./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/locks/test_locks_13.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e19ca921 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_13.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 8fd6142dd23f608c3bc9ae24389b4aee583128e9e6b549483298584de0c08ecd --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 16:47:49,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 16:47:49,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 16:47:49,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 16:47:49,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 16:47:49,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 16:47:49,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 16:47:49,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 16:47:49,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 16:47:49,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 16:47:49,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 16:47:49,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 16:47:49,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 16:47:49,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 16:47:49,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 16:47:49,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 16:47:49,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 16:47:49,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 16:47:49,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 16:47:49,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 16:47:49,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 16:47:49,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 16:47:49,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 16:47:49,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 16:47:49,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 16:47:49,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 16:47:49,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 16:47:49,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 16:47:49,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 16:47:49,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 16:47:49,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 16:47:49,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 16:47:49,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 16:47:49,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 16:47:49,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 16:47:49,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 16:47:49,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 16:47:49,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 16:47:49,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 16:47:49,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 16:47:49,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 16:47:49,569 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-22 16:47:49,594 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 16:47:49,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 16:47:49,595 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 16:47:49,595 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 16:47:49,596 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 16:47:49,596 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 16:47:49,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 16:47:49,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 16:47:49,597 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 16:47:49,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 16:47:49,598 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 16:47:49,598 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 16:47:49,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 16:47:49,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 16:47:49,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 16:47:49,598 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-22 16:47:49,599 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-22 16:47:49,599 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-22 16:47:49,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 16:47:49,599 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 16:47:49,599 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 16:47:49,599 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 16:47:49,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 16:47:49,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 16:47:49,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 16:47:49,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 16:47:49,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 16:47:49,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 16:47:49,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 16:47:49,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 16:47:49,601 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 16:47:49,601 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fd6142dd23f608c3bc9ae24389b4aee583128e9e6b549483298584de0c08ecd [2021-12-22 16:47:49,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 16:47:49,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 16:47:49,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 16:47:49,801 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 16:47:49,802 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 16:47:49,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_13.c [2021-12-22 16:47:49,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b565d738b/18e3e94195bc44ccbe062f68b8b5e057/FLAG224c26f5a [2021-12-22 16:47:50,220 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 16:47:50,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_13.c [2021-12-22 16:47:50,225 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b565d738b/18e3e94195bc44ccbe062f68b8b5e057/FLAG224c26f5a [2021-12-22 16:47:50,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b565d738b/18e3e94195bc44ccbe062f68b8b5e057 [2021-12-22 16:47:50,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 16:47:50,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 16:47:50,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 16:47:50,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 16:47:50,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 16:47:50,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:47:50" (1/1) ... [2021-12-22 16:47:50,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@263c7fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:47:50, skipping insertion in model container [2021-12-22 16:47:50,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:47:50" (1/1) ... [2021-12-22 16:47:50,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 16:47:50,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 16:47:50,395 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_13.c[4936,4949] [2021-12-22 16:47:50,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 16:47:50,402 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 16:47:50,418 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_13.c[4936,4949] [2021-12-22 16:47:50,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 16:47:50,427 INFO L208 MainTranslator]: Completed translation [2021-12-22 16:47:50,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:47:50 WrapperNode [2021-12-22 16:47:50,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 16:47:50,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 16:47:50,428 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 16:47:50,428 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 16:47:50,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:47:50" (1/1) ... [2021-12-22 16:47:50,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:47:50" (1/1) ... [2021-12-22 16:47:50,454 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 171 [2021-12-22 16:47:50,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 16:47:50,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 16:47:50,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 16:47:50,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 16:47:50,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:47:50" (1/1) ... [2021-12-22 16:47:50,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:47:50" (1/1) ... [2021-12-22 16:47:50,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:47:50" (1/1) ... [2021-12-22 16:47:50,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:47:50" (1/1) ... [2021-12-22 16:47:50,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:47:50" (1/1) ... [2021-12-22 16:47:50,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:47:50" (1/1) ... [2021-12-22 16:47:50,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:47:50" (1/1) ... [2021-12-22 16:47:50,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 16:47:50,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 16:47:50,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 16:47:50,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 16:47:50,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:47:50" (1/1) ... [2021-12-22 16:47:50,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 16:47:50,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:47:50,517 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) [2021-12-22 16:47:50,519 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 [2021-12-22 16:47:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 16:47:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 16:47:50,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 16:47:50,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 16:47:50,597 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 16:47:50,598 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 16:47:50,727 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 16:47:50,733 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 16:47:50,733 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 16:47:50,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:47:50 BoogieIcfgContainer [2021-12-22 16:47:50,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 16:47:50,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 16:47:50,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 16:47:50,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 16:47:50,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:47:50" (1/3) ... [2021-12-22 16:47:50,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a53438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:47:50, skipping insertion in model container [2021-12-22 16:47:50,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:47:50" (2/3) ... [2021-12-22 16:47:50,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a53438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:47:50, skipping insertion in model container [2021-12-22 16:47:50,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:47:50" (3/3) ... [2021-12-22 16:47:50,741 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_13.c [2021-12-22 16:47:50,744 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 16:47:50,744 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 16:47:50,772 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 16:47:50,777 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 [2021-12-22 16:47:50,777 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 16:47:50,787 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 49 states have internal predecessors, (91), 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) [2021-12-22 16:47:50,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-22 16:47:50,791 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:50,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-22 16:47:50,792 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:50,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:50,796 INFO L85 PathProgramCache]: Analyzing trace with hash 28705099, now seen corresponding path program 1 times [2021-12-22 16:47:50,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:50,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398002779] [2021-12-22 16:47:50,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:50,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:51,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:51,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:51,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398002779] [2021-12-22 16:47:51,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398002779] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:51,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:51,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 16:47:51,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310186612] [2021-12-22 16:47:51,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:51,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 16:47:51,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:51,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 16:47:51,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 16:47:51,035 INFO L87 Difference]: Start difference. First operand has 50 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 49 states have internal predecessors, (91), 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) [2021-12-22 16:47:51,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:51,052 INFO L93 Difference]: Finished difference Result 50 states and 88 transitions. [2021-12-22 16:47:51,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 16:47:51,054 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 [2021-12-22 16:47:51,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:51,060 INFO L225 Difference]: With dead ends: 50 [2021-12-22 16:47:51,061 INFO L226 Difference]: Without dead ends: 48 [2021-12-22 16:47:51,063 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 [2021-12-22 16:47:51,066 INFO L933 BasicCegarLoop]: 88 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, 88 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 [2021-12-22 16:47:51,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:51,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-12-22 16:47:51,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-12-22 16:47:51,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 46 states have (on average 1.8695652173913044) internal successors, (86), 47 states have internal predecessors, (86), 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) [2021-12-22 16:47:51,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 86 transitions. [2021-12-22 16:47:51,101 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 86 transitions. Word has length 5 [2021-12-22 16:47:51,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:51,101 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 86 transitions. [2021-12-22 16:47:51,101 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) [2021-12-22 16:47:51,102 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 86 transitions. [2021-12-22 16:47:51,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-22 16:47:51,102 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:51,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-22 16:47:51,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 16:47:51,103 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:51,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:51,106 INFO L85 PathProgramCache]: Analyzing trace with hash 889699595, now seen corresponding path program 1 times [2021-12-22 16:47:51,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:51,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532591054] [2021-12-22 16:47:51,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:51,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:51,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:51,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532591054] [2021-12-22 16:47:51,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532591054] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:51,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:51,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 16:47:51,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713005560] [2021-12-22 16:47:51,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:51,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:51,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:51,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:51,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:51,184 INFO L87 Difference]: Start difference. First operand 48 states and 86 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) [2021-12-22 16:47:51,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:51,193 INFO L93 Difference]: Finished difference Result 47 states and 85 transitions. [2021-12-22 16:47:51,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:51,193 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 [2021-12-22 16:47:51,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:51,194 INFO L225 Difference]: With dead ends: 47 [2021-12-22 16:47:51,194 INFO L226 Difference]: Without dead ends: 45 [2021-12-22 16:47:51,194 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 [2021-12-22 16:47:51,195 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 80 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 85 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 [2021-12-22 16:47:51,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 85 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:51,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-12-22 16:47:51,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-12-22 16:47:51,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.8863636363636365) internal successors, (83), 44 states have internal predecessors, (83), 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) [2021-12-22 16:47:51,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 83 transitions. [2021-12-22 16:47:51,201 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 83 transitions. Word has length 6 [2021-12-22 16:47:51,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:51,202 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 83 transitions. [2021-12-22 16:47:51,202 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) [2021-12-22 16:47:51,202 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 83 transitions. [2021-12-22 16:47:51,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-22 16:47:51,204 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:51,204 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] [2021-12-22 16:47:51,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 16:47:51,205 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:51,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:51,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1359894467, now seen corresponding path program 1 times [2021-12-22 16:47:51,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:51,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277334442] [2021-12-22 16:47:51,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:51,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:51,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:51,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:51,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277334442] [2021-12-22 16:47:51,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277334442] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:51,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:51,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:51,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467133864] [2021-12-22 16:47:51,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:51,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:51,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:51,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:51,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:51,246 INFO L87 Difference]: Start difference. First operand 45 states and 83 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) [2021-12-22 16:47:51,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:51,263 INFO L93 Difference]: Finished difference Result 87 states and 161 transitions. [2021-12-22 16:47:51,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:51,263 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 [2021-12-22 16:47:51,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:51,266 INFO L225 Difference]: With dead ends: 87 [2021-12-22 16:47:51,266 INFO L226 Difference]: Without dead ends: 87 [2021-12-22 16:47:51,266 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 [2021-12-22 16:47:51,267 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 63 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 163 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 [2021-12-22 16:47:51,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 163 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:51,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-12-22 16:47:51,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 59. [2021-12-22 16:47:51,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.896551724137931) internal successors, (110), 58 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) [2021-12-22 16:47:51,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 110 transitions. [2021-12-22 16:47:51,274 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 110 transitions. Word has length 20 [2021-12-22 16:47:51,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:51,275 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 110 transitions. [2021-12-22 16:47:51,275 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) [2021-12-22 16:47:51,275 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 110 transitions. [2021-12-22 16:47:51,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-22 16:47:51,276 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:51,276 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] [2021-12-22 16:47:51,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 16:47:51,276 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:51,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:51,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1914004475, now seen corresponding path program 1 times [2021-12-22 16:47:51,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:51,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858946881] [2021-12-22 16:47:51,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:51,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:51,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:51,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:51,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858946881] [2021-12-22 16:47:51,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858946881] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:51,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:51,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:51,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38461117] [2021-12-22 16:47:51,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:51,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:51,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:51,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:51,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:51,321 INFO L87 Difference]: Start difference. First operand 59 states and 110 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) [2021-12-22 16:47:51,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:51,335 INFO L93 Difference]: Finished difference Result 87 states and 159 transitions. [2021-12-22 16:47:51,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:51,336 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 [2021-12-22 16:47:51,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:51,337 INFO L225 Difference]: With dead ends: 87 [2021-12-22 16:47:51,337 INFO L226 Difference]: Without dead ends: 87 [2021-12-22 16:47:51,338 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 [2021-12-22 16:47:51,339 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 63 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 185 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 [2021-12-22 16:47:51,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 185 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:51,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-12-22 16:47:51,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2021-12-22 16:47:51,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.880952380952381) internal successors, (158), 84 states have internal predecessors, (158), 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) [2021-12-22 16:47:51,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 158 transitions. [2021-12-22 16:47:51,346 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 158 transitions. Word has length 20 [2021-12-22 16:47:51,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:51,346 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 158 transitions. [2021-12-22 16:47:51,347 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) [2021-12-22 16:47:51,347 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 158 transitions. [2021-12-22 16:47:51,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-22 16:47:51,347 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:51,347 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] [2021-12-22 16:47:51,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 16:47:51,348 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:51,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:51,350 INFO L85 PathProgramCache]: Analyzing trace with hash 793156859, now seen corresponding path program 1 times [2021-12-22 16:47:51,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:51,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955289292] [2021-12-22 16:47:51,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:51,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:51,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:51,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:51,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955289292] [2021-12-22 16:47:51,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955289292] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:51,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:51,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:51,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239182514] [2021-12-22 16:47:51,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:51,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:51,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:51,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:51,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:51,418 INFO L87 Difference]: Start difference. First operand 85 states and 158 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) [2021-12-22 16:47:51,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:51,433 INFO L93 Difference]: Finished difference Result 90 states and 161 transitions. [2021-12-22 16:47:51,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:51,434 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 [2021-12-22 16:47:51,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:51,434 INFO L225 Difference]: With dead ends: 90 [2021-12-22 16:47:51,435 INFO L226 Difference]: Without dead ends: 90 [2021-12-22 16:47:51,435 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 [2021-12-22 16:47:51,436 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 65 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 208 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 [2021-12-22 16:47:51,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 208 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:51,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-12-22 16:47:51,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2021-12-22 16:47:51,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.839080459770115) internal successors, (160), 87 states have internal predecessors, (160), 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) [2021-12-22 16:47:51,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 160 transitions. [2021-12-22 16:47:51,449 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 160 transitions. Word has length 21 [2021-12-22 16:47:51,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:51,450 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 160 transitions. [2021-12-22 16:47:51,450 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) [2021-12-22 16:47:51,452 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 160 transitions. [2021-12-22 16:47:51,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-22 16:47:51,453 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:51,453 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] [2021-12-22 16:47:51,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 16:47:51,453 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:51,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:51,454 INFO L85 PathProgramCache]: Analyzing trace with hash -795191043, now seen corresponding path program 1 times [2021-12-22 16:47:51,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:51,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259697346] [2021-12-22 16:47:51,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:51,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:51,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:51,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:51,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259697346] [2021-12-22 16:47:51,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259697346] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:51,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:51,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:51,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259335654] [2021-12-22 16:47:51,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:51,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:51,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:51,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:51,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:51,481 INFO L87 Difference]: Start difference. First operand 88 states and 160 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) [2021-12-22 16:47:51,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:51,492 INFO L93 Difference]: Finished difference Result 167 states and 306 transitions. [2021-12-22 16:47:51,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:51,493 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 [2021-12-22 16:47:51,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:51,494 INFO L225 Difference]: With dead ends: 167 [2021-12-22 16:47:51,494 INFO L226 Difference]: Without dead ends: 167 [2021-12-22 16:47:51,494 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 [2021-12-22 16:47:51,495 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 60 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 161 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 [2021-12-22 16:47:51,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 161 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:51,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-12-22 16:47:51,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 117. [2021-12-22 16:47:51,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.8362068965517242) internal successors, (213), 116 states have internal predecessors, (213), 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) [2021-12-22 16:47:51,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 213 transitions. [2021-12-22 16:47:51,513 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 213 transitions. Word has length 21 [2021-12-22 16:47:51,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:51,513 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 213 transitions. [2021-12-22 16:47:51,513 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) [2021-12-22 16:47:51,514 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 213 transitions. [2021-12-22 16:47:51,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-22 16:47:51,514 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:51,514 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] [2021-12-22 16:47:51,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 16:47:51,515 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:51,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:51,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1816259397, now seen corresponding path program 1 times [2021-12-22 16:47:51,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:51,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036963672] [2021-12-22 16:47:51,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:51,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:51,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:51,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:51,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036963672] [2021-12-22 16:47:51,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036963672] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:51,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:51,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:51,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532472413] [2021-12-22 16:47:51,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:51,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:51,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:51,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:51,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:51,544 INFO L87 Difference]: Start difference. First operand 117 states and 213 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) [2021-12-22 16:47:51,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:51,555 INFO L93 Difference]: Finished difference Result 169 states and 304 transitions. [2021-12-22 16:47:51,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:51,555 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 [2021-12-22 16:47:51,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:51,556 INFO L225 Difference]: With dead ends: 169 [2021-12-22 16:47:51,557 INFO L226 Difference]: Without dead ends: 169 [2021-12-22 16:47:51,557 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 [2021-12-22 16:47:51,558 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 62 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 186 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 [2021-12-22 16:47:51,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 186 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:51,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-12-22 16:47:51,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2021-12-22 16:47:51,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.8253012048192772) internal successors, (303), 166 states have internal predecessors, (303), 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) [2021-12-22 16:47:51,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 303 transitions. [2021-12-22 16:47:51,564 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 303 transitions. Word has length 21 [2021-12-22 16:47:51,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:51,564 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 303 transitions. [2021-12-22 16:47:51,564 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) [2021-12-22 16:47:51,564 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 303 transitions. [2021-12-22 16:47:51,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-22 16:47:51,565 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:51,565 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] [2021-12-22 16:47:51,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 16:47:51,566 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:51,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:51,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1119094160, now seen corresponding path program 1 times [2021-12-22 16:47:51,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:51,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154820560] [2021-12-22 16:47:51,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:51,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:51,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:51,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:51,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154820560] [2021-12-22 16:47:51,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154820560] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:51,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:51,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:51,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764215510] [2021-12-22 16:47:51,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:51,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:51,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:51,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:51,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:51,596 INFO L87 Difference]: Start difference. First operand 167 states and 303 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) [2021-12-22 16:47:51,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:51,605 INFO L93 Difference]: Finished difference Result 171 states and 304 transitions. [2021-12-22 16:47:51,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:51,605 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 [2021-12-22 16:47:51,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:51,606 INFO L225 Difference]: With dead ends: 171 [2021-12-22 16:47:51,606 INFO L226 Difference]: Without dead ends: 171 [2021-12-22 16:47:51,606 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 [2021-12-22 16:47:51,607 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 64 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 204 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 [2021-12-22 16:47:51,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 204 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:51,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-12-22 16:47:51,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2021-12-22 16:47:51,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.8035714285714286) internal successors, (303), 168 states have internal predecessors, (303), 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) [2021-12-22 16:47:51,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 303 transitions. [2021-12-22 16:47:51,613 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 303 transitions. Word has length 22 [2021-12-22 16:47:51,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:51,613 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 303 transitions. [2021-12-22 16:47:51,614 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) [2021-12-22 16:47:51,614 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 303 transitions. [2021-12-22 16:47:51,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-22 16:47:51,614 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:51,615 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] [2021-12-22 16:47:51,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 16:47:51,615 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:51,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:51,616 INFO L85 PathProgramCache]: Analyzing trace with hash -469253742, now seen corresponding path program 1 times [2021-12-22 16:47:51,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:51,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267396044] [2021-12-22 16:47:51,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:51,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:51,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:51,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:51,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267396044] [2021-12-22 16:47:51,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267396044] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:51,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:51,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:51,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704183275] [2021-12-22 16:47:51,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:51,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:51,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:51,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:51,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:51,638 INFO L87 Difference]: Start difference. First operand 169 states and 303 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) [2021-12-22 16:47:51,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:51,655 INFO L93 Difference]: Finished difference Result 327 states and 580 transitions. [2021-12-22 16:47:51,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:51,655 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 [2021-12-22 16:47:51,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:51,658 INFO L225 Difference]: With dead ends: 327 [2021-12-22 16:47:51,658 INFO L226 Difference]: Without dead ends: 327 [2021-12-22 16:47:51,658 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 [2021-12-22 16:47:51,659 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 62 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 163 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 [2021-12-22 16:47:51,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 163 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:51,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-12-22 16:47:51,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 325. [2021-12-22 16:47:51,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 1.787037037037037) internal successors, (579), 324 states have internal predecessors, (579), 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) [2021-12-22 16:47:51,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 579 transitions. [2021-12-22 16:47:51,671 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 579 transitions. Word has length 22 [2021-12-22 16:47:51,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:51,671 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 579 transitions. [2021-12-22 16:47:51,671 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) [2021-12-22 16:47:51,671 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 579 transitions. [2021-12-22 16:47:51,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-22 16:47:51,672 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:51,673 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] [2021-12-22 16:47:51,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 16:47:51,673 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:51,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:51,673 INFO L85 PathProgramCache]: Analyzing trace with hash 551814612, now seen corresponding path program 1 times [2021-12-22 16:47:51,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:51,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427552776] [2021-12-22 16:47:51,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:51,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:51,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:51,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:51,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427552776] [2021-12-22 16:47:51,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427552776] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:51,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:51,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:51,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883841128] [2021-12-22 16:47:51,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:51,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:51,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:51,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:51,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:51,710 INFO L87 Difference]: Start difference. First operand 325 states and 579 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) [2021-12-22 16:47:51,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:51,721 INFO L93 Difference]: Finished difference Result 415 states and 744 transitions. [2021-12-22 16:47:51,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:51,722 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 [2021-12-22 16:47:51,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:51,724 INFO L225 Difference]: With dead ends: 415 [2021-12-22 16:47:51,724 INFO L226 Difference]: Without dead ends: 415 [2021-12-22 16:47:51,724 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 [2021-12-22 16:47:51,725 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 57 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 224 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 [2021-12-22 16:47:51,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 224 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:51,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-12-22 16:47:51,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 325. [2021-12-22 16:47:51,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 1.7746913580246915) internal successors, (575), 324 states have internal predecessors, (575), 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) [2021-12-22 16:47:51,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 575 transitions. [2021-12-22 16:47:51,742 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 575 transitions. Word has length 22 [2021-12-22 16:47:51,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:51,742 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 575 transitions. [2021-12-22 16:47:51,743 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) [2021-12-22 16:47:51,743 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 575 transitions. [2021-12-22 16:47:51,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-22 16:47:51,746 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:51,746 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] [2021-12-22 16:47:51,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 16:47:51,747 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:51,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:51,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1661751056, now seen corresponding path program 1 times [2021-12-22 16:47:51,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:51,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841720825] [2021-12-22 16:47:51,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:51,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:51,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:51,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:51,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841720825] [2021-12-22 16:47:51,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841720825] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:51,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:51,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:51,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919870700] [2021-12-22 16:47:51,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:51,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:51,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:51,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:51,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:51,769 INFO L87 Difference]: Start difference. First operand 325 states and 575 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) [2021-12-22 16:47:51,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:51,779 INFO L93 Difference]: Finished difference Result 611 states and 1088 transitions. [2021-12-22 16:47:51,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:51,780 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 [2021-12-22 16:47:51,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:51,782 INFO L225 Difference]: With dead ends: 611 [2021-12-22 16:47:51,782 INFO L226 Difference]: Without dead ends: 611 [2021-12-22 16:47:51,782 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 [2021-12-22 16:47:51,783 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 54 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 157 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 [2021-12-22 16:47:51,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 157 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:51,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-12-22 16:47:51,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 449. [2021-12-22 16:47:51,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.7477678571428572) internal successors, (783), 448 states have internal predecessors, (783), 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) [2021-12-22 16:47:51,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 783 transitions. [2021-12-22 16:47:51,792 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 783 transitions. Word has length 23 [2021-12-22 16:47:51,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:51,794 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 783 transitions. [2021-12-22 16:47:51,794 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) [2021-12-22 16:47:51,794 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 783 transitions. [2021-12-22 16:47:51,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-22 16:47:51,797 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:51,797 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] [2021-12-22 16:47:51,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 16:47:51,800 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:51,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:51,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1612147886, now seen corresponding path program 1 times [2021-12-22 16:47:51,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:51,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838529365] [2021-12-22 16:47:51,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:51,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:51,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:51,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:51,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838529365] [2021-12-22 16:47:51,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838529365] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:51,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:51,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:51,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270875902] [2021-12-22 16:47:51,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:51,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:51,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:51,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:51,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:51,829 INFO L87 Difference]: Start difference. First operand 449 states and 783 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) [2021-12-22 16:47:51,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:51,841 INFO L93 Difference]: Finished difference Result 635 states and 1100 transitions. [2021-12-22 16:47:51,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:51,841 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 [2021-12-22 16:47:51,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:51,843 INFO L225 Difference]: With dead ends: 635 [2021-12-22 16:47:51,843 INFO L226 Difference]: Without dead ends: 635 [2021-12-22 16:47:51,843 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 [2021-12-22 16:47:51,845 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 60 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 188 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 [2021-12-22 16:47:51,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 188 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:51,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2021-12-22 16:47:51,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 633. [2021-12-22 16:47:51,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 632 states have (on average 1.7389240506329113) internal successors, (1099), 632 states have internal predecessors, (1099), 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) [2021-12-22 16:47:51,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1099 transitions. [2021-12-22 16:47:51,855 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1099 transitions. Word has length 23 [2021-12-22 16:47:51,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:51,855 INFO L470 AbstractCegarLoop]: Abstraction has 633 states and 1099 transitions. [2021-12-22 16:47:51,856 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) [2021-12-22 16:47:51,856 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1099 transitions. [2021-12-22 16:47:51,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-22 16:47:51,856 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:51,857 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] [2021-12-22 16:47:51,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 16:47:51,857 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:51,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:51,857 INFO L85 PathProgramCache]: Analyzing trace with hash 25538215, now seen corresponding path program 1 times [2021-12-22 16:47:51,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:51,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031507994] [2021-12-22 16:47:51,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:51,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:51,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:51,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:51,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:51,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031507994] [2021-12-22 16:47:51,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031507994] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:51,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:51,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:51,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18318611] [2021-12-22 16:47:51,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:51,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:51,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:51,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:51,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:51,903 INFO L87 Difference]: Start difference. First operand 633 states and 1099 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) [2021-12-22 16:47:51,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:51,911 INFO L93 Difference]: Finished difference Result 647 states and 1108 transitions. [2021-12-22 16:47:51,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:51,912 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 [2021-12-22 16:47:51,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:51,914 INFO L225 Difference]: With dead ends: 647 [2021-12-22 16:47:51,914 INFO L226 Difference]: Without dead ends: 647 [2021-12-22 16:47:51,914 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 [2021-12-22 16:47:51,915 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 62 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 196 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 [2021-12-22 16:47:51,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 196 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:51,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2021-12-22 16:47:51,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 645. [2021-12-22 16:47:51,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 644 states have (on average 1.718944099378882) internal successors, (1107), 644 states have internal predecessors, (1107), 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) [2021-12-22 16:47:51,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1107 transitions. [2021-12-22 16:47:51,936 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1107 transitions. Word has length 24 [2021-12-22 16:47:51,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:51,937 INFO L470 AbstractCegarLoop]: Abstraction has 645 states and 1107 transitions. [2021-12-22 16:47:51,937 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) [2021-12-22 16:47:51,937 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1107 transitions. [2021-12-22 16:47:51,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-22 16:47:51,938 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:51,938 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] [2021-12-22 16:47:51,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 16:47:51,939 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:51,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:51,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1562809687, now seen corresponding path program 1 times [2021-12-22 16:47:51,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:51,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761727173] [2021-12-22 16:47:51,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:51,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:51,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:51,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:51,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761727173] [2021-12-22 16:47:51,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761727173] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:51,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:51,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:51,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680685953] [2021-12-22 16:47:51,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:51,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:51,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:51,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:51,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:51,973 INFO L87 Difference]: Start difference. First operand 645 states and 1107 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) [2021-12-22 16:47:51,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:51,985 INFO L93 Difference]: Finished difference Result 1191 states and 2060 transitions. [2021-12-22 16:47:51,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:51,985 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 [2021-12-22 16:47:51,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:51,989 INFO L225 Difference]: With dead ends: 1191 [2021-12-22 16:47:51,989 INFO L226 Difference]: Without dead ends: 1191 [2021-12-22 16:47:51,989 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 [2021-12-22 16:47:51,990 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 51 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 155 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 [2021-12-22 16:47:51,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 155 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:51,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2021-12-22 16:47:52,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 901. [2021-12-22 16:47:52,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 900 states have (on average 1.6833333333333333) internal successors, (1515), 900 states have internal predecessors, (1515), 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) [2021-12-22 16:47:52,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1515 transitions. [2021-12-22 16:47:52,003 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1515 transitions. Word has length 24 [2021-12-22 16:47:52,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:52,003 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1515 transitions. [2021-12-22 16:47:52,004 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) [2021-12-22 16:47:52,004 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1515 transitions. [2021-12-22 16:47:52,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-22 16:47:52,005 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:52,006 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] [2021-12-22 16:47:52,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 16:47:52,006 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:52,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:52,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1711089255, now seen corresponding path program 1 times [2021-12-22 16:47:52,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:52,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868293168] [2021-12-22 16:47:52,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:52,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:52,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:52,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:52,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868293168] [2021-12-22 16:47:52,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868293168] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:52,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:52,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:52,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942248732] [2021-12-22 16:47:52,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:52,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:52,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:52,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:52,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:52,044 INFO L87 Difference]: Start difference. First operand 901 states and 1515 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) [2021-12-22 16:47:52,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:52,057 INFO L93 Difference]: Finished difference Result 1255 states and 2100 transitions. [2021-12-22 16:47:52,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:52,057 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 [2021-12-22 16:47:52,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:52,060 INFO L225 Difference]: With dead ends: 1255 [2021-12-22 16:47:52,060 INFO L226 Difference]: Without dead ends: 1255 [2021-12-22 16:47:52,061 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 [2021-12-22 16:47:52,063 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 59 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 189 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 [2021-12-22 16:47:52,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 189 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:52,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2021-12-22 16:47:52,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1253. [2021-12-22 16:47:52,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 1252 states have (on average 1.676517571884984) internal successors, (2099), 1252 states have internal predecessors, (2099), 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) [2021-12-22 16:47:52,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 2099 transitions. [2021-12-22 16:47:52,079 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 2099 transitions. Word has length 24 [2021-12-22 16:47:52,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:52,079 INFO L470 AbstractCegarLoop]: Abstraction has 1253 states and 2099 transitions. [2021-12-22 16:47:52,079 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) [2021-12-22 16:47:52,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 2099 transitions. [2021-12-22 16:47:52,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-22 16:47:52,080 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:52,080 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, 1] [2021-12-22 16:47:52,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 16:47:52,081 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:52,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:52,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1202246301, now seen corresponding path program 1 times [2021-12-22 16:47:52,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:52,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119780817] [2021-12-22 16:47:52,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:52,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:52,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:52,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119780817] [2021-12-22 16:47:52,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119780817] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:52,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:52,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:52,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820837879] [2021-12-22 16:47:52,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:52,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:52,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:52,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:52,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:52,116 INFO L87 Difference]: Start difference. First operand 1253 states and 2099 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-12-22 16:47:52,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:52,127 INFO L93 Difference]: Finished difference Result 1271 states and 2100 transitions. [2021-12-22 16:47:52,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:52,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2021-12-22 16:47:52,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:52,131 INFO L225 Difference]: With dead ends: 1271 [2021-12-22 16:47:52,131 INFO L226 Difference]: Without dead ends: 1271 [2021-12-22 16:47:52,131 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 [2021-12-22 16:47:52,131 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 61 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 192 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 [2021-12-22 16:47:52,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 192 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:52,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2021-12-22 16:47:52,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1269. [2021-12-22 16:47:52,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1268 states have (on average 1.6553627760252365) internal successors, (2099), 1268 states have internal predecessors, (2099), 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) [2021-12-22 16:47:52,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 2099 transitions. [2021-12-22 16:47:52,148 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 2099 transitions. Word has length 25 [2021-12-22 16:47:52,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:52,148 INFO L470 AbstractCegarLoop]: Abstraction has 1269 states and 2099 transitions. [2021-12-22 16:47:52,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-12-22 16:47:52,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 2099 transitions. [2021-12-22 16:47:52,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-22 16:47:52,149 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:52,150 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, 1] [2021-12-22 16:47:52,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 16:47:52,150 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:52,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:52,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1504373093, now seen corresponding path program 1 times [2021-12-22 16:47:52,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:52,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805990960] [2021-12-22 16:47:52,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:52,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:52,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:52,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:52,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805990960] [2021-12-22 16:47:52,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805990960] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:52,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:52,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:52,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535668666] [2021-12-22 16:47:52,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:52,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:52,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:52,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:52,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:52,174 INFO L87 Difference]: Start difference. First operand 1269 states and 2099 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-12-22 16:47:52,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:52,192 INFO L93 Difference]: Finished difference Result 2311 states and 3860 transitions. [2021-12-22 16:47:52,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:52,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2021-12-22 16:47:52,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:52,198 INFO L225 Difference]: With dead ends: 2311 [2021-12-22 16:47:52,198 INFO L226 Difference]: Without dead ends: 2311 [2021-12-22 16:47:52,198 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 [2021-12-22 16:47:52,199 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 48 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 153 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 [2021-12-22 16:47:52,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 153 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:52,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states. [2021-12-22 16:47:52,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 1797. [2021-12-22 16:47:52,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1796 states have (on average 1.614142538975501) internal successors, (2899), 1796 states have internal predecessors, (2899), 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) [2021-12-22 16:47:52,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 2899 transitions. [2021-12-22 16:47:52,243 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 2899 transitions. Word has length 25 [2021-12-22 16:47:52,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:52,244 INFO L470 AbstractCegarLoop]: Abstraction has 1797 states and 2899 transitions. [2021-12-22 16:47:52,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-12-22 16:47:52,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 2899 transitions. [2021-12-22 16:47:52,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-22 16:47:52,245 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:52,245 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, 1] [2021-12-22 16:47:52,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-22 16:47:52,246 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:52,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:52,246 INFO L85 PathProgramCache]: Analyzing trace with hash 483304739, now seen corresponding path program 1 times [2021-12-22 16:47:52,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:52,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919482125] [2021-12-22 16:47:52,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:52,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:52,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:52,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919482125] [2021-12-22 16:47:52,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919482125] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:52,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:52,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:52,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259469790] [2021-12-22 16:47:52,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:52,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:52,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:52,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:52,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:52,273 INFO L87 Difference]: Start difference. First operand 1797 states and 2899 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-12-22 16:47:52,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:52,287 INFO L93 Difference]: Finished difference Result 2471 states and 3972 transitions. [2021-12-22 16:47:52,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:52,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2021-12-22 16:47:52,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:52,293 INFO L225 Difference]: With dead ends: 2471 [2021-12-22 16:47:52,294 INFO L226 Difference]: Without dead ends: 2471 [2021-12-22 16:47:52,295 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 [2021-12-22 16:47:52,295 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 58 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 190 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 [2021-12-22 16:47:52,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 190 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:52,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2021-12-22 16:47:52,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2469. [2021-12-22 16:47:52,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2469 states, 2468 states have (on average 1.608995137763371) internal successors, (3971), 2468 states have internal predecessors, (3971), 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) [2021-12-22 16:47:52,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2469 states to 2469 states and 3971 transitions. [2021-12-22 16:47:52,332 INFO L78 Accepts]: Start accepts. Automaton has 2469 states and 3971 transitions. Word has length 25 [2021-12-22 16:47:52,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:52,332 INFO L470 AbstractCegarLoop]: Abstraction has 2469 states and 3971 transitions. [2021-12-22 16:47:52,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-12-22 16:47:52,332 INFO L276 IsEmpty]: Start isEmpty. Operand 2469 states and 3971 transitions. [2021-12-22 16:47:52,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-22 16:47:52,334 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:52,334 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, 1, 1] [2021-12-22 16:47:52,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-22 16:47:52,334 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:52,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:52,335 INFO L85 PathProgramCache]: Analyzing trace with hash -608860292, now seen corresponding path program 1 times [2021-12-22 16:47:52,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:52,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872086061] [2021-12-22 16:47:52,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:52,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:52,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:52,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:52,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872086061] [2021-12-22 16:47:52,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872086061] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:52,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:52,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:52,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083312566] [2021-12-22 16:47:52,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:52,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:52,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:52,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:52,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:52,366 INFO L87 Difference]: Start difference. First operand 2469 states and 3971 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-12-22 16:47:52,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:52,381 INFO L93 Difference]: Finished difference Result 2503 states and 3972 transitions. [2021-12-22 16:47:52,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:52,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2021-12-22 16:47:52,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:52,387 INFO L225 Difference]: With dead ends: 2503 [2021-12-22 16:47:52,387 INFO L226 Difference]: Without dead ends: 2503 [2021-12-22 16:47:52,387 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 [2021-12-22 16:47:52,388 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 60 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 188 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 [2021-12-22 16:47:52,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 188 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:52,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2021-12-22 16:47:52,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 2501. [2021-12-22 16:47:52,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2501 states, 2500 states have (on average 1.5884) internal successors, (3971), 2500 states have internal predecessors, (3971), 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) [2021-12-22 16:47:52,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2501 states to 2501 states and 3971 transitions. [2021-12-22 16:47:52,442 INFO L78 Accepts]: Start accepts. Automaton has 2501 states and 3971 transitions. Word has length 26 [2021-12-22 16:47:52,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:52,443 INFO L470 AbstractCegarLoop]: Abstraction has 2501 states and 3971 transitions. [2021-12-22 16:47:52,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-12-22 16:47:52,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2501 states and 3971 transitions. [2021-12-22 16:47:52,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-22 16:47:52,444 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:52,445 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, 1, 1] [2021-12-22 16:47:52,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-22 16:47:52,445 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:52,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:52,446 INFO L85 PathProgramCache]: Analyzing trace with hash 2097759102, now seen corresponding path program 1 times [2021-12-22 16:47:52,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:52,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764506977] [2021-12-22 16:47:52,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:52,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:52,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:52,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:52,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764506977] [2021-12-22 16:47:52,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764506977] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:52,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:52,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:52,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596218996] [2021-12-22 16:47:52,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:52,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:52,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:52,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:52,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:52,468 INFO L87 Difference]: Start difference. First operand 2501 states and 3971 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-12-22 16:47:52,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:52,487 INFO L93 Difference]: Finished difference Result 4487 states and 7204 transitions. [2021-12-22 16:47:52,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:52,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2021-12-22 16:47:52,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:52,497 INFO L225 Difference]: With dead ends: 4487 [2021-12-22 16:47:52,498 INFO L226 Difference]: Without dead ends: 4487 [2021-12-22 16:47:52,498 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 [2021-12-22 16:47:52,499 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 45 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 151 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 [2021-12-22 16:47:52,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 151 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:52,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4487 states. [2021-12-22 16:47:52,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4487 to 3589. [2021-12-22 16:47:52,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3589 states, 3588 states have (on average 1.5437569676700111) internal successors, (5539), 3588 states have internal predecessors, (5539), 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) [2021-12-22 16:47:52,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3589 states to 3589 states and 5539 transitions. [2021-12-22 16:47:52,561 INFO L78 Accepts]: Start accepts. Automaton has 3589 states and 5539 transitions. Word has length 26 [2021-12-22 16:47:52,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:52,561 INFO L470 AbstractCegarLoop]: Abstraction has 3589 states and 5539 transitions. [2021-12-22 16:47:52,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-12-22 16:47:52,561 INFO L276 IsEmpty]: Start isEmpty. Operand 3589 states and 5539 transitions. [2021-12-22 16:47:52,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-22 16:47:52,563 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:52,564 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, 1, 1] [2021-12-22 16:47:52,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-22 16:47:52,564 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:52,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:52,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1076690748, now seen corresponding path program 1 times [2021-12-22 16:47:52,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:52,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180128762] [2021-12-22 16:47:52,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:52,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:52,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:52,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:52,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180128762] [2021-12-22 16:47:52,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180128762] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:52,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:52,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:52,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733198390] [2021-12-22 16:47:52,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:52,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:52,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:52,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:52,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:52,587 INFO L87 Difference]: Start difference. First operand 3589 states and 5539 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-12-22 16:47:52,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:52,608 INFO L93 Difference]: Finished difference Result 4871 states and 7492 transitions. [2021-12-22 16:47:52,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:52,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2021-12-22 16:47:52,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:52,632 INFO L225 Difference]: With dead ends: 4871 [2021-12-22 16:47:52,632 INFO L226 Difference]: Without dead ends: 4871 [2021-12-22 16:47:52,632 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 [2021-12-22 16:47:52,634 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 57 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 191 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 [2021-12-22 16:47:52,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 191 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:52,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4871 states. [2021-12-22 16:47:52,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 4869. [2021-12-22 16:47:52,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4869 states, 4868 states have (on average 1.538824979457683) internal successors, (7491), 4868 states have internal predecessors, (7491), 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) [2021-12-22 16:47:52,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4869 states to 4869 states and 7491 transitions. [2021-12-22 16:47:52,716 INFO L78 Accepts]: Start accepts. Automaton has 4869 states and 7491 transitions. Word has length 26 [2021-12-22 16:47:52,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:52,716 INFO L470 AbstractCegarLoop]: Abstraction has 4869 states and 7491 transitions. [2021-12-22 16:47:52,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-12-22 16:47:52,716 INFO L276 IsEmpty]: Start isEmpty. Operand 4869 states and 7491 transitions. [2021-12-22 16:47:52,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-22 16:47:52,721 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:52,721 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, 1, 1, 1] [2021-12-22 16:47:52,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-22 16:47:52,721 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:52,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:52,722 INFO L85 PathProgramCache]: Analyzing trace with hash 606237144, now seen corresponding path program 1 times [2021-12-22 16:47:52,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:52,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790502542] [2021-12-22 16:47:52,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:52,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:52,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:52,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:52,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790502542] [2021-12-22 16:47:52,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790502542] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:52,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:52,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:52,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467068386] [2021-12-22 16:47:52,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:52,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:52,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:52,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:52,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:52,740 INFO L87 Difference]: Start difference. First operand 4869 states and 7491 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2021-12-22 16:47:52,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:52,761 INFO L93 Difference]: Finished difference Result 4935 states and 7492 transitions. [2021-12-22 16:47:52,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:52,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2021-12-22 16:47:52,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:52,767 INFO L225 Difference]: With dead ends: 4935 [2021-12-22 16:47:52,767 INFO L226 Difference]: Without dead ends: 4935 [2021-12-22 16:47:52,768 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 [2021-12-22 16:47:52,770 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 59 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 184 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 [2021-12-22 16:47:52,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 184 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:52,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4935 states. [2021-12-22 16:47:52,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4935 to 4933. [2021-12-22 16:47:52,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4933 states, 4932 states have (on average 1.5188564476885644) internal successors, (7491), 4932 states have internal predecessors, (7491), 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) [2021-12-22 16:47:52,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4933 states to 4933 states and 7491 transitions. [2021-12-22 16:47:52,836 INFO L78 Accepts]: Start accepts. Automaton has 4933 states and 7491 transitions. Word has length 27 [2021-12-22 16:47:52,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:52,836 INFO L470 AbstractCegarLoop]: Abstraction has 4933 states and 7491 transitions. [2021-12-22 16:47:52,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2021-12-22 16:47:52,836 INFO L276 IsEmpty]: Start isEmpty. Operand 4933 states and 7491 transitions. [2021-12-22 16:47:52,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-22 16:47:52,840 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:52,840 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, 1, 1, 1] [2021-12-22 16:47:52,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-22 16:47:52,841 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:52,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:52,841 INFO L85 PathProgramCache]: Analyzing trace with hash -982110758, now seen corresponding path program 1 times [2021-12-22 16:47:52,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:52,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415053373] [2021-12-22 16:47:52,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:52,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:52,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:52,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:52,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415053373] [2021-12-22 16:47:52,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415053373] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:52,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:52,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:52,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265742830] [2021-12-22 16:47:52,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:52,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:52,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:52,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:52,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:52,864 INFO L87 Difference]: Start difference. First operand 4933 states and 7491 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2021-12-22 16:47:52,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:52,907 INFO L93 Difference]: Finished difference Result 8711 states and 13380 transitions. [2021-12-22 16:47:52,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:52,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2021-12-22 16:47:52,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:52,920 INFO L225 Difference]: With dead ends: 8711 [2021-12-22 16:47:52,920 INFO L226 Difference]: Without dead ends: 8711 [2021-12-22 16:47:52,921 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 [2021-12-22 16:47:52,921 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 42 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 149 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 [2021-12-22 16:47:52,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 149 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:52,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8711 states. [2021-12-22 16:47:52,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8711 to 7173. [2021-12-22 16:47:53,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7173 states, 7172 states have (on average 1.4728109313998885) internal successors, (10563), 7172 states have internal predecessors, (10563), 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) [2021-12-22 16:47:53,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7173 states to 7173 states and 10563 transitions. [2021-12-22 16:47:53,017 INFO L78 Accepts]: Start accepts. Automaton has 7173 states and 10563 transitions. Word has length 27 [2021-12-22 16:47:53,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:53,017 INFO L470 AbstractCegarLoop]: Abstraction has 7173 states and 10563 transitions. [2021-12-22 16:47:53,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2021-12-22 16:47:53,017 INFO L276 IsEmpty]: Start isEmpty. Operand 7173 states and 10563 transitions. [2021-12-22 16:47:53,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-22 16:47:53,023 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:53,023 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, 1, 1, 1] [2021-12-22 16:47:53,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-22 16:47:53,023 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:53,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:53,023 INFO L85 PathProgramCache]: Analyzing trace with hash -2003179112, now seen corresponding path program 1 times [2021-12-22 16:47:53,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:53,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545778465] [2021-12-22 16:47:53,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:53,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:53,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:53,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:53,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545778465] [2021-12-22 16:47:53,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545778465] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:53,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:53,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:53,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952166758] [2021-12-22 16:47:53,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:53,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:53,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:53,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:53,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:53,036 INFO L87 Difference]: Start difference. First operand 7173 states and 10563 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2021-12-22 16:47:53,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:53,097 INFO L93 Difference]: Finished difference Result 9607 states and 14084 transitions. [2021-12-22 16:47:53,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:53,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2021-12-22 16:47:53,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:53,108 INFO L225 Difference]: With dead ends: 9607 [2021-12-22 16:47:53,108 INFO L226 Difference]: Without dead ends: 9607 [2021-12-22 16:47:53,108 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 [2021-12-22 16:47:53,109 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 56 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 192 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 [2021-12-22 16:47:53,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 192 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:53,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9607 states. [2021-12-22 16:47:53,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9607 to 9605. [2021-12-22 16:47:53,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9605 states, 9604 states have (on average 1.4663681799250312) internal successors, (14083), 9604 states have internal predecessors, (14083), 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) [2021-12-22 16:47:53,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9605 states to 9605 states and 14083 transitions. [2021-12-22 16:47:53,247 INFO L78 Accepts]: Start accepts. Automaton has 9605 states and 14083 transitions. Word has length 27 [2021-12-22 16:47:53,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:53,247 INFO L470 AbstractCegarLoop]: Abstraction has 9605 states and 14083 transitions. [2021-12-22 16:47:53,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2021-12-22 16:47:53,248 INFO L276 IsEmpty]: Start isEmpty. Operand 9605 states and 14083 transitions. [2021-12-22 16:47:53,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-22 16:47:53,258 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:53,258 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, 1, 1, 1, 1] [2021-12-22 16:47:53,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-22 16:47:53,258 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:53,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:53,259 INFO L85 PathProgramCache]: Analyzing trace with hash -380447663, now seen corresponding path program 1 times [2021-12-22 16:47:53,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:53,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134262434] [2021-12-22 16:47:53,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:53,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:53,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:53,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:53,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134262434] [2021-12-22 16:47:53,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134262434] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:53,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:53,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:53,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205591556] [2021-12-22 16:47:53,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:53,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:53,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:53,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:53,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:53,279 INFO L87 Difference]: Start difference. First operand 9605 states and 14083 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-12-22 16:47:53,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:53,312 INFO L93 Difference]: Finished difference Result 9735 states and 14084 transitions. [2021-12-22 16:47:53,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:53,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2021-12-22 16:47:53,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:53,325 INFO L225 Difference]: With dead ends: 9735 [2021-12-22 16:47:53,326 INFO L226 Difference]: Without dead ends: 9735 [2021-12-22 16:47:53,326 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 [2021-12-22 16:47:53,327 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 58 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 180 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 [2021-12-22 16:47:53,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 180 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:53,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9735 states. [2021-12-22 16:47:53,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9735 to 9733. [2021-12-22 16:47:53,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9733 states, 9732 states have (on average 1.447081792026305) internal successors, (14083), 9732 states have internal predecessors, (14083), 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) [2021-12-22 16:47:53,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9733 states to 9733 states and 14083 transitions. [2021-12-22 16:47:53,526 INFO L78 Accepts]: Start accepts. Automaton has 9733 states and 14083 transitions. Word has length 28 [2021-12-22 16:47:53,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:53,527 INFO L470 AbstractCegarLoop]: Abstraction has 9733 states and 14083 transitions. [2021-12-22 16:47:53,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-12-22 16:47:53,527 INFO L276 IsEmpty]: Start isEmpty. Operand 9733 states and 14083 transitions. [2021-12-22 16:47:53,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-22 16:47:53,535 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:53,535 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, 1, 1, 1, 1] [2021-12-22 16:47:53,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-22 16:47:53,536 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:53,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:53,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1968795565, now seen corresponding path program 1 times [2021-12-22 16:47:53,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:53,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303072029] [2021-12-22 16:47:53,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:53,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:53,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:53,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:53,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:53,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303072029] [2021-12-22 16:47:53,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303072029] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:53,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:53,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:53,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468200896] [2021-12-22 16:47:53,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:53,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:53,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:53,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:53,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:53,560 INFO L87 Difference]: Start difference. First operand 9733 states and 14083 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-12-22 16:47:53,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:53,609 INFO L93 Difference]: Finished difference Result 16903 states and 24708 transitions. [2021-12-22 16:47:53,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:53,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2021-12-22 16:47:53,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:53,635 INFO L225 Difference]: With dead ends: 16903 [2021-12-22 16:47:53,635 INFO L226 Difference]: Without dead ends: 16903 [2021-12-22 16:47:53,636 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 [2021-12-22 16:47:53,636 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 39 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 147 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 [2021-12-22 16:47:53,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 147 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:53,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16903 states. [2021-12-22 16:47:53,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16903 to 14341. [2021-12-22 16:47:53,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14341 states, 14340 states have (on average 1.4016039051603906) internal successors, (20099), 14340 states have internal predecessors, (20099), 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) [2021-12-22 16:47:53,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14341 states to 14341 states and 20099 transitions. [2021-12-22 16:47:53,844 INFO L78 Accepts]: Start accepts. Automaton has 14341 states and 20099 transitions. Word has length 28 [2021-12-22 16:47:53,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:53,844 INFO L470 AbstractCegarLoop]: Abstraction has 14341 states and 20099 transitions. [2021-12-22 16:47:53,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-12-22 16:47:53,845 INFO L276 IsEmpty]: Start isEmpty. Operand 14341 states and 20099 transitions. [2021-12-22 16:47:53,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-22 16:47:53,856 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:53,856 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, 1, 1, 1, 1] [2021-12-22 16:47:53,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-22 16:47:53,857 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:53,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:53,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1305103377, now seen corresponding path program 1 times [2021-12-22 16:47:53,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:53,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748479136] [2021-12-22 16:47:53,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:53,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:53,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:53,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:53,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748479136] [2021-12-22 16:47:53,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748479136] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:53,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:53,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:53,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936053264] [2021-12-22 16:47:53,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:53,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:53,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:53,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:53,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:53,873 INFO L87 Difference]: Start difference. First operand 14341 states and 20099 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-12-22 16:47:53,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:53,984 INFO L93 Difference]: Finished difference Result 18951 states and 26372 transitions. [2021-12-22 16:47:53,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:53,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2021-12-22 16:47:53,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:54,011 INFO L225 Difference]: With dead ends: 18951 [2021-12-22 16:47:54,012 INFO L226 Difference]: Without dead ends: 18951 [2021-12-22 16:47:54,012 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 [2021-12-22 16:47:54,012 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 55 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 193 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 [2021-12-22 16:47:54,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 193 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:54,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18951 states. [2021-12-22 16:47:54,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18951 to 18949. [2021-12-22 16:47:54,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18949 states, 18948 states have (on average 1.3917563858982478) internal successors, (26371), 18948 states have internal predecessors, (26371), 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) [2021-12-22 16:47:54,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18949 states to 18949 states and 26371 transitions. [2021-12-22 16:47:54,262 INFO L78 Accepts]: Start accepts. Automaton has 18949 states and 26371 transitions. Word has length 28 [2021-12-22 16:47:54,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:54,263 INFO L470 AbstractCegarLoop]: Abstraction has 18949 states and 26371 transitions. [2021-12-22 16:47:54,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-12-22 16:47:54,263 INFO L276 IsEmpty]: Start isEmpty. Operand 18949 states and 26371 transitions. [2021-12-22 16:47:54,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-22 16:47:54,276 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:54,276 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, 1, 1, 1, 1, 1] [2021-12-22 16:47:54,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-22 16:47:54,276 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:54,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:54,277 INFO L85 PathProgramCache]: Analyzing trace with hash -902905267, now seen corresponding path program 1 times [2021-12-22 16:47:54,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:54,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794764884] [2021-12-22 16:47:54,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:54,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:54,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:54,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:54,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794764884] [2021-12-22 16:47:54,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794764884] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:54,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:54,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:54,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143528752] [2021-12-22 16:47:54,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:54,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:54,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:54,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:54,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:54,295 INFO L87 Difference]: Start difference. First operand 18949 states and 26371 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2021-12-22 16:47:54,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:54,371 INFO L93 Difference]: Finished difference Result 19207 states and 26372 transitions. [2021-12-22 16:47:54,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:54,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 29 [2021-12-22 16:47:54,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:54,406 INFO L225 Difference]: With dead ends: 19207 [2021-12-22 16:47:54,407 INFO L226 Difference]: Without dead ends: 19207 [2021-12-22 16:47:54,407 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 [2021-12-22 16:47:54,408 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 57 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 176 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 [2021-12-22 16:47:54,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 176 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:54,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19207 states. [2021-12-22 16:47:54,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19207 to 19205. [2021-12-22 16:47:54,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19205 states, 19204 states have (on average 1.3732034992709852) internal successors, (26371), 19204 states have internal predecessors, (26371), 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) [2021-12-22 16:47:54,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19205 states to 19205 states and 26371 transitions. [2021-12-22 16:47:54,724 INFO L78 Accepts]: Start accepts. Automaton has 19205 states and 26371 transitions. Word has length 29 [2021-12-22 16:47:54,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:54,724 INFO L470 AbstractCegarLoop]: Abstraction has 19205 states and 26371 transitions. [2021-12-22 16:47:54,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2021-12-22 16:47:54,724 INFO L276 IsEmpty]: Start isEmpty. Operand 19205 states and 26371 transitions. [2021-12-22 16:47:54,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-22 16:47:54,737 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:54,737 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, 1, 1, 1, 1, 1] [2021-12-22 16:47:54,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-22 16:47:54,737 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:54,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:54,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1803714127, now seen corresponding path program 1 times [2021-12-22 16:47:54,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:54,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192780309] [2021-12-22 16:47:54,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:54,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:54,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:54,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:54,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192780309] [2021-12-22 16:47:54,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192780309] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:54,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:54,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:54,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263490020] [2021-12-22 16:47:54,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:54,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:54,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:54,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:54,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:54,826 INFO L87 Difference]: Start difference. First operand 19205 states and 26371 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2021-12-22 16:47:54,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:54,895 INFO L93 Difference]: Finished difference Result 32775 states and 45316 transitions. [2021-12-22 16:47:54,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:54,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 29 [2021-12-22 16:47:54,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:54,943 INFO L225 Difference]: With dead ends: 32775 [2021-12-22 16:47:54,944 INFO L226 Difference]: Without dead ends: 32775 [2021-12-22 16:47:54,944 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 [2021-12-22 16:47:54,945 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 36 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 145 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 [2021-12-22 16:47:54,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 145 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:54,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32775 states. [2021-12-22 16:47:55,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32775 to 28677. [2021-12-22 16:47:55,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28677 states, 28676 states have (on average 1.3302761891477193) internal successors, (38147), 28676 states have internal predecessors, (38147), 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) [2021-12-22 16:47:55,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28677 states to 28677 states and 38147 transitions. [2021-12-22 16:47:55,496 INFO L78 Accepts]: Start accepts. Automaton has 28677 states and 38147 transitions. Word has length 29 [2021-12-22 16:47:55,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:55,496 INFO L470 AbstractCegarLoop]: Abstraction has 28677 states and 38147 transitions. [2021-12-22 16:47:55,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2021-12-22 16:47:55,496 INFO L276 IsEmpty]: Start isEmpty. Operand 28677 states and 38147 transitions. [2021-12-22 16:47:55,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-22 16:47:55,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:55,517 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:47:55,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-22 16:47:55,518 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:55,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:55,518 INFO L85 PathProgramCache]: Analyzing trace with hash 782645773, now seen corresponding path program 1 times [2021-12-22 16:47:55,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:55,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826093418] [2021-12-22 16:47:55,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:55,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:55,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:55,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:55,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826093418] [2021-12-22 16:47:55,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826093418] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:55,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:55,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:55,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659120400] [2021-12-22 16:47:55,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:55,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:55,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:55,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:55,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:55,533 INFO L87 Difference]: Start difference. First operand 28677 states and 38147 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2021-12-22 16:47:55,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:55,607 INFO L93 Difference]: Finished difference Result 37383 states and 49156 transitions. [2021-12-22 16:47:55,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:55,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 29 [2021-12-22 16:47:55,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:55,666 INFO L225 Difference]: With dead ends: 37383 [2021-12-22 16:47:55,666 INFO L226 Difference]: Without dead ends: 37383 [2021-12-22 16:47:55,667 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 [2021-12-22 16:47:55,667 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 54 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 194 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 [2021-12-22 16:47:55,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 194 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:55,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37383 states. [2021-12-22 16:47:56,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37383 to 37381. [2021-12-22 16:47:56,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37381 states, 37380 states have (on average 1.315008025682183) internal successors, (49155), 37380 states have internal predecessors, (49155), 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) [2021-12-22 16:47:56,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37381 states to 37381 states and 49155 transitions. [2021-12-22 16:47:56,212 INFO L78 Accepts]: Start accepts. Automaton has 37381 states and 49155 transitions. Word has length 29 [2021-12-22 16:47:56,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:56,212 INFO L470 AbstractCegarLoop]: Abstraction has 37381 states and 49155 transitions. [2021-12-22 16:47:56,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2021-12-22 16:47:56,212 INFO L276 IsEmpty]: Start isEmpty. Operand 37381 states and 49155 transitions. [2021-12-22 16:47:56,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-22 16:47:56,232 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:56,232 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, 1, 1, 1, 1, 1, 1] [2021-12-22 16:47:56,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-22 16:47:56,233 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:56,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:56,233 INFO L85 PathProgramCache]: Analyzing trace with hash 80778534, now seen corresponding path program 1 times [2021-12-22 16:47:56,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:56,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744900196] [2021-12-22 16:47:56,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:56,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:56,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:56,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:56,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744900196] [2021-12-22 16:47:56,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744900196] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:56,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:56,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:56,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519138805] [2021-12-22 16:47:56,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:56,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:56,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:56,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:56,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:56,253 INFO L87 Difference]: Start difference. First operand 37381 states and 49155 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-12-22 16:47:56,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:56,448 INFO L93 Difference]: Finished difference Result 37895 states and 49156 transitions. [2021-12-22 16:47:56,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:56,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2021-12-22 16:47:56,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:56,506 INFO L225 Difference]: With dead ends: 37895 [2021-12-22 16:47:56,507 INFO L226 Difference]: Without dead ends: 37895 [2021-12-22 16:47:56,507 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 [2021-12-22 16:47:56,507 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 56 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 172 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 [2021-12-22 16:47:56,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 172 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:56,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37895 states. [2021-12-22 16:47:56,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37895 to 37893. [2021-12-22 16:47:56,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37893 states, 37892 states have (on average 1.2972395228544285) internal successors, (49155), 37892 states have internal predecessors, (49155), 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) [2021-12-22 16:47:56,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37893 states to 37893 states and 49155 transitions. [2021-12-22 16:47:56,920 INFO L78 Accepts]: Start accepts. Automaton has 37893 states and 49155 transitions. Word has length 30 [2021-12-22 16:47:56,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:56,921 INFO L470 AbstractCegarLoop]: Abstraction has 37893 states and 49155 transitions. [2021-12-22 16:47:56,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-12-22 16:47:56,922 INFO L276 IsEmpty]: Start isEmpty. Operand 37893 states and 49155 transitions. [2021-12-22 16:47:56,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-22 16:47:56,940 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:56,940 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, 1, 1, 1, 1, 1, 1] [2021-12-22 16:47:56,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-22 16:47:56,940 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:56,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:56,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1507569368, now seen corresponding path program 1 times [2021-12-22 16:47:56,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:56,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465916628] [2021-12-22 16:47:56,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:56,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:56,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:56,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:56,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465916628] [2021-12-22 16:47:56,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465916628] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:56,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:56,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:56,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618959325] [2021-12-22 16:47:56,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:56,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:56,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:56,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:56,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:56,961 INFO L87 Difference]: Start difference. First operand 37893 states and 49155 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-12-22 16:47:57,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:57,089 INFO L93 Difference]: Finished difference Result 73735 states and 92164 transitions. [2021-12-22 16:47:57,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:57,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2021-12-22 16:47:57,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:57,197 INFO L225 Difference]: With dead ends: 73735 [2021-12-22 16:47:57,197 INFO L226 Difference]: Without dead ends: 73735 [2021-12-22 16:47:57,198 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 [2021-12-22 16:47:57,199 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 54 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 163 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 [2021-12-22 16:47:57,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 163 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:57,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73735 states. [2021-12-22 16:47:58,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73735 to 73733. [2021-12-22 16:47:58,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73733 states, 73732 states have (on average 1.2499728747355288) internal successors, (92163), 73732 states have internal predecessors, (92163), 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) [2021-12-22 16:47:58,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73733 states to 73733 states and 92163 transitions. [2021-12-22 16:47:58,449 INFO L78 Accepts]: Start accepts. Automaton has 73733 states and 92163 transitions. Word has length 30 [2021-12-22 16:47:58,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:58,449 INFO L470 AbstractCegarLoop]: Abstraction has 73733 states and 92163 transitions. [2021-12-22 16:47:58,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-12-22 16:47:58,449 INFO L276 IsEmpty]: Start isEmpty. Operand 73733 states and 92163 transitions. [2021-12-22 16:47:58,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-22 16:47:58,483 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:58,483 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, 1, 1, 1, 1, 1, 1] [2021-12-22 16:47:58,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-22 16:47:58,484 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:58,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:58,484 INFO L85 PathProgramCache]: Analyzing trace with hash -486501014, now seen corresponding path program 1 times [2021-12-22 16:47:58,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:58,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231036572] [2021-12-22 16:47:58,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:58,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:58,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:58,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:58,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231036572] [2021-12-22 16:47:58,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231036572] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:58,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:58,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:58,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183827367] [2021-12-22 16:47:58,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:58,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:58,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:58,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:58,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:58,499 INFO L87 Difference]: Start difference. First operand 73733 states and 92163 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-12-22 16:47:58,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:47:58,660 INFO L93 Difference]: Finished difference Result 79879 states and 101380 transitions. [2021-12-22 16:47:58,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:47:58,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2021-12-22 16:47:58,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:47:58,754 INFO L225 Difference]: With dead ends: 79879 [2021-12-22 16:47:58,755 INFO L226 Difference]: Without dead ends: 79879 [2021-12-22 16:47:58,755 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 [2021-12-22 16:47:58,755 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 33 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 184 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 [2021-12-22 16:47:58,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 184 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:47:58,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79879 states. [2021-12-22 16:47:59,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79879 to 73733. [2021-12-22 16:47:59,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73733 states, 73732 states have (on average 1.2360847393262084) internal successors, (91139), 73732 states have internal predecessors, (91139), 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) [2021-12-22 16:47:59,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73733 states to 73733 states and 91139 transitions. [2021-12-22 16:47:59,756 INFO L78 Accepts]: Start accepts. Automaton has 73733 states and 91139 transitions. Word has length 30 [2021-12-22 16:47:59,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:47:59,757 INFO L470 AbstractCegarLoop]: Abstraction has 73733 states and 91139 transitions. [2021-12-22 16:47:59,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-12-22 16:47:59,757 INFO L276 IsEmpty]: Start isEmpty. Operand 73733 states and 91139 transitions. [2021-12-22 16:47:59,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-22 16:47:59,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:47:59,786 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, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:47:59,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-22 16:47:59,786 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:47:59,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:47:59,787 INFO L85 PathProgramCache]: Analyzing trace with hash 510205634, now seen corresponding path program 1 times [2021-12-22 16:47:59,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:47:59,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689113791] [2021-12-22 16:47:59,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:47:59,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:47:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:47:59,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:47:59,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:47:59,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689113791] [2021-12-22 16:47:59,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689113791] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:47:59,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:47:59,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:47:59,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084755002] [2021-12-22 16:47:59,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:47:59,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:47:59,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:47:59,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:47:59,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:47:59,801 INFO L87 Difference]: Start difference. First operand 73733 states and 91139 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-12-22 16:48:00,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:00,310 INFO L93 Difference]: Finished difference Result 121863 states and 149508 transitions. [2021-12-22 16:48:00,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:48:00,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2021-12-22 16:48:00,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:00,429 INFO L225 Difference]: With dead ends: 121863 [2021-12-22 16:48:00,430 INFO L226 Difference]: Without dead ends: 121863 [2021-12-22 16:48:00,430 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 [2021-12-22 16:48:00,430 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 30 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 141 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 [2021-12-22 16:48:00,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 141 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:48:00,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121863 states. [2021-12-22 16:48:01,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121863 to 113669. [2021-12-22 16:48:01,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113669 states, 113668 states have (on average 1.2071911179927508) internal successors, (137219), 113668 states have internal predecessors, (137219), 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) [2021-12-22 16:48:01,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113669 states to 113669 states and 137219 transitions. [2021-12-22 16:48:01,815 INFO L78 Accepts]: Start accepts. Automaton has 113669 states and 137219 transitions. Word has length 31 [2021-12-22 16:48:01,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:01,815 INFO L470 AbstractCegarLoop]: Abstraction has 113669 states and 137219 transitions. [2021-12-22 16:48:01,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-12-22 16:48:01,815 INFO L276 IsEmpty]: Start isEmpty. Operand 113669 states and 137219 transitions. [2021-12-22 16:48:01,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-22 16:48:01,875 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:01,875 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, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:48:01,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-22 16:48:01,875 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:48:01,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:01,876 INFO L85 PathProgramCache]: Analyzing trace with hash -510862720, now seen corresponding path program 1 times [2021-12-22 16:48:01,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:48:01,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543847285] [2021-12-22 16:48:01,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:48:01,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:48:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:48:01,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:48:01,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:48:01,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543847285] [2021-12-22 16:48:01,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543847285] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:01,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:01,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:48:01,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346889885] [2021-12-22 16:48:01,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:01,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:48:01,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:48:01,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:48:01,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:48:01,889 INFO L87 Difference]: Start difference. First operand 113669 states and 137219 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-12-22 16:48:02,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:02,158 INFO L93 Difference]: Finished difference Result 144391 states and 169988 transitions. [2021-12-22 16:48:02,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:48:02,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2021-12-22 16:48:02,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:02,306 INFO L225 Difference]: With dead ends: 144391 [2021-12-22 16:48:02,306 INFO L226 Difference]: Without dead ends: 144391 [2021-12-22 16:48:02,306 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 [2021-12-22 16:48:02,307 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 52 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 196 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 [2021-12-22 16:48:02,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 196 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:48:02,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144391 states. [2021-12-22 16:48:03,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144391 to 144389. [2021-12-22 16:48:03,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144389 states, 144388 states have (on average 1.177293126852647) internal successors, (169987), 144388 states have internal predecessors, (169987), 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) [2021-12-22 16:48:04,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144389 states to 144389 states and 169987 transitions. [2021-12-22 16:48:04,041 INFO L78 Accepts]: Start accepts. Automaton has 144389 states and 169987 transitions. Word has length 31 [2021-12-22 16:48:04,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:04,041 INFO L470 AbstractCegarLoop]: Abstraction has 144389 states and 169987 transitions. [2021-12-22 16:48:04,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-12-22 16:48:04,041 INFO L276 IsEmpty]: Start isEmpty. Operand 144389 states and 169987 transitions. [2021-12-22 16:48:04,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-22 16:48:04,099 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:04,099 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:48:04,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-22 16:48:04,099 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:48:04,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:04,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1363278403, now seen corresponding path program 1 times [2021-12-22 16:48:04,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:48:04,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171107227] [2021-12-22 16:48:04,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:48:04,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:48:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:48:04,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:48:04,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:48:04,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171107227] [2021-12-22 16:48:04,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171107227] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:04,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:04,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:48:04,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098584941] [2021-12-22 16:48:04,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:04,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:48:04,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:48:04,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:48:04,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:48:04,113 INFO L87 Difference]: Start difference. First operand 144389 states and 169987 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-12-22 16:48:04,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:04,750 INFO L93 Difference]: Finished difference Result 147463 states and 172036 transitions. [2021-12-22 16:48:04,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:48:04,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2021-12-22 16:48:04,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:04,899 INFO L225 Difference]: With dead ends: 147463 [2021-12-22 16:48:04,899 INFO L226 Difference]: Without dead ends: 147463 [2021-12-22 16:48:04,899 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 [2021-12-22 16:48:04,900 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 54 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 164 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 [2021-12-22 16:48:04,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 164 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:48:04,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147463 states. [2021-12-22 16:48:06,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147463 to 147461. [2021-12-22 16:48:06,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147461 states, 147460 states have (on average 1.1666553641665536) internal successors, (172035), 147460 states have internal predecessors, (172035), 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) [2021-12-22 16:48:06,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147461 states to 147461 states and 172035 transitions. [2021-12-22 16:48:06,656 INFO L78 Accepts]: Start accepts. Automaton has 147461 states and 172035 transitions. Word has length 32 [2021-12-22 16:48:06,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:06,656 INFO L470 AbstractCegarLoop]: Abstraction has 147461 states and 172035 transitions. [2021-12-22 16:48:06,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-12-22 16:48:06,656 INFO L276 IsEmpty]: Start isEmpty. Operand 147461 states and 172035 transitions. [2021-12-22 16:48:06,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-22 16:48:06,735 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:06,735 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:48:06,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-22 16:48:06,736 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:48:06,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:06,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1343340991, now seen corresponding path program 1 times [2021-12-22 16:48:06,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:48:06,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142791154] [2021-12-22 16:48:06,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:48:06,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:48:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:48:06,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:48:06,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:48:06,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142791154] [2021-12-22 16:48:06,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142791154] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:06,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:06,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:48:06,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47868148] [2021-12-22 16:48:06,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:06,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:48:06,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:48:06,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:48:06,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:48:06,753 INFO L87 Difference]: Start difference. First operand 147461 states and 172035 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-12-22 16:48:07,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:07,312 INFO L93 Difference]: Finished difference Result 237573 states and 270339 transitions. [2021-12-22 16:48:07,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:48:07,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2021-12-22 16:48:07,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:07,598 INFO L225 Difference]: With dead ends: 237573 [2021-12-22 16:48:07,598 INFO L226 Difference]: Without dead ends: 237573 [2021-12-22 16:48:07,598 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 [2021-12-22 16:48:07,599 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 26 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 138 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 [2021-12-22 16:48:07,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 138 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:48:08,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237573 states. [2021-12-22 16:48:09,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237573 to 229381. [2021-12-22 16:48:10,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229381 states, 229380 states have (on average 1.1428502920917256) internal successors, (262147), 229380 states have internal predecessors, (262147), 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) [2021-12-22 16:48:10,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229381 states to 229381 states and 262147 transitions. [2021-12-22 16:48:10,406 INFO L78 Accepts]: Start accepts. Automaton has 229381 states and 262147 transitions. Word has length 32 [2021-12-22 16:48:10,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:10,406 INFO L470 AbstractCegarLoop]: Abstraction has 229381 states and 262147 transitions. [2021-12-22 16:48:10,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-12-22 16:48:10,407 INFO L276 IsEmpty]: Start isEmpty. Operand 229381 states and 262147 transitions. [2021-12-22 16:48:10,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-22 16:48:10,536 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:48:10,536 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:48:10,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-22 16:48:10,536 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-22 16:48:10,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:48:10,537 INFO L85 PathProgramCache]: Analyzing trace with hash 322272637, now seen corresponding path program 1 times [2021-12-22 16:48:10,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:48:10,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795846756] [2021-12-22 16:48:10,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:48:10,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:48:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:48:10,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:48:10,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:48:10,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795846756] [2021-12-22 16:48:10,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795846756] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:48:10,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:48:10,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:48:10,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822998383] [2021-12-22 16:48:10,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:48:10,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:48:10,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:48:10,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:48:10,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:48:10,549 INFO L87 Difference]: Start difference. First operand 229381 states and 262147 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-12-22 16:48:11,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:48:11,864 INFO L93 Difference]: Finished difference Result 286723 states and 315394 transitions. [2021-12-22 16:48:11,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:48:11,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2021-12-22 16:48:11,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:48:11,864 INFO L225 Difference]: With dead ends: 286723 [2021-12-22 16:48:11,865 INFO L226 Difference]: Without dead ends: 0 [2021-12-22 16:48:11,865 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 [2021-12-22 16:48:11,865 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 50 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 195 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 [2021-12-22 16:48:11,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 195 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:48:11,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-22 16:48:11,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-22 16:48:11,866 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) [2021-12-22 16:48:11,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-22 16:48:11,866 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2021-12-22 16:48:11,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:48:11,866 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-22 16:48:11,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-12-22 16:48:11,867 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-22 16:48:11,867 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-22 16:48:11,869 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2021-12-22 16:48:11,872 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2021-12-22 16:48:11,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-22 16:48:11,874 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:48:11,877 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 16:48:11,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:48:11 BoogieIcfgContainer [2021-12-22 16:48:11,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 16:48:11,881 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 16:48:11,881 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 16:48:11,881 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 16:48:11,881 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:47:50" (3/4) ... [2021-12-22 16:48:11,891 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-22 16:48:11,902 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-12-22 16:48:11,902 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-22 16:48:11,902 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-12-22 16:48:11,902 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-22 16:48:11,938 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 16:48:11,938 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 16:48:11,943 INFO L158 Benchmark]: Toolchain (without parser) took 21703.73ms. Allocated memory was 102.8MB in the beginning and 14.2GB in the end (delta: 14.1GB). Free memory was 74.4MB in the beginning and 11.4GB in the end (delta: -11.3GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. [2021-12-22 16:48:11,944 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 102.8MB. Free memory is still 60.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 16:48:11,944 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.42ms. Allocated memory is still 102.8MB. Free memory was 74.4MB in the beginning and 78.7MB in the end (delta: -4.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 16:48:11,944 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.59ms. Allocated memory is still 102.8MB. Free memory was 78.7MB in the beginning and 76.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 16:48:11,945 INFO L158 Benchmark]: Boogie Preprocessor took 35.34ms. Allocated memory is still 102.8MB. Free memory was 76.7MB in the beginning and 75.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 16:48:11,945 INFO L158 Benchmark]: RCFGBuilder took 243.65ms. Allocated memory is still 102.8MB. Free memory was 75.4MB in the beginning and 61.2MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-22 16:48:11,946 INFO L158 Benchmark]: TraceAbstraction took 21144.02ms. Allocated memory was 102.8MB in the beginning and 14.2GB in the end (delta: 14.1GB). Free memory was 60.9MB in the beginning and 11.4GB in the end (delta: -11.3GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. [2021-12-22 16:48:11,948 INFO L158 Benchmark]: Witness Printer took 57.75ms. Allocated memory is still 14.2GB. Free memory was 11.4GB in the beginning and 11.4GB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-22 16:48:11,948 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 102.8MB. Free memory is still 60.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 189.42ms. Allocated memory is still 102.8MB. Free memory was 74.4MB in the beginning and 78.7MB in the end (delta: -4.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.59ms. Allocated memory is still 102.8MB. Free memory was 78.7MB in the beginning and 76.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.34ms. Allocated memory is still 102.8MB. Free memory was 76.7MB in the beginning and 75.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 243.65ms. Allocated memory is still 102.8MB. Free memory was 75.4MB in the beginning and 61.2MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 21144.02ms. Allocated memory was 102.8MB in the beginning and 14.2GB in the end (delta: 14.1GB). Free memory was 60.9MB in the beginning and 11.4GB in the end (delta: -11.3GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. * Witness Printer took 57.75ms. Allocated memory is still 14.2GB. Free memory was 11.4GB in the beginning and 11.4GB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. 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: 205]: 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, 50 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 21.1s, OverallIterations: 38, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.5s, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2002 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2002 mSDsluCounter, 6530 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2564 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 192 IncrementalHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 3966 mSDtfsCounter, 192 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=229381occurred in iteration=37, InterpolantAutomatonStates: 113, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 13.2s AutomataMinimizationTime, 38 MinimizatonAttempts, 32806 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 951 NumberOfCodeBlocks, 951 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 913 ConstructedInterpolants, 0 QuantifiedInterpolants, 2013 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 38 InterpolantComputations, 38 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! [2021-12-22 16:48:11,975 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