./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/locks/test_locks_9.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/locks/test_locks_9.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 04dc39fb366d4472036345a213cca0ee8b355c41bc9af7e685ecaa2d36ed9484 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 19:54:03,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 19:54:03,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 19:54:03,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 19:54:03,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 19:54:03,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 19:54:03,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 19:54:03,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 19:54:03,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 19:54:03,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 19:54:03,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 19:54:03,518 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 19:54:03,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 19:54:03,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 19:54:03,520 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 19:54:03,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 19:54:03,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 19:54:03,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 19:54:03,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 19:54:03,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 19:54:03,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 19:54:03,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 19:54:03,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 19:54:03,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 19:54:03,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 19:54:03,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 19:54:03,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 19:54:03,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 19:54:03,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 19:54:03,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 19:54:03,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 19:54:03,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 19:54:03,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 19:54:03,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 19:54:03,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 19:54:03,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 19:54:03,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 19:54:03,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 19:54:03,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 19:54:03,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 19:54:03,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 19:54:03,562 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-14 19:54:03,588 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 19:54:03,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 19:54:03,589 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 19:54:03,589 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 19:54:03,590 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 19:54:03,590 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 19:54:03,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 19:54:03,591 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 19:54:03,591 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 19:54:03,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 19:54:03,592 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 19:54:03,592 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 19:54:03,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 19:54:03,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 19:54:03,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 19:54:03,593 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-14 19:54:03,593 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-14 19:54:03,593 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-14 19:54:03,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 19:54:03,594 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 19:54:03,594 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 19:54:03,594 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 19:54:03,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 19:54:03,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 19:54:03,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 19:54:03,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 19:54:03,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 19:54:03,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 19:54:03,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 19:54:03,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 19:54:03,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 19:54:03,597 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04dc39fb366d4472036345a213cca0ee8b355c41bc9af7e685ecaa2d36ed9484 [2021-12-14 19:54:03,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 19:54:03,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 19:54:03,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 19:54:03,852 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 19:54:03,853 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 19:54:03,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_9.c [2021-12-14 19:54:03,917 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ac6ef097/94cb9e5a9a2949f283ea2bb10489de01/FLAG5b59a4a38 [2021-12-14 19:54:04,339 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 19:54:04,340 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_9.c [2021-12-14 19:54:04,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ac6ef097/94cb9e5a9a2949f283ea2bb10489de01/FLAG5b59a4a38 [2021-12-14 19:54:04,363 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ac6ef097/94cb9e5a9a2949f283ea2bb10489de01 [2021-12-14 19:54:04,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 19:54:04,372 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 19:54:04,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 19:54:04,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 19:54:04,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 19:54:04,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:54:04" (1/1) ... [2021-12-14 19:54:04,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eb17040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:04, skipping insertion in model container [2021-12-14 19:54:04,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:54:04" (1/1) ... [2021-12-14 19:54:04,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 19:54:04,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 19:54:04,593 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_9.c[3555,3568] [2021-12-14 19:54:04,598 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 19:54:04,609 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 19:54:04,647 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_9.c[3555,3568] [2021-12-14 19:54:04,649 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 19:54:04,661 INFO L208 MainTranslator]: Completed translation [2021-12-14 19:54:04,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:04 WrapperNode [2021-12-14 19:54:04,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 19:54:04,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 19:54:04,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 19:54:04,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 19:54:04,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:04" (1/1) ... [2021-12-14 19:54:04,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:04" (1/1) ... [2021-12-14 19:54:04,708 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 127 [2021-12-14 19:54:04,708 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 19:54:04,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 19:54:04,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 19:54:04,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 19:54:04,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:04" (1/1) ... [2021-12-14 19:54:04,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:04" (1/1) ... [2021-12-14 19:54:04,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:04" (1/1) ... [2021-12-14 19:54:04,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:04" (1/1) ... [2021-12-14 19:54:04,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:04" (1/1) ... [2021-12-14 19:54:04,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:04" (1/1) ... [2021-12-14 19:54:04,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:04" (1/1) ... [2021-12-14 19:54:04,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 19:54:04,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 19:54:04,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 19:54:04,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 19:54:04,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:04" (1/1) ... [2021-12-14 19:54:04,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 19:54:04,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 19:54:04,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 19:54:04,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 19:54:04,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 19:54:04,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 19:54:04,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 19:54:04,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 19:54:04,869 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 19:54:04,871 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 19:54:05,058 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 19:54:05,070 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 19:54:05,071 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 19:54:05,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:54:05 BoogieIcfgContainer [2021-12-14 19:54:05,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 19:54:05,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 19:54:05,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 19:54:05,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 19:54:05,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:54:04" (1/3) ... [2021-12-14 19:54:05,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c432a40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:54:05, skipping insertion in model container [2021-12-14 19:54:05,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:54:04" (2/3) ... [2021-12-14 19:54:05,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c432a40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:54:05, skipping insertion in model container [2021-12-14 19:54:05,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:54:05" (3/3) ... [2021-12-14 19:54:05,079 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_9.c [2021-12-14 19:54:05,082 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 19:54:05,082 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 19:54:05,113 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 19:54:05,118 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 19:54:05,118 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 19:54:05,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 35 states have (on average 1.9142857142857144) internal successors, (67), 37 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:05,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-14 19:54:05,133 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:05,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-14 19:54:05,134 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-14 19:54:05,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:05,138 INFO L85 PathProgramCache]: Analyzing trace with hash 28702923, now seen corresponding path program 1 times [2021-12-14 19:54:05,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:05,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291890820] [2021-12-14 19:54:05,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:05,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:05,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:05,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:05,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291890820] [2021-12-14 19:54:05,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291890820] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:05,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:05,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 19:54:05,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728745657] [2021-12-14 19:54:05,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:05,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 19:54:05,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:05,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 19:54:05,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 19:54:05,299 INFO L87 Difference]: Start difference. First operand has 38 states, 35 states have (on average 1.9142857142857144) internal successors, (67), 37 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:05,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:05,313 INFO L93 Difference]: Finished difference Result 38 states and 64 transitions. [2021-12-14 19:54:05,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 19:54:05,315 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-14 19:54:05,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:05,322 INFO L225 Difference]: With dead ends: 38 [2021-12-14 19:54:05,322 INFO L226 Difference]: Without dead ends: 36 [2021-12-14 19:54:05,324 INFO L932 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 [2021-12-14 19:54:05,329 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:05,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:05,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-14 19:54:05,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-12-14 19:54:05,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 34 states have (on average 1.8235294117647058) internal successors, (62), 35 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:05,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 62 transitions. [2021-12-14 19:54:05,363 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 62 transitions. Word has length 5 [2021-12-14 19:54:05,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:05,364 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 62 transitions. [2021-12-14 19:54:05,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:05,364 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 62 transitions. [2021-12-14 19:54:05,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-14 19:54:05,364 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:05,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-14 19:54:05,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 19:54:05,366 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-14 19:54:05,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:05,369 INFO L85 PathProgramCache]: Analyzing trace with hash 889697419, now seen corresponding path program 1 times [2021-12-14 19:54:05,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:05,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558439421] [2021-12-14 19:54:05,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:05,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:05,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:05,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:05,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558439421] [2021-12-14 19:54:05,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558439421] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:05,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:05,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 19:54:05,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785395184] [2021-12-14 19:54:05,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:05,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:05,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:05,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:05,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:05,450 INFO L87 Difference]: Start difference. First operand 36 states and 62 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:05,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:05,466 INFO L93 Difference]: Finished difference Result 35 states and 61 transitions. [2021-12-14 19:54:05,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:05,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-14 19:54:05,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:05,468 INFO L225 Difference]: With dead ends: 35 [2021-12-14 19:54:05,468 INFO L226 Difference]: Without dead ends: 33 [2021-12-14 19:54:05,471 INFO L932 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 [2021-12-14 19:54:05,473 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 56 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:05,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 61 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:05,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-12-14 19:54:05,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-12-14 19:54:05,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:05,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 59 transitions. [2021-12-14 19:54:05,481 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 59 transitions. Word has length 6 [2021-12-14 19:54:05,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:05,482 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 59 transitions. [2021-12-14 19:54:05,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:05,483 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 59 transitions. [2021-12-14 19:54:05,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-14 19:54:05,484 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:05,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:54:05,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 19:54:05,485 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-14 19:54:05,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:05,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1657621241, now seen corresponding path program 1 times [2021-12-14 19:54:05,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:05,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731084560] [2021-12-14 19:54:05,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:05,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:05,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:05,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:05,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731084560] [2021-12-14 19:54:05,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731084560] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:05,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:05,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:54:05,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323893696] [2021-12-14 19:54:05,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:05,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:05,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:05,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:05,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:05,539 INFO L87 Difference]: Start difference. First operand 33 states and 59 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:05,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:05,554 INFO L93 Difference]: Finished difference Result 63 states and 113 transitions. [2021-12-14 19:54:05,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:05,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-14 19:54:05,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:05,556 INFO L225 Difference]: With dead ends: 63 [2021-12-14 19:54:05,556 INFO L226 Difference]: Without dead ends: 63 [2021-12-14 19:54:05,556 INFO L932 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 [2021-12-14 19:54:05,557 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 43 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:05,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 115 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:05,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-12-14 19:54:05,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 43. [2021-12-14 19:54:05,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.8571428571428572) internal successors, (78), 42 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:05,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 78 transitions. [2021-12-14 19:54:05,564 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 78 transitions. Word has length 16 [2021-12-14 19:54:05,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:05,564 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 78 transitions. [2021-12-14 19:54:05,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:05,565 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 78 transitions. [2021-12-14 19:54:05,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-14 19:54:05,565 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:05,566 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:54:05,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 19:54:05,566 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-14 19:54:05,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:05,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1399455803, now seen corresponding path program 1 times [2021-12-14 19:54:05,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:05,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915838553] [2021-12-14 19:54:05,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:05,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:05,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:05,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:05,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915838553] [2021-12-14 19:54:05,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915838553] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:05,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:05,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:54:05,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079958787] [2021-12-14 19:54:05,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:05,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:05,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:05,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:05,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:05,615 INFO L87 Difference]: Start difference. First operand 43 states and 78 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:05,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:05,628 INFO L93 Difference]: Finished difference Result 63 states and 111 transitions. [2021-12-14 19:54:05,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:05,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-14 19:54:05,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:05,630 INFO L225 Difference]: With dead ends: 63 [2021-12-14 19:54:05,630 INFO L226 Difference]: Without dead ends: 63 [2021-12-14 19:54:05,631 INFO L932 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 [2021-12-14 19:54:05,631 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 43 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:05,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 129 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:05,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-12-14 19:54:05,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2021-12-14 19:54:05,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.8333333333333333) internal successors, (110), 60 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:05,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 110 transitions. [2021-12-14 19:54:05,637 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 110 transitions. Word has length 16 [2021-12-14 19:54:05,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:05,638 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 110 transitions. [2021-12-14 19:54:05,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:05,638 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 110 transitions. [2021-12-14 19:54:05,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-14 19:54:05,639 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:05,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:54:05,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 19:54:05,639 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-14 19:54:05,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:05,640 INFO L85 PathProgramCache]: Analyzing trace with hash 153562753, now seen corresponding path program 1 times [2021-12-14 19:54:05,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:05,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615920543] [2021-12-14 19:54:05,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:05,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:05,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:05,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:05,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615920543] [2021-12-14 19:54:05,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615920543] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:05,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:05,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:54:05,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18840515] [2021-12-14 19:54:05,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:05,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:05,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:05,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:05,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:05,673 INFO L87 Difference]: Start difference. First operand 61 states and 110 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:05,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:05,685 INFO L93 Difference]: Finished difference Result 66 states and 113 transitions. [2021-12-14 19:54:05,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:05,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-14 19:54:05,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:05,687 INFO L225 Difference]: With dead ends: 66 [2021-12-14 19:54:05,687 INFO L226 Difference]: Without dead ends: 66 [2021-12-14 19:54:05,688 INFO L932 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 [2021-12-14 19:54:05,689 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 45 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:05,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 144 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:05,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-12-14 19:54:05,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2021-12-14 19:54:05,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.7777777777777777) internal successors, (112), 63 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:05,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 112 transitions. [2021-12-14 19:54:05,708 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 112 transitions. Word has length 17 [2021-12-14 19:54:05,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:05,709 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 112 transitions. [2021-12-14 19:54:05,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:05,709 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 112 transitions. [2021-12-14 19:54:05,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-14 19:54:05,712 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:05,712 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:54:05,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 19:54:05,712 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-14 19:54:05,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:05,713 INFO L85 PathProgramCache]: Analyzing trace with hash -433243261, now seen corresponding path program 1 times [2021-12-14 19:54:05,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:05,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991537449] [2021-12-14 19:54:05,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:05,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:05,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:05,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:05,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991537449] [2021-12-14 19:54:05,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991537449] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:05,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:05,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:54:05,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194848536] [2021-12-14 19:54:05,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:05,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:05,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:05,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:05,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:05,749 INFO L87 Difference]: Start difference. First operand 64 states and 112 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:05,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:05,768 INFO L93 Difference]: Finished difference Result 119 states and 210 transitions. [2021-12-14 19:54:05,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:05,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-14 19:54:05,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:05,770 INFO L225 Difference]: With dead ends: 119 [2021-12-14 19:54:05,783 INFO L226 Difference]: Without dead ends: 119 [2021-12-14 19:54:05,784 INFO L932 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 [2021-12-14 19:54:05,785 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 40 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:05,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 113 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:05,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-12-14 19:54:05,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 85. [2021-12-14 19:54:05,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.7738095238095237) internal successors, (149), 84 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:05,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 149 transitions. [2021-12-14 19:54:05,793 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 149 transitions. Word has length 17 [2021-12-14 19:54:05,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:05,793 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 149 transitions. [2021-12-14 19:54:05,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:05,793 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 149 transitions. [2021-12-14 19:54:05,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-14 19:54:05,794 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:05,794 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:54:05,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 19:54:05,795 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-14 19:54:05,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:05,796 INFO L85 PathProgramCache]: Analyzing trace with hash -175077823, now seen corresponding path program 1 times [2021-12-14 19:54:05,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:05,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839465051] [2021-12-14 19:54:05,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:05,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:05,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:05,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:05,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839465051] [2021-12-14 19:54:05,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839465051] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:05,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:05,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:54:05,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47609735] [2021-12-14 19:54:05,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:05,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:05,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:05,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:05,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:05,851 INFO L87 Difference]: Start difference. First operand 85 states and 149 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:05,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:05,871 INFO L93 Difference]: Finished difference Result 121 states and 208 transitions. [2021-12-14 19:54:05,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:05,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-14 19:54:05,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:05,874 INFO L225 Difference]: With dead ends: 121 [2021-12-14 19:54:05,876 INFO L226 Difference]: Without dead ends: 121 [2021-12-14 19:54:05,877 INFO L932 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 [2021-12-14 19:54:05,877 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 42 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:05,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 130 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:05,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-12-14 19:54:05,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2021-12-14 19:54:05,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.7542372881355932) internal successors, (207), 118 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:05,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 207 transitions. [2021-12-14 19:54:05,893 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 207 transitions. Word has length 17 [2021-12-14 19:54:05,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:05,893 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 207 transitions. [2021-12-14 19:54:05,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:05,894 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 207 transitions. [2021-12-14 19:54:05,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-14 19:54:05,894 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:05,895 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:54:05,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 19:54:05,895 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-14 19:54:05,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:05,896 INFO L85 PathProgramCache]: Analyzing trace with hash -545425190, now seen corresponding path program 1 times [2021-12-14 19:54:05,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:05,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242005784] [2021-12-14 19:54:05,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:05,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:05,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:05,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:05,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242005784] [2021-12-14 19:54:05,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242005784] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:05,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:05,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:54:05,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969774776] [2021-12-14 19:54:05,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:05,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:05,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:05,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:05,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:05,944 INFO L87 Difference]: Start difference. First operand 119 states and 207 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:05,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:05,967 INFO L93 Difference]: Finished difference Result 123 states and 208 transitions. [2021-12-14 19:54:05,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:05,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-14 19:54:05,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:05,968 INFO L225 Difference]: With dead ends: 123 [2021-12-14 19:54:05,969 INFO L226 Difference]: Without dead ends: 123 [2021-12-14 19:54:05,969 INFO L932 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 [2021-12-14 19:54:05,970 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 44 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:05,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 140 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:05,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-14 19:54:05,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2021-12-14 19:54:05,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.725) internal successors, (207), 120 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:05,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 207 transitions. [2021-12-14 19:54:05,985 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 207 transitions. Word has length 18 [2021-12-14 19:54:05,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:05,989 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 207 transitions. [2021-12-14 19:54:05,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:05,989 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 207 transitions. [2021-12-14 19:54:05,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-14 19:54:05,990 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:05,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:54:05,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 19:54:05,991 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-14 19:54:05,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:05,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1132231204, now seen corresponding path program 1 times [2021-12-14 19:54:05,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:05,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82466326] [2021-12-14 19:54:05,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:05,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:06,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:06,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:06,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82466326] [2021-12-14 19:54:06,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82466326] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:06,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:06,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:54:06,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6285328] [2021-12-14 19:54:06,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:06,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:06,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:06,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:06,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:06,034 INFO L87 Difference]: Start difference. First operand 121 states and 207 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:06,051 INFO L93 Difference]: Finished difference Result 231 states and 388 transitions. [2021-12-14 19:54:06,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:06,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-14 19:54:06,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:06,054 INFO L225 Difference]: With dead ends: 231 [2021-12-14 19:54:06,054 INFO L226 Difference]: Without dead ends: 231 [2021-12-14 19:54:06,054 INFO L932 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 [2021-12-14 19:54:06,056 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 42 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:06,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 115 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:06,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-12-14 19:54:06,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 229. [2021-12-14 19:54:06,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.6973684210526316) internal successors, (387), 228 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 387 transitions. [2021-12-14 19:54:06,086 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 387 transitions. Word has length 18 [2021-12-14 19:54:06,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:06,086 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 387 transitions. [2021-12-14 19:54:06,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,087 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 387 transitions. [2021-12-14 19:54:06,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-14 19:54:06,089 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:06,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:54:06,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 19:54:06,089 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-14 19:54:06,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:06,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1390396642, now seen corresponding path program 1 times [2021-12-14 19:54:06,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:06,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400430686] [2021-12-14 19:54:06,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:06,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:06,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:06,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:06,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400430686] [2021-12-14 19:54:06,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400430686] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:06,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:06,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:54:06,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144431715] [2021-12-14 19:54:06,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:06,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:06,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:06,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:06,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:06,143 INFO L87 Difference]: Start difference. First operand 229 states and 387 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:06,152 INFO L93 Difference]: Finished difference Result 287 states and 488 transitions. [2021-12-14 19:54:06,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:06,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-14 19:54:06,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:06,156 INFO L225 Difference]: With dead ends: 287 [2021-12-14 19:54:06,156 INFO L226 Difference]: Without dead ends: 287 [2021-12-14 19:54:06,156 INFO L932 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 [2021-12-14 19:54:06,157 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 37 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:06,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 152 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:06,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-12-14 19:54:06,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 229. [2021-12-14 19:54:06,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.6798245614035088) internal successors, (383), 228 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 383 transitions. [2021-12-14 19:54:06,168 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 383 transitions. Word has length 18 [2021-12-14 19:54:06,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:06,169 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 383 transitions. [2021-12-14 19:54:06,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,169 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 383 transitions. [2021-12-14 19:54:06,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-14 19:54:06,173 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:06,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:54:06,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 19:54:06,174 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-14 19:54:06,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:06,175 INFO L85 PathProgramCache]: Analyzing trace with hash -739214602, now seen corresponding path program 1 times [2021-12-14 19:54:06,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:06,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129162448] [2021-12-14 19:54:06,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:06,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:06,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:06,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:06,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129162448] [2021-12-14 19:54:06,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129162448] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:06,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:06,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:54:06,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063014624] [2021-12-14 19:54:06,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:06,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:06,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:06,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:06,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:06,229 INFO L87 Difference]: Start difference. First operand 229 states and 383 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:06,237 INFO L93 Difference]: Finished difference Result 419 states and 704 transitions. [2021-12-14 19:54:06,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:06,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-14 19:54:06,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:06,240 INFO L225 Difference]: With dead ends: 419 [2021-12-14 19:54:06,240 INFO L226 Difference]: Without dead ends: 419 [2021-12-14 19:54:06,241 INFO L932 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 [2021-12-14 19:54:06,241 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 34 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:06,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 109 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:06,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-12-14 19:54:06,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 321. [2021-12-14 19:54:06,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.646875) internal successors, (527), 320 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 527 transitions. [2021-12-14 19:54:06,251 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 527 transitions. Word has length 19 [2021-12-14 19:54:06,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:06,251 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 527 transitions. [2021-12-14 19:54:06,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,252 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 527 transitions. [2021-12-14 19:54:06,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-14 19:54:06,254 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:06,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:54:06,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 19:54:06,256 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-14 19:54:06,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:06,261 INFO L85 PathProgramCache]: Analyzing trace with hash -481049164, now seen corresponding path program 1 times [2021-12-14 19:54:06,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:06,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113119130] [2021-12-14 19:54:06,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:06,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:06,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:06,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:06,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113119130] [2021-12-14 19:54:06,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113119130] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:06,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:06,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:54:06,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150173995] [2021-12-14 19:54:06,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:06,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:06,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:06,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:06,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:06,307 INFO L87 Difference]: Start difference. First operand 321 states and 527 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:06,320 INFO L93 Difference]: Finished difference Result 443 states and 716 transitions. [2021-12-14 19:54:06,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:06,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-14 19:54:06,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:06,322 INFO L225 Difference]: With dead ends: 443 [2021-12-14 19:54:06,323 INFO L226 Difference]: Without dead ends: 443 [2021-12-14 19:54:06,323 INFO L932 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 [2021-12-14 19:54:06,323 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 40 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:06,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 132 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:06,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-12-14 19:54:06,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 441. [2021-12-14 19:54:06,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 1.625) internal successors, (715), 440 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 715 transitions. [2021-12-14 19:54:06,331 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 715 transitions. Word has length 19 [2021-12-14 19:54:06,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:06,332 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 715 transitions. [2021-12-14 19:54:06,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,332 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 715 transitions. [2021-12-14 19:54:06,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-14 19:54:06,333 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:06,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:54:06,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 19:54:06,333 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-14 19:54:06,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:06,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1440601487, now seen corresponding path program 1 times [2021-12-14 19:54:06,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:06,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978676797] [2021-12-14 19:54:06,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:06,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:06,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:06,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:06,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978676797] [2021-12-14 19:54:06,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978676797] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:06,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:06,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:54:06,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746131427] [2021-12-14 19:54:06,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:06,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:06,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:06,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:06,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:06,356 INFO L87 Difference]: Start difference. First operand 441 states and 715 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:06,364 INFO L93 Difference]: Finished difference Result 455 states and 724 transitions. [2021-12-14 19:54:06,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:06,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-14 19:54:06,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:06,367 INFO L225 Difference]: With dead ends: 455 [2021-12-14 19:54:06,367 INFO L226 Difference]: Without dead ends: 455 [2021-12-14 19:54:06,367 INFO L932 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 [2021-12-14 19:54:06,368 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 42 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:06,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 132 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:06,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2021-12-14 19:54:06,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 453. [2021-12-14 19:54:06,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 452 states have (on average 1.5995575221238938) internal successors, (723), 452 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 723 transitions. [2021-12-14 19:54:06,376 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 723 transitions. Word has length 20 [2021-12-14 19:54:06,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:06,376 INFO L470 AbstractCegarLoop]: Abstraction has 453 states and 723 transitions. [2021-12-14 19:54:06,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,377 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 723 transitions. [2021-12-14 19:54:06,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-14 19:54:06,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:06,378 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:54:06,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 19:54:06,378 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-14 19:54:06,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:06,379 INFO L85 PathProgramCache]: Analyzing trace with hash -2027407501, now seen corresponding path program 1 times [2021-12-14 19:54:06,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:06,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479056845] [2021-12-14 19:54:06,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:06,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:06,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:06,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:06,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479056845] [2021-12-14 19:54:06,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479056845] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:06,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:06,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:54:06,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249746099] [2021-12-14 19:54:06,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:06,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:06,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:06,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:06,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:06,403 INFO L87 Difference]: Start difference. First operand 453 states and 723 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:06,412 INFO L93 Difference]: Finished difference Result 807 states and 1292 transitions. [2021-12-14 19:54:06,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:06,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-14 19:54:06,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:06,416 INFO L225 Difference]: With dead ends: 807 [2021-12-14 19:54:06,416 INFO L226 Difference]: Without dead ends: 807 [2021-12-14 19:54:06,416 INFO L932 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 [2021-12-14 19:54:06,417 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 31 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:06,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 107 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:06,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2021-12-14 19:54:06,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 645. [2021-12-14 19:54:06,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 644 states have (on average 1.5574534161490683) internal successors, (1003), 644 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1003 transitions. [2021-12-14 19:54:06,434 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1003 transitions. Word has length 20 [2021-12-14 19:54:06,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:06,435 INFO L470 AbstractCegarLoop]: Abstraction has 645 states and 1003 transitions. [2021-12-14 19:54:06,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,435 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1003 transitions. [2021-12-14 19:54:06,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-14 19:54:06,451 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:06,451 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:54:06,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 19:54:06,452 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-14 19:54:06,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:06,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1769242063, now seen corresponding path program 1 times [2021-12-14 19:54:06,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:06,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528401111] [2021-12-14 19:54:06,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:06,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:06,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:06,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:06,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528401111] [2021-12-14 19:54:06,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528401111] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:06,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:06,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:54:06,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291875998] [2021-12-14 19:54:06,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:06,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:06,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:06,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:06,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:06,483 INFO L87 Difference]: Start difference. First operand 645 states and 1003 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:06,494 INFO L93 Difference]: Finished difference Result 871 states and 1332 transitions. [2021-12-14 19:54:06,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:06,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-14 19:54:06,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:06,498 INFO L225 Difference]: With dead ends: 871 [2021-12-14 19:54:06,498 INFO L226 Difference]: Without dead ends: 871 [2021-12-14 19:54:06,499 INFO L932 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 [2021-12-14 19:54:06,501 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 39 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:06,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 133 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:06,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2021-12-14 19:54:06,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 869. [2021-12-14 19:54:06,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 868 states have (on average 1.5334101382488479) internal successors, (1331), 868 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1331 transitions. [2021-12-14 19:54:06,515 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1331 transitions. Word has length 20 [2021-12-14 19:54:06,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:06,515 INFO L470 AbstractCegarLoop]: Abstraction has 869 states and 1331 transitions. [2021-12-14 19:54:06,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,516 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1331 transitions. [2021-12-14 19:54:06,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-14 19:54:06,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:06,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:54:06,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-14 19:54:06,517 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-14 19:54:06,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:06,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1575091945, now seen corresponding path program 1 times [2021-12-14 19:54:06,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:06,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771707875] [2021-12-14 19:54:06,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:06,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:06,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:06,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:06,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771707875] [2021-12-14 19:54:06,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771707875] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:06,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:06,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:54:06,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994113609] [2021-12-14 19:54:06,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:06,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:06,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:06,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:06,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:06,538 INFO L87 Difference]: Start difference. First operand 869 states and 1331 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:06,548 INFO L93 Difference]: Finished difference Result 887 states and 1332 transitions. [2021-12-14 19:54:06,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:06,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-14 19:54:06,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:06,552 INFO L225 Difference]: With dead ends: 887 [2021-12-14 19:54:06,552 INFO L226 Difference]: Without dead ends: 887 [2021-12-14 19:54:06,552 INFO L932 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 [2021-12-14 19:54:06,553 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 41 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:06,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 128 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:06,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2021-12-14 19:54:06,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 885. [2021-12-14 19:54:06,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 884 states have (on average 1.505656108597285) internal successors, (1331), 884 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1331 transitions. [2021-12-14 19:54:06,568 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1331 transitions. Word has length 21 [2021-12-14 19:54:06,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:06,568 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1331 transitions. [2021-12-14 19:54:06,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,569 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1331 transitions. [2021-12-14 19:54:06,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-14 19:54:06,570 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:06,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:54:06,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-14 19:54:06,570 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-14 19:54:06,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:06,571 INFO L85 PathProgramCache]: Analyzing trace with hash 988285931, now seen corresponding path program 1 times [2021-12-14 19:54:06,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:06,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055126485] [2021-12-14 19:54:06,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:06,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:06,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:06,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:06,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055126485] [2021-12-14 19:54:06,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055126485] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:06,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:06,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:54:06,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963510866] [2021-12-14 19:54:06,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:06,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:06,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:06,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:06,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:06,592 INFO L87 Difference]: Start difference. First operand 885 states and 1331 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:06,604 INFO L93 Difference]: Finished difference Result 1543 states and 2324 transitions. [2021-12-14 19:54:06,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:06,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-14 19:54:06,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:06,609 INFO L225 Difference]: With dead ends: 1543 [2021-12-14 19:54:06,609 INFO L226 Difference]: Without dead ends: 1543 [2021-12-14 19:54:06,610 INFO L932 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 [2021-12-14 19:54:06,610 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 28 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:06,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 105 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:06,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2021-12-14 19:54:06,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1285. [2021-12-14 19:54:06,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1284 states have (on average 1.4602803738317758) internal successors, (1875), 1284 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1875 transitions. [2021-12-14 19:54:06,635 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1875 transitions. Word has length 21 [2021-12-14 19:54:06,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:06,635 INFO L470 AbstractCegarLoop]: Abstraction has 1285 states and 1875 transitions. [2021-12-14 19:54:06,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1875 transitions. [2021-12-14 19:54:06,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-14 19:54:06,637 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:06,637 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:54:06,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-14 19:54:06,638 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-14 19:54:06,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:06,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1246451369, now seen corresponding path program 1 times [2021-12-14 19:54:06,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:06,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34509212] [2021-12-14 19:54:06,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:06,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:06,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:06,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:06,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34509212] [2021-12-14 19:54:06,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34509212] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:06,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:06,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:54:06,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773049025] [2021-12-14 19:54:06,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:06,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:06,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:06,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:06,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:06,663 INFO L87 Difference]: Start difference. First operand 1285 states and 1875 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:06,676 INFO L93 Difference]: Finished difference Result 1703 states and 2436 transitions. [2021-12-14 19:54:06,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:06,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-14 19:54:06,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:06,682 INFO L225 Difference]: With dead ends: 1703 [2021-12-14 19:54:06,682 INFO L226 Difference]: Without dead ends: 1703 [2021-12-14 19:54:06,683 INFO L932 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 [2021-12-14 19:54:06,683 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 38 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:06,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 134 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:06,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2021-12-14 19:54:06,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1701. [2021-12-14 19:54:06,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1701 states, 1700 states have (on average 1.4323529411764706) internal successors, (2435), 1700 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 2435 transitions. [2021-12-14 19:54:06,721 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 2435 transitions. Word has length 21 [2021-12-14 19:54:06,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:06,722 INFO L470 AbstractCegarLoop]: Abstraction has 1701 states and 2435 transitions. [2021-12-14 19:54:06,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 2435 transitions. [2021-12-14 19:54:06,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-14 19:54:06,724 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:06,724 INFO L514 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] [2021-12-14 19:54:06,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-14 19:54:06,724 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-14 19:54:06,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:06,725 INFO L85 PathProgramCache]: Analyzing trace with hash 572308166, now seen corresponding path program 1 times [2021-12-14 19:54:06,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:06,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571062326] [2021-12-14 19:54:06,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:06,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:06,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:06,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:06,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571062326] [2021-12-14 19:54:06,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571062326] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:06,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:06,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:54:06,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657926761] [2021-12-14 19:54:06,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:06,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:06,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:06,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:06,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:06,754 INFO L87 Difference]: Start difference. First operand 1701 states and 2435 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:06,766 INFO L93 Difference]: Finished difference Result 1735 states and 2436 transitions. [2021-12-14 19:54:06,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:06,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-14 19:54:06,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:06,771 INFO L225 Difference]: With dead ends: 1735 [2021-12-14 19:54:06,771 INFO L226 Difference]: Without dead ends: 1735 [2021-12-14 19:54:06,772 INFO L932 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 [2021-12-14 19:54:06,772 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 40 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:06,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 124 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:06,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2021-12-14 19:54:06,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1733. [2021-12-14 19:54:06,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1732 states have (on average 1.4058891454965359) internal successors, (2435), 1732 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2435 transitions. [2021-12-14 19:54:06,807 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2435 transitions. Word has length 22 [2021-12-14 19:54:06,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:06,807 INFO L470 AbstractCegarLoop]: Abstraction has 1733 states and 2435 transitions. [2021-12-14 19:54:06,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2435 transitions. [2021-12-14 19:54:06,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-14 19:54:06,809 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:06,810 INFO L514 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] [2021-12-14 19:54:06,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-14 19:54:06,810 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-14 19:54:06,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:06,811 INFO L85 PathProgramCache]: Analyzing trace with hash -14497848, now seen corresponding path program 1 times [2021-12-14 19:54:06,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:06,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525897436] [2021-12-14 19:54:06,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:06,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:06,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:06,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:06,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525897436] [2021-12-14 19:54:06,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525897436] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:06,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:06,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:54:06,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567663155] [2021-12-14 19:54:06,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:06,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:06,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:06,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:06,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:06,827 INFO L87 Difference]: Start difference. First operand 1733 states and 2435 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:06,844 INFO L93 Difference]: Finished difference Result 2951 states and 4132 transitions. [2021-12-14 19:54:06,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:06,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-14 19:54:06,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:06,853 INFO L225 Difference]: With dead ends: 2951 [2021-12-14 19:54:06,853 INFO L226 Difference]: Without dead ends: 2951 [2021-12-14 19:54:06,853 INFO L932 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 [2021-12-14 19:54:06,854 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 25 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:06,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 103 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:06,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2021-12-14 19:54:06,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2565. [2021-12-14 19:54:06,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2565 states, 2564 states have (on average 1.361544461778471) internal successors, (3491), 2564 states have internal predecessors, (3491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 3491 transitions. [2021-12-14 19:54:06,912 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 3491 transitions. Word has length 22 [2021-12-14 19:54:06,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:06,913 INFO L470 AbstractCegarLoop]: Abstraction has 2565 states and 3491 transitions. [2021-12-14 19:54:06,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 3491 transitions. [2021-12-14 19:54:06,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-14 19:54:06,916 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:06,916 INFO L514 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] [2021-12-14 19:54:06,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-14 19:54:06,917 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-14 19:54:06,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:06,917 INFO L85 PathProgramCache]: Analyzing trace with hash 243667590, now seen corresponding path program 1 times [2021-12-14 19:54:06,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:06,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325906256] [2021-12-14 19:54:06,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:06,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:06,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:06,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:06,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325906256] [2021-12-14 19:54:06,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325906256] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:06,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:06,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:54:06,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971367997] [2021-12-14 19:54:06,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:06,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:06,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:06,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:06,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:06,935 INFO L87 Difference]: Start difference. First operand 2565 states and 3491 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:06,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:06,954 INFO L93 Difference]: Finished difference Result 3335 states and 4420 transitions. [2021-12-14 19:54:06,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:06,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-14 19:54:06,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:06,964 INFO L225 Difference]: With dead ends: 3335 [2021-12-14 19:54:06,964 INFO L226 Difference]: Without dead ends: 3335 [2021-12-14 19:54:06,965 INFO L932 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 [2021-12-14 19:54:06,965 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 37 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:06,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 135 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:06,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3335 states. [2021-12-14 19:54:07,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3335 to 3333. [2021-12-14 19:54:07,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3333 states, 3332 states have (on average 1.3262304921968788) internal successors, (4419), 3332 states have internal predecessors, (4419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:07,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3333 states to 3333 states and 4419 transitions. [2021-12-14 19:54:07,026 INFO L78 Accepts]: Start accepts. Automaton has 3333 states and 4419 transitions. Word has length 22 [2021-12-14 19:54:07,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:07,027 INFO L470 AbstractCegarLoop]: Abstraction has 3333 states and 4419 transitions. [2021-12-14 19:54:07,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:07,027 INFO L276 IsEmpty]: Start isEmpty. Operand 3333 states and 4419 transitions. [2021-12-14 19:54:07,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-14 19:54:07,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:07,030 INFO L514 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] [2021-12-14 19:54:07,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-14 19:54:07,031 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-14 19:54:07,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:07,031 INFO L85 PathProgramCache]: Analyzing trace with hash -449217570, now seen corresponding path program 1 times [2021-12-14 19:54:07,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:07,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687570363] [2021-12-14 19:54:07,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:07,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:07,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:07,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:07,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687570363] [2021-12-14 19:54:07,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687570363] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:07,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:07,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:54:07,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217246249] [2021-12-14 19:54:07,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:07,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:07,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:07,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:07,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:07,048 INFO L87 Difference]: Start difference. First operand 3333 states and 4419 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:07,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:07,071 INFO L93 Difference]: Finished difference Result 3399 states and 4420 transitions. [2021-12-14 19:54:07,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:07,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-14 19:54:07,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:07,081 INFO L225 Difference]: With dead ends: 3399 [2021-12-14 19:54:07,081 INFO L226 Difference]: Without dead ends: 3399 [2021-12-14 19:54:07,082 INFO L932 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 [2021-12-14 19:54:07,082 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 39 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:07,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 120 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:07,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3399 states. [2021-12-14 19:54:07,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3399 to 3397. [2021-12-14 19:54:07,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3397 states, 3396 states have (on average 1.3012367491166077) internal successors, (4419), 3396 states have internal predecessors, (4419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:07,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3397 states to 3397 states and 4419 transitions. [2021-12-14 19:54:07,157 INFO L78 Accepts]: Start accepts. Automaton has 3397 states and 4419 transitions. Word has length 23 [2021-12-14 19:54:07,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:07,158 INFO L470 AbstractCegarLoop]: Abstraction has 3397 states and 4419 transitions. [2021-12-14 19:54:07,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:07,158 INFO L276 IsEmpty]: Start isEmpty. Operand 3397 states and 4419 transitions. [2021-12-14 19:54:07,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-14 19:54:07,162 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:07,162 INFO L514 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] [2021-12-14 19:54:07,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-14 19:54:07,162 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-14 19:54:07,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:07,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1036023584, now seen corresponding path program 1 times [2021-12-14 19:54:07,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:07,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32710465] [2021-12-14 19:54:07,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:07,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:07,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:07,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:07,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32710465] [2021-12-14 19:54:07,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32710465] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:07,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:07,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:54:07,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664099025] [2021-12-14 19:54:07,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:07,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:07,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:07,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:07,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:07,181 INFO L87 Difference]: Start difference. First operand 3397 states and 4419 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:07,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:07,211 INFO L93 Difference]: Finished difference Result 5639 states and 7236 transitions. [2021-12-14 19:54:07,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:07,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-14 19:54:07,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:07,229 INFO L225 Difference]: With dead ends: 5639 [2021-12-14 19:54:07,230 INFO L226 Difference]: Without dead ends: 5639 [2021-12-14 19:54:07,230 INFO L932 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 [2021-12-14 19:54:07,231 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 22 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:07,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 101 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:07,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5639 states. [2021-12-14 19:54:07,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5639 to 5125. [2021-12-14 19:54:07,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5125 states, 5124 states have (on average 1.2620999219359874) internal successors, (6467), 5124 states have internal predecessors, (6467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:07,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 6467 transitions. [2021-12-14 19:54:07,340 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 6467 transitions. Word has length 23 [2021-12-14 19:54:07,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:07,341 INFO L470 AbstractCegarLoop]: Abstraction has 5125 states and 6467 transitions. [2021-12-14 19:54:07,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:07,341 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 6467 transitions. [2021-12-14 19:54:07,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-14 19:54:07,347 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:07,347 INFO L514 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] [2021-12-14 19:54:07,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-14 19:54:07,348 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-14 19:54:07,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:07,348 INFO L85 PathProgramCache]: Analyzing trace with hash -777858146, now seen corresponding path program 1 times [2021-12-14 19:54:07,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:07,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802408894] [2021-12-14 19:54:07,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:07,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:07,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:07,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:07,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802408894] [2021-12-14 19:54:07,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802408894] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:07,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:07,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:54:07,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113482991] [2021-12-14 19:54:07,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:07,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:07,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:07,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:07,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:07,365 INFO L87 Difference]: Start difference. First operand 5125 states and 6467 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:07,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:07,396 INFO L93 Difference]: Finished difference Result 6535 states and 7940 transitions. [2021-12-14 19:54:07,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:07,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-14 19:54:07,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:07,408 INFO L225 Difference]: With dead ends: 6535 [2021-12-14 19:54:07,408 INFO L226 Difference]: Without dead ends: 6535 [2021-12-14 19:54:07,409 INFO L932 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 [2021-12-14 19:54:07,409 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 36 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:07,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 136 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:07,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6535 states. [2021-12-14 19:54:07,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6535 to 6533. [2021-12-14 19:54:07,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6533 states, 6532 states have (on average 1.2154011022657685) internal successors, (7939), 6532 states have internal predecessors, (7939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:07,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6533 states to 6533 states and 7939 transitions. [2021-12-14 19:54:07,540 INFO L78 Accepts]: Start accepts. Automaton has 6533 states and 7939 transitions. Word has length 23 [2021-12-14 19:54:07,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:07,540 INFO L470 AbstractCegarLoop]: Abstraction has 6533 states and 7939 transitions. [2021-12-14 19:54:07,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:07,540 INFO L276 IsEmpty]: Start isEmpty. Operand 6533 states and 7939 transitions. [2021-12-14 19:54:07,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-14 19:54:07,547 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:07,547 INFO L514 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] [2021-12-14 19:54:07,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-14 19:54:07,548 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-14 19:54:07,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:07,548 INFO L85 PathProgramCache]: Analyzing trace with hash -2051743973, now seen corresponding path program 1 times [2021-12-14 19:54:07,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:07,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518372307] [2021-12-14 19:54:07,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:07,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:07,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:07,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:07,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518372307] [2021-12-14 19:54:07,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518372307] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:07,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:07,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:54:07,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022771517] [2021-12-14 19:54:07,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:07,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:07,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:07,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:07,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:07,565 INFO L87 Difference]: Start difference. First operand 6533 states and 7939 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:07,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:07,594 INFO L93 Difference]: Finished difference Result 6663 states and 7940 transitions. [2021-12-14 19:54:07,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:07,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-14 19:54:07,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:07,606 INFO L225 Difference]: With dead ends: 6663 [2021-12-14 19:54:07,607 INFO L226 Difference]: Without dead ends: 6663 [2021-12-14 19:54:07,607 INFO L932 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 [2021-12-14 19:54:07,608 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 38 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:07,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 116 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:07,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6663 states. [2021-12-14 19:54:07,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6663 to 6661. [2021-12-14 19:54:07,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6661 states, 6660 states have (on average 1.1920420420420421) internal successors, (7939), 6660 states have internal predecessors, (7939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:07,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6661 states to 6661 states and 7939 transitions. [2021-12-14 19:54:07,730 INFO L78 Accepts]: Start accepts. Automaton has 6661 states and 7939 transitions. Word has length 24 [2021-12-14 19:54:07,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:07,731 INFO L470 AbstractCegarLoop]: Abstraction has 6661 states and 7939 transitions. [2021-12-14 19:54:07,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:07,731 INFO L276 IsEmpty]: Start isEmpty. Operand 6661 states and 7939 transitions. [2021-12-14 19:54:07,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-14 19:54:07,738 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:07,738 INFO L514 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] [2021-12-14 19:54:07,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-14 19:54:07,738 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-14 19:54:07,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:07,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1656417309, now seen corresponding path program 1 times [2021-12-14 19:54:07,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:07,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056854975] [2021-12-14 19:54:07,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:07,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:07,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:07,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:07,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056854975] [2021-12-14 19:54:07,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056854975] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:07,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:07,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:54:07,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290398596] [2021-12-14 19:54:07,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:07,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:07,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:07,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:07,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:07,756 INFO L87 Difference]: Start difference. First operand 6661 states and 7939 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:07,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:07,827 INFO L93 Difference]: Finished difference Result 10757 states and 12419 transitions. [2021-12-14 19:54:07,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:07,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-14 19:54:07,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:07,848 INFO L225 Difference]: With dead ends: 10757 [2021-12-14 19:54:07,848 INFO L226 Difference]: Without dead ends: 10757 [2021-12-14 19:54:07,849 INFO L932 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 [2021-12-14 19:54:07,849 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 18 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:07,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 98 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:07,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10757 states. [2021-12-14 19:54:08,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10757 to 10245. [2021-12-14 19:54:08,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10245 states, 10244 states have (on average 1.1623389301054277) internal successors, (11907), 10244 states have internal predecessors, (11907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:08,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10245 states to 10245 states and 11907 transitions. [2021-12-14 19:54:08,052 INFO L78 Accepts]: Start accepts. Automaton has 10245 states and 11907 transitions. Word has length 24 [2021-12-14 19:54:08,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:08,052 INFO L470 AbstractCegarLoop]: Abstraction has 10245 states and 11907 transitions. [2021-12-14 19:54:08,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:08,053 INFO L276 IsEmpty]: Start isEmpty. Operand 10245 states and 11907 transitions. [2021-12-14 19:54:08,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-14 19:54:08,065 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:54:08,065 INFO L514 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] [2021-12-14 19:54:08,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-14 19:54:08,065 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-14 19:54:08,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:54:08,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1914582747, now seen corresponding path program 1 times [2021-12-14 19:54:08,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:54:08,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125159327] [2021-12-14 19:54:08,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:54:08,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:54:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:54:08,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:54:08,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:54:08,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125159327] [2021-12-14 19:54:08,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125159327] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:54:08,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:54:08,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:54:08,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221982637] [2021-12-14 19:54:08,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:54:08,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:54:08,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:54:08,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:54:08,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:54:08,082 INFO L87 Difference]: Start difference. First operand 10245 states and 11907 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:08,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:54:08,136 INFO L93 Difference]: Finished difference Result 12803 states and 14082 transitions. [2021-12-14 19:54:08,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:54:08,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-14 19:54:08,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:54:08,137 INFO L225 Difference]: With dead ends: 12803 [2021-12-14 19:54:08,137 INFO L226 Difference]: Without dead ends: 0 [2021-12-14 19:54:08,137 INFO L932 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 [2021-12-14 19:54:08,138 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 34 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:54:08,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 135 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:54:08,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-14 19:54:08,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-14 19:54:08,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:08,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-14 19:54:08,139 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2021-12-14 19:54:08,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:54:08,139 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 19:54:08,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 19:54:08,140 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-14 19:54:08,140 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-14 19:54:08,142 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2021-12-14 19:54:08,143 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2021-12-14 19:54:08,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-14 19:54:08,146 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:54:08,147 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 19:54:08,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 07:54:08 BoogieIcfgContainer [2021-12-14 19:54:08,149 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 19:54:08,150 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 19:54:08,150 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 19:54:08,150 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 19:54:08,150 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:54:05" (3/4) ... [2021-12-14 19:54:08,153 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-14 19:54:08,162 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-12-14 19:54:08,163 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-14 19:54:08,163 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-12-14 19:54:08,163 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-14 19:54:08,193 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 19:54:08,193 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 19:54:08,193 INFO L158 Benchmark]: Toolchain (without parser) took 3820.96ms. Allocated memory was 107.0MB in the beginning and 270.5MB in the end (delta: 163.6MB). Free memory was 70.3MB in the beginning and 122.0MB in the end (delta: -51.6MB). Peak memory consumption was 111.0MB. Max. memory is 16.1GB. [2021-12-14 19:54:08,194 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 107.0MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 19:54:08,194 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.49ms. Allocated memory is still 107.0MB. Free memory was 70.1MB in the beginning and 82.6MB in the end (delta: -12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 19:54:08,194 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.49ms. Allocated memory is still 107.0MB. Free memory was 82.6MB in the beginning and 80.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 19:54:08,194 INFO L158 Benchmark]: Boogie Preprocessor took 40.83ms. Allocated memory is still 107.0MB. Free memory was 80.9MB in the beginning and 79.5MB in the end (delta: 1.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-14 19:54:08,194 INFO L158 Benchmark]: RCFGBuilder took 321.81ms. Allocated memory is still 107.0MB. Free memory was 79.5MB in the beginning and 67.3MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-14 19:54:08,195 INFO L158 Benchmark]: TraceAbstraction took 3075.63ms. Allocated memory was 107.0MB in the beginning and 270.5MB in the end (delta: 163.6MB). Free memory was 66.6MB in the beginning and 125.1MB in the end (delta: -58.5MB). Peak memory consumption was 107.5MB. Max. memory is 16.1GB. [2021-12-14 19:54:08,195 INFO L158 Benchmark]: Witness Printer took 43.33ms. Allocated memory is still 270.5MB. Free memory was 125.1MB in the beginning and 122.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 19:54:08,196 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 107.0MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 288.49ms. Allocated memory is still 107.0MB. Free memory was 70.1MB in the beginning and 82.6MB in the end (delta: -12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.49ms. Allocated memory is still 107.0MB. Free memory was 82.6MB in the beginning and 80.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.83ms. Allocated memory is still 107.0MB. Free memory was 80.9MB in the beginning and 79.5MB in the end (delta: 1.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 321.81ms. Allocated memory is still 107.0MB. Free memory was 79.5MB in the beginning and 67.3MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3075.63ms. Allocated memory was 107.0MB in the beginning and 270.5MB in the end (delta: 163.6MB). Free memory was 66.6MB in the beginning and 125.1MB in the end (delta: -58.5MB). Peak memory consumption was 107.5MB. Max. memory is 16.1GB. * Witness Printer took 43.33ms. Allocated memory is still 270.5MB. Free memory was 125.1MB in the beginning and 122.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 149]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 3.0s, OverallIterations: 27, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 974 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 974 mSDsluCounter, 3211 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1228 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 134 IncrementalHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 1983 mSDtfsCounter, 134 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10245occurred in iteration=26, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 27 MinimizatonAttempts, 2072 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 516 NumberOfCodeBlocks, 516 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 489 ConstructedInterpolants, 0 QuantifiedInterpolants, 1028 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-14 19:54:08,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE