/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/locks/test_locks_10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 17:35:19,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 17:35:19,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 17:35:19,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 17:35:19,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 17:35:19,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 17:35:19,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 17:35:19,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 17:35:19,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 17:35:19,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 17:35:19,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 17:35:19,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 17:35:19,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 17:35:19,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 17:35:19,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 17:35:19,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 17:35:19,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 17:35:19,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 17:35:19,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 17:35:19,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 17:35:19,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 17:35:19,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 17:35:19,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 17:35:19,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 17:35:19,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 17:35:19,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 17:35:19,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 17:35:19,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 17:35:19,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 17:35:19,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 17:35:19,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 17:35:19,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 17:35:19,829 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 17:35:19,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 17:35:19,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 17:35:19,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 17:35:19,833 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 17:35:19,912 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 17:35:19,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 17:35:19,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 17:35:19,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 17:35:19,918 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 17:35:19,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 17:35:19,919 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 17:35:19,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 17:35:19,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 17:35:19,919 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 17:35:19,920 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 17:35:19,921 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 17:35:19,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 17:35:19,921 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 17:35:19,921 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 17:35:19,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 17:35:19,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 17:35:19,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 17:35:19,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 17:35:19,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 17:35:19,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 17:35:19,923 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 17:35:19,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 17:35:19,923 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 17:35:19,923 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 17:35:20,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 17:35:20,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 17:35:20,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 17:35:20,503 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 17:35:20,505 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 17:35:20,506 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_10.c [2020-12-23 17:35:20,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f3f34ff16/a08f54cc40df4cc79bec6b60eee600ed/FLAG5832c3d99 [2020-12-23 17:35:21,384 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 17:35:21,385 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/locks/test_locks_10.c [2020-12-23 17:35:21,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f3f34ff16/a08f54cc40df4cc79bec6b60eee600ed/FLAG5832c3d99 [2020-12-23 17:35:21,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f3f34ff16/a08f54cc40df4cc79bec6b60eee600ed [2020-12-23 17:35:21,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 17:35:21,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 17:35:21,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 17:35:21,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 17:35:21,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 17:35:21,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:35:21" (1/1) ... [2020-12-23 17:35:21,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a75b387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:21, skipping insertion in model container [2020-12-23 17:35:21,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:35:21" (1/1) ... [2020-12-23 17:35:21,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 17:35:21,785 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~cond~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] left hand side expression in assignment: lhs: VariableLHS[~lk9~0,] left hand side expression in assignment: lhs: VariableLHS[~lk10~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] left hand side expression in assignment: lhs: VariableLHS[~lk9~0,] left hand side expression in assignment: lhs: VariableLHS[~lk10~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] left hand side expression in assignment: lhs: VariableLHS[~lk9~0,] left hand side expression in assignment: lhs: VariableLHS[~lk10~0,] [2020-12-23 17:35:22,005 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/locks/test_locks_10.c[3901,3914] [2020-12-23 17:35:22,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:35:22,025 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~cond~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] left hand side expression in assignment: lhs: VariableLHS[~lk9~0,] left hand side expression in assignment: lhs: VariableLHS[~lk10~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] left hand side expression in assignment: lhs: VariableLHS[~lk9~0,] left hand side expression in assignment: lhs: VariableLHS[~lk10~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] left hand side expression in assignment: lhs: VariableLHS[~lk9~0,] left hand side expression in assignment: lhs: VariableLHS[~lk10~0,] [2020-12-23 17:35:22,061 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/locks/test_locks_10.c[3901,3914] [2020-12-23 17:35:22,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:35:22,081 INFO L208 MainTranslator]: Completed translation [2020-12-23 17:35:22,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:22 WrapperNode [2020-12-23 17:35:22,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 17:35:22,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 17:35:22,084 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 17:35:22,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 17:35:22,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:22" (1/1) ... [2020-12-23 17:35:22,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:22" (1/1) ... [2020-12-23 17:35:22,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 17:35:22,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 17:35:22,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 17:35:22,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 17:35:22,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:22" (1/1) ... [2020-12-23 17:35:22,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:22" (1/1) ... [2020-12-23 17:35:22,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:22" (1/1) ... [2020-12-23 17:35:22,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:22" (1/1) ... [2020-12-23 17:35:22,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:22" (1/1) ... [2020-12-23 17:35:22,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:22" (1/1) ... [2020-12-23 17:35:22,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:22" (1/1) ... [2020-12-23 17:35:22,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 17:35:22,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 17:35:22,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 17:35:22,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 17:35:22,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:22" (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 17:35:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 17:35:22,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 17:35:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 17:35:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 17:35:22,730 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 17:35:22,731 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-23 17:35:22,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:35:22 BoogieIcfgContainer [2020-12-23 17:35:22,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 17:35:22,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 17:35:22,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 17:35:22,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 17:35:22,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 05:35:21" (1/3) ... [2020-12-23 17:35:22,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bcc2938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:35:22, skipping insertion in model container [2020-12-23 17:35:22,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:22" (2/3) ... [2020-12-23 17:35:22,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bcc2938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:35:22, skipping insertion in model container [2020-12-23 17:35:22,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:35:22" (3/3) ... [2020-12-23 17:35:22,750 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_10.c [2020-12-23 17:35:22,760 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 17:35:22,768 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 17:35:22,800 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-23 17:35:22,843 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 17:35:22,844 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 17:35:22,844 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 17:35:22,844 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 17:35:22,844 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 17:35:22,845 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 17:35:22,845 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 17:35:22,848 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 17:35:22,885 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-23 17:35:22,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-23 17:35:22,896 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:22,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-23 17:35:22,899 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:22,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:22,908 INFO L82 PathProgramCache]: Analyzing trace with hash 28703467, now seen corresponding path program 1 times [2020-12-23 17:35:22,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:22,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342073887] [2020-12-23 17:35:22,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:23,186 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 17:35:23,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342073887] [2020-12-23 17:35:23,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:23,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:35:23,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297347421] [2020-12-23 17:35:23,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 17:35:23,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:23,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 17:35:23,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 17:35:23,222 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-23 17:35:23,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:23,243 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-12-23 17:35:23,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 17:35:23,246 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-23 17:35:23,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:23,261 INFO L225 Difference]: With dead ends: 41 [2020-12-23 17:35:23,262 INFO L226 Difference]: Without dead ends: 39 [2020-12-23 17:35:23,265 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 17:35:23,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-23 17:35:23,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-23 17:35:23,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-23 17:35:23,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 68 transitions. [2020-12-23 17:35:23,320 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 68 transitions. Word has length 5 [2020-12-23 17:35:23,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:23,321 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 68 transitions. [2020-12-23 17:35:23,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 17:35:23,321 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 68 transitions. [2020-12-23 17:35:23,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 17:35:23,322 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:23,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 17:35:23,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 17:35:23,323 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:23,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:23,324 INFO L82 PathProgramCache]: Analyzing trace with hash 889697963, now seen corresponding path program 1 times [2020-12-23 17:35:23,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:23,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349304697] [2020-12-23 17:35:23,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:23,444 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 17:35:23,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349304697] [2020-12-23 17:35:23,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:23,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:35:23,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564575132] [2020-12-23 17:35:23,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:23,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:23,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:23,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:23,454 INFO L87 Difference]: Start difference. First operand 39 states and 68 transitions. Second operand 3 states. [2020-12-23 17:35:23,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:23,492 INFO L93 Difference]: Finished difference Result 38 states and 67 transitions. [2020-12-23 17:35:23,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:23,494 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-23 17:35:23,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:23,497 INFO L225 Difference]: With dead ends: 38 [2020-12-23 17:35:23,497 INFO L226 Difference]: Without dead ends: 36 [2020-12-23 17:35:23,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 17:35:23,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-23 17:35:23,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-12-23 17:35:23,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-23 17:35:23,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 65 transitions. [2020-12-23 17:35:23,516 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 65 transitions. Word has length 6 [2020-12-23 17:35:23,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:23,517 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 65 transitions. [2020-12-23 17:35:23,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:23,517 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 65 transitions. [2020-12-23 17:35:23,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 17:35:23,518 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:23,518 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 17:35:23,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 17:35:23,519 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:23,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:23,520 INFO L82 PathProgramCache]: Analyzing trace with hash 153349273, now seen corresponding path program 1 times [2020-12-23 17:35:23,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:23,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884172234] [2020-12-23 17:35:23,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:23,585 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 17:35:23,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884172234] [2020-12-23 17:35:23,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:23,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:23,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735654011] [2020-12-23 17:35:23,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:23,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:23,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:23,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:23,589 INFO L87 Difference]: Start difference. First operand 36 states and 65 transitions. Second operand 3 states. [2020-12-23 17:35:23,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:23,638 INFO L93 Difference]: Finished difference Result 69 states and 125 transitions. [2020-12-23 17:35:23,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:23,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-23 17:35:23,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:23,647 INFO L225 Difference]: With dead ends: 69 [2020-12-23 17:35:23,648 INFO L226 Difference]: Without dead ends: 69 [2020-12-23 17:35:23,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:23,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-23 17:35:23,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 47. [2020-12-23 17:35:23,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-23 17:35:23,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 86 transitions. [2020-12-23 17:35:23,676 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 86 transitions. Word has length 17 [2020-12-23 17:35:23,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:23,677 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 86 transitions. [2020-12-23 17:35:23,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:23,680 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 86 transitions. [2020-12-23 17:35:23,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 17:35:23,682 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:23,682 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 17:35:23,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 17:35:23,683 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:23,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:23,685 INFO L82 PathProgramCache]: Analyzing trace with hash -433456741, now seen corresponding path program 1 times [2020-12-23 17:35:23,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:23,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303214969] [2020-12-23 17:35:23,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:23,829 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 17:35:23,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303214969] [2020-12-23 17:35:23,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:23,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:23,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296321704] [2020-12-23 17:35:23,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:23,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:23,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:23,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:23,837 INFO L87 Difference]: Start difference. First operand 47 states and 86 transitions. Second operand 3 states. [2020-12-23 17:35:23,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:23,866 INFO L93 Difference]: Finished difference Result 69 states and 123 transitions. [2020-12-23 17:35:23,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:23,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-23 17:35:23,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:23,869 INFO L225 Difference]: With dead ends: 69 [2020-12-23 17:35:23,869 INFO L226 Difference]: Without dead ends: 69 [2020-12-23 17:35:23,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:23,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-23 17:35:23,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2020-12-23 17:35:23,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-23 17:35:23,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 122 transitions. [2020-12-23 17:35:23,878 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 122 transitions. Word has length 17 [2020-12-23 17:35:23,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:23,879 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 122 transitions. [2020-12-23 17:35:23,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:23,879 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 122 transitions. [2020-12-23 17:35:23,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 17:35:23,880 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:23,880 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 17:35:23,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 17:35:23,881 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:23,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:23,882 INFO L82 PathProgramCache]: Analyzing trace with hash 459073515, now seen corresponding path program 1 times [2020-12-23 17:35:23,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:23,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690928260] [2020-12-23 17:35:23,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:23,932 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 17:35:23,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690928260] [2020-12-23 17:35:23,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:23,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:23,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359228946] [2020-12-23 17:35:23,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:23,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:23,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:23,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:23,935 INFO L87 Difference]: Start difference. First operand 67 states and 122 transitions. Second operand 3 states. [2020-12-23 17:35:23,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:23,956 INFO L93 Difference]: Finished difference Result 72 states and 125 transitions. [2020-12-23 17:35:23,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:23,957 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-23 17:35:23,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:23,958 INFO L225 Difference]: With dead ends: 72 [2020-12-23 17:35:23,958 INFO L226 Difference]: Without dead ends: 72 [2020-12-23 17:35:23,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:23,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-23 17:35:23,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-12-23 17:35:23,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-23 17:35:23,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 124 transitions. [2020-12-23 17:35:23,968 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 124 transitions. Word has length 18 [2020-12-23 17:35:23,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:23,968 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 124 transitions. [2020-12-23 17:35:23,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:23,969 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 124 transitions. [2020-12-23 17:35:23,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 17:35:23,970 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:23,970 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 17:35:23,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 17:35:23,971 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:23,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:23,972 INFO L82 PathProgramCache]: Analyzing trace with hash -552043735, now seen corresponding path program 1 times [2020-12-23 17:35:23,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:23,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238315593] [2020-12-23 17:35:23,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:24,062 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 17:35:24,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238315593] [2020-12-23 17:35:24,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:24,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:24,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872250762] [2020-12-23 17:35:24,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:24,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:24,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:24,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:24,066 INFO L87 Difference]: Start difference. First operand 70 states and 124 transitions. Second operand 3 states. [2020-12-23 17:35:24,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:24,102 INFO L93 Difference]: Finished difference Result 131 states and 234 transitions. [2020-12-23 17:35:24,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:24,103 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-23 17:35:24,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:24,104 INFO L225 Difference]: With dead ends: 131 [2020-12-23 17:35:24,105 INFO L226 Difference]: Without dead ends: 131 [2020-12-23 17:35:24,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:24,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-23 17:35:24,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 93. [2020-12-23 17:35:24,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-23 17:35:24,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 165 transitions. [2020-12-23 17:35:24,129 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 165 transitions. Word has length 18 [2020-12-23 17:35:24,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:24,130 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 165 transitions. [2020-12-23 17:35:24,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:24,130 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 165 transitions. [2020-12-23 17:35:24,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 17:35:24,135 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:24,135 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 17:35:24,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 17:35:24,136 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:24,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:24,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1138849749, now seen corresponding path program 1 times [2020-12-23 17:35:24,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:24,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184493977] [2020-12-23 17:35:24,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:24,193 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 17:35:24,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184493977] [2020-12-23 17:35:24,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:24,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:24,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952772611] [2020-12-23 17:35:24,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:24,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:24,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:24,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:24,197 INFO L87 Difference]: Start difference. First operand 93 states and 165 transitions. Second operand 3 states. [2020-12-23 17:35:24,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:24,214 INFO L93 Difference]: Finished difference Result 133 states and 232 transitions. [2020-12-23 17:35:24,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:24,215 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-23 17:35:24,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:24,217 INFO L225 Difference]: With dead ends: 133 [2020-12-23 17:35:24,217 INFO L226 Difference]: Without dead ends: 133 [2020-12-23 17:35:24,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:24,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-12-23 17:35:24,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2020-12-23 17:35:24,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-12-23 17:35:24,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 231 transitions. [2020-12-23 17:35:24,231 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 231 transitions. Word has length 18 [2020-12-23 17:35:24,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:24,231 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 231 transitions. [2020-12-23 17:35:24,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:24,232 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 231 transitions. [2020-12-23 17:35:24,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 17:35:24,233 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:24,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:24,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 17:35:24,234 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:24,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:24,235 INFO L82 PathProgramCache]: Analyzing trace with hash 66727088, now seen corresponding path program 1 times [2020-12-23 17:35:24,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:24,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143749104] [2020-12-23 17:35:24,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:24,269 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 17:35:24,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143749104] [2020-12-23 17:35:24,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:24,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:24,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868927952] [2020-12-23 17:35:24,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:24,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:24,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:24,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:24,273 INFO L87 Difference]: Start difference. First operand 131 states and 231 transitions. Second operand 3 states. [2020-12-23 17:35:24,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:24,288 INFO L93 Difference]: Finished difference Result 135 states and 232 transitions. [2020-12-23 17:35:24,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:24,289 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-23 17:35:24,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:24,290 INFO L225 Difference]: With dead ends: 135 [2020-12-23 17:35:24,290 INFO L226 Difference]: Without dead ends: 135 [2020-12-23 17:35:24,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:24,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-12-23 17:35:24,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2020-12-23 17:35:24,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-12-23 17:35:24,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 231 transitions. [2020-12-23 17:35:24,309 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 231 transitions. Word has length 19 [2020-12-23 17:35:24,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:24,313 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 231 transitions. [2020-12-23 17:35:24,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:24,313 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 231 transitions. [2020-12-23 17:35:24,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 17:35:24,314 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:24,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:24,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 17:35:24,319 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:24,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:24,320 INFO L82 PathProgramCache]: Analyzing trace with hash -944390162, now seen corresponding path program 1 times [2020-12-23 17:35:24,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:24,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824734071] [2020-12-23 17:35:24,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:24,392 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 17:35:24,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824734071] [2020-12-23 17:35:24,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:24,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:24,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913242786] [2020-12-23 17:35:24,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:24,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:24,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:24,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:24,398 INFO L87 Difference]: Start difference. First operand 133 states and 231 transitions. Second operand 3 states. [2020-12-23 17:35:24,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:24,430 INFO L93 Difference]: Finished difference Result 255 states and 436 transitions. [2020-12-23 17:35:24,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:24,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-23 17:35:24,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:24,434 INFO L225 Difference]: With dead ends: 255 [2020-12-23 17:35:24,434 INFO L226 Difference]: Without dead ends: 255 [2020-12-23 17:35:24,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:24,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-12-23 17:35:24,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 253. [2020-12-23 17:35:24,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-12-23 17:35:24,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 435 transitions. [2020-12-23 17:35:24,493 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 435 transitions. Word has length 19 [2020-12-23 17:35:24,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:24,497 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 435 transitions. [2020-12-23 17:35:24,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:24,498 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 435 transitions. [2020-12-23 17:35:24,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 17:35:24,500 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:24,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:24,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 17:35:24,503 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:24,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:24,505 INFO L82 PathProgramCache]: Analyzing trace with hash -357584148, now seen corresponding path program 1 times [2020-12-23 17:35:24,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:24,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246440388] [2020-12-23 17:35:24,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:24,577 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 17:35:24,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246440388] [2020-12-23 17:35:24,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:24,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:24,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265970027] [2020-12-23 17:35:24,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:24,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:24,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:24,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:24,583 INFO L87 Difference]: Start difference. First operand 253 states and 435 transitions. Second operand 3 states. [2020-12-23 17:35:24,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:24,611 INFO L93 Difference]: Finished difference Result 319 states and 552 transitions. [2020-12-23 17:35:24,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:24,616 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-23 17:35:24,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:24,621 INFO L225 Difference]: With dead ends: 319 [2020-12-23 17:35:24,621 INFO L226 Difference]: Without dead ends: 319 [2020-12-23 17:35:24,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:24,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-12-23 17:35:24,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 253. [2020-12-23 17:35:24,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-12-23 17:35:24,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 431 transitions. [2020-12-23 17:35:24,645 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 431 transitions. Word has length 19 [2020-12-23 17:35:24,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:24,646 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 431 transitions. [2020-12-23 17:35:24,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:24,646 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 431 transitions. [2020-12-23 17:35:24,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 17:35:24,651 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:24,653 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] [2020-12-23 17:35:24,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 17:35:24,653 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:24,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:24,654 INFO L82 PathProgramCache]: Analyzing trace with hash 788890080, now seen corresponding path program 1 times [2020-12-23 17:35:24,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:24,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52703628] [2020-12-23 17:35:24,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:24,723 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 17:35:24,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52703628] [2020-12-23 17:35:24,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:24,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:24,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944059244] [2020-12-23 17:35:24,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:24,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:24,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:24,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:24,731 INFO L87 Difference]: Start difference. First operand 253 states and 431 transitions. Second operand 3 states. [2020-12-23 17:35:24,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:24,750 INFO L93 Difference]: Finished difference Result 467 states and 800 transitions. [2020-12-23 17:35:24,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:24,752 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-23 17:35:24,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:24,756 INFO L225 Difference]: With dead ends: 467 [2020-12-23 17:35:24,756 INFO L226 Difference]: Without dead ends: 467 [2020-12-23 17:35:24,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:24,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2020-12-23 17:35:24,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 353. [2020-12-23 17:35:24,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-12-23 17:35:24,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 591 transitions. [2020-12-23 17:35:24,773 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 591 transitions. Word has length 20 [2020-12-23 17:35:24,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:24,773 INFO L481 AbstractCegarLoop]: Abstraction has 353 states and 591 transitions. [2020-12-23 17:35:24,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:24,773 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 591 transitions. [2020-12-23 17:35:24,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 17:35:24,775 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:24,776 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] [2020-12-23 17:35:24,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 17:35:24,776 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:24,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:24,778 INFO L82 PathProgramCache]: Analyzing trace with hash 202084066, now seen corresponding path program 1 times [2020-12-23 17:35:24,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:24,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030051345] [2020-12-23 17:35:24,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:24,843 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 17:35:24,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030051345] [2020-12-23 17:35:24,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:24,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:24,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366063720] [2020-12-23 17:35:24,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:24,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:24,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:24,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:24,846 INFO L87 Difference]: Start difference. First operand 353 states and 591 transitions. Second operand 3 states. [2020-12-23 17:35:24,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:24,863 INFO L93 Difference]: Finished difference Result 491 states and 812 transitions. [2020-12-23 17:35:24,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:24,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-23 17:35:24,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:24,868 INFO L225 Difference]: With dead ends: 491 [2020-12-23 17:35:24,868 INFO L226 Difference]: Without dead ends: 491 [2020-12-23 17:35:24,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:24,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-12-23 17:35:24,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 489. [2020-12-23 17:35:24,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-12-23 17:35:24,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 811 transitions. [2020-12-23 17:35:24,887 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 811 transitions. Word has length 20 [2020-12-23 17:35:24,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:24,887 INFO L481 AbstractCegarLoop]: Abstraction has 489 states and 811 transitions. [2020-12-23 17:35:24,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:24,887 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 811 transitions. [2020-12-23 17:35:24,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 17:35:24,889 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:24,889 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] [2020-12-23 17:35:24,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 17:35:24,890 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:24,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:24,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1313996925, now seen corresponding path program 1 times [2020-12-23 17:35:24,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:24,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299917308] [2020-12-23 17:35:24,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:24,919 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 17:35:24,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299917308] [2020-12-23 17:35:24,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:24,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:24,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733053112] [2020-12-23 17:35:24,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:24,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:24,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:24,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:24,923 INFO L87 Difference]: Start difference. First operand 489 states and 811 transitions. Second operand 3 states. [2020-12-23 17:35:24,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:24,939 INFO L93 Difference]: Finished difference Result 503 states and 820 transitions. [2020-12-23 17:35:24,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:24,940 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-23 17:35:24,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:24,946 INFO L225 Difference]: With dead ends: 503 [2020-12-23 17:35:24,947 INFO L226 Difference]: Without dead ends: 503 [2020-12-23 17:35:24,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:24,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2020-12-23 17:35:24,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 501. [2020-12-23 17:35:24,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2020-12-23 17:35:24,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 819 transitions. [2020-12-23 17:35:24,965 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 819 transitions. Word has length 21 [2020-12-23 17:35:24,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:24,966 INFO L481 AbstractCegarLoop]: Abstraction has 501 states and 819 transitions. [2020-12-23 17:35:24,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:24,966 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 819 transitions. [2020-12-23 17:35:24,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 17:35:24,967 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:24,968 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] [2020-12-23 17:35:24,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 17:35:24,968 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:24,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:24,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1969853121, now seen corresponding path program 1 times [2020-12-23 17:35:24,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:24,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046094145] [2020-12-23 17:35:24,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:24,996 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 17:35:24,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046094145] [2020-12-23 17:35:24,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:24,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:24,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913019471] [2020-12-23 17:35:24,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:24,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:24,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:24,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:25,000 INFO L87 Difference]: Start difference. First operand 501 states and 819 transitions. Second operand 3 states. [2020-12-23 17:35:25,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:25,018 INFO L93 Difference]: Finished difference Result 903 states and 1484 transitions. [2020-12-23 17:35:25,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:25,018 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-23 17:35:25,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:25,025 INFO L225 Difference]: With dead ends: 903 [2020-12-23 17:35:25,025 INFO L226 Difference]: Without dead ends: 903 [2020-12-23 17:35:25,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:25,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2020-12-23 17:35:25,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 709. [2020-12-23 17:35:25,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2020-12-23 17:35:25,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1131 transitions. [2020-12-23 17:35:25,052 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1131 transitions. Word has length 21 [2020-12-23 17:35:25,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:25,052 INFO L481 AbstractCegarLoop]: Abstraction has 709 states and 1131 transitions. [2020-12-23 17:35:25,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:25,052 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1131 transitions. [2020-12-23 17:35:25,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 17:35:25,054 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:25,054 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] [2020-12-23 17:35:25,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 17:35:25,055 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:25,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:25,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1383047107, now seen corresponding path program 1 times [2020-12-23 17:35:25,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:25,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116000174] [2020-12-23 17:35:25,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:25,086 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 17:35:25,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116000174] [2020-12-23 17:35:25,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:25,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:25,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862846048] [2020-12-23 17:35:25,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:25,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:25,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:25,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:25,089 INFO L87 Difference]: Start difference. First operand 709 states and 1131 transitions. Second operand 3 states. [2020-12-23 17:35:25,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:25,108 INFO L93 Difference]: Finished difference Result 967 states and 1524 transitions. [2020-12-23 17:35:25,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:25,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-23 17:35:25,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:25,114 INFO L225 Difference]: With dead ends: 967 [2020-12-23 17:35:25,114 INFO L226 Difference]: Without dead ends: 967 [2020-12-23 17:35:25,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:25,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2020-12-23 17:35:25,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 965. [2020-12-23 17:35:25,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2020-12-23 17:35:25,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1523 transitions. [2020-12-23 17:35:25,143 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1523 transitions. Word has length 21 [2020-12-23 17:35:25,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:25,143 INFO L481 AbstractCegarLoop]: Abstraction has 965 states and 1523 transitions. [2020-12-23 17:35:25,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:25,144 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1523 transitions. [2020-12-23 17:35:25,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 17:35:25,146 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:25,146 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] [2020-12-23 17:35:25,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 17:35:25,146 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:25,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:25,147 INFO L82 PathProgramCache]: Analyzing trace with hash 936119319, now seen corresponding path program 1 times [2020-12-23 17:35:25,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:25,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590566002] [2020-12-23 17:35:25,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:25,169 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 17:35:25,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590566002] [2020-12-23 17:35:25,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:25,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:25,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189786236] [2020-12-23 17:35:25,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:25,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:25,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:25,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:25,172 INFO L87 Difference]: Start difference. First operand 965 states and 1523 transitions. Second operand 3 states. [2020-12-23 17:35:25,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:25,189 INFO L93 Difference]: Finished difference Result 983 states and 1524 transitions. [2020-12-23 17:35:25,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:25,190 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-23 17:35:25,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:25,196 INFO L225 Difference]: With dead ends: 983 [2020-12-23 17:35:25,196 INFO L226 Difference]: Without dead ends: 983 [2020-12-23 17:35:25,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:25,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2020-12-23 17:35:25,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 981. [2020-12-23 17:35:25,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 981 states. [2020-12-23 17:35:25,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1523 transitions. [2020-12-23 17:35:25,225 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1523 transitions. Word has length 22 [2020-12-23 17:35:25,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:25,225 INFO L481 AbstractCegarLoop]: Abstraction has 981 states and 1523 transitions. [2020-12-23 17:35:25,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:25,226 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1523 transitions. [2020-12-23 17:35:25,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 17:35:25,227 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:25,227 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] [2020-12-23 17:35:25,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 17:35:25,228 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:25,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:25,229 INFO L82 PathProgramCache]: Analyzing trace with hash -74997931, now seen corresponding path program 1 times [2020-12-23 17:35:25,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:25,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58429143] [2020-12-23 17:35:25,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:25,277 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 17:35:25,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58429143] [2020-12-23 17:35:25,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:25,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:25,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320063252] [2020-12-23 17:35:25,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:25,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:25,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:25,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:25,280 INFO L87 Difference]: Start difference. First operand 981 states and 1523 transitions. Second operand 3 states. [2020-12-23 17:35:25,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:25,301 INFO L93 Difference]: Finished difference Result 1735 states and 2708 transitions. [2020-12-23 17:35:25,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:25,301 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-23 17:35:25,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:25,311 INFO L225 Difference]: With dead ends: 1735 [2020-12-23 17:35:25,312 INFO L226 Difference]: Without dead ends: 1735 [2020-12-23 17:35:25,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:25,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2020-12-23 17:35:25,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1413. [2020-12-23 17:35:25,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1413 states. [2020-12-23 17:35:25,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 2131 transitions. [2020-12-23 17:35:25,352 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 2131 transitions. Word has length 22 [2020-12-23 17:35:25,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:25,354 INFO L481 AbstractCegarLoop]: Abstraction has 1413 states and 2131 transitions. [2020-12-23 17:35:25,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:25,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 2131 transitions. [2020-12-23 17:35:25,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 17:35:25,357 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:25,357 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] [2020-12-23 17:35:25,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 17:35:25,358 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:25,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:25,359 INFO L82 PathProgramCache]: Analyzing trace with hash -661803945, now seen corresponding path program 1 times [2020-12-23 17:35:25,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:25,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361446773] [2020-12-23 17:35:25,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:25,389 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 17:35:25,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361446773] [2020-12-23 17:35:25,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:25,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:25,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374420226] [2020-12-23 17:35:25,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:25,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:25,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:25,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:25,402 INFO L87 Difference]: Start difference. First operand 1413 states and 2131 transitions. Second operand 3 states. [2020-12-23 17:35:25,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:25,425 INFO L93 Difference]: Finished difference Result 1895 states and 2820 transitions. [2020-12-23 17:35:25,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:25,425 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-23 17:35:25,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:25,436 INFO L225 Difference]: With dead ends: 1895 [2020-12-23 17:35:25,436 INFO L226 Difference]: Without dead ends: 1895 [2020-12-23 17:35:25,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:25,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2020-12-23 17:35:25,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1893. [2020-12-23 17:35:25,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1893 states. [2020-12-23 17:35:25,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 2819 transitions. [2020-12-23 17:35:25,503 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 2819 transitions. Word has length 22 [2020-12-23 17:35:25,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:25,503 INFO L481 AbstractCegarLoop]: Abstraction has 1893 states and 2819 transitions. [2020-12-23 17:35:25,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:25,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 2819 transitions. [2020-12-23 17:35:25,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 17:35:25,506 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:25,506 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] [2020-12-23 17:35:25,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 17:35:25,507 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:25,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:25,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1970246488, now seen corresponding path program 1 times [2020-12-23 17:35:25,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:25,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634361241] [2020-12-23 17:35:25,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:25,535 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 17:35:25,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634361241] [2020-12-23 17:35:25,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:25,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:25,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138405814] [2020-12-23 17:35:25,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:25,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:25,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:25,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:25,540 INFO L87 Difference]: Start difference. First operand 1893 states and 2819 transitions. Second operand 3 states. [2020-12-23 17:35:25,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:25,563 INFO L93 Difference]: Finished difference Result 1927 states and 2820 transitions. [2020-12-23 17:35:25,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:25,564 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-23 17:35:25,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:25,574 INFO L225 Difference]: With dead ends: 1927 [2020-12-23 17:35:25,574 INFO L226 Difference]: Without dead ends: 1927 [2020-12-23 17:35:25,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:25,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2020-12-23 17:35:25,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1925. [2020-12-23 17:35:25,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1925 states. [2020-12-23 17:35:25,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 2819 transitions. [2020-12-23 17:35:25,634 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 2819 transitions. Word has length 23 [2020-12-23 17:35:25,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:25,634 INFO L481 AbstractCegarLoop]: Abstraction has 1925 states and 2819 transitions. [2020-12-23 17:35:25,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:25,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 2819 transitions. [2020-12-23 17:35:25,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 17:35:25,638 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:25,638 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] [2020-12-23 17:35:25,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 17:35:25,639 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:25,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:25,640 INFO L82 PathProgramCache]: Analyzing trace with hash 959129238, now seen corresponding path program 1 times [2020-12-23 17:35:25,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:25,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757599258] [2020-12-23 17:35:25,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:25,661 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 17:35:25,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757599258] [2020-12-23 17:35:25,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:25,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:25,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144322028] [2020-12-23 17:35:25,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:25,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:25,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:25,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:25,664 INFO L87 Difference]: Start difference. First operand 1925 states and 2819 transitions. Second operand 3 states. [2020-12-23 17:35:25,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:25,692 INFO L93 Difference]: Finished difference Result 3335 states and 4900 transitions. [2020-12-23 17:35:25,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:25,693 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-23 17:35:25,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:25,711 INFO L225 Difference]: With dead ends: 3335 [2020-12-23 17:35:25,712 INFO L226 Difference]: Without dead ends: 3335 [2020-12-23 17:35:25,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:25,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3335 states. [2020-12-23 17:35:25,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3335 to 2821. [2020-12-23 17:35:25,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2821 states. [2020-12-23 17:35:25,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 4003 transitions. [2020-12-23 17:35:25,792 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 4003 transitions. Word has length 23 [2020-12-23 17:35:25,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:25,792 INFO L481 AbstractCegarLoop]: Abstraction has 2821 states and 4003 transitions. [2020-12-23 17:35:25,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:25,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 4003 transitions. [2020-12-23 17:35:25,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 17:35:25,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:25,798 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] [2020-12-23 17:35:25,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 17:35:25,798 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:25,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:25,799 INFO L82 PathProgramCache]: Analyzing trace with hash 372323224, now seen corresponding path program 1 times [2020-12-23 17:35:25,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:25,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780218472] [2020-12-23 17:35:25,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:25,820 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 17:35:25,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780218472] [2020-12-23 17:35:25,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:25,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:25,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889542588] [2020-12-23 17:35:25,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:25,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:25,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:25,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:25,823 INFO L87 Difference]: Start difference. First operand 2821 states and 4003 transitions. Second operand 3 states. [2020-12-23 17:35:25,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:25,876 INFO L93 Difference]: Finished difference Result 3719 states and 5188 transitions. [2020-12-23 17:35:25,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:25,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-23 17:35:25,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:25,896 INFO L225 Difference]: With dead ends: 3719 [2020-12-23 17:35:25,896 INFO L226 Difference]: Without dead ends: 3719 [2020-12-23 17:35:25,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:25,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3719 states. [2020-12-23 17:35:25,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3719 to 3717. [2020-12-23 17:35:25,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3717 states. [2020-12-23 17:35:25,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3717 states to 3717 states and 5187 transitions. [2020-12-23 17:35:25,999 INFO L78 Accepts]: Start accepts. Automaton has 3717 states and 5187 transitions. Word has length 23 [2020-12-23 17:35:25,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:25,999 INFO L481 AbstractCegarLoop]: Abstraction has 3717 states and 5187 transitions. [2020-12-23 17:35:25,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:25,999 INFO L276 IsEmpty]: Start isEmpty. Operand 3717 states and 5187 transitions. [2020-12-23 17:35:26,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 17:35:26,005 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:26,005 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] [2020-12-23 17:35:26,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-23 17:35:26,006 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:26,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:26,006 INFO L82 PathProgramCache]: Analyzing trace with hash -331549300, now seen corresponding path program 1 times [2020-12-23 17:35:26,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:26,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013071163] [2020-12-23 17:35:26,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:26,028 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 17:35:26,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013071163] [2020-12-23 17:35:26,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:26,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:26,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474324442] [2020-12-23 17:35:26,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:26,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:26,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:26,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:26,031 INFO L87 Difference]: Start difference. First operand 3717 states and 5187 transitions. Second operand 3 states. [2020-12-23 17:35:26,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:26,065 INFO L93 Difference]: Finished difference Result 3783 states and 5188 transitions. [2020-12-23 17:35:26,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:26,066 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-23 17:35:26,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:26,087 INFO L225 Difference]: With dead ends: 3783 [2020-12-23 17:35:26,088 INFO L226 Difference]: Without dead ends: 3783 [2020-12-23 17:35:26,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:26,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2020-12-23 17:35:26,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3781. [2020-12-23 17:35:26,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3781 states. [2020-12-23 17:35:26,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3781 states to 3781 states and 5187 transitions. [2020-12-23 17:35:26,193 INFO L78 Accepts]: Start accepts. Automaton has 3781 states and 5187 transitions. Word has length 24 [2020-12-23 17:35:26,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:26,193 INFO L481 AbstractCegarLoop]: Abstraction has 3781 states and 5187 transitions. [2020-12-23 17:35:26,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:26,193 INFO L276 IsEmpty]: Start isEmpty. Operand 3781 states and 5187 transitions. [2020-12-23 17:35:26,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 17:35:26,199 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:26,199 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] [2020-12-23 17:35:26,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-23 17:35:26,200 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:26,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:26,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1342666550, now seen corresponding path program 1 times [2020-12-23 17:35:26,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:26,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369036753] [2020-12-23 17:35:26,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:26,223 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 17:35:26,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369036753] [2020-12-23 17:35:26,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:26,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:26,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537061590] [2020-12-23 17:35:26,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:26,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:26,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:26,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:26,225 INFO L87 Difference]: Start difference. First operand 3781 states and 5187 transitions. Second operand 3 states. [2020-12-23 17:35:26,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:26,265 INFO L93 Difference]: Finished difference Result 6407 states and 8772 transitions. [2020-12-23 17:35:26,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:26,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-23 17:35:26,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:26,297 INFO L225 Difference]: With dead ends: 6407 [2020-12-23 17:35:26,298 INFO L226 Difference]: Without dead ends: 6407 [2020-12-23 17:35:26,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:26,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6407 states. [2020-12-23 17:35:26,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6407 to 5637. [2020-12-23 17:35:26,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5637 states. [2020-12-23 17:35:26,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5637 states to 5637 states and 7491 transitions. [2020-12-23 17:35:26,474 INFO L78 Accepts]: Start accepts. Automaton has 5637 states and 7491 transitions. Word has length 24 [2020-12-23 17:35:26,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:26,475 INFO L481 AbstractCegarLoop]: Abstraction has 5637 states and 7491 transitions. [2020-12-23 17:35:26,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:26,475 INFO L276 IsEmpty]: Start isEmpty. Operand 5637 states and 7491 transitions. [2020-12-23 17:35:26,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 17:35:26,485 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:26,486 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] [2020-12-23 17:35:26,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-23 17:35:26,486 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:26,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:26,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1929472564, now seen corresponding path program 1 times [2020-12-23 17:35:26,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:26,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188920089] [2020-12-23 17:35:26,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:26,509 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 17:35:26,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188920089] [2020-12-23 17:35:26,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:26,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:26,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650838796] [2020-12-23 17:35:26,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:26,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:26,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:26,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:26,512 INFO L87 Difference]: Start difference. First operand 5637 states and 7491 transitions. Second operand 3 states. [2020-12-23 17:35:26,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:26,561 INFO L93 Difference]: Finished difference Result 7303 states and 9476 transitions. [2020-12-23 17:35:26,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:26,562 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-23 17:35:26,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:26,582 INFO L225 Difference]: With dead ends: 7303 [2020-12-23 17:35:26,583 INFO L226 Difference]: Without dead ends: 7303 [2020-12-23 17:35:26,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:26,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7303 states. [2020-12-23 17:35:26,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7303 to 7301. [2020-12-23 17:35:26,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7301 states. [2020-12-23 17:35:26,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7301 states to 7301 states and 9475 transitions. [2020-12-23 17:35:26,767 INFO L78 Accepts]: Start accepts. Automaton has 7301 states and 9475 transitions. Word has length 24 [2020-12-23 17:35:26,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:26,767 INFO L481 AbstractCegarLoop]: Abstraction has 7301 states and 9475 transitions. [2020-12-23 17:35:26,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:26,767 INFO L276 IsEmpty]: Start isEmpty. Operand 7301 states and 9475 transitions. [2020-12-23 17:35:26,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 17:35:26,780 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:26,780 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] [2020-12-23 17:35:26,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-23 17:35:26,781 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:26,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:26,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1327225645, now seen corresponding path program 1 times [2020-12-23 17:35:26,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:26,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279398587] [2020-12-23 17:35:26,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:26,806 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 17:35:26,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279398587] [2020-12-23 17:35:26,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:26,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:26,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147069278] [2020-12-23 17:35:26,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:26,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:26,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:26,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:26,808 INFO L87 Difference]: Start difference. First operand 7301 states and 9475 transitions. Second operand 3 states. [2020-12-23 17:35:26,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:26,901 INFO L93 Difference]: Finished difference Result 7431 states and 9476 transitions. [2020-12-23 17:35:26,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:26,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-23 17:35:26,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:26,922 INFO L225 Difference]: With dead ends: 7431 [2020-12-23 17:35:26,923 INFO L226 Difference]: Without dead ends: 7431 [2020-12-23 17:35:26,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:26,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7431 states. [2020-12-23 17:35:27,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7431 to 7429. [2020-12-23 17:35:27,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7429 states. [2020-12-23 17:35:27,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7429 states to 7429 states and 9475 transitions. [2020-12-23 17:35:27,127 INFO L78 Accepts]: Start accepts. Automaton has 7429 states and 9475 transitions. Word has length 25 [2020-12-23 17:35:27,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:27,127 INFO L481 AbstractCegarLoop]: Abstraction has 7429 states and 9475 transitions. [2020-12-23 17:35:27,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:27,128 INFO L276 IsEmpty]: Start isEmpty. Operand 7429 states and 9475 transitions. [2020-12-23 17:35:27,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 17:35:27,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:27,139 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] [2020-12-23 17:35:27,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-23 17:35:27,140 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:27,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:27,141 INFO L82 PathProgramCache]: Analyzing trace with hash 316108395, now seen corresponding path program 1 times [2020-12-23 17:35:27,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:27,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696300452] [2020-12-23 17:35:27,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:27,161 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 17:35:27,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696300452] [2020-12-23 17:35:27,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:27,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:27,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915714660] [2020-12-23 17:35:27,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:27,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:27,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:27,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:27,164 INFO L87 Difference]: Start difference. First operand 7429 states and 9475 transitions. Second operand 3 states. [2020-12-23 17:35:27,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:27,229 INFO L93 Difference]: Finished difference Result 12295 states and 15492 transitions. [2020-12-23 17:35:27,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:27,229 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-23 17:35:27,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:27,259 INFO L225 Difference]: With dead ends: 12295 [2020-12-23 17:35:27,259 INFO L226 Difference]: Without dead ends: 12295 [2020-12-23 17:35:27,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:27,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12295 states. [2020-12-23 17:35:27,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12295 to 11269. [2020-12-23 17:35:27,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11269 states. [2020-12-23 17:35:27,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11269 states to 11269 states and 13955 transitions. [2020-12-23 17:35:27,574 INFO L78 Accepts]: Start accepts. Automaton has 11269 states and 13955 transitions. Word has length 25 [2020-12-23 17:35:27,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:27,574 INFO L481 AbstractCegarLoop]: Abstraction has 11269 states and 13955 transitions. [2020-12-23 17:35:27,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:27,574 INFO L276 IsEmpty]: Start isEmpty. Operand 11269 states and 13955 transitions. [2020-12-23 17:35:27,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 17:35:27,595 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:27,595 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] [2020-12-23 17:35:27,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-23 17:35:27,596 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:27,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:27,596 INFO L82 PathProgramCache]: Analyzing trace with hash -270697619, now seen corresponding path program 1 times [2020-12-23 17:35:27,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:27,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681436783] [2020-12-23 17:35:27,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:27,619 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 17:35:27,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681436783] [2020-12-23 17:35:27,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:27,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:27,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041633533] [2020-12-23 17:35:27,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:27,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:27,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:27,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:27,622 INFO L87 Difference]: Start difference. First operand 11269 states and 13955 transitions. Second operand 3 states. [2020-12-23 17:35:27,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:27,692 INFO L93 Difference]: Finished difference Result 14343 states and 17156 transitions. [2020-12-23 17:35:27,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:27,693 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-23 17:35:27,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:27,731 INFO L225 Difference]: With dead ends: 14343 [2020-12-23 17:35:27,732 INFO L226 Difference]: Without dead ends: 14343 [2020-12-23 17:35:27,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:27,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14343 states. [2020-12-23 17:35:28,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14343 to 14341. [2020-12-23 17:35:28,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14341 states. [2020-12-23 17:35:28,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14341 states to 14341 states and 17155 transitions. [2020-12-23 17:35:28,251 INFO L78 Accepts]: Start accepts. Automaton has 14341 states and 17155 transitions. Word has length 25 [2020-12-23 17:35:28,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:28,252 INFO L481 AbstractCegarLoop]: Abstraction has 14341 states and 17155 transitions. [2020-12-23 17:35:28,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:28,252 INFO L276 IsEmpty]: Start isEmpty. Operand 14341 states and 17155 transitions. [2020-12-23 17:35:28,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 17:35:28,273 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:28,273 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] [2020-12-23 17:35:28,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-23 17:35:28,273 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:28,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:28,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1209641729, now seen corresponding path program 1 times [2020-12-23 17:35:28,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:28,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460040335] [2020-12-23 17:35:28,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:28,298 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 17:35:28,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460040335] [2020-12-23 17:35:28,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:28,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:28,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931531343] [2020-12-23 17:35:28,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:28,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:28,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:28,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:28,300 INFO L87 Difference]: Start difference. First operand 14341 states and 17155 transitions. Second operand 3 states. [2020-12-23 17:35:28,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:28,361 INFO L93 Difference]: Finished difference Result 14599 states and 17156 transitions. [2020-12-23 17:35:28,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:28,361 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-23 17:35:28,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:28,393 INFO L225 Difference]: With dead ends: 14599 [2020-12-23 17:35:28,393 INFO L226 Difference]: Without dead ends: 14599 [2020-12-23 17:35:28,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:28,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14599 states. [2020-12-23 17:35:28,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14599 to 14597. [2020-12-23 17:35:28,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14597 states. [2020-12-23 17:35:28,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14597 states to 14597 states and 17155 transitions. [2020-12-23 17:35:28,799 INFO L78 Accepts]: Start accepts. Automaton has 14597 states and 17155 transitions. Word has length 26 [2020-12-23 17:35:28,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:28,799 INFO L481 AbstractCegarLoop]: Abstraction has 14597 states and 17155 transitions. [2020-12-23 17:35:28,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:28,799 INFO L276 IsEmpty]: Start isEmpty. Operand 14597 states and 17155 transitions. [2020-12-23 17:35:28,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 17:35:28,819 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:28,819 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] [2020-12-23 17:35:28,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-23 17:35:28,821 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:28,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:28,822 INFO L82 PathProgramCache]: Analyzing trace with hash 198524479, now seen corresponding path program 1 times [2020-12-23 17:35:28,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:28,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751996802] [2020-12-23 17:35:28,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:28,859 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 17:35:28,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751996802] [2020-12-23 17:35:28,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:28,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:28,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141214869] [2020-12-23 17:35:28,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:28,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:28,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:28,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:28,861 INFO L87 Difference]: Start difference. First operand 14597 states and 17155 transitions. Second operand 3 states. [2020-12-23 17:35:28,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:28,948 INFO L93 Difference]: Finished difference Result 23557 states and 26883 transitions. [2020-12-23 17:35:28,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:28,949 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-23 17:35:28,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:29,002 INFO L225 Difference]: With dead ends: 23557 [2020-12-23 17:35:29,002 INFO L226 Difference]: Without dead ends: 23557 [2020-12-23 17:35:29,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:29,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23557 states. [2020-12-23 17:35:29,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23557 to 22533. [2020-12-23 17:35:29,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22533 states. [2020-12-23 17:35:29,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22533 states to 22533 states and 25859 transitions. [2020-12-23 17:35:29,785 INFO L78 Accepts]: Start accepts. Automaton has 22533 states and 25859 transitions. Word has length 26 [2020-12-23 17:35:29,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:29,787 INFO L481 AbstractCegarLoop]: Abstraction has 22533 states and 25859 transitions. [2020-12-23 17:35:29,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:29,788 INFO L276 IsEmpty]: Start isEmpty. Operand 22533 states and 25859 transitions. [2020-12-23 17:35:29,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 17:35:29,838 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:29,839 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] [2020-12-23 17:35:29,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-23 17:35:29,839 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:29,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:29,843 INFO L82 PathProgramCache]: Analyzing trace with hash -388281535, now seen corresponding path program 1 times [2020-12-23 17:35:29,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:29,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476238387] [2020-12-23 17:35:29,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:29,869 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 17:35:29,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476238387] [2020-12-23 17:35:29,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:29,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:29,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242492523] [2020-12-23 17:35:29,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:29,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:29,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:29,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:29,875 INFO L87 Difference]: Start difference. First operand 22533 states and 25859 transitions. Second operand 3 states. [2020-12-23 17:35:30,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:30,012 INFO L93 Difference]: Finished difference Result 28163 states and 30722 transitions. [2020-12-23 17:35:30,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:30,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-23 17:35:30,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:30,013 INFO L225 Difference]: With dead ends: 28163 [2020-12-23 17:35:30,014 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 17:35:30,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:35:30,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 17:35:30,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 17:35:30,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 17:35:30,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 17:35:30,015 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-12-23 17:35:30,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:30,016 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 17:35:30,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:30,016 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 17:35:30,016 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 17:35:30,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-23 17:35:30,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 05:35:30 BoogieIcfgContainer [2020-12-23 17:35:30,024 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 17:35:30,025 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 17:35:30,025 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 17:35:30,026 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 17:35:30,026 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:35:22" (3/4) ... [2020-12-23 17:35:30,031 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 17:35:30,116 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-23 17:35:30,116 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 17:35:30,117 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-23 17:35:30,117 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 17:35:30,175 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/locks/test_locks_10.c-witness.graphml [2020-12-23 17:35:30,175 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 17:35:30,178 INFO L168 Benchmark]: Toolchain (without parser) took 8442.03 ms. Allocated memory was 153.1 MB in the beginning and 1.1 GB in the end (delta: 973.1 MB). Free memory was 129.9 MB in the beginning and 964.7 MB in the end (delta: -834.8 MB). Peak memory consumption was 197.7 MB. Max. memory is 8.0 GB. [2020-12-23 17:35:30,179 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 153.1 MB. Free memory is still 128.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 17:35:30,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.02 ms. Allocated memory is still 153.1 MB. Free memory was 129.6 MB in the beginning and 119.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 17:35:30,179 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.32 ms. Allocated memory is still 153.1 MB. Free memory was 119.1 MB in the beginning and 117.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 17:35:30,180 INFO L168 Benchmark]: Boogie Preprocessor took 35.41 ms. Allocated memory is still 153.1 MB. Free memory was 117.5 MB in the beginning and 116.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 17:35:30,180 INFO L168 Benchmark]: RCFGBuilder took 560.64 ms. Allocated memory is still 153.1 MB. Free memory was 116.1 MB in the beginning and 96.0 MB in the end (delta: 20.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-12-23 17:35:30,181 INFO L168 Benchmark]: TraceAbstraction took 7287.40 ms. Allocated memory was 153.1 MB in the beginning and 1.1 GB in the end (delta: 973.1 MB). Free memory was 95.5 MB in the beginning and 919.1 MB in the end (delta: -823.6 MB). Peak memory consumption was 151.0 MB. Max. memory is 8.0 GB. [2020-12-23 17:35:30,181 INFO L168 Benchmark]: Witness Printer took 150.08 ms. Allocated memory is still 1.1 GB. Free memory was 919.1 MB in the beginning and 964.7 MB in the end (delta: -45.6 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB. [2020-12-23 17:35:30,184 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 153.1 MB. Free memory is still 128.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 345.02 ms. Allocated memory is still 153.1 MB. Free memory was 129.6 MB in the beginning and 119.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 52.32 ms. Allocated memory is still 153.1 MB. Free memory was 119.1 MB in the beginning and 117.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.41 ms. Allocated memory is still 153.1 MB. Free memory was 117.5 MB in the beginning and 116.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 560.64 ms. Allocated memory is still 153.1 MB. Free memory was 116.1 MB in the beginning and 96.0 MB in the end (delta: 20.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7287.40 ms. Allocated memory was 153.1 MB in the beginning and 1.1 GB in the end (delta: 973.1 MB). Free memory was 95.5 MB in the beginning and 919.1 MB in the end (delta: -823.6 MB). Peak memory consumption was 151.0 MB. Max. memory is 8.0 GB. * Witness Printer took 150.08 ms. Allocated memory is still 1.1 GB. Free memory was 919.1 MB in the beginning and 964.7 MB in the end (delta: -45.6 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 163]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 6]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.1s, OverallIterations: 30, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2433 SDtfs, 1207 SDslu, 1529 SDs, 0 SdLazy, 150 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22533occurred in iteration=29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.3s AutomataMinimizationTime, 30 MinimizatonAttempts, 4124 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 619 NumberOfCodeBlocks, 619 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 589 ConstructedInterpolants, 0 QuantifiedInterpolants, 26029 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 30 InterpolantComputations, 30 PerfectInterpolantSequences, 0/0 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 proved your program to be correct! Received shutdown request...