/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_BER_test2-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 15:53:47,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 15:53:47,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 15:53:47,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-23 15:53:47,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 15:53:47,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 15:53:47,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 15:53:47,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 15:53:47,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 15:53:47,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 15:53:47,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 15:53:47,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 15:53:47,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 15:53:47,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 15:53:47,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 15:53:47,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 15:53:47,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 15:53:47,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 15:53:47,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 15:53:47,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 15:53:47,610 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 15:53:47,638 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 15:53:47,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 15:53:47,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 15:53:47,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 15:53:47,641 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 15:53:47,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 15:53:47,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 15:53:47,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 15:53:47,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 15:53:47,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 15:53:47,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 15:53:47,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 15:53:47,642 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 15:53:47,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 15:53:47,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 15:53:47,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 15:53:47,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 15:53:47,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 15:53:47,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 15:53:47,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 15:53:47,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 15:53:47,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 15:53:47,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 15:53:47,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 15:53:47,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 15:53:47,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 15:53:48,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 15:53:48,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 15:53:48,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 15:53:48,040 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 15:53:48,041 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 15:53:48,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i [2020-12-23 15:53:48,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a20858c08/0ab6a8d2f2eb48acac6076c08589d53b/FLAGe7deadb38 [2020-12-23 15:53:48,877 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 15:53:48,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i [2020-12-23 15:53:48,894 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a20858c08/0ab6a8d2f2eb48acac6076c08589d53b/FLAGe7deadb38 [2020-12-23 15:53:49,027 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a20858c08/0ab6a8d2f2eb48acac6076c08589d53b [2020-12-23 15:53:49,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 15:53:49,039 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 15:53:49,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 15:53:49,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 15:53:49,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 15:53:49,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 03:53:49" (1/1) ... [2020-12-23 15:53:49,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aa61c97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:53:49, skipping insertion in model container [2020-12-23 15:53:49,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 03:53:49" (1/1) ... [2020-12-23 15:53:49,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 15:53:49,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 15:53:49,634 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_BER_test2-1.i[37019,37032] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~user~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],StructAccessExpression[IdentifierExpression[~user~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~_ha_hashv~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_j~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_i~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_k~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[60],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[48],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[56],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem37,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem37,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem38,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[#t~mem38,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem39,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[12],StructAccessExpression[IdentifierExpression[#t~mem39,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem40,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[28],StructAccessExpression[IdentifierExpression[#t~mem40,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem41,],base],StructAccessExpression[IdentifierExpression[#t~mem41,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem43,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[48],StructAccessExpression[IdentifierExpression[#t~mem43,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~users~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem56,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[#t~mem56,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem57,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem57,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~_ha_bkt~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[40],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem69,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem69,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_ha_head~0,],base],StructAccessExpression[IdentifierExpression[~_ha_head~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~_he_new_buckets~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem81,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[#t~mem81,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem91,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[36],StructAccessExpression[IdentifierExpression[#t~mem91,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~_he_bkt_i~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_thh~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_hh_nxt~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_bkt~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_newbkt~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_he_thh~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[~_he_thh~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_he_thh~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[~_he_thh~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem117,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem117,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_he_newbkt~0,],base],StructAccessExpression[IdentifierExpression[~_he_newbkt~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~_he_thh~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem125,],base],StructAccessExpression[IdentifierExpression[#t~mem125,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem126,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[40],StructAccessExpression[IdentifierExpression[#t~mem126,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem136,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[44],StructAccessExpression[IdentifierExpression[#t~mem136,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~_hf_hashv~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_j~1,] left hand side expression in assignment: lhs: VariableLHS[~_hj_i~1,] left hand side expression in assignment: lhs: VariableLHS[~_hj_k~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~_hf_bkt~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] [2020-12-23 15:53:49,790 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_BER_test2-1.i[47352,47365] [2020-12-23 15:53:49,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 15:53:49,808 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 15:53:49,840 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_BER_test2-1.i[37019,37032] left hand side expression in assignment: address: IdentifierExpression[~#i~0,] left hand side expression in assignment: lhs: VariableLHS[~user~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],StructAccessExpression[IdentifierExpression[~user~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~_ha_hashv~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_j~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_i~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_k~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[60],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[48],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[56],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem42,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem42,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem43,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[#t~mem43,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem44,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[12],StructAccessExpression[IdentifierExpression[#t~mem44,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem45,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[28],StructAccessExpression[IdentifierExpression[#t~mem45,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem46,],base],StructAccessExpression[IdentifierExpression[#t~mem46,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem48,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[48],StructAccessExpression[IdentifierExpression[#t~mem48,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~users~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem61,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[#t~mem61,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem62,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[20],StructAccessExpression[IdentifierExpression[#t~mem62,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~_ha_bkt~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[40],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~user~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[~user~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem74,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem74,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_ha_head~0,],base],StructAccessExpression[IdentifierExpression[~_ha_head~0,],offset]]] left hand side expression in assignment: address: IdentifierExpression[~#_he_new_buckets~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem88,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[#t~mem88,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem98,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[36],StructAccessExpression[IdentifierExpression[#t~mem98,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~_he_bkt_i~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_thh~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_hh_nxt~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_bkt~0,] left hand side expression in assignment: lhs: VariableLHS[~_he_newbkt~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_he_thh~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[~_he_thh~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_he_thh~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[32],StructAccessExpression[IdentifierExpression[~_he_thh~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem125,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[#t~mem125,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~_he_newbkt~0,],base],StructAccessExpression[IdentifierExpression[~_he_newbkt~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~_he_thh~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem133,],base],StructAccessExpression[IdentifierExpression[#t~mem133,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem135,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[40],StructAccessExpression[IdentifierExpression[#t~mem135,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[#t~mem145,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[44],StructAccessExpression[IdentifierExpression[#t~mem145,],offset]]]] left hand side expression in assignment: address: IdentifierExpression[~#i~0,] left hand side expression in assignment: lhs: VariableLHS[~_hf_hashv~0,] left hand side expression in assignment: lhs: VariableLHS[~_hj_j~1,] left hand side expression in assignment: lhs: VariableLHS[~_hj_i~1,] left hand side expression in assignment: lhs: VariableLHS[~_hj_k~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~_hf_bkt~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] [2020-12-23 15:53:50,007 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_BER_test2-1.i[47352,47365] [2020-12-23 15:53:50,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 15:53:50,157 INFO L208 MainTranslator]: Completed translation [2020-12-23 15:53:50,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:53:50 WrapperNode [2020-12-23 15:53:50,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 15:53:50,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 15:53:50,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 15:53:50,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 15:53:50,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:53:50" (1/1) ... [2020-12-23 15:53:50,229 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:53:50" (1/1) ... [2020-12-23 15:53:50,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 15:53:50,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 15:53:50,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 15:53:50,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 15:53:50,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:53:50" (1/1) ... [2020-12-23 15:53:50,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:53:50" (1/1) ... [2020-12-23 15:53:50,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:53:50" (1/1) ... [2020-12-23 15:53:50,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:53:50" (1/1) ... [2020-12-23 15:53:50,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:53:50" (1/1) ... [2020-12-23 15:53:50,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:53:50" (1/1) ... [2020-12-23 15:53:50,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:53:50" (1/1) ... [2020-12-23 15:53:50,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 15:53:50,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 15:53:50,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 15:53:50,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 15:53:50,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:53:50" (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 15:53:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 15:53:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-12-23 15:53:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-23 15:53:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 15:53:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 15:53:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 15:53:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 15:53:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-23 15:53:50,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 15:53:50,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 15:53:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 15:53:52,365 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 15:53:52,365 INFO L299 CfgBuilder]: Removed 76 assume(true) statements. [2020-12-23 15:53:52,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 03:53:52 BoogieIcfgContainer [2020-12-23 15:53:52,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 15:53:52,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 15:53:52,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 15:53:52,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 15:53:52,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 03:53:49" (1/3) ... [2020-12-23 15:53:52,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33221d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 03:53:52, skipping insertion in model container [2020-12-23 15:53:52,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:53:50" (2/3) ... [2020-12-23 15:53:52,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33221d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 03:53:52, skipping insertion in model container [2020-12-23 15:53:52,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 03:53:52" (3/3) ... [2020-12-23 15:53:52,376 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test2-1.i [2020-12-23 15:53:52,382 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 15:53:52,387 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-23 15:53:52,406 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-23 15:53:52,432 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 15:53:52,432 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 15:53:52,432 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 15:53:52,432 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 15:53:52,432 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 15:53:52,433 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 15:53:52,433 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 15:53:52,433 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 15:53:52,452 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-12-23 15:53:52,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 15:53:52,458 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 15:53:52,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 15:53:52,459 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 15:53:52,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 15:53:52,465 INFO L82 PathProgramCache]: Analyzing trace with hash 239231399, now seen corresponding path program 1 times [2020-12-23 15:53:52,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 15:53:52,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322557662] [2020-12-23 15:53:52,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 15:53:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 15:53:52,636 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 15:53:52,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322557662] [2020-12-23 15:53:52,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 15:53:52,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 15:53:52,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723917377] [2020-12-23 15:53:52,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 15:53:52,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 15:53:52,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 15:53:52,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 15:53:52,662 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 2 states. [2020-12-23 15:53:52,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 15:53:52,703 INFO L93 Difference]: Finished difference Result 352 states and 584 transitions. [2020-12-23 15:53:52,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 15:53:52,705 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-23 15:53:52,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 15:53:52,718 INFO L225 Difference]: With dead ends: 352 [2020-12-23 15:53:52,718 INFO L226 Difference]: Without dead ends: 173 [2020-12-23 15:53:52,722 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 15:53:52,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-12-23 15:53:52,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2020-12-23 15:53:52,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-12-23 15:53:52,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 225 transitions. [2020-12-23 15:53:52,773 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 225 transitions. Word has length 9 [2020-12-23 15:53:52,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 15:53:52,773 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 225 transitions. [2020-12-23 15:53:52,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 15:53:52,774 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 225 transitions. [2020-12-23 15:53:52,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 15:53:52,776 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 15:53:52,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:53:52,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 15:53:52,777 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 15:53:52,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 15:53:52,778 INFO L82 PathProgramCache]: Analyzing trace with hash 627334177, now seen corresponding path program 1 times [2020-12-23 15:53:52,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 15:53:52,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018837596] [2020-12-23 15:53:52,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 15:53:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 15:53:52,882 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 15:53:52,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018837596] [2020-12-23 15:53:52,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 15:53:52,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 15:53:52,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505886198] [2020-12-23 15:53:52,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 15:53:52,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 15:53:52,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 15:53:52,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 15:53:52,887 INFO L87 Difference]: Start difference. First operand 173 states and 225 transitions. Second operand 4 states. [2020-12-23 15:53:53,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 15:53:53,283 INFO L93 Difference]: Finished difference Result 377 states and 490 transitions. [2020-12-23 15:53:53,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 15:53:53,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-12-23 15:53:53,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 15:53:53,287 INFO L225 Difference]: With dead ends: 377 [2020-12-23 15:53:53,287 INFO L226 Difference]: Without dead ends: 294 [2020-12-23 15:53:53,289 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 15:53:53,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-12-23 15:53:53,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 175. [2020-12-23 15:53:53,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-12-23 15:53:53,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 227 transitions. [2020-12-23 15:53:53,316 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 227 transitions. Word has length 44 [2020-12-23 15:53:53,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 15:53:53,317 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 227 transitions. [2020-12-23 15:53:53,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 15:53:53,319 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 227 transitions. [2020-12-23 15:53:53,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-23 15:53:53,325 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 15:53:53,328 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:53:53,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 15:53:53,328 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 15:53:53,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 15:53:53,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1103505073, now seen corresponding path program 1 times [2020-12-23 15:53:53,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 15:53:53,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674288348] [2020-12-23 15:53:53,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 15:53:53,387 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 15:53:53,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819955053] [2020-12-23 15:53:53,388 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 15:53:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 15:53:53,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 15:53:53,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 15:53:53,782 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 15:53:53,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674288348] [2020-12-23 15:53:53,784 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 15:53:53,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819955053] [2020-12-23 15:53:53,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 15:53:53,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 15:53:53,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045216031] [2020-12-23 15:53:53,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 15:53:53,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 15:53:53,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 15:53:53,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 15:53:53,796 INFO L87 Difference]: Start difference. First operand 175 states and 227 transitions. Second operand 3 states. [2020-12-23 15:53:53,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 15:53:53,872 INFO L93 Difference]: Finished difference Result 367 states and 481 transitions. [2020-12-23 15:53:53,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 15:53:53,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-12-23 15:53:53,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 15:53:53,874 INFO L225 Difference]: With dead ends: 367 [2020-12-23 15:53:53,874 INFO L226 Difference]: Without dead ends: 196 [2020-12-23 15:53:53,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 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 15:53:53,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-12-23 15:53:53,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2020-12-23 15:53:53,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-12-23 15:53:53,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 247 transitions. [2020-12-23 15:53:53,889 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 247 transitions. Word has length 96 [2020-12-23 15:53:53,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 15:53:53,889 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 247 transitions. [2020-12-23 15:53:53,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 15:53:53,890 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 247 transitions. [2020-12-23 15:53:53,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-23 15:53:53,892 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 15:53:53,892 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:53:54,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 15:53:54,107 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 15:53:54,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 15:53:54,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1343744819, now seen corresponding path program 1 times [2020-12-23 15:53:54,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 15:53:54,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406117261] [2020-12-23 15:53:54,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 15:53:54,131 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 15:53:54,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [225809628] [2020-12-23 15:53:54,131 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 15:53:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 15:53:54,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 15:53:54,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 15:53:54,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 15:53:54,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406117261] [2020-12-23 15:53:54,482 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 15:53:54,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225809628] [2020-12-23 15:53:54,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 15:53:54,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 15:53:54,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720636290] [2020-12-23 15:53:54,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 15:53:54,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 15:53:54,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 15:53:54,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 15:53:54,487 INFO L87 Difference]: Start difference. First operand 195 states and 247 transitions. Second operand 3 states. [2020-12-23 15:53:54,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 15:53:54,579 INFO L93 Difference]: Finished difference Result 298 states and 384 transitions. [2020-12-23 15:53:54,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 15:53:54,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-12-23 15:53:54,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 15:53:54,581 INFO L225 Difference]: With dead ends: 298 [2020-12-23 15:53:54,581 INFO L226 Difference]: Without dead ends: 216 [2020-12-23 15:53:54,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 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 15:53:54,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-12-23 15:53:54,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2020-12-23 15:53:54,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-12-23 15:53:54,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 267 transitions. [2020-12-23 15:53:54,599 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 267 transitions. Word has length 96 [2020-12-23 15:53:54,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 15:53:54,599 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 267 transitions. [2020-12-23 15:53:54,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 15:53:54,600 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 267 transitions. [2020-12-23 15:53:54,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-23 15:53:54,604 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 15:53:54,604 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:53:54,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 15:53:54,818 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 15:53:54,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 15:53:54,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1663949871, now seen corresponding path program 1 times [2020-12-23 15:53:54,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 15:53:54,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014522283] [2020-12-23 15:53:54,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 15:53:54,841 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 15:53:54,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1697178813] [2020-12-23 15:53:54,842 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 15:53:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 15:53:55,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 15:53:55,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 15:53:55,175 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 15:53:55,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014522283] [2020-12-23 15:53:55,176 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 15:53:55,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697178813] [2020-12-23 15:53:55,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 15:53:55,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 15:53:55,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915075032] [2020-12-23 15:53:55,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 15:53:55,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 15:53:55,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 15:53:55,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 15:53:55,181 INFO L87 Difference]: Start difference. First operand 215 states and 267 transitions. Second operand 4 states. [2020-12-23 15:53:55,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 15:53:55,283 INFO L93 Difference]: Finished difference Result 418 states and 522 transitions. [2020-12-23 15:53:55,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 15:53:55,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2020-12-23 15:53:55,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 15:53:55,285 INFO L225 Difference]: With dead ends: 418 [2020-12-23 15:53:55,286 INFO L226 Difference]: Without dead ends: 207 [2020-12-23 15:53:55,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 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 15:53:55,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-12-23 15:53:55,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 201. [2020-12-23 15:53:55,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-12-23 15:53:55,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 246 transitions. [2020-12-23 15:53:55,304 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 246 transitions. Word has length 96 [2020-12-23 15:53:55,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 15:53:55,306 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 246 transitions. [2020-12-23 15:53:55,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 15:53:55,306 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 246 transitions. [2020-12-23 15:53:55,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-23 15:53:55,314 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 15:53:55,316 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:53:55,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 15:53:55,533 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 15:53:55,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 15:53:55,534 INFO L82 PathProgramCache]: Analyzing trace with hash 569918303, now seen corresponding path program 1 times [2020-12-23 15:53:55,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 15:53:55,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460563777] [2020-12-23 15:53:55,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 15:53:55,556 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 15:53:55,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2086260301] [2020-12-23 15:53:55,556 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 15:53:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 15:53:55,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 15:53:55,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 15:53:55,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 15:53:55,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460563777] [2020-12-23 15:53:55,917 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 15:53:55,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086260301] [2020-12-23 15:53:55,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 15:53:55,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 15:53:55,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860418101] [2020-12-23 15:53:55,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 15:53:55,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 15:53:55,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 15:53:55,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 15:53:55,924 INFO L87 Difference]: Start difference. First operand 201 states and 246 transitions. Second operand 4 states. [2020-12-23 15:53:56,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 15:53:56,016 INFO L93 Difference]: Finished difference Result 295 states and 364 transitions. [2020-12-23 15:53:56,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 15:53:56,017 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2020-12-23 15:53:56,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 15:53:56,018 INFO L225 Difference]: With dead ends: 295 [2020-12-23 15:53:56,019 INFO L226 Difference]: Without dead ends: 193 [2020-12-23 15:53:56,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 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 15:53:56,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-12-23 15:53:56,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 187. [2020-12-23 15:53:56,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-12-23 15:53:56,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 225 transitions. [2020-12-23 15:53:56,026 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 225 transitions. Word has length 96 [2020-12-23 15:53:56,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 15:53:56,027 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 225 transitions. [2020-12-23 15:53:56,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 15:53:56,027 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 225 transitions. [2020-12-23 15:53:56,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-23 15:53:56,028 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 15:53:56,028 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:53:56,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 15:53:56,242 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 15:53:56,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 15:53:56,243 INFO L82 PathProgramCache]: Analyzing trace with hash -312930543, now seen corresponding path program 1 times [2020-12-23 15:53:56,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 15:53:56,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755233921] [2020-12-23 15:53:56,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 15:53:56,268 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 15:53:56,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265641689] [2020-12-23 15:53:56,270 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 15:53:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 15:53:56,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 15:53:56,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 15:53:56,646 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 15:53:56,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755233921] [2020-12-23 15:53:56,647 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 15:53:56,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265641689] [2020-12-23 15:53:56,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 15:53:56,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 15:53:56,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144465385] [2020-12-23 15:53:56,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 15:53:56,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 15:53:56,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 15:53:56,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 15:53:56,650 INFO L87 Difference]: Start difference. First operand 187 states and 225 transitions. Second operand 3 states. [2020-12-23 15:53:56,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 15:53:56,705 INFO L93 Difference]: Finished difference Result 486 states and 579 transitions. [2020-12-23 15:53:56,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 15:53:56,706 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-12-23 15:53:56,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 15:53:56,708 INFO L225 Difference]: With dead ends: 486 [2020-12-23 15:53:56,708 INFO L226 Difference]: Without dead ends: 303 [2020-12-23 15:53:56,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 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 15:53:56,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-12-23 15:53:56,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 291. [2020-12-23 15:53:56,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-12-23 15:53:56,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 350 transitions. [2020-12-23 15:53:56,721 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 350 transitions. Word has length 96 [2020-12-23 15:53:56,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 15:53:56,722 INFO L481 AbstractCegarLoop]: Abstraction has 291 states and 350 transitions. [2020-12-23 15:53:56,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 15:53:56,722 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 350 transitions. [2020-12-23 15:53:56,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-23 15:53:56,723 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 15:53:56,723 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:53:56,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 15:53:56,940 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 15:53:56,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 15:53:56,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1090926304, now seen corresponding path program 1 times [2020-12-23 15:53:56,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 15:53:56,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572420569] [2020-12-23 15:53:56,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 15:53:56,990 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 15:53:56,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1678895717] [2020-12-23 15:53:56,991 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 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 15:53:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 15:53:57,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 15:53:57,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 15:53:57,307 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 15:53:57,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572420569] [2020-12-23 15:53:57,308 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 15:53:57,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678895717] [2020-12-23 15:53:57,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 15:53:57,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 15:53:57,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118835844] [2020-12-23 15:53:57,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 15:53:57,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 15:53:57,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 15:53:57,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 15:53:57,310 INFO L87 Difference]: Start difference. First operand 291 states and 350 transitions. Second operand 3 states. [2020-12-23 15:53:57,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 15:53:57,336 INFO L93 Difference]: Finished difference Result 536 states and 651 transitions. [2020-12-23 15:53:57,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 15:53:57,337 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-23 15:53:57,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 15:53:57,339 INFO L225 Difference]: With dead ends: 536 [2020-12-23 15:53:57,339 INFO L226 Difference]: Without dead ends: 293 [2020-12-23 15:53:57,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 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 15:53:57,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-12-23 15:53:57,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2020-12-23 15:53:57,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-12-23 15:53:57,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 352 transitions. [2020-12-23 15:53:57,350 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 352 transitions. Word has length 103 [2020-12-23 15:53:57,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 15:53:57,350 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 352 transitions. [2020-12-23 15:53:57,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 15:53:57,351 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 352 transitions. [2020-12-23 15:53:57,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-23 15:53:57,352 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 15:53:57,352 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:53:57,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 15:53:57,567 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 15:53:57,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 15:53:57,568 INFO L82 PathProgramCache]: Analyzing trace with hash 77446145, now seen corresponding path program 1 times [2020-12-23 15:53:57,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 15:53:57,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622851145] [2020-12-23 15:53:57,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 15:53:57,586 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 15:53:57,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1063503132] [2020-12-23 15:53:57,586 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 15:53:57,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 15:53:57,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 15:53:57,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 15:53:57,927 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 15:53:57,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622851145] [2020-12-23 15:53:57,928 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 15:53:57,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063503132] [2020-12-23 15:53:57,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 15:53:57,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-23 15:53:57,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666023394] [2020-12-23 15:53:57,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 15:53:57,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 15:53:57,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 15:53:57,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 15:53:57,930 INFO L87 Difference]: Start difference. First operand 293 states and 352 transitions. Second operand 4 states. [2020-12-23 15:53:57,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 15:53:57,970 INFO L93 Difference]: Finished difference Result 540 states and 655 transitions. [2020-12-23 15:53:57,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 15:53:57,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-23 15:53:57,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 15:53:57,972 INFO L225 Difference]: With dead ends: 540 [2020-12-23 15:53:57,972 INFO L226 Difference]: Without dead ends: 295 [2020-12-23 15:53:57,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 102 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 15:53:57,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-12-23 15:53:57,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2020-12-23 15:53:57,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-12-23 15:53:57,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 354 transitions. [2020-12-23 15:53:57,983 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 354 transitions. Word has length 105 [2020-12-23 15:53:57,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 15:53:57,983 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 354 transitions. [2020-12-23 15:53:57,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 15:53:57,984 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 354 transitions. [2020-12-23 15:53:57,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-23 15:53:57,985 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 15:53:57,985 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 15:53:58,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 15:53:58,201 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 15:53:58,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 15:53:58,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1213198784, now seen corresponding path program 2 times [2020-12-23 15:53:58,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 15:53:58,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830290755] [2020-12-23 15:53:58,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 15:53:58,219 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 15:53:58,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [882032015] [2020-12-23 15:53:58,220 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 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 15:53:58,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 15:53:58,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 15:53:58,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 15:53:58,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 15:53:58,642 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 15:53:58,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830290755] [2020-12-23 15:53:58,642 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 15:53:58,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882032015] [2020-12-23 15:53:58,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 15:53:58,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 15:53:58,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231207066] [2020-12-23 15:53:58,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 15:53:58,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 15:53:58,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 15:53:58,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 15:53:58,645 INFO L87 Difference]: Start difference. First operand 295 states and 354 transitions. Second operand 5 states. [2020-12-23 15:53:58,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 15:53:58,705 INFO L93 Difference]: Finished difference Result 544 states and 659 transitions. [2020-12-23 15:53:58,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 15:53:58,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-12-23 15:53:58,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 15:53:58,710 INFO L225 Difference]: With dead ends: 544 [2020-12-23 15:53:58,710 INFO L226 Difference]: Without dead ends: 297 [2020-12-23 15:53:58,711 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 15:53:58,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-12-23 15:53:58,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2020-12-23 15:53:58,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-12-23 15:53:58,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 356 transitions. [2020-12-23 15:53:58,722 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 356 transitions. Word has length 107 [2020-12-23 15:53:58,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 15:53:58,722 INFO L481 AbstractCegarLoop]: Abstraction has 297 states and 356 transitions. [2020-12-23 15:53:58,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 15:53:58,722 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 356 transitions. [2020-12-23 15:53:58,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-23 15:53:58,724 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 15:53:58,724 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 15:53:58,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 15:53:58,936 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 15:53:58,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 15:53:58,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1565711009, now seen corresponding path program 3 times [2020-12-23 15:53:58,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 15:53:58,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833251478] [2020-12-23 15:53:58,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 15:53:58,953 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 15:53:58,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2140633079] [2020-12-23 15:53:58,954 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 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 15:53:59,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 15:53:59,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 15:53:59,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 15:53:59,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 15:53:59,457 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-23 15:53:59,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833251478] [2020-12-23 15:53:59,457 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 15:53:59,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140633079] [2020-12-23 15:53:59,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 15:53:59,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 15:53:59,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479982788] [2020-12-23 15:53:59,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 15:53:59,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 15:53:59,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 15:53:59,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 15:53:59,460 INFO L87 Difference]: Start difference. First operand 297 states and 356 transitions. Second operand 4 states. [2020-12-23 15:53:59,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 15:53:59,703 INFO L93 Difference]: Finished difference Result 486 states and 583 transitions. [2020-12-23 15:53:59,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 15:53:59,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2020-12-23 15:53:59,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 15:53:59,706 INFO L225 Difference]: With dead ends: 486 [2020-12-23 15:53:59,706 INFO L226 Difference]: Without dead ends: 237 [2020-12-23 15:53:59,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 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 15:53:59,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-12-23 15:53:59,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2020-12-23 15:53:59,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-12-23 15:53:59,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 278 transitions. [2020-12-23 15:53:59,717 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 278 transitions. Word has length 109 [2020-12-23 15:53:59,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 15:53:59,717 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 278 transitions. [2020-12-23 15:53:59,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 15:53:59,717 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 278 transitions. [2020-12-23 15:53:59,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-23 15:53:59,719 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 15:53:59,719 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, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 15:53:59,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 15:53:59,933 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 15:53:59,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 15:53:59,934 INFO L82 PathProgramCache]: Analyzing trace with hash -2033164455, now seen corresponding path program 1 times [2020-12-23 15:53:59,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 15:53:59,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044539884] [2020-12-23 15:53:59,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 15:53:59,951 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 15:53:59,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2061542404] [2020-12-23 15:53:59,952 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 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 15:54:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 15:54:00,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 15:54:00,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 15:54:00,375 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 15:54:00,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044539884] [2020-12-23 15:54:00,376 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 15:54:00,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061542404] [2020-12-23 15:54:00,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 15:54:00,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 15:54:00,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907815084] [2020-12-23 15:54:00,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 15:54:00,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 15:54:00,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 15:54:00,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 15:54:00,379 INFO L87 Difference]: Start difference. First operand 237 states and 278 transitions. Second operand 6 states. [2020-12-23 15:54:00,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 15:54:00,464 INFO L93 Difference]: Finished difference Result 422 states and 500 transitions. [2020-12-23 15:54:00,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 15:54:00,465 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2020-12-23 15:54:00,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 15:54:00,467 INFO L225 Difference]: With dead ends: 422 [2020-12-23 15:54:00,467 INFO L226 Difference]: Without dead ends: 239 [2020-12-23 15:54:00,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 111 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 15:54:00,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-12-23 15:54:00,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2020-12-23 15:54:00,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-12-23 15:54:00,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 280 transitions. [2020-12-23 15:54:00,477 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 280 transitions. Word has length 116 [2020-12-23 15:54:00,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 15:54:00,477 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 280 transitions. [2020-12-23 15:54:00,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 15:54:00,477 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 280 transitions. [2020-12-23 15:54:00,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-23 15:54:00,479 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 15:54:00,479 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 15:54:00,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 15:54:00,694 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 15:54:00,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 15:54:00,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1107953786, now seen corresponding path program 2 times [2020-12-23 15:54:00,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 15:54:00,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133793345] [2020-12-23 15:54:00,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 15:54:00,711 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 15:54:00,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [578797732] [2020-12-23 15:54:00,711 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 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 15:54:01,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 15:54:01,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 15:54:01,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 15:54:01,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 15:54:02,094 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 15:54:02,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133793345] [2020-12-23 15:54:02,095 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 15:54:02,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578797732] [2020-12-23 15:54:02,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 15:54:02,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 15:54:02,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458897717] [2020-12-23 15:54:02,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 15:54:02,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 15:54:02,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 15:54:02,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-23 15:54:02,101 INFO L87 Difference]: Start difference. First operand 239 states and 280 transitions. Second operand 7 states. [2020-12-23 15:54:02,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 15:54:02,159 INFO L93 Difference]: Finished difference Result 425 states and 503 transitions. [2020-12-23 15:54:02,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 15:54:02,160 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-12-23 15:54:02,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 15:54:02,161 INFO L225 Difference]: With dead ends: 425 [2020-12-23 15:54:02,161 INFO L226 Difference]: Without dead ends: 241 [2020-12-23 15:54:02,162 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 15:54:02,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-12-23 15:54:02,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2020-12-23 15:54:02,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-12-23 15:54:02,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 282 transitions. [2020-12-23 15:54:02,173 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 282 transitions. Word has length 118 [2020-12-23 15:54:02,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 15:54:02,174 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 282 transitions. [2020-12-23 15:54:02,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 15:54:02,174 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 282 transitions. [2020-12-23 15:54:02,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-12-23 15:54:02,175 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 15:54:02,175 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 15:54:02,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 15:54:02,382 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 15:54:02,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 15:54:02,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1744266425, now seen corresponding path program 3 times [2020-12-23 15:54:02,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 15:54:02,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321635641] [2020-12-23 15:54:02,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 15:54:02,397 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 15:54:02,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [283034312] [2020-12-23 15:54:02,398 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 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