/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-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/list-properties/list-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 17:18:35,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 17:18:35,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 17:18:35,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 17:18:35,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 17:18:35,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 17:18:35,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 17:18:35,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 17:18:35,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 17:18:35,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 17:18:35,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 17:18:35,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 17:18:35,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 17:18:35,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 17:18:35,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 17:18:35,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 17:18:35,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 17:18:35,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 17:18:35,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 17:18:35,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 17:18:35,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 17:18:35,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 17:18:35,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 17:18:35,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 17:18:35,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 17:18:35,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 17:18:35,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 17:18:35,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 17:18:35,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 17:18:35,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 17:18:35,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 17:18:35,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 17:18:35,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 17:18:35,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 17:18:35,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 17:18:35,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 17:18:35,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 17:18:35,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 17:18:35,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 17:18:35,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 17:18:35,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 17:18:35,712 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-23 17:18:35,780 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 17:18:35,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 17:18:35,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 17:18:35,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 17:18:35,787 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 17:18:35,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 17:18:35,787 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 17:18:35,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 17:18:35,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 17:18:35,788 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 17:18:35,789 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 17:18:35,790 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 17:18:35,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 17:18:35,790 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 17:18:35,791 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 17:18:35,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 17:18:35,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 17:18:35,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 17:18:35,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 17:18:35,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 17:18:35,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 17:18:35,792 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 17:18:35,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 17:18:35,793 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 17:18:35,793 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 17:18:36,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 17:18:36,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 17:18:36,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 17:18:36,310 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 17:18:36,311 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 17:18:36,312 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list-1.i [2020-12-23 17:18:36,419 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/02560c095/3bac9074801e4b27a1edd4c955344194/FLAG99af11091 [2020-12-23 17:18:37,344 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 17:18:37,345 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/list-properties/list-1.i [2020-12-23 17:18:37,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/02560c095/3bac9074801e4b27a1edd4c955344194/FLAG99af11091 [2020-12-23 17:18:37,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/02560c095/3bac9074801e4b27a1edd4c955344194 [2020-12-23 17:18:37,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 17:18:37,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 17:18:37,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 17:18:37,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 17:18:37,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 17:18:37,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:18:37" (1/1) ... [2020-12-23 17:18:37,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70d54672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:37, skipping insertion in model container [2020-12-23 17:18:37,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:18:37" (1/1) ... [2020-12-23 17:18:37,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 17:18:37,664 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~p~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~p~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] [2020-12-23 17:18:38,178 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/list-properties/list-1.i[23408,23421] [2020-12-23 17:18:38,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:18:38,197 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~p~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~p~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~p~0,],base],StructAccessExpression[IdentifierExpression[~p~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] [2020-12-23 17:18:38,247 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/list-properties/list-1.i[23408,23421] [2020-12-23 17:18:38,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:18:38,330 INFO L208 MainTranslator]: Completed translation [2020-12-23 17:18:38,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:38 WrapperNode [2020-12-23 17:18:38,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 17:18:38,332 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 17:18:38,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 17:18:38,333 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 17:18:38,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:38" (1/1) ... [2020-12-23 17:18:38,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:38" (1/1) ... [2020-12-23 17:18:38,404 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 17:18:38,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 17:18:38,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 17:18:38,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 17:18:38,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:38" (1/1) ... [2020-12-23 17:18:38,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:38" (1/1) ... [2020-12-23 17:18:38,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:38" (1/1) ... [2020-12-23 17:18:38,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:38" (1/1) ... [2020-12-23 17:18:38,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:38" (1/1) ... [2020-12-23 17:18:38,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:38" (1/1) ... [2020-12-23 17:18:38,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:38" (1/1) ... [2020-12-23 17:18:38,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 17:18:38,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 17:18:38,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 17:18:38,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 17:18:38,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:38" (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 17:18:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 17:18:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 17:18:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 17:18:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-23 17:18:38,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 17:18:38,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-23 17:18:38,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 17:18:38,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 17:18:38,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 17:18:39,175 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 17:18:39,175 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-23 17:18:39,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:18:39 BoogieIcfgContainer [2020-12-23 17:18:39,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 17:18:39,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 17:18:39,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 17:18:39,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 17:18:39,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 05:18:37" (1/3) ... [2020-12-23 17:18:39,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339ec817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:18:39, skipping insertion in model container [2020-12-23 17:18:39,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:18:38" (2/3) ... [2020-12-23 17:18:39,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339ec817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:18:39, skipping insertion in model container [2020-12-23 17:18:39,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:18:39" (3/3) ... [2020-12-23 17:18:39,189 INFO L111 eAbstractionObserver]: Analyzing ICFG list-1.i [2020-12-23 17:18:39,197 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 17:18:39,204 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 26 error locations. [2020-12-23 17:18:39,227 INFO L253 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2020-12-23 17:18:39,256 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 17:18:39,257 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 17:18:39,257 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 17:18:39,257 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 17:18:39,257 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 17:18:39,258 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 17:18:39,258 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 17:18:39,258 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 17:18:39,278 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-12-23 17:18:39,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 17:18:39,287 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:39,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:39,289 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:39,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:39,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1807795398, now seen corresponding path program 1 times [2020-12-23 17:18:39,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:39,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481432166] [2020-12-23 17:18:39,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:39,516 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 17:18:39,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481432166] [2020-12-23 17:18:39,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:39,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:18:39,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330256748] [2020-12-23 17:18:39,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 17:18:39,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:39,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 17:18:39,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 17:18:39,552 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 2 states. [2020-12-23 17:18:39,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:39,582 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-12-23 17:18:39,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 17:18:39,585 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-23 17:18:39,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:39,599 INFO L225 Difference]: With dead ends: 66 [2020-12-23 17:18:39,599 INFO L226 Difference]: Without dead ends: 61 [2020-12-23 17:18:39,601 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 17:18:39,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-23 17:18:39,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-12-23 17:18:39,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-23 17:18:39,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2020-12-23 17:18:39,655 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 7 [2020-12-23 17:18:39,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:39,656 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2020-12-23 17:18:39,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 17:18:39,656 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2020-12-23 17:18:39,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 17:18:39,657 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:39,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:39,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 17:18:39,658 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:39,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:39,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1807769772, now seen corresponding path program 1 times [2020-12-23 17:18:39,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:39,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446233598] [2020-12-23 17:18:39,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:39,751 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 17:18:39,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446233598] [2020-12-23 17:18:39,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:39,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:18:39,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990790042] [2020-12-23 17:18:39,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 17:18:39,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:39,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 17:18:39,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 17:18:39,757 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 4 states. [2020-12-23 17:18:39,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:40,000 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2020-12-23 17:18:40,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 17:18:40,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-23 17:18:40,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:40,003 INFO L225 Difference]: With dead ends: 68 [2020-12-23 17:18:40,003 INFO L226 Difference]: Without dead ends: 68 [2020-12-23 17:18:40,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 17:18:40,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-23 17:18:40,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2020-12-23 17:18:40,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-23 17:18:40,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2020-12-23 17:18:40,015 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 7 [2020-12-23 17:18:40,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:40,016 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2020-12-23 17:18:40,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 17:18:40,016 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2020-12-23 17:18:40,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 17:18:40,017 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:40,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:40,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 17:18:40,018 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:40,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:40,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1807769773, now seen corresponding path program 1 times [2020-12-23 17:18:40,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:40,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193245639] [2020-12-23 17:18:40,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:40,180 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 17:18:40,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193245639] [2020-12-23 17:18:40,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:40,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:18:40,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840362436] [2020-12-23 17:18:40,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 17:18:40,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:40,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 17:18:40,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 17:18:40,184 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand 4 states. [2020-12-23 17:18:40,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:40,376 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2020-12-23 17:18:40,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 17:18:40,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-23 17:18:40,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:40,379 INFO L225 Difference]: With dead ends: 88 [2020-12-23 17:18:40,379 INFO L226 Difference]: Without dead ends: 88 [2020-12-23 17:18:40,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 17:18:40,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-23 17:18:40,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 77. [2020-12-23 17:18:40,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-23 17:18:40,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2020-12-23 17:18:40,389 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 7 [2020-12-23 17:18:40,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:40,389 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2020-12-23 17:18:40,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 17:18:40,390 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2020-12-23 17:18:40,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 17:18:40,391 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:40,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:40,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 17:18:40,392 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:40,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:40,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1014157433, now seen corresponding path program 1 times [2020-12-23 17:18:40,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:40,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415979034] [2020-12-23 17:18:40,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:40,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:40,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415979034] [2020-12-23 17:18:40,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:40,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 17:18:40,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439088517] [2020-12-23 17:18:40,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:18:40,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:40,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:18:40,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:18:40,556 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 6 states. [2020-12-23 17:18:40,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:40,768 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2020-12-23 17:18:40,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 17:18:40,769 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 17:18:40,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:40,771 INFO L225 Difference]: With dead ends: 116 [2020-12-23 17:18:40,771 INFO L226 Difference]: Without dead ends: 116 [2020-12-23 17:18:40,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:18:40,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-23 17:18:40,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 80. [2020-12-23 17:18:40,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-12-23 17:18:40,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2020-12-23 17:18:40,781 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 15 [2020-12-23 17:18:40,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:40,781 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2020-12-23 17:18:40,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:18:40,781 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2020-12-23 17:18:40,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 17:18:40,782 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:40,782 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:40,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 17:18:40,783 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:40,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:40,784 INFO L82 PathProgramCache]: Analyzing trace with hash -2016970849, now seen corresponding path program 1 times [2020-12-23 17:18:40,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:40,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056554558] [2020-12-23 17:18:40,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:40,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:40,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056554558] [2020-12-23 17:18:40,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:40,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 17:18:40,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151422104] [2020-12-23 17:18:40,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:18:40,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:40,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:18:40,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:18:40,859 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand 6 states. [2020-12-23 17:18:41,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:41,077 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2020-12-23 17:18:41,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 17:18:41,078 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 17:18:41,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:41,080 INFO L225 Difference]: With dead ends: 105 [2020-12-23 17:18:41,080 INFO L226 Difference]: Without dead ends: 105 [2020-12-23 17:18:41,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:18:41,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-12-23 17:18:41,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 83. [2020-12-23 17:18:41,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-23 17:18:41,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2020-12-23 17:18:41,088 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 15 [2020-12-23 17:18:41,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:41,089 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2020-12-23 17:18:41,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:18:41,089 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2020-12-23 17:18:41,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 17:18:41,090 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:41,090 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:41,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 17:18:41,091 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:41,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:41,092 INFO L82 PathProgramCache]: Analyzing trace with hash -2016970848, now seen corresponding path program 1 times [2020-12-23 17:18:41,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:41,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298776281] [2020-12-23 17:18:41,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:41,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:41,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298776281] [2020-12-23 17:18:41,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:41,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 17:18:41,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957250509] [2020-12-23 17:18:41,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:18:41,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:41,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:18:41,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:18:41,189 INFO L87 Difference]: Start difference. First operand 83 states and 94 transitions. Second operand 6 states. [2020-12-23 17:18:41,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:41,525 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2020-12-23 17:18:41,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 17:18:41,526 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 17:18:41,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:41,527 INFO L225 Difference]: With dead ends: 106 [2020-12-23 17:18:41,527 INFO L226 Difference]: Without dead ends: 106 [2020-12-23 17:18:41,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 17:18:41,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-23 17:18:41,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 74. [2020-12-23 17:18:41,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-23 17:18:41,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2020-12-23 17:18:41,535 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 15 [2020-12-23 17:18:41,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:41,535 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2020-12-23 17:18:41,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:18:41,535 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2020-12-23 17:18:41,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 17:18:41,536 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:41,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:41,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 17:18:41,537 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:41,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:41,538 INFO L82 PathProgramCache]: Analyzing trace with hash -399914149, now seen corresponding path program 1 times [2020-12-23 17:18:41,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:41,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325972738] [2020-12-23 17:18:41,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:41,599 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 17:18:41,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325972738] [2020-12-23 17:18:41,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:41,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 17:18:41,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140603913] [2020-12-23 17:18:41,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:18:41,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:41,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:18:41,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:18:41,603 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand 6 states. [2020-12-23 17:18:41,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:41,780 INFO L93 Difference]: Finished difference Result 118 states and 126 transitions. [2020-12-23 17:18:41,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 17:18:41,781 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-23 17:18:41,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:41,782 INFO L225 Difference]: With dead ends: 118 [2020-12-23 17:18:41,783 INFO L226 Difference]: Without dead ends: 118 [2020-12-23 17:18:41,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:18:41,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-12-23 17:18:41,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 78. [2020-12-23 17:18:41,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-23 17:18:41,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2020-12-23 17:18:41,790 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 17 [2020-12-23 17:18:41,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:41,790 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2020-12-23 17:18:41,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:18:41,791 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2020-12-23 17:18:41,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 17:18:41,792 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:41,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:41,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 17:18:41,793 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:41,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:41,793 INFO L82 PathProgramCache]: Analyzing trace with hash -399861594, now seen corresponding path program 1 times [2020-12-23 17:18:41,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:41,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492590076] [2020-12-23 17:18:41,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:41,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:18:41,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492590076] [2020-12-23 17:18:41,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:41,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 17:18:41,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824101732] [2020-12-23 17:18:41,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:18:41,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:41,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:18:41,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:18:41,892 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand 6 states. [2020-12-23 17:18:42,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:42,042 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2020-12-23 17:18:42,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 17:18:42,042 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-23 17:18:42,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:42,044 INFO L225 Difference]: With dead ends: 101 [2020-12-23 17:18:42,044 INFO L226 Difference]: Without dead ends: 101 [2020-12-23 17:18:42,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:18:42,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-23 17:18:42,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 78. [2020-12-23 17:18:42,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-23 17:18:42,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2020-12-23 17:18:42,050 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 17 [2020-12-23 17:18:42,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:42,051 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2020-12-23 17:18:42,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:18:42,051 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2020-12-23 17:18:42,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 17:18:42,052 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:42,052 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:42,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 17:18:42,053 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:42,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:42,054 INFO L82 PathProgramCache]: Analyzing trace with hash -695675823, now seen corresponding path program 1 times [2020-12-23 17:18:42,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:42,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318174771] [2020-12-23 17:18:42,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:42,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:42,138 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 17:18:42,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318174771] [2020-12-23 17:18:42,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:42,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 17:18:42,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626215282] [2020-12-23 17:18:42,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:18:42,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:42,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:18:42,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:18:42,150 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand 6 states. [2020-12-23 17:18:42,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:42,334 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2020-12-23 17:18:42,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 17:18:42,335 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-23 17:18:42,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:42,336 INFO L225 Difference]: With dead ends: 84 [2020-12-23 17:18:42,336 INFO L226 Difference]: Without dead ends: 84 [2020-12-23 17:18:42,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:18:42,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-23 17:18:42,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2020-12-23 17:18:42,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-23 17:18:42,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2020-12-23 17:18:42,341 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 17 [2020-12-23 17:18:42,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:42,342 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2020-12-23 17:18:42,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:18:42,342 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2020-12-23 17:18:42,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 17:18:42,343 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:42,343 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:42,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 17:18:42,344 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:42,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:42,345 INFO L82 PathProgramCache]: Analyzing trace with hash -695675822, now seen corresponding path program 1 times [2020-12-23 17:18:42,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:42,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365637976] [2020-12-23 17:18:42,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:18:42,436 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 17:18:42,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365637976] [2020-12-23 17:18:42,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:18:42,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 17:18:42,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394457013] [2020-12-23 17:18:42,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:18:42,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:18:42,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:18:42,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:18:42,439 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 6 states. [2020-12-23 17:18:42,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:18:42,732 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2020-12-23 17:18:42,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 17:18:42,733 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-23 17:18:42,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:18:42,734 INFO L225 Difference]: With dead ends: 81 [2020-12-23 17:18:42,735 INFO L226 Difference]: Without dead ends: 81 [2020-12-23 17:18:42,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 17:18:42,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-23 17:18:42,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 64. [2020-12-23 17:18:42,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-23 17:18:42,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2020-12-23 17:18:42,739 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 17 [2020-12-23 17:18:42,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:18:42,740 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2020-12-23 17:18:42,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:18:42,740 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2020-12-23 17:18:42,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 17:18:42,741 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:18:42,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:18:42,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 17:18:42,742 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-23 17:18:42,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:18:42,743 INFO L82 PathProgramCache]: Analyzing trace with hash 487568356, now seen corresponding path program 1 times [2020-12-23 17:18:42,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:18:42,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86278518] [2020-12-23 17:18:42,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:18:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 17:18:42,757 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 17:18:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 17:18:42,769 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 17:18:42,798 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 17:18:42,799 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 17:18:42,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 17:18:42,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 05:18:42 BoogieIcfgContainer [2020-12-23 17:18:42,839 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 17:18:42,840 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 17:18:42,840 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 17:18:42,840 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 17:18:42,841 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:18:39" (3/4) ... [2020-12-23 17:18:42,845 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 17:18:42,846 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 17:18:42,850 INFO L168 Benchmark]: Toolchain (without parser) took 5292.82 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 126.3 MB in the beginning and 86.3 MB in the end (delta: 40.1 MB). Peak memory consumption was 71.1 MB. Max. memory is 8.0 GB. [2020-12-23 17:18:42,850 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 152.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 17:18:42,853 INFO L168 Benchmark]: CACSL2BoogieTranslator took 772.03 ms. Allocated memory is still 152.0 MB. Free memory was 126.1 MB in the beginning and 104.1 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-23 17:18:42,858 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.69 ms. Allocated memory is still 152.0 MB. Free memory was 104.1 MB in the beginning and 134.8 MB in the end (delta: -30.7 MB). Peak memory consumption was 5.0 MB. Max. memory is 8.0 GB. [2020-12-23 17:18:42,861 INFO L168 Benchmark]: Boogie Preprocessor took 40.31 ms. Allocated memory is still 152.0 MB. Free memory was 134.8 MB in the beginning and 133.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 17:18:42,861 INFO L168 Benchmark]: RCFGBuilder took 731.91 ms. Allocated memory is still 152.0 MB. Free memory was 133.0 MB in the beginning and 107.8 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2020-12-23 17:18:42,869 INFO L168 Benchmark]: TraceAbstraction took 3659.21 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 107.3 MB in the beginning and 86.8 MB in the end (delta: 20.5 MB). Peak memory consumption was 52.5 MB. Max. memory is 8.0 GB. [2020-12-23 17:18:42,871 INFO L168 Benchmark]: Witness Printer took 6.17 ms. Allocated memory is still 182.5 MB. Free memory was 86.8 MB in the beginning and 86.3 MB in the end (delta: 519.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 17:18:42,878 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 152.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 772.03 ms. Allocated memory is still 152.0 MB. Free memory was 126.1 MB in the beginning and 104.1 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 71.69 ms. Allocated memory is still 152.0 MB. Free memory was 104.1 MB in the beginning and 134.8 MB in the end (delta: -30.7 MB). Peak memory consumption was 5.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.31 ms. Allocated memory is still 152.0 MB. Free memory was 134.8 MB in the beginning and 133.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 731.91 ms. Allocated memory is still 152.0 MB. Free memory was 133.0 MB in the beginning and 107.8 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3659.21 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 107.3 MB in the beginning and 86.8 MB in the end (delta: 20.5 MB). Peak memory consumption was 52.5 MB. Max. memory is 8.0 GB. * Witness Printer took 6.17 ms. Allocated memory is still 182.5 MB. Free memory was 86.8 MB in the beginning and 86.3 MB in the end (delta: 519.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) [L534] List t; [L535] List p = a; [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 [L551] p = a [L552] EXPR p->h [L552] COND FALSE !(p->h == 1) [L554] EXPR p->h [L554] COND FALSE !(p->h == 2) [L556] EXPR p->h [L556] COND FALSE !(p->h != 3) [L558] return 0; - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 66 locations, 26 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.5s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 440 SDtfs, 687 SDslu, 796 SDs, 0 SdLazy, 1132 SolverSat, 107 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 194 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 7740 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 12/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...