 3 states. [2020-12-23 16:29:19,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:29:19,158 INFO L93 Difference]: Finished difference Result 375 states and 495 transitions. [2020-12-23 16:29:19,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:29:19,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-23 16:29:19,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:29:19,160 INFO L225 Difference]: With dead ends: 375 [2020-12-23 16:29:19,160 INFO L226 Difference]: Without dead ends: 200 [2020-12-23 16:29:19,162 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 16:29:19,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-12-23 16:29:19,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199. [2020-12-23 16:29:19,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-12-23 16:29:19,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 254 transitions. [2020-12-23 16:29:19,173 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 254 transitions. Word has length 62 [2020-12-23 16:29:19,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:29:19,174 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 254 transitions. [2020-12-23 16:29:19,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:29:19,174 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 254 transitions. [2020-12-23 16:29:19,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 16:29:19,176 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:29:19,177 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 16:29:19,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 16:29:19,392 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:29:19,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:29:19,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1305568807, now seen corresponding path program 1 times [2020-12-23 16:29:19,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:29:19,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55873062] [2020-12-23 16:29:19,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:29:19,444 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:29:19,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1048040721] [2020-12-23 16:29:19,445 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 16:29:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:29:19,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 16:29:19,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:29:19,823 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 16:29:19,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55873062] [2020-12-23 16:29:19,824 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:29:19,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048040721] [2020-12-23 16:29:19,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:29:19,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:29:19,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559390968] [2020-12-23 16:29:19,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:29:19,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:29:19,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:29:19,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:29:19,827 INFO L87 Difference]: Start difference. First operand 199 states and 254 transitions. Second operand 4 states. [2020-12-23 16:29:19,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:29:19,933 INFO L93 Difference]: Finished difference Result 386 states and 496 transitions. [2020-12-23 16:29:19,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:29:19,933 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-23 16:29:19,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:29:19,935 INFO L225 Difference]: With dead ends: 386 [2020-12-23 16:29:19,935 INFO L226 Difference]: Without dead ends: 191 [2020-12-23 16:29:19,937 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 16:29:19,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-12-23 16:29:19,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 185. [2020-12-23 16:29:19,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-12-23 16:29:19,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 233 transitions. [2020-12-23 16:29:19,955 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 233 transitions. Word has length 62 [2020-12-23 16:29:19,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:29:19,956 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 233 transitions. [2020-12-23 16:29:19,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:29:19,958 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 233 transitions. [2020-12-23 16:29:19,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 16:29:19,963 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:29:19,964 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 16:29:20,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:29:20,168 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:29:20,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:29:20,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1777715509, now seen corresponding path program 1 times [2020-12-23 16:29:20,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:29:20,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919099344] [2020-12-23 16:29:20,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:29:20,188 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:29:20,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560682710] [2020-12-23 16:29:20,188 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 16:29:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:29:20,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 16:29:20,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:29:20,497 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 16:29:20,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919099344] [2020-12-23 16:29:20,498 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:29:20,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560682710] [2020-12-23 16:29:20,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:29:20,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:29:20,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997137679] [2020-12-23 16:29:20,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:29:20,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:29:20,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:29:20,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:29:20,501 INFO L87 Difference]: Start difference. First operand 185 states and 233 transitions. Second operand 3 states. [2020-12-23 16:29:20,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:29:20,631 INFO L93 Difference]: Finished difference Result 479 states and 602 transitions. [2020-12-23 16:29:20,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:29:20,632 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-23 16:29:20,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:29:20,634 INFO L225 Difference]: With dead ends: 479 [2020-12-23 16:29:20,634 INFO L226 Difference]: Without dead ends: 298 [2020-12-23 16:29:20,635 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 16:29:20,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-23 16:29:20,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 291. [2020-12-23 16:29:20,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-12-23 16:29:20,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 366 transitions. [2020-12-23 16:29:20,647 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 366 transitions. Word has length 62 [2020-12-23 16:29:20,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:29:20,648 INFO L481 AbstractCegarLoop]: Abstraction has 291 states and 366 transitions. [2020-12-23 16:29:20,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:29:20,648 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 366 transitions. [2020-12-23 16:29:20,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 16:29:20,649 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:29:20,649 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 16:29:20,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:29:20,865 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:29:20,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:29:20,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1300403396, now seen corresponding path program 1 times [2020-12-23 16:29:20,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:29:20,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684090478] [2020-12-23 16:29:20,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:29:20,889 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:29:20,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [234783284] [2020-12-23 16:29:20,890 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 16:29:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:29:21,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 16:29:21,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:29:21,237 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 16:29:21,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684090478] [2020-12-23 16:29:21,238 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:29:21,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234783284] [2020-12-23 16:29:21,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:29:21,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:29:21,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470690872] [2020-12-23 16:29:21,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:29:21,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:29:21,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:29:21,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:29:21,241 INFO L87 Difference]: Start difference. First operand 291 states and 366 transitions. Second operand 3 states. [2020-12-23 16:29:21,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:29:21,272 INFO L93 Difference]: Finished difference Result 536 states and 683 transitions. [2020-12-23 16:29:21,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:29:21,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-23 16:29:21,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:29:21,274 INFO L225 Difference]: With dead ends: 536 [2020-12-23 16:29:21,275 INFO L226 Difference]: Without dead ends: 293 [2020-12-23 16:29:21,276 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 16:29:21,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-12-23 16:29:21,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2020-12-23 16:29:21,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-12-23 16:29:21,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 368 transitions. [2020-12-23 16:29:21,288 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 368 transitions. Word has length 69 [2020-12-23 16:29:21,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:29:21,288 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 368 transitions. [2020-12-23 16:29:21,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:29:21,289 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 368 transitions. [2020-12-23 16:29:21,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-23 16:29:21,290 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:29:21,290 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 16:29:21,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:29:21,497 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:29:21,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:29:21,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1522577957, now seen corresponding path program 1 times [2020-12-23 16:29:21,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:29:21,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732613798] [2020-12-23 16:29:21,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:29:21,518 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:29:21,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [712888086] [2020-12-23 16:29:21,519 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 16:29:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:29:21,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 16:29:21,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:29:21,777 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 16:29:21,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732613798] [2020-12-23 16:29:21,777 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:29:21,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712888086] [2020-12-23 16:29:21,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 16:29:21,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-23 16:29:21,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685064926] [2020-12-23 16:29:21,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:29:21,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:29:21,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:29:21,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:29:21,780 INFO L87 Difference]: Start difference. First operand 293 states and 368 transitions. Second operand 4 states. [2020-12-23 16:29:21,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:29:21,818 INFO L93 Difference]: Finished difference Result 540 states and 687 transitions. [2020-12-23 16:29:21,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:29:21,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-12-23 16:29:21,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:29:21,821 INFO L225 Difference]: With dead ends: 540 [2020-12-23 16:29:21,821 INFO L226 Difference]: Without dead ends: 295 [2020-12-23 16:29:21,822 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 16:29:21,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-12-23 16:29:21,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2020-12-23 16:29:21,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-12-23 16:29:21,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 370 transitions. [2020-12-23 16:29:21,833 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 370 transitions. Word has length 71 [2020-12-23 16:29:21,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:29:21,833 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 370 transitions. [2020-12-23 16:29:21,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:29:21,833 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 370 transitions. [2020-12-23 16:29:21,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 16:29:21,834 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:29:21,834 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 16:29:22,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 16:29:22,048 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:29:22,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:29:22,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1094780836, now seen corresponding path program 2 times [2020-12-23 16:29:22,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:29:22,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439488500] [2020-12-23 16:29:22,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:29:22,067 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:29:22,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [341813640] [2020-12-23 16:29:22,067 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 16:29:22,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 16:29:22,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:29:22,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 16:29:22,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:29:22,383 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 16:29:22,384 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:29:22,387 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:29:22,389 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:29:22,390 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-12-23 16:29:22,408 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 16:29:22,411 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:29:22,413 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:29:22,414 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 16:29:22,414 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-23 16:29:22,425 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 16:29:22,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439488500] [2020-12-23 16:29:22,426 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:29:22,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341813640] [2020-12-23 16:29:22,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:29:22,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:29:22,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430472350] [2020-12-23 16:29:22,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:29:22,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:29:22,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:29:22,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:29:22,428 INFO L87 Difference]: Start difference. First operand 295 states and 370 transitions. Second operand 4 states. [2020-12-23 16:29:22,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:29:22,860 INFO L93 Difference]: Finished difference Result 383 states and 487 transitions. [2020-12-23 16:29:22,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:29:22,860 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-12-23 16:29:22,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:29:22,863 INFO L225 Difference]: With dead ends: 383 [2020-12-23 16:29:22,864 INFO L226 Difference]: Without dead ends: 379 [2020-12-23 16:29:22,864 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 16:29:22,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-12-23 16:29:22,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 297. [2020-12-23 16:29:22,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-12-23 16:29:22,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 372 transitions. [2020-12-23 16:29:22,876 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 372 transitions. Word has length 73 [2020-12-23 16:29:22,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:29:22,876 INFO L481 AbstractCegarLoop]: Abstraction has 297 states and 372 transitions. [2020-12-23 16:29:22,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:29:22,877 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 372 transitions. [2020-12-23 16:29:22,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-23 16:29:22,878 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:29:22,878 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 16:29:23,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:29:23,092 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:29:23,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:29:23,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1878713718, now seen corresponding path program 1 times [2020-12-23 16:29:23,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:29:23,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486917317] [2020-12-23 16:29:23,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:29:23,111 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:29:23,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [181369329] [2020-12-23 16:29:23,112 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 16:29:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:29:23,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 16:29:23,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:29:23,478 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 16:29:23,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486917317] [2020-12-23 16:29:23,478 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:29:23,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181369329] [2020-12-23 16:29:23,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:29:23,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:29:23,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209998854] [2020-12-23 16:29:23,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:29:23,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:29:23,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:29:23,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:29:23,481 INFO L87 Difference]: Start difference. First operand 297 states and 372 transitions. Second operand 3 states. [2020-12-23 16:29:23,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:29:23,623 INFO L93 Difference]: Finished difference Result 487 states and 631 transitions. [2020-12-23 16:29:23,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:29:23,628 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-23 16:29:23,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:29:23,633 INFO L225 Difference]: With dead ends: 487 [2020-12-23 16:29:23,633 INFO L226 Difference]: Without dead ends: 339 [2020-12-23 16:29:23,634 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 16:29:23,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-12-23 16:29:23,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 337. [2020-12-23 16:29:23,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-12-23 16:29:23,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 412 transitions. [2020-12-23 16:29:23,649 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 412 transitions. Word has length 107 [2020-12-23 16:29:23,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:29:23,649 INFO L481 AbstractCegarLoop]: Abstraction has 337 states and 412 transitions. [2020-12-23 16:29:23,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:29:23,650 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 412 transitions. [2020-12-23 16:29:23,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-23 16:29:23,651 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:29:23,651 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 16:29:23,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:29:23,866 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:29:23,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:29:23,867 INFO L82 PathProgramCache]: Analyzing trace with hash 2096048526, now seen corresponding path program 1 times [2020-12-23 16:29:23,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:29:23,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122593313] [2020-12-23 16:29:23,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:29:23,885 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:29:23,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [454814124] [2020-12-23 16:29:23,886 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 16:29:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:29:24,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 16:29:24,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:29:24,250 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 16:29:24,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122593313] [2020-12-23 16:29:24,251 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:29:24,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454814124] [2020-12-23 16:29:24,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:29:24,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:29:24,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834400930] [2020-12-23 16:29:24,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:29:24,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:29:24,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:29:24,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:29:24,253 INFO L87 Difference]: Start difference. First operand 337 states and 412 transitions. Second operand 4 states. [2020-12-23 16:29:24,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:29:24,347 INFO L93 Difference]: Finished difference Result 502 states and 626 transitions. [2020-12-23 16:29:24,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:29:24,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-12-23 16:29:24,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:29:24,350 INFO L225 Difference]: With dead ends: 502 [2020-12-23 16:29:24,350 INFO L226 Difference]: Without dead ends: 314 [2020-12-23 16:29:24,351 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 16:29:24,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-12-23 16:29:24,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 309. [2020-12-23 16:29:24,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-12-23 16:29:24,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 370 transitions. [2020-12-23 16:29:24,363 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 370 transitions. Word has length 107 [2020-12-23 16:29:24,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:29:24,363 INFO L481 AbstractCegarLoop]: Abstraction has 309 states and 370 transitions. [2020-12-23 16:29:24,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:29:24,363 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 370 transitions. [2020-12-23 16:29:24,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-23 16:29:24,364 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:29:24,365 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 16:29:24,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 16:29:24,570 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:29:24,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:29:24,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1213199680, now seen corresponding path program 1 times [2020-12-23 16:29:24,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:29:24,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809565817] [2020-12-23 16:29:24,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:29:24,612 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:29:24,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [360034831] [2020-12-23 16:29:24,612 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 16:29:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:29:24,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 16:29:24,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:29:24,999 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 16:29:25,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809565817] [2020-12-23 16:29:25,000 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:29:25,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360034831] [2020-12-23 16:29:25,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 16:29:25,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 16:29:25,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38262513] [2020-12-23 16:29:25,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 16:29:25,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:29:25,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 16:29:25,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:29:25,002 INFO L87 Difference]: Start difference. First operand 309 states and 370 transitions. Second operand 5 states. [2020-12-23 16:29:25,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:29:25,050 INFO L93 Difference]: Finished difference Result 572 states and 691 transitions. [2020-12-23 16:29:25,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 16:29:25,051 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-12-23 16:29:25,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:29:25,053 INFO L225 Difference]: With dead ends: 572 [2020-12-23 16:29:25,053 INFO L226 Difference]: Without dead ends: 311 [2020-12-23 16:29:25,054 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 16:29:25,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-12-23 16:29:25,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2020-12-23 16:29:25,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-12-23 16:29:25,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 372 transitions. [2020-12-23 16:29:25,067 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 372 transitions. Word has length 107 [2020-12-23 16:29:25,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:29:25,068 INFO L481 AbstractCegarLoop]: Abstraction has 311 states and 372 transitions. [2020-12-23 16:29:25,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 16:29:25,068 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 372 transitions. [2020-12-23 16:29:25,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-23 16:29:25,069 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:29:25,069 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 16:29:25,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:29:25,284 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:29:25,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:29:25,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1565711905, now seen corresponding path program 2 times [2020-12-23 16:29:25,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:29:25,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166828940] [2020-12-23 16:29:25,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:29:25,314 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:29:25,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1665014322] [2020-12-23 16:29:25,315 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 16:29:25,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:29:25,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:29:25,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 16:29:25,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:29:25,812 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 16:29:25,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166828940] [2020-12-23 16:29:25,813 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:29:25,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665014322] [2020-12-23 16:29:25,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 16:29:25,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 16:29:25,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419307997] [2020-12-23 16:29:25,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 16:29:25,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:29:25,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 16:29:25,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:29:25,816 INFO L87 Difference]: Start difference. First operand 311 states and 372 transitions. Second operand 6 states. [2020-12-23 16:29:25,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:29:25,878 INFO L93 Difference]: Finished difference Result 576 states and 695 transitions. [2020-12-23 16:29:25,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 16:29:25,879 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2020-12-23 16:29:25,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:29:25,881 INFO L225 Difference]: With dead ends: 576 [2020-12-23 16:29:25,881 INFO L226 Difference]: Without dead ends: 313 [2020-12-23 16:29:25,882 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 16:29:25,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-12-23 16:29:25,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2020-12-23 16:29:25,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-12-23 16:29:25,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 374 transitions. [2020-12-23 16:29:25,896 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 374 transitions. Word has length 109 [2020-12-23 16:29:25,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:29:25,897 INFO L481 AbstractCegarLoop]: Abstraction has 313 states and 374 transitions. [2020-12-23 16:29:25,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 16:29:25,897 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 374 transitions. [2020-12-23 16:29:25,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-23 16:29:25,899 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:29:25,899 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 16:29:26,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:29:26,107 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:29:26,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:29:26,108 INFO L82 PathProgramCache]: Analyzing trace with hash -383989728, now seen corresponding path program 3 times [2020-12-23 16:29:26,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:29:26,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980286987] [2020-12-23 16:29:26,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:29:26,137 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:29:26,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [468864190] [2020-12-23 16:29:26,138 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 16:29:26,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 16:29:26,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:29:26,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 16:29:26,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:29:26,635 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 16:29:26,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980286987] [2020-12-23 16:29:26,636 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:29:26,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468864190] [2020-12-23 16:29:26,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:29:26,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:29:26,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803225365] [2020-12-23 16:29:26,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:29:26,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:29:26,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:29:26,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:29:26,638 INFO L87 Difference]: Start difference. First operand 313 states and 374 transitions. Second operand 4 states. [2020-12-23 16:29:26,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:29:26,998 INFO L93 Difference]: Finished difference Result 644 states and 770 transitions. [2020-12-23 16:29:26,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:29:26,998 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-12-23 16:29:26,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:29:27,001 INFO L225 Difference]: With dead ends: 644 [2020-12-23 16:29:27,001 INFO L226 Difference]: Without dead ends: 379 [2020-12-23 16:29:27,002 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 16:29:27,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-12-23 16:29:27,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 372. [2020-12-23 16:29:27,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-12-23 16:29:27,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 442 transitions. [2020-12-23 16:29:27,018 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 442 transitions. Word has length 111 [2020-12-23 16:29:27,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:29:27,018 INFO L481 AbstractCegarLoop]: Abstraction has 372 states and 442 transitions. [2020-12-23 16:29:27,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:29:27,018 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 442 transitions. [2020-12-23 16:29:27,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-23 16:29:27,020 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:29:27,020 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 16:29:27,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 16:29:27,235 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:29:27,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:29:27,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1107954682, now seen corresponding path program 1 times [2020-12-23 16:29:27,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:29:27,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143684839] [2020-12-23 16:29:27,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:29:27,280 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:29:27,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [220981164] [2020-12-23 16:29:27,280 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 16:29:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:29:27,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 16:29:27,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:29:27,701 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 16:29:27,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143684839] [2020-12-23 16:29:27,702 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:29:27,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220981164] [2020-12-23 16:29:27,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 16:29:27,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 16:29:27,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590370409] [2020-12-23 16:29:27,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 16:29:27,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:29:27,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 16:29:27,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:29:27,704 INFO L87 Difference]: Start difference. First operand 372 states and 442 transitions. Second operand 7 states. [2020-12-23 16:29:27,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:29:27,776 INFO L93 Difference]: Finished difference Result 691 states and 827 transitions. [2020-12-23 16:29:27,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 16:29:27,776 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-12-23 16:29:27,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:29:27,779 INFO L225 Difference]: With dead ends: 691 [2020-12-23 16:29:27,779 INFO L226 Difference]: Without dead ends: 374 [2020-12-23 16:29:27,780 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 16:29:27,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2020-12-23 16:29:27,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2020-12-23 16:29:27,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-12-23 16:29:27,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 444 transitions. [2020-12-23 16:29:27,796 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 444 transitions. Word has length 118 [2020-12-23 16:29:27,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:29:27,796 INFO L481 AbstractCegarLoop]: Abstraction has 374 states and 444 transitions. [2020-12-23 16:29:27,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 16:29:27,796 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 444 transitions. [2020-12-23 16:29:27,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-12-23 16:29:27,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:29:27,798 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 16:29:28,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 16:29:28,013 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:29:28,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:29:28,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1744267321, now seen corresponding path program 2 times [2020-12-23 16:29:28,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:29:28,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980002693] [2020-12-23 16:29:28,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:29:28,029 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:29:28,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1406877520] [2020-12-23 16:29:28,030 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 16:29:28,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:29:28,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:29:28,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 16:29:28,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:29:28,755 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 16:29:28,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980002693] [2020-12-23 16:29:28,756 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 16:29:28,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406877520] [2020-12-23 16:29:28,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 16:29:28,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 16:29:28,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901325612] [2020-12-23 16:29:28,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 16:29:28,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:29:28,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 16:29:28,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-23 16:29:28,758 INFO L87 Difference]: Start difference. First operand 374 states and 444 transitions. Second operand 8 states. [2020-12-23 16:29:28,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:29:28,823 INFO L93 Difference]: Finished difference Result 694 states and 830 transitions. [2020-12-23 16:29:28,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 16:29:28,824 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 120 [2020-12-23 16:29:28,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:29:28,826 INFO L225 Difference]: With dead ends: 694 [2020-12-23 16:29:28,826 INFO L226 Difference]: Without dead ends: 376 [2020-12-23 16:29:28,827 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 16:29:28,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-12-23 16:29:28,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2020-12-23 16:29:28,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-12-23 16:29:28,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 446 transitions. [2020-12-23 16:29:28,843 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 446 transitions. Word has length 120 [2020-12-23 16:29:28,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:29:28,843 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 446 transitions. [2020-12-23 16:29:28,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 16:29:28,843 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 446 transitions. [2020-12-23 16:29:28,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-23 16:29:28,845 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:29:28,845 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 16:29:29,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-23 16:29:29,058 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 16:29:29,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:29:29,059 INFO L82 PathProgramCache]: Analyzing trace with hash -994826982, now seen corresponding path program 3 times [2020-12-23 16:29:29,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:29:29,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849615265] [2020-12-23 16:29:29,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:29:29,074 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 16:29:29,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [399195401] [2020-12-23 16:29:29,074 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