./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/locks/test_locks_14-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c3fed411 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_14-1.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 1e1f6c8a80d54f6d4b7b413368cc99af6eca243b930331d178961d851b56afbd --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 22:32:40,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 22:32:40,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 22:32:40,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 22:32:40,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 22:32:40,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 22:32:40,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 22:32:40,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 22:32:40,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 22:32:40,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 22:32:40,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 22:32:40,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 22:32:40,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 22:32:40,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 22:32:40,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 22:32:40,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 22:32:40,411 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 22:32:40,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 22:32:40,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 22:32:40,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 22:32:40,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 22:32:40,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 22:32:40,422 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 22:32:40,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 22:32:40,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 22:32:40,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 22:32:40,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 22:32:40,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 22:32:40,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 22:32:40,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 22:32:40,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 22:32:40,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 22:32:40,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 22:32:40,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 22:32:40,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 22:32:40,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 22:32:40,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 22:32:40,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 22:32:40,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 22:32:40,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 22:32:40,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 22:32:40,436 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-18 22:32:40,453 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 22:32:40,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 22:32:40,454 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 22:32:40,454 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 22:32:40,455 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 22:32:40,455 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 22:32:40,456 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 22:32:40,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 22:32:40,456 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 22:32:40,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 22:32:40,457 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-18 22:32:40,457 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-18 22:32:40,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 22:32:40,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-18 22:32:40,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 22:32:40,458 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-18 22:32:40,458 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-18 22:32:40,458 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-18 22:32:40,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 22:32:40,458 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-18 22:32:40,458 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-18 22:32:40,458 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 22:32:40,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 22:32:40,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 22:32:40,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 22:32:40,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 22:32:40,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 22:32:40,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 22:32:40,460 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 22:32:40,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 22:32:40,460 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 22:32:40,460 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e1f6c8a80d54f6d4b7b413368cc99af6eca243b930331d178961d851b56afbd [2021-12-18 22:32:40,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 22:32:40,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 22:32:40,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 22:32:40,651 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 22:32:40,653 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 22:32:40,654 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_14-1.c [2021-12-18 22:32:40,720 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8ea3934e/7efef05cc4cc42649b759b793b9f85ff/FLAGa8546605b [2021-12-18 22:32:41,086 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 22:32:41,086 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_14-1.c [2021-12-18 22:32:41,095 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8ea3934e/7efef05cc4cc42649b759b793b9f85ff/FLAGa8546605b [2021-12-18 22:32:41,104 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8ea3934e/7efef05cc4cc42649b759b793b9f85ff [2021-12-18 22:32:41,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 22:32:41,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 22:32:41,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 22:32:41,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 22:32:41,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 22:32:41,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:32:41" (1/1) ... [2021-12-18 22:32:41,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39f603c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:41, skipping insertion in model container [2021-12-18 22:32:41,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:32:41" (1/1) ... [2021-12-18 22:32:41,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 22:32:41,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 22:32:41,282 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_14-1.c[5283,5296] [2021-12-18 22:32:41,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 22:32:41,293 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 22:32:41,308 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_14-1.c[5283,5296] [2021-12-18 22:32:41,309 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 22:32:41,318 INFO L208 MainTranslator]: Completed translation [2021-12-18 22:32:41,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:41 WrapperNode [2021-12-18 22:32:41,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 22:32:41,319 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 22:32:41,319 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 22:32:41,319 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 22:32:41,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:41" (1/1) ... [2021-12-18 22:32:41,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:41" (1/1) ... [2021-12-18 22:32:41,347 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 182 [2021-12-18 22:32:41,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 22:32:41,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 22:32:41,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 22:32:41,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 22:32:41,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:41" (1/1) ... [2021-12-18 22:32:41,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:41" (1/1) ... [2021-12-18 22:32:41,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:41" (1/1) ... [2021-12-18 22:32:41,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:41" (1/1) ... [2021-12-18 22:32:41,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:41" (1/1) ... [2021-12-18 22:32:41,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:41" (1/1) ... [2021-12-18 22:32:41,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:41" (1/1) ... [2021-12-18 22:32:41,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 22:32:41,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 22:32:41,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 22:32:41,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 22:32:41,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:41" (1/1) ... [2021-12-18 22:32:41,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 22:32:41,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 22:32:41,407 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) [2021-12-18 22:32:41,411 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 [2021-12-18 22:32:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 22:32:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 22:32:41,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 22:32:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 22:32:41,562 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 22:32:41,563 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 22:32:41,756 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 22:32:41,761 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 22:32:41,761 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-18 22:32:41,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:32:41 BoogieIcfgContainer [2021-12-18 22:32:41,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 22:32:41,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 22:32:41,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 22:32:41,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 22:32:41,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:32:41" (1/3) ... [2021-12-18 22:32:41,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5811325a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:32:41, skipping insertion in model container [2021-12-18 22:32:41,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:32:41" (2/3) ... [2021-12-18 22:32:41,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5811325a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:32:41, skipping insertion in model container [2021-12-18 22:32:41,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:32:41" (3/3) ... [2021-12-18 22:32:41,769 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_14-1.c [2021-12-18 22:32:41,772 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 22:32:41,773 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-18 22:32:41,802 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 22:32:41,813 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 [2021-12-18 22:32:41,813 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-18 22:32:41,823 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 50 states have (on average 1.94) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:41,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-18 22:32:41,839 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:41,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-18 22:32:41,840 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:41,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:41,844 INFO L85 PathProgramCache]: Analyzing trace with hash 28943010, now seen corresponding path program 1 times [2021-12-18 22:32:41,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:41,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799558677] [2021-12-18 22:32:41,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:41,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:41,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:41,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:41,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799558677] [2021-12-18 22:32:41,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799558677] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:41,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:41,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 22:32:41,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291259611] [2021-12-18 22:32:41,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:41,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-18 22:32:41,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:41,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-18 22:32:41,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-18 22:32:41,991 INFO L87 Difference]: Start difference. First operand has 53 states, 50 states have (on average 1.94) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 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) [2021-12-18 22:32:42,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:42,007 INFO L93 Difference]: Finished difference Result 53 states and 94 transitions. [2021-12-18 22:32:42,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-18 22:32:42,009 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 [2021-12-18 22:32:42,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:42,014 INFO L225 Difference]: With dead ends: 53 [2021-12-18 22:32:42,014 INFO L226 Difference]: Without dead ends: 51 [2021-12-18 22:32:42,016 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 [2021-12-18 22:32:42,020 INFO L933 BasicCegarLoop]: 94 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, 94 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 [2021-12-18 22:32:42,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:42,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-12-18 22:32:42,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-12-18 22:32:42,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 49 states have (on average 1.8775510204081634) internal successors, (92), 50 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:42,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 92 transitions. [2021-12-18 22:32:42,052 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 92 transitions. Word has length 5 [2021-12-18 22:32:42,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:42,052 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 92 transitions. [2021-12-18 22:32:42,053 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) [2021-12-18 22:32:42,053 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 92 transitions. [2021-12-18 22:32:42,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-18 22:32:42,053 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:42,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-18 22:32:42,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 22:32:42,054 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:42,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:42,057 INFO L85 PathProgramCache]: Analyzing trace with hash 889700139, now seen corresponding path program 1 times [2021-12-18 22:32:42,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:42,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791155980] [2021-12-18 22:32:42,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:42,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:42,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:42,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:42,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791155980] [2021-12-18 22:32:42,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791155980] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:42,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:42,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 22:32:42,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565018219] [2021-12-18 22:32:42,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:42,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:42,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:42,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:42,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:42,144 INFO L87 Difference]: Start difference. First operand 51 states and 92 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) [2021-12-18 22:32:42,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:42,156 INFO L93 Difference]: Finished difference Result 50 states and 91 transitions. [2021-12-18 22:32:42,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:42,157 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 [2021-12-18 22:32:42,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:42,158 INFO L225 Difference]: With dead ends: 50 [2021-12-18 22:32:42,158 INFO L226 Difference]: Without dead ends: 48 [2021-12-18 22:32:42,161 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 [2021-12-18 22:32:42,162 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 86 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 91 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 [2021-12-18 22:32:42,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 91 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:42,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-12-18 22:32:42,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-12-18 22:32:42,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.8936170212765957) internal successors, (89), 47 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:42,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 89 transitions. [2021-12-18 22:32:42,174 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 89 transitions. Word has length 6 [2021-12-18 22:32:42,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:42,175 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 89 transitions. [2021-12-18 22:32:42,175 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) [2021-12-18 22:32:42,175 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 89 transitions. [2021-12-18 22:32:42,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-18 22:32:42,176 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:42,176 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] [2021-12-18 22:32:42,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 22:32:42,177 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:42,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:42,179 INFO L85 PathProgramCache]: Analyzing trace with hash 792943379, now seen corresponding path program 1 times [2021-12-18 22:32:42,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:42,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355439162] [2021-12-18 22:32:42,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:42,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:42,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:42,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:42,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355439162] [2021-12-18 22:32:42,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355439162] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:42,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:42,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:42,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136085150] [2021-12-18 22:32:42,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:42,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:42,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:42,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:42,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:42,235 INFO L87 Difference]: Start difference. First operand 48 states and 89 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) [2021-12-18 22:32:42,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:42,253 INFO L93 Difference]: Finished difference Result 93 states and 173 transitions. [2021-12-18 22:32:42,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:42,254 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 [2021-12-18 22:32:42,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:42,255 INFO L225 Difference]: With dead ends: 93 [2021-12-18 22:32:42,255 INFO L226 Difference]: Without dead ends: 93 [2021-12-18 22:32:42,255 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 [2021-12-18 22:32:42,256 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 68 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 175 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 [2021-12-18 22:32:42,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 175 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:42,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-12-18 22:32:42,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 63. [2021-12-18 22:32:42,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.903225806451613) internal successors, (118), 62 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:42,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 118 transitions. [2021-12-18 22:32:42,266 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 118 transitions. Word has length 21 [2021-12-18 22:32:42,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:42,267 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 118 transitions. [2021-12-18 22:32:42,267 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) [2021-12-18 22:32:42,267 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 118 transitions. [2021-12-18 22:32:42,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-18 22:32:42,268 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:42,268 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] [2021-12-18 22:32:42,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 22:32:42,269 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:42,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:42,270 INFO L85 PathProgramCache]: Analyzing trace with hash -795404523, now seen corresponding path program 1 times [2021-12-18 22:32:42,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:42,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639935706] [2021-12-18 22:32:42,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:42,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:42,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:42,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:42,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639935706] [2021-12-18 22:32:42,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639935706] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:42,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:42,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:42,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209099008] [2021-12-18 22:32:42,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:42,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:42,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:42,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:42,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:42,317 INFO L87 Difference]: Start difference. First operand 63 states and 118 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) [2021-12-18 22:32:42,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:42,330 INFO L93 Difference]: Finished difference Result 93 states and 171 transitions. [2021-12-18 22:32:42,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:42,330 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 [2021-12-18 22:32:42,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:42,331 INFO L225 Difference]: With dead ends: 93 [2021-12-18 22:32:42,331 INFO L226 Difference]: Without dead ends: 93 [2021-12-18 22:32:42,331 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 [2021-12-18 22:32:42,332 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 68 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 199 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 [2021-12-18 22:32:42,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 199 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:42,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-12-18 22:32:42,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2021-12-18 22:32:42,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.8888888888888888) internal successors, (170), 90 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:42,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 170 transitions. [2021-12-18 22:32:42,341 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 170 transitions. Word has length 21 [2021-12-18 22:32:42,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:42,342 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 170 transitions. [2021-12-18 22:32:42,342 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) [2021-12-18 22:32:42,342 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 170 transitions. [2021-12-18 22:32:42,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-18 22:32:42,343 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:42,344 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] [2021-12-18 22:32:42,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 22:32:42,344 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:42,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:42,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1188346975, now seen corresponding path program 1 times [2021-12-18 22:32:42,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:42,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571265622] [2021-12-18 22:32:42,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:42,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:42,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:42,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:42,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571265622] [2021-12-18 22:32:42,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571265622] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:42,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:42,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:42,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053039268] [2021-12-18 22:32:42,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:42,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:42,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:42,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:42,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:42,381 INFO L87 Difference]: Start difference. First operand 91 states and 170 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) [2021-12-18 22:32:42,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:42,394 INFO L93 Difference]: Finished difference Result 96 states and 173 transitions. [2021-12-18 22:32:42,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:42,394 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 [2021-12-18 22:32:42,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:42,395 INFO L225 Difference]: With dead ends: 96 [2021-12-18 22:32:42,395 INFO L226 Difference]: Without dead ends: 96 [2021-12-18 22:32:42,395 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 [2021-12-18 22:32:42,396 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 70 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 224 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 [2021-12-18 22:32:42,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 224 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:42,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-12-18 22:32:42,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2021-12-18 22:32:42,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.8494623655913978) internal successors, (172), 93 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:42,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 172 transitions. [2021-12-18 22:32:42,401 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 172 transitions. Word has length 22 [2021-12-18 22:32:42,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:42,401 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 172 transitions. [2021-12-18 22:32:42,401 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) [2021-12-18 22:32:42,401 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 172 transitions. [2021-12-18 22:32:42,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-18 22:32:42,402 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:42,402 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] [2021-12-18 22:32:42,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 22:32:42,402 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:42,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:42,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1112475615, now seen corresponding path program 1 times [2021-12-18 22:32:42,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:42,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357293115] [2021-12-18 22:32:42,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:42,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:42,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:42,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:42,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357293115] [2021-12-18 22:32:42,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357293115] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:42,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:42,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:42,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707767783] [2021-12-18 22:32:42,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:42,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:42,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:42,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:42,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:42,428 INFO L87 Difference]: Start difference. First operand 94 states and 172 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) [2021-12-18 22:32:42,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:42,442 INFO L93 Difference]: Finished difference Result 179 states and 330 transitions. [2021-12-18 22:32:42,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:42,442 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 [2021-12-18 22:32:42,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:42,443 INFO L225 Difference]: With dead ends: 179 [2021-12-18 22:32:42,443 INFO L226 Difference]: Without dead ends: 179 [2021-12-18 22:32:42,443 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 [2021-12-18 22:32:42,444 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 65 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 173 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 [2021-12-18 22:32:42,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 173 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:42,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-12-18 22:32:42,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 125. [2021-12-18 22:32:42,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.846774193548387) internal successors, (229), 124 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:42,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 229 transitions. [2021-12-18 22:32:42,450 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 229 transitions. Word has length 22 [2021-12-18 22:32:42,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:42,451 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 229 transitions. [2021-12-18 22:32:42,451 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) [2021-12-18 22:32:42,451 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 229 transitions. [2021-12-18 22:32:42,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-18 22:32:42,451 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:42,451 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:32:42,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 22:32:42,452 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:42,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:42,452 INFO L85 PathProgramCache]: Analyzing trace with hash -475872287, now seen corresponding path program 1 times [2021-12-18 22:32:42,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:42,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249403290] [2021-12-18 22:32:42,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:42,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:42,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:42,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:42,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249403290] [2021-12-18 22:32:42,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249403290] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:42,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:42,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:42,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779116773] [2021-12-18 22:32:42,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:42,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:42,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:42,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:42,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:42,491 INFO L87 Difference]: Start difference. First operand 125 states and 229 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) [2021-12-18 22:32:42,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:42,500 INFO L93 Difference]: Finished difference Result 181 states and 328 transitions. [2021-12-18 22:32:42,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:42,500 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 [2021-12-18 22:32:42,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:42,501 INFO L225 Difference]: With dead ends: 181 [2021-12-18 22:32:42,501 INFO L226 Difference]: Without dead ends: 181 [2021-12-18 22:32:42,501 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 [2021-12-18 22:32:42,502 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 67 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 200 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 [2021-12-18 22:32:42,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 200 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:42,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-12-18 22:32:42,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2021-12-18 22:32:42,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.8370786516853932) internal successors, (327), 178 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:42,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 327 transitions. [2021-12-18 22:32:42,523 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 327 transitions. Word has length 22 [2021-12-18 22:32:42,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:42,524 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 327 transitions. [2021-12-18 22:32:42,524 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) [2021-12-18 22:32:42,524 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 327 transitions. [2021-12-18 22:32:42,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-18 22:32:42,524 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:42,524 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] [2021-12-18 22:32:42,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 22:32:42,525 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:42,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:42,525 INFO L85 PathProgramCache]: Analyzing trace with hash 127218090, now seen corresponding path program 1 times [2021-12-18 22:32:42,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:42,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682616343] [2021-12-18 22:32:42,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:42,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:42,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:42,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:42,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682616343] [2021-12-18 22:32:42,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682616343] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:42,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:42,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:42,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230635959] [2021-12-18 22:32:42,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:42,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:42,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:42,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:42,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:42,564 INFO L87 Difference]: Start difference. First operand 179 states and 327 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) [2021-12-18 22:32:42,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:42,577 INFO L93 Difference]: Finished difference Result 183 states and 328 transitions. [2021-12-18 22:32:42,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:42,577 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 [2021-12-18 22:32:42,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:42,578 INFO L225 Difference]: With dead ends: 183 [2021-12-18 22:32:42,579 INFO L226 Difference]: Without dead ends: 183 [2021-12-18 22:32:42,579 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 [2021-12-18 22:32:42,580 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 69 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 220 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 [2021-12-18 22:32:42,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 220 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:42,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-12-18 22:32:42,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2021-12-18 22:32:42,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.8166666666666667) internal successors, (327), 180 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:42,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 327 transitions. [2021-12-18 22:32:42,593 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 327 transitions. Word has length 23 [2021-12-18 22:32:42,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:42,593 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 327 transitions. [2021-12-18 22:32:42,594 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) [2021-12-18 22:32:42,596 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 327 transitions. [2021-12-18 22:32:42,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-18 22:32:42,597 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:42,597 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] [2021-12-18 22:32:42,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 22:32:42,597 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:42,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:42,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1866926616, now seen corresponding path program 1 times [2021-12-18 22:32:42,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:42,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486921048] [2021-12-18 22:32:42,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:42,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:42,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:42,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:42,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486921048] [2021-12-18 22:32:42,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486921048] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:42,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:42,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:42,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109472682] [2021-12-18 22:32:42,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:42,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:42,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:42,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:42,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:42,643 INFO L87 Difference]: Start difference. First operand 181 states and 327 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) [2021-12-18 22:32:42,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:42,653 INFO L93 Difference]: Finished difference Result 351 states and 628 transitions. [2021-12-18 22:32:42,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:42,653 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 [2021-12-18 22:32:42,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:42,654 INFO L225 Difference]: With dead ends: 351 [2021-12-18 22:32:42,654 INFO L226 Difference]: Without dead ends: 351 [2021-12-18 22:32:42,654 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 [2021-12-18 22:32:42,655 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 67 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 175 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 [2021-12-18 22:32:42,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 175 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:42,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-12-18 22:32:42,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 349. [2021-12-18 22:32:42,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.8017241379310345) internal successors, (627), 348 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:42,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 627 transitions. [2021-12-18 22:32:42,662 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 627 transitions. Word has length 23 [2021-12-18 22:32:42,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:42,662 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 627 transitions. [2021-12-18 22:32:42,662 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) [2021-12-18 22:32:42,662 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 627 transitions. [2021-12-18 22:32:42,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-18 22:32:42,663 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:42,663 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] [2021-12-18 22:32:42,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 22:32:42,663 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:42,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:42,663 INFO L85 PathProgramCache]: Analyzing trace with hash -278578714, now seen corresponding path program 1 times [2021-12-18 22:32:42,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:42,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001286918] [2021-12-18 22:32:42,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:42,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:42,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:42,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:42,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001286918] [2021-12-18 22:32:42,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001286918] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:42,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:42,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:42,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647487769] [2021-12-18 22:32:42,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:42,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:42,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:42,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:42,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:42,696 INFO L87 Difference]: Start difference. First operand 349 states and 627 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) [2021-12-18 22:32:42,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:42,706 INFO L93 Difference]: Finished difference Result 447 states and 808 transitions. [2021-12-18 22:32:42,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:42,706 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 [2021-12-18 22:32:42,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:42,708 INFO L225 Difference]: With dead ends: 447 [2021-12-18 22:32:42,709 INFO L226 Difference]: Without dead ends: 447 [2021-12-18 22:32:42,709 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 [2021-12-18 22:32:42,709 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 62 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 242 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 [2021-12-18 22:32:42,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 242 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:42,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-12-18 22:32:42,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 349. [2021-12-18 22:32:42,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.7902298850574712) internal successors, (623), 348 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:42,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 623 transitions. [2021-12-18 22:32:42,717 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 623 transitions. Word has length 23 [2021-12-18 22:32:42,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:42,717 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 623 transitions. [2021-12-18 22:32:42,717 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) [2021-12-18 22:32:42,717 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 623 transitions. [2021-12-18 22:32:42,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-18 22:32:42,722 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:42,722 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] [2021-12-18 22:32:42,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-18 22:32:42,722 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:42,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:42,722 INFO L85 PathProgramCache]: Analyzing trace with hash -2039937514, now seen corresponding path program 1 times [2021-12-18 22:32:42,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:42,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493019622] [2021-12-18 22:32:42,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:42,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:42,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:42,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:42,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493019622] [2021-12-18 22:32:42,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493019622] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:42,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:42,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:42,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847316846] [2021-12-18 22:32:42,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:42,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:42,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:42,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:42,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:42,761 INFO L87 Difference]: Start difference. First operand 349 states and 623 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) [2021-12-18 22:32:42,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:42,772 INFO L93 Difference]: Finished difference Result 659 states and 1184 transitions. [2021-12-18 22:32:42,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:42,772 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 [2021-12-18 22:32:42,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:42,774 INFO L225 Difference]: With dead ends: 659 [2021-12-18 22:32:42,774 INFO L226 Difference]: Without dead ends: 659 [2021-12-18 22:32:42,774 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 [2021-12-18 22:32:42,775 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 59 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 169 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 [2021-12-18 22:32:42,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 169 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:42,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-12-18 22:32:42,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 481. [2021-12-18 22:32:42,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.7645833333333334) internal successors, (847), 480 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:42,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 847 transitions. [2021-12-18 22:32:42,782 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 847 transitions. Word has length 24 [2021-12-18 22:32:42,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:42,782 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 847 transitions. [2021-12-18 22:32:42,782 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) [2021-12-18 22:32:42,782 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 847 transitions. [2021-12-18 22:32:42,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-18 22:32:42,783 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:42,783 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] [2021-12-18 22:32:42,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-18 22:32:42,783 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:42,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:42,784 INFO L85 PathProgramCache]: Analyzing trace with hash 666681880, now seen corresponding path program 1 times [2021-12-18 22:32:42,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:42,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030036416] [2021-12-18 22:32:42,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:42,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:42,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:42,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:42,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030036416] [2021-12-18 22:32:42,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030036416] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:42,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:42,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:42,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97707028] [2021-12-18 22:32:42,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:42,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:42,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:42,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:42,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:42,824 INFO L87 Difference]: Start difference. First operand 481 states and 847 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) [2021-12-18 22:32:42,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:42,833 INFO L93 Difference]: Finished difference Result 683 states and 1196 transitions. [2021-12-18 22:32:42,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:42,833 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 [2021-12-18 22:32:42,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:42,835 INFO L225 Difference]: With dead ends: 683 [2021-12-18 22:32:42,835 INFO L226 Difference]: Without dead ends: 683 [2021-12-18 22:32:42,835 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 [2021-12-18 22:32:42,836 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 65 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 202 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 [2021-12-18 22:32:42,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 202 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:42,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2021-12-18 22:32:42,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 681. [2021-12-18 22:32:42,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 680 states have (on average 1.7573529411764706) internal successors, (1195), 680 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:42,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1195 transitions. [2021-12-18 22:32:42,845 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1195 transitions. Word has length 24 [2021-12-18 22:32:42,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:42,846 INFO L470 AbstractCegarLoop]: Abstraction has 681 states and 1195 transitions. [2021-12-18 22:32:42,846 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) [2021-12-18 22:32:42,846 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1195 transitions. [2021-12-18 22:32:42,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-18 22:32:42,847 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:42,847 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] [2021-12-18 22:32:42,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-18 22:32:42,847 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:42,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:42,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1186659581, now seen corresponding path program 1 times [2021-12-18 22:32:42,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:42,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207357866] [2021-12-18 22:32:42,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:42,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:42,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:42,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:42,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207357866] [2021-12-18 22:32:42,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207357866] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:42,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:42,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:42,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297891731] [2021-12-18 22:32:42,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:42,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:42,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:42,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:42,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:42,894 INFO L87 Difference]: Start difference. First operand 681 states and 1195 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) [2021-12-18 22:32:42,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:42,906 INFO L93 Difference]: Finished difference Result 695 states and 1204 transitions. [2021-12-18 22:32:42,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:42,906 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 [2021-12-18 22:32:42,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:42,908 INFO L225 Difference]: With dead ends: 695 [2021-12-18 22:32:42,908 INFO L226 Difference]: Without dead ends: 695 [2021-12-18 22:32:42,909 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 [2021-12-18 22:32:42,910 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 67 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 212 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 [2021-12-18 22:32:42,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 212 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:42,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2021-12-18 22:32:42,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 693. [2021-12-18 22:32:42,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 692 states have (on average 1.7384393063583814) internal successors, (1203), 692 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:42,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1203 transitions. [2021-12-18 22:32:42,919 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1203 transitions. Word has length 25 [2021-12-18 22:32:42,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:42,919 INFO L470 AbstractCegarLoop]: Abstraction has 693 states and 1203 transitions. [2021-12-18 22:32:42,919 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) [2021-12-18 22:32:42,919 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1203 transitions. [2021-12-18 22:32:42,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-18 22:32:42,921 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:42,921 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] [2021-12-18 22:32:42,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-18 22:32:42,921 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:42,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:42,921 INFO L85 PathProgramCache]: Analyzing trace with hash -807485125, now seen corresponding path program 1 times [2021-12-18 22:32:42,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:42,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188370703] [2021-12-18 22:32:42,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:42,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:42,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:42,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:42,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188370703] [2021-12-18 22:32:42,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188370703] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:42,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:42,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:42,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181914175] [2021-12-18 22:32:42,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:42,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:42,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:42,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:42,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:42,947 INFO L87 Difference]: Start difference. First operand 693 states and 1203 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) [2021-12-18 22:32:42,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:42,958 INFO L93 Difference]: Finished difference Result 1287 states and 2252 transitions. [2021-12-18 22:32:42,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:42,958 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 [2021-12-18 22:32:42,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:42,962 INFO L225 Difference]: With dead ends: 1287 [2021-12-18 22:32:42,962 INFO L226 Difference]: Without dead ends: 1287 [2021-12-18 22:32:42,962 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 [2021-12-18 22:32:42,963 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 56 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 167 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 [2021-12-18 22:32:42,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 167 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:42,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2021-12-18 22:32:42,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 965. [2021-12-18 22:32:42,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 964 states have (on average 1.704356846473029) internal successors, (1643), 964 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:42,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1643 transitions. [2021-12-18 22:32:42,976 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1643 transitions. Word has length 25 [2021-12-18 22:32:42,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:42,977 INFO L470 AbstractCegarLoop]: Abstraction has 965 states and 1643 transitions. [2021-12-18 22:32:42,977 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) [2021-12-18 22:32:42,977 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1643 transitions. [2021-12-18 22:32:42,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-18 22:32:42,978 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:42,978 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] [2021-12-18 22:32:42,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-18 22:32:42,979 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:42,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:42,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1899134269, now seen corresponding path program 1 times [2021-12-18 22:32:42,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:42,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929009994] [2021-12-18 22:32:42,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:42,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:43,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:43,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:43,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929009994] [2021-12-18 22:32:43,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929009994] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:43,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:43,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:43,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955259874] [2021-12-18 22:32:43,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:43,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:43,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:43,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:43,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:43,014 INFO L87 Difference]: Start difference. First operand 965 states and 1643 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) [2021-12-18 22:32:43,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:43,028 INFO L93 Difference]: Finished difference Result 1351 states and 2292 transitions. [2021-12-18 22:32:43,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:43,029 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 [2021-12-18 22:32:43,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:43,033 INFO L225 Difference]: With dead ends: 1351 [2021-12-18 22:32:43,033 INFO L226 Difference]: Without dead ends: 1351 [2021-12-18 22:32:43,034 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 [2021-12-18 22:32:43,035 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 64 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 203 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 [2021-12-18 22:32:43,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 203 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:43,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2021-12-18 22:32:43,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1349. [2021-12-18 22:32:43,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1348 states have (on average 1.6995548961424332) internal successors, (2291), 1348 states have internal predecessors, (2291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:43,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 2291 transitions. [2021-12-18 22:32:43,056 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 2291 transitions. Word has length 25 [2021-12-18 22:32:43,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:43,056 INFO L470 AbstractCegarLoop]: Abstraction has 1349 states and 2291 transitions. [2021-12-18 22:32:43,057 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) [2021-12-18 22:32:43,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 2291 transitions. [2021-12-18 22:32:43,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-18 22:32:43,058 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:43,058 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] [2021-12-18 22:32:43,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-18 22:32:43,059 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:43,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:43,059 INFO L85 PathProgramCache]: Analyzing trace with hash 737978317, now seen corresponding path program 1 times [2021-12-18 22:32:43,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:43,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550941563] [2021-12-18 22:32:43,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:43,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:43,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:43,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:43,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550941563] [2021-12-18 22:32:43,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550941563] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:43,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:43,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:43,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813918407] [2021-12-18 22:32:43,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:43,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:43,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:43,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:43,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:43,086 INFO L87 Difference]: Start difference. First operand 1349 states and 2291 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) [2021-12-18 22:32:43,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:43,100 INFO L93 Difference]: Finished difference Result 1367 states and 2292 transitions. [2021-12-18 22:32:43,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:43,100 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 [2021-12-18 22:32:43,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:43,103 INFO L225 Difference]: With dead ends: 1367 [2021-12-18 22:32:43,104 INFO L226 Difference]: Without dead ends: 1367 [2021-12-18 22:32:43,104 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 [2021-12-18 22:32:43,105 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 66 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 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 [2021-12-18 22:32:43,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 208 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:43,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2021-12-18 22:32:43,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 1365. [2021-12-18 22:32:43,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1364 states have (on average 1.6796187683284458) internal successors, (2291), 1364 states have internal predecessors, (2291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:43,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 2291 transitions. [2021-12-18 22:32:43,127 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 2291 transitions. Word has length 26 [2021-12-18 22:32:43,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:43,128 INFO L470 AbstractCegarLoop]: Abstraction has 1365 states and 2291 transitions. [2021-12-18 22:32:43,128 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) [2021-12-18 22:32:43,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 2291 transitions. [2021-12-18 22:32:43,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-18 22:32:43,129 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:43,129 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] [2021-12-18 22:32:43,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-18 22:32:43,129 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:43,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:43,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1256166389, now seen corresponding path program 1 times [2021-12-18 22:32:43,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:43,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619056813] [2021-12-18 22:32:43,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:43,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:43,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:43,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:43,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619056813] [2021-12-18 22:32:43,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619056813] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:43,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:43,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:43,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767529764] [2021-12-18 22:32:43,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:43,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:43,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:43,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:43,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:43,150 INFO L87 Difference]: Start difference. First operand 1365 states and 2291 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) [2021-12-18 22:32:43,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:43,163 INFO L93 Difference]: Finished difference Result 2503 states and 4244 transitions. [2021-12-18 22:32:43,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:43,164 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 [2021-12-18 22:32:43,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:43,170 INFO L225 Difference]: With dead ends: 2503 [2021-12-18 22:32:43,170 INFO L226 Difference]: Without dead ends: 2503 [2021-12-18 22:32:43,170 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 [2021-12-18 22:32:43,171 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 53 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 165 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 [2021-12-18 22:32:43,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 165 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:43,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2021-12-18 22:32:43,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 1925. [2021-12-18 22:32:43,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1924 states have (on average 1.6398128898128899) internal successors, (3155), 1924 states have internal predecessors, (3155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:43,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 3155 transitions. [2021-12-18 22:32:43,208 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 3155 transitions. Word has length 26 [2021-12-18 22:32:43,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:43,208 INFO L470 AbstractCegarLoop]: Abstraction has 1925 states and 3155 transitions. [2021-12-18 22:32:43,208 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) [2021-12-18 22:32:43,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 3155 transitions. [2021-12-18 22:32:43,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-18 22:32:43,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:43,210 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] [2021-12-18 22:32:43,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-18 22:32:43,210 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:43,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:43,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1450453005, now seen corresponding path program 1 times [2021-12-18 22:32:43,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:43,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892022932] [2021-12-18 22:32:43,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:43,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:43,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:43,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:43,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892022932] [2021-12-18 22:32:43,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892022932] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:43,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:43,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:43,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122189321] [2021-12-18 22:32:43,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:43,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:43,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:43,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:43,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:43,225 INFO L87 Difference]: Start difference. First operand 1925 states and 3155 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) [2021-12-18 22:32:43,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:43,239 INFO L93 Difference]: Finished difference Result 2663 states and 4356 transitions. [2021-12-18 22:32:43,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:43,239 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 [2021-12-18 22:32:43,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:43,246 INFO L225 Difference]: With dead ends: 2663 [2021-12-18 22:32:43,246 INFO L226 Difference]: Without dead ends: 2663 [2021-12-18 22:32:43,246 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 [2021-12-18 22:32:43,246 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 63 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 204 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 [2021-12-18 22:32:43,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 204 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:43,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2021-12-18 22:32:43,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2661. [2021-12-18 22:32:43,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2661 states, 2660 states have (on average 1.637218045112782) internal successors, (4355), 2660 states have internal predecessors, (4355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:43,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2661 states to 2661 states and 4355 transitions. [2021-12-18 22:32:43,291 INFO L78 Accepts]: Start accepts. Automaton has 2661 states and 4355 transitions. Word has length 26 [2021-12-18 22:32:43,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:43,292 INFO L470 AbstractCegarLoop]: Abstraction has 2661 states and 4355 transitions. [2021-12-18 22:32:43,292 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) [2021-12-18 22:32:43,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2661 states and 4355 transitions. [2021-12-18 22:32:43,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-18 22:32:43,293 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:43,293 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] [2021-12-18 22:32:43,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-18 22:32:43,294 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:43,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:43,294 INFO L85 PathProgramCache]: Analyzing trace with hash -286238638, now seen corresponding path program 1 times [2021-12-18 22:32:43,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:43,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110982056] [2021-12-18 22:32:43,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:43,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:43,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:43,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:43,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110982056] [2021-12-18 22:32:43,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110982056] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:43,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:43,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:43,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883601271] [2021-12-18 22:32:43,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:43,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:43,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:43,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:43,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:43,316 INFO L87 Difference]: Start difference. First operand 2661 states and 4355 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) [2021-12-18 22:32:43,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:43,329 INFO L93 Difference]: Finished difference Result 2695 states and 4356 transitions. [2021-12-18 22:32:43,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:43,330 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 [2021-12-18 22:32:43,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:43,335 INFO L225 Difference]: With dead ends: 2695 [2021-12-18 22:32:43,335 INFO L226 Difference]: Without dead ends: 2695 [2021-12-18 22:32:43,336 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 [2021-12-18 22:32:43,336 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 65 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 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 [2021-12-18 22:32:43,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 204 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:43,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2021-12-18 22:32:43,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 2693. [2021-12-18 22:32:43,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2693 states, 2692 states have (on average 1.6177563150074294) internal successors, (4355), 2692 states have internal predecessors, (4355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:43,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2693 states to 2693 states and 4355 transitions. [2021-12-18 22:32:43,369 INFO L78 Accepts]: Start accepts. Automaton has 2693 states and 4355 transitions. Word has length 27 [2021-12-18 22:32:43,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:43,369 INFO L470 AbstractCegarLoop]: Abstraction has 2693 states and 4355 transitions. [2021-12-18 22:32:43,369 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) [2021-12-18 22:32:43,369 INFO L276 IsEmpty]: Start isEmpty. Operand 2693 states and 4355 transitions. [2021-12-18 22:32:43,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-18 22:32:43,371 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:43,371 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] [2021-12-18 22:32:43,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-18 22:32:43,371 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:43,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:43,372 INFO L85 PathProgramCache]: Analyzing trace with hash 2014583952, now seen corresponding path program 1 times [2021-12-18 22:32:43,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:43,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133402576] [2021-12-18 22:32:43,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:43,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:43,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:43,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:43,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133402576] [2021-12-18 22:32:43,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133402576] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:43,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:43,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:43,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024995816] [2021-12-18 22:32:43,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:43,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:43,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:43,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:43,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:43,390 INFO L87 Difference]: Start difference. First operand 2693 states and 4355 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) [2021-12-18 22:32:43,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:43,408 INFO L93 Difference]: Finished difference Result 4871 states and 7972 transitions. [2021-12-18 22:32:43,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:43,408 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 [2021-12-18 22:32:43,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:43,419 INFO L225 Difference]: With dead ends: 4871 [2021-12-18 22:32:43,420 INFO L226 Difference]: Without dead ends: 4871 [2021-12-18 22:32:43,420 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 [2021-12-18 22:32:43,420 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 50 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 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 [2021-12-18 22:32:43,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 163 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:43,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4871 states. [2021-12-18 22:32:43,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 3845. [2021-12-18 22:32:43,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3845 states, 3844 states have (on average 1.5741415192507804) internal successors, (6051), 3844 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:43,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 6051 transitions. [2021-12-18 22:32:43,479 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 6051 transitions. Word has length 27 [2021-12-18 22:32:43,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:43,479 INFO L470 AbstractCegarLoop]: Abstraction has 3845 states and 6051 transitions. [2021-12-18 22:32:43,479 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) [2021-12-18 22:32:43,479 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 6051 transitions. [2021-12-18 22:32:43,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-18 22:32:43,482 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:43,482 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] [2021-12-18 22:32:43,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-18 22:32:43,482 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:43,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:43,483 INFO L85 PathProgramCache]: Analyzing trace with hash 426236050, now seen corresponding path program 1 times [2021-12-18 22:32:43,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:43,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664716771] [2021-12-18 22:32:43,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:43,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:43,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:43,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:43,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664716771] [2021-12-18 22:32:43,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664716771] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:43,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:43,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:43,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793770995] [2021-12-18 22:32:43,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:43,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:43,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:43,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:43,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:43,502 INFO L87 Difference]: Start difference. First operand 3845 states and 6051 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) [2021-12-18 22:32:43,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:43,521 INFO L93 Difference]: Finished difference Result 5255 states and 8260 transitions. [2021-12-18 22:32:43,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:43,522 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 [2021-12-18 22:32:43,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:43,534 INFO L225 Difference]: With dead ends: 5255 [2021-12-18 22:32:43,539 INFO L226 Difference]: Without dead ends: 5255 [2021-12-18 22:32:43,539 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 [2021-12-18 22:32:43,540 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 62 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 205 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 [2021-12-18 22:32:43,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 205 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:43,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5255 states. [2021-12-18 22:32:43,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5255 to 5253. [2021-12-18 22:32:43,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5253 states, 5252 states have (on average 1.5725437928408226) internal successors, (8259), 5252 states have internal predecessors, (8259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:43,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5253 states to 5253 states and 8259 transitions. [2021-12-18 22:32:43,633 INFO L78 Accepts]: Start accepts. Automaton has 5253 states and 8259 transitions. Word has length 27 [2021-12-18 22:32:43,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:43,634 INFO L470 AbstractCegarLoop]: Abstraction has 5253 states and 8259 transitions. [2021-12-18 22:32:43,634 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) [2021-12-18 22:32:43,634 INFO L276 IsEmpty]: Start isEmpty. Operand 5253 states and 8259 transitions. [2021-12-18 22:32:43,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-18 22:32:43,637 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:43,637 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:32:43,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-18 22:32:43,638 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:43,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:43,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1972192830, now seen corresponding path program 1 times [2021-12-18 22:32:43,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:43,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814220751] [2021-12-18 22:32:43,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:43,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:43,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:43,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:43,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814220751] [2021-12-18 22:32:43,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814220751] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:43,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:43,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:43,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307101343] [2021-12-18 22:32:43,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:43,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:43,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:43,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:43,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:43,656 INFO L87 Difference]: Start difference. First operand 5253 states and 8259 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) [2021-12-18 22:32:43,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:43,680 INFO L93 Difference]: Finished difference Result 5319 states and 8260 transitions. [2021-12-18 22:32:43,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:43,680 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 [2021-12-18 22:32:43,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:43,694 INFO L225 Difference]: With dead ends: 5319 [2021-12-18 22:32:43,694 INFO L226 Difference]: Without dead ends: 5319 [2021-12-18 22:32:43,695 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 [2021-12-18 22:32:43,696 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 64 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 200 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 [2021-12-18 22:32:43,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 200 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:43,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5319 states. [2021-12-18 22:32:43,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5319 to 5317. [2021-12-18 22:32:43,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5317 states, 5316 states have (on average 1.5536117381489842) internal successors, (8259), 5316 states have internal predecessors, (8259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:43,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5317 states to 5317 states and 8259 transitions. [2021-12-18 22:32:43,787 INFO L78 Accepts]: Start accepts. Automaton has 5317 states and 8259 transitions. Word has length 28 [2021-12-18 22:32:43,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:43,787 INFO L470 AbstractCegarLoop]: Abstraction has 5317 states and 8259 transitions. [2021-12-18 22:32:43,787 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) [2021-12-18 22:32:43,788 INFO L276 IsEmpty]: Start isEmpty. Operand 5317 states and 8259 transitions. [2021-12-18 22:32:43,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-18 22:32:43,792 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:43,792 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] [2021-12-18 22:32:43,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-18 22:32:43,793 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:43,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:43,793 INFO L85 PathProgramCache]: Analyzing trace with hash 328629760, now seen corresponding path program 1 times [2021-12-18 22:32:43,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:43,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579355954] [2021-12-18 22:32:43,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:43,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:43,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:43,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:43,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579355954] [2021-12-18 22:32:43,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579355954] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:43,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:43,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:43,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974566230] [2021-12-18 22:32:43,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:43,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:43,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:43,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:43,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:43,810 INFO L87 Difference]: Start difference. First operand 5317 states and 8259 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) [2021-12-18 22:32:43,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:43,845 INFO L93 Difference]: Finished difference Result 9479 states and 14916 transitions. [2021-12-18 22:32:43,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:43,846 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 [2021-12-18 22:32:43,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:43,859 INFO L225 Difference]: With dead ends: 9479 [2021-12-18 22:32:43,859 INFO L226 Difference]: Without dead ends: 9479 [2021-12-18 22:32:43,859 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 [2021-12-18 22:32:43,860 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 47 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 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 [2021-12-18 22:32:43,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 161 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:43,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9479 states. [2021-12-18 22:32:43,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9479 to 7685. [2021-12-18 22:32:43,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7685 states, 7684 states have (on average 1.5079385736595523) internal successors, (11587), 7684 states have internal predecessors, (11587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:43,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7685 states to 7685 states and 11587 transitions. [2021-12-18 22:32:43,973 INFO L78 Accepts]: Start accepts. Automaton has 7685 states and 11587 transitions. Word has length 28 [2021-12-18 22:32:43,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:43,973 INFO L470 AbstractCegarLoop]: Abstraction has 7685 states and 11587 transitions. [2021-12-18 22:32:43,973 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) [2021-12-18 22:32:43,973 INFO L276 IsEmpty]: Start isEmpty. Operand 7685 states and 11587 transitions. [2021-12-18 22:32:43,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-18 22:32:43,979 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:43,979 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] [2021-12-18 22:32:43,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-18 22:32:43,980 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:43,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:43,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1259718142, now seen corresponding path program 1 times [2021-12-18 22:32:43,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:43,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659738368] [2021-12-18 22:32:43,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:43,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:44,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:44,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:44,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659738368] [2021-12-18 22:32:44,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659738368] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:44,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:44,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:44,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140033825] [2021-12-18 22:32:44,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:44,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:44,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:44,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:44,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:44,010 INFO L87 Difference]: Start difference. First operand 7685 states and 11587 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) [2021-12-18 22:32:44,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:44,034 INFO L93 Difference]: Finished difference Result 10375 states and 15620 transitions. [2021-12-18 22:32:44,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:44,034 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 [2021-12-18 22:32:44,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:44,048 INFO L225 Difference]: With dead ends: 10375 [2021-12-18 22:32:44,048 INFO L226 Difference]: Without dead ends: 10375 [2021-12-18 22:32:44,048 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 [2021-12-18 22:32:44,049 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 61 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 206 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 [2021-12-18 22:32:44,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 206 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:44,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10375 states. [2021-12-18 22:32:44,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10375 to 10373. [2021-12-18 22:32:44,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10373 states, 10372 states have (on average 1.5058812186656383) internal successors, (15619), 10372 states have internal predecessors, (15619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:44,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10373 states to 10373 states and 15619 transitions. [2021-12-18 22:32:44,253 INFO L78 Accepts]: Start accepts. Automaton has 10373 states and 15619 transitions. Word has length 28 [2021-12-18 22:32:44,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:44,253 INFO L470 AbstractCegarLoop]: Abstraction has 10373 states and 15619 transitions. [2021-12-18 22:32:44,253 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) [2021-12-18 22:32:44,253 INFO L276 IsEmpty]: Start isEmpty. Operand 10373 states and 15619 transitions. [2021-12-18 22:32:44,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-18 22:32:44,259 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:44,259 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] [2021-12-18 22:32:44,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-18 22:32:44,260 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:44,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:44,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1597802407, now seen corresponding path program 1 times [2021-12-18 22:32:44,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:44,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193977201] [2021-12-18 22:32:44,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:44,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:44,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:44,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:44,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193977201] [2021-12-18 22:32:44,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193977201] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:44,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:44,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:44,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450447649] [2021-12-18 22:32:44,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:44,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:44,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:44,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:44,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:44,303 INFO L87 Difference]: Start difference. First operand 10373 states and 15619 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) [2021-12-18 22:32:44,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:44,343 INFO L93 Difference]: Finished difference Result 10503 states and 15620 transitions. [2021-12-18 22:32:44,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:44,344 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 [2021-12-18 22:32:44,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:44,356 INFO L225 Difference]: With dead ends: 10503 [2021-12-18 22:32:44,356 INFO L226 Difference]: Without dead ends: 10503 [2021-12-18 22:32:44,356 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 [2021-12-18 22:32:44,357 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 63 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 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 [2021-12-18 22:32:44,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 196 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:44,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10503 states. [2021-12-18 22:32:44,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10503 to 10501. [2021-12-18 22:32:44,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10501 states, 10500 states have (on average 1.4875238095238095) internal successors, (15619), 10500 states have internal predecessors, (15619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:44,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10501 states to 10501 states and 15619 transitions. [2021-12-18 22:32:44,488 INFO L78 Accepts]: Start accepts. Automaton has 10501 states and 15619 transitions. Word has length 29 [2021-12-18 22:32:44,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:44,488 INFO L470 AbstractCegarLoop]: Abstraction has 10501 states and 15619 transitions. [2021-12-18 22:32:44,488 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) [2021-12-18 22:32:44,488 INFO L276 IsEmpty]: Start isEmpty. Operand 10501 states and 15619 transitions. [2021-12-18 22:32:44,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-18 22:32:44,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:44,495 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] [2021-12-18 22:32:44,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-18 22:32:44,496 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:44,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:44,496 INFO L85 PathProgramCache]: Analyzing trace with hash -396342299, now seen corresponding path program 1 times [2021-12-18 22:32:44,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:44,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580214838] [2021-12-18 22:32:44,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:44,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:44,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:44,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:44,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580214838] [2021-12-18 22:32:44,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580214838] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:44,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:44,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:44,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792504877] [2021-12-18 22:32:44,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:44,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:44,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:44,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:44,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:44,512 INFO L87 Difference]: Start difference. First operand 10501 states and 15619 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) [2021-12-18 22:32:44,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:44,586 INFO L93 Difference]: Finished difference Result 18439 states and 27780 transitions. [2021-12-18 22:32:44,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:44,587 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 [2021-12-18 22:32:44,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:44,612 INFO L225 Difference]: With dead ends: 18439 [2021-12-18 22:32:44,613 INFO L226 Difference]: Without dead ends: 18439 [2021-12-18 22:32:44,613 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 [2021-12-18 22:32:44,614 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 44 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 159 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 [2021-12-18 22:32:44,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 159 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:44,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18439 states. [2021-12-18 22:32:44,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18439 to 15365. [2021-12-18 22:32:44,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15365 states, 15364 states have (on average 1.4414865920333246) internal successors, (22147), 15364 states have internal predecessors, (22147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:44,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15365 states to 15365 states and 22147 transitions. [2021-12-18 22:32:44,799 INFO L78 Accepts]: Start accepts. Automaton has 15365 states and 22147 transitions. Word has length 29 [2021-12-18 22:32:44,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:44,799 INFO L470 AbstractCegarLoop]: Abstraction has 15365 states and 22147 transitions. [2021-12-18 22:32:44,799 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) [2021-12-18 22:32:44,799 INFO L276 IsEmpty]: Start isEmpty. Operand 15365 states and 22147 transitions. [2021-12-18 22:32:44,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-18 22:32:44,810 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:44,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:32:44,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-18 22:32:44,810 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:44,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:44,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1984690201, now seen corresponding path program 1 times [2021-12-18 22:32:44,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:44,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545195880] [2021-12-18 22:32:44,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:44,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:44,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:44,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:44,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545195880] [2021-12-18 22:32:44,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545195880] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:44,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:44,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:44,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088896087] [2021-12-18 22:32:44,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:44,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:44,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:44,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:44,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:44,822 INFO L87 Difference]: Start difference. First operand 15365 states and 22147 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) [2021-12-18 22:32:44,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:44,861 INFO L93 Difference]: Finished difference Result 20487 states and 29444 transitions. [2021-12-18 22:32:44,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:44,861 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 [2021-12-18 22:32:44,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:44,884 INFO L225 Difference]: With dead ends: 20487 [2021-12-18 22:32:44,884 INFO L226 Difference]: Without dead ends: 20487 [2021-12-18 22:32:44,884 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 [2021-12-18 22:32:44,884 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 60 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 207 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 [2021-12-18 22:32:44,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 207 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:44,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20487 states. [2021-12-18 22:32:45,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20487 to 20485. [2021-12-18 22:32:45,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20485 states, 20484 states have (on average 1.4373657488771725) internal successors, (29443), 20484 states have internal predecessors, (29443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:45,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20485 states to 20485 states and 29443 transitions. [2021-12-18 22:32:45,171 INFO L78 Accepts]: Start accepts. Automaton has 20485 states and 29443 transitions. Word has length 29 [2021-12-18 22:32:45,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:45,171 INFO L470 AbstractCegarLoop]: Abstraction has 20485 states and 29443 transitions. [2021-12-18 22:32:45,172 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) [2021-12-18 22:32:45,172 INFO L276 IsEmpty]: Start isEmpty. Operand 20485 states and 29443 transitions. [2021-12-18 22:32:45,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-18 22:32:45,184 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:45,184 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] [2021-12-18 22:32:45,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-18 22:32:45,185 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:45,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:45,185 INFO L85 PathProgramCache]: Analyzing trace with hash 598505399, now seen corresponding path program 1 times [2021-12-18 22:32:45,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:45,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872776831] [2021-12-18 22:32:45,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:45,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:45,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:45,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:45,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872776831] [2021-12-18 22:32:45,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872776831] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:45,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:45,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:45,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023883802] [2021-12-18 22:32:45,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:45,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:45,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:45,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:45,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:45,198 INFO L87 Difference]: Start difference. First operand 20485 states and 29443 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) [2021-12-18 22:32:45,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:45,246 INFO L93 Difference]: Finished difference Result 20743 states and 29444 transitions. [2021-12-18 22:32:45,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:45,246 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 [2021-12-18 22:32:45,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:45,272 INFO L225 Difference]: With dead ends: 20743 [2021-12-18 22:32:45,272 INFO L226 Difference]: Without dead ends: 20743 [2021-12-18 22:32:45,273 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 [2021-12-18 22:32:45,273 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 62 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 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 [2021-12-18 22:32:45,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 192 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:45,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20743 states. [2021-12-18 22:32:45,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20743 to 20741. [2021-12-18 22:32:45,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20741 states, 20740 states have (on average 1.4196239151398264) internal successors, (29443), 20740 states have internal predecessors, (29443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:45,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20741 states to 20741 states and 29443 transitions. [2021-12-18 22:32:45,532 INFO L78 Accepts]: Start accepts. Automaton has 20741 states and 29443 transitions. Word has length 30 [2021-12-18 22:32:45,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:45,532 INFO L470 AbstractCegarLoop]: Abstraction has 20741 states and 29443 transitions. [2021-12-18 22:32:45,532 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) [2021-12-18 22:32:45,532 INFO L276 IsEmpty]: Start isEmpty. Operand 20741 states and 29443 transitions. [2021-12-18 22:32:45,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-18 22:32:45,543 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:45,543 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] [2021-12-18 22:32:45,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-18 22:32:45,543 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:45,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:45,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1395639307, now seen corresponding path program 1 times [2021-12-18 22:32:45,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:45,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545319901] [2021-12-18 22:32:45,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:45,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:45,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:45,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:45,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545319901] [2021-12-18 22:32:45,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545319901] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:45,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:45,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:45,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474226548] [2021-12-18 22:32:45,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:45,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:45,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:45,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:45,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:45,557 INFO L87 Difference]: Start difference. First operand 20741 states and 29443 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) [2021-12-18 22:32:45,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:45,618 INFO L93 Difference]: Finished difference Result 35847 states and 51460 transitions. [2021-12-18 22:32:45,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:45,619 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 [2021-12-18 22:32:45,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:45,670 INFO L225 Difference]: With dead ends: 35847 [2021-12-18 22:32:45,670 INFO L226 Difference]: Without dead ends: 35847 [2021-12-18 22:32:45,671 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 [2021-12-18 22:32:45,672 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 41 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 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 [2021-12-18 22:32:45,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 157 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:45,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35847 states. [2021-12-18 22:32:46,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35847 to 30725. [2021-12-18 22:32:46,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30725 states, 30724 states have (on average 1.3749186303866685) internal successors, (42243), 30724 states have internal predecessors, (42243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:46,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30725 states to 30725 states and 42243 transitions. [2021-12-18 22:32:46,133 INFO L78 Accepts]: Start accepts. Automaton has 30725 states and 42243 transitions. Word has length 30 [2021-12-18 22:32:46,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:46,133 INFO L470 AbstractCegarLoop]: Abstraction has 30725 states and 42243 transitions. [2021-12-18 22:32:46,133 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) [2021-12-18 22:32:46,133 INFO L276 IsEmpty]: Start isEmpty. Operand 30725 states and 42243 transitions. [2021-12-18 22:32:46,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-18 22:32:46,152 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:46,152 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] [2021-12-18 22:32:46,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-18 22:32:46,153 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:46,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:46,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1310980087, now seen corresponding path program 1 times [2021-12-18 22:32:46,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:46,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532387633] [2021-12-18 22:32:46,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:46,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:46,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:46,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:46,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532387633] [2021-12-18 22:32:46,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532387633] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:46,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:46,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:46,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898260648] [2021-12-18 22:32:46,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:46,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:46,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:46,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:46,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:46,166 INFO L87 Difference]: Start difference. First operand 30725 states and 42243 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) [2021-12-18 22:32:46,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:46,238 INFO L93 Difference]: Finished difference Result 40455 states and 55300 transitions. [2021-12-18 22:32:46,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:46,238 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 [2021-12-18 22:32:46,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:46,412 INFO L225 Difference]: With dead ends: 40455 [2021-12-18 22:32:46,413 INFO L226 Difference]: Without dead ends: 40455 [2021-12-18 22:32:46,413 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 [2021-12-18 22:32:46,414 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 59 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 208 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 [2021-12-18 22:32:46,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 208 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:46,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40455 states. [2021-12-18 22:32:46,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40455 to 40453. [2021-12-18 22:32:46,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40453 states, 40452 states have (on average 1.367027588252744) internal successors, (55299), 40452 states have internal predecessors, (55299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:46,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40453 states to 40453 states and 55299 transitions. [2021-12-18 22:32:46,824 INFO L78 Accepts]: Start accepts. Automaton has 40453 states and 55299 transitions. Word has length 30 [2021-12-18 22:32:46,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:46,825 INFO L470 AbstractCegarLoop]: Abstraction has 40453 states and 55299 transitions. [2021-12-18 22:32:46,825 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) [2021-12-18 22:32:46,825 INFO L276 IsEmpty]: Start isEmpty. Operand 40453 states and 55299 transitions. [2021-12-18 22:32:46,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-18 22:32:46,844 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:46,844 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] [2021-12-18 22:32:46,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-18 22:32:46,845 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:46,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:46,845 INFO L85 PathProgramCache]: Analyzing trace with hash -314930436, now seen corresponding path program 1 times [2021-12-18 22:32:46,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:46,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883926507] [2021-12-18 22:32:46,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:46,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:46,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:46,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:46,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883926507] [2021-12-18 22:32:46,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883926507] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:46,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:46,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:46,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886165550] [2021-12-18 22:32:46,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:46,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:46,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:46,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:46,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:46,859 INFO L87 Difference]: Start difference. First operand 40453 states and 55299 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) [2021-12-18 22:32:46,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:46,949 INFO L93 Difference]: Finished difference Result 40967 states and 55300 transitions. [2021-12-18 22:32:46,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:46,949 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 [2021-12-18 22:32:46,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:46,992 INFO L225 Difference]: With dead ends: 40967 [2021-12-18 22:32:46,992 INFO L226 Difference]: Without dead ends: 40967 [2021-12-18 22:32:46,993 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 [2021-12-18 22:32:46,993 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 61 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 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 [2021-12-18 22:32:46,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 188 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:47,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40967 states. [2021-12-18 22:32:47,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40967 to 40965. [2021-12-18 22:32:47,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40965 states, 40964 states have (on average 1.3499414119714872) internal successors, (55299), 40964 states have internal predecessors, (55299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:47,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40965 states to 40965 states and 55299 transitions. [2021-12-18 22:32:47,513 INFO L78 Accepts]: Start accepts. Automaton has 40965 states and 55299 transitions. Word has length 31 [2021-12-18 22:32:47,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:47,513 INFO L470 AbstractCegarLoop]: Abstraction has 40965 states and 55299 transitions. [2021-12-18 22:32:47,513 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) [2021-12-18 22:32:47,514 INFO L276 IsEmpty]: Start isEmpty. Operand 40965 states and 55299 transitions. [2021-12-18 22:32:47,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-18 22:32:47,532 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:47,532 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] [2021-12-18 22:32:47,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-18 22:32:47,533 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:47,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:47,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1985892154, now seen corresponding path program 1 times [2021-12-18 22:32:47,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:47,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987969663] [2021-12-18 22:32:47,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:47,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:47,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:47,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:47,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987969663] [2021-12-18 22:32:47,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987969663] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:47,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:47,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:47,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596741961] [2021-12-18 22:32:47,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:47,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:47,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:47,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:47,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:47,546 INFO L87 Difference]: Start difference. First operand 40965 states and 55299 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) [2021-12-18 22:32:47,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:47,844 INFO L93 Difference]: Finished difference Result 79879 states and 104452 transitions. [2021-12-18 22:32:47,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:47,844 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 [2021-12-18 22:32:47,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:47,924 INFO L225 Difference]: With dead ends: 79879 [2021-12-18 22:32:47,924 INFO L226 Difference]: Without dead ends: 79879 [2021-12-18 22:32:47,924 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 [2021-12-18 22:32:47,925 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 59 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 175 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 [2021-12-18 22:32:47,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 175 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:47,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79879 states. [2021-12-18 22:32:48,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79879 to 79877. [2021-12-18 22:32:48,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79877 states, 79876 states have (on average 1.3076643797886724) internal successors, (104451), 79876 states have internal predecessors, (104451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:48,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79877 states to 79877 states and 104451 transitions. [2021-12-18 22:32:48,798 INFO L78 Accepts]: Start accepts. Automaton has 79877 states and 104451 transitions. Word has length 31 [2021-12-18 22:32:48,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:48,799 INFO L470 AbstractCegarLoop]: Abstraction has 79877 states and 104451 transitions. [2021-12-18 22:32:48,799 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) [2021-12-18 22:32:48,799 INFO L276 IsEmpty]: Start isEmpty. Operand 79877 states and 104451 transitions. [2021-12-18 22:32:48,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-18 22:32:48,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:48,834 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] [2021-12-18 22:32:48,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-18 22:32:48,834 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:48,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:48,835 INFO L85 PathProgramCache]: Analyzing trace with hash -720727240, now seen corresponding path program 1 times [2021-12-18 22:32:48,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:48,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272027585] [2021-12-18 22:32:48,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:48,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:48,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:48,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:48,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272027585] [2021-12-18 22:32:48,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272027585] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:48,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:48,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:48,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653802586] [2021-12-18 22:32:48,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:48,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:48,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:48,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:48,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:48,851 INFO L87 Difference]: Start difference. First operand 79877 states and 104451 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) [2021-12-18 22:32:49,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:49,037 INFO L93 Difference]: Finished difference Result 88071 states and 117764 transitions. [2021-12-18 22:32:49,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:49,037 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 [2021-12-18 22:32:49,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:49,131 INFO L225 Difference]: With dead ends: 88071 [2021-12-18 22:32:49,131 INFO L226 Difference]: Without dead ends: 88071 [2021-12-18 22:32:49,131 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 [2021-12-18 22:32:49,132 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 38 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 202 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 [2021-12-18 22:32:49,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 202 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:49,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88071 states. [2021-12-18 22:32:50,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88071 to 79877. [2021-12-18 22:32:50,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79877 states, 79876 states have (on average 1.2948445089889329) internal successors, (103427), 79876 states have internal predecessors, (103427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:50,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79877 states to 79877 states and 103427 transitions. [2021-12-18 22:32:50,166 INFO L78 Accepts]: Start accepts. Automaton has 79877 states and 103427 transitions. Word has length 31 [2021-12-18 22:32:50,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:50,167 INFO L470 AbstractCegarLoop]: Abstraction has 79877 states and 103427 transitions. [2021-12-18 22:32:50,167 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) [2021-12-18 22:32:50,167 INFO L276 IsEmpty]: Start isEmpty. Operand 79877 states and 103427 transitions. [2021-12-18 22:32:50,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-18 22:32:50,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:50,195 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] [2021-12-18 22:32:50,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-18 22:32:50,195 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:50,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:50,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1433330092, now seen corresponding path program 1 times [2021-12-18 22:32:50,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:50,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122686637] [2021-12-18 22:32:50,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:50,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:50,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:50,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:50,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122686637] [2021-12-18 22:32:50,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122686637] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:50,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:50,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:50,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453634492] [2021-12-18 22:32:50,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:50,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:50,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:50,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:50,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:50,211 INFO L87 Difference]: Start difference. First operand 79877 states and 103427 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) [2021-12-18 22:32:50,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:50,624 INFO L93 Difference]: Finished difference Result 134151 states and 174084 transitions. [2021-12-18 22:32:50,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:50,624 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 [2021-12-18 22:32:50,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:50,761 INFO L225 Difference]: With dead ends: 134151 [2021-12-18 22:32:50,762 INFO L226 Difference]: Without dead ends: 134151 [2021-12-18 22:32:50,763 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 [2021-12-18 22:32:50,764 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 35 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 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 [2021-12-18 22:32:50,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 153 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:50,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134151 states. [2021-12-18 22:32:52,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134151 to 121861. [2021-12-18 22:32:52,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121861 states, 121860 states have (on average 1.2604874446085672) internal successors, (153603), 121860 states have internal predecessors, (153603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:52,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121861 states to 121861 states and 153603 transitions. [2021-12-18 22:32:52,338 INFO L78 Accepts]: Start accepts. Automaton has 121861 states and 153603 transitions. Word has length 32 [2021-12-18 22:32:52,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:52,338 INFO L470 AbstractCegarLoop]: Abstraction has 121861 states and 153603 transitions. [2021-12-18 22:32:52,338 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) [2021-12-18 22:32:52,338 INFO L276 IsEmpty]: Start isEmpty. Operand 121861 states and 153603 transitions. [2021-12-18 22:32:52,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-18 22:32:52,392 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:52,393 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] [2021-12-18 22:32:52,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-18 22:32:52,393 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:52,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:52,393 INFO L85 PathProgramCache]: Analyzing trace with hash -155017810, now seen corresponding path program 1 times [2021-12-18 22:32:52,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:52,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584539477] [2021-12-18 22:32:52,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:52,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:52,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:52,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:52,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584539477] [2021-12-18 22:32:52,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584539477] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:52,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:52,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:52,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435280329] [2021-12-18 22:32:52,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:52,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:52,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:52,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:52,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:52,405 INFO L87 Difference]: Start difference. First operand 121861 states and 153603 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) [2021-12-18 22:32:52,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:52,955 INFO L93 Difference]: Finished difference Result 156679 states and 194564 transitions. [2021-12-18 22:32:52,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:52,956 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 [2021-12-18 22:32:52,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:53,109 INFO L225 Difference]: With dead ends: 156679 [2021-12-18 22:32:53,109 INFO L226 Difference]: Without dead ends: 156679 [2021-12-18 22:32:53,110 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 [2021-12-18 22:32:53,110 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 57 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 210 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 [2021-12-18 22:32:53,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 210 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:53,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156679 states. [2021-12-18 22:32:54,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156679 to 156677. [2021-12-18 22:32:54,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156677 states, 156676 states have (on average 1.2418175087441599) internal successors, (194563), 156676 states have internal predecessors, (194563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:54,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156677 states to 156677 states and 194563 transitions. [2021-12-18 22:32:54,842 INFO L78 Accepts]: Start accepts. Automaton has 156677 states and 194563 transitions. Word has length 32 [2021-12-18 22:32:54,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:54,843 INFO L470 AbstractCegarLoop]: Abstraction has 156677 states and 194563 transitions. [2021-12-18 22:32:54,843 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) [2021-12-18 22:32:54,843 INFO L276 IsEmpty]: Start isEmpty. Operand 156677 states and 194563 transitions. [2021-12-18 22:32:54,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-18 22:32:54,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:54,912 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, 1] [2021-12-18 22:32:54,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-18 22:32:54,913 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:54,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:54,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1483775695, now seen corresponding path program 1 times [2021-12-18 22:32:54,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:54,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672751378] [2021-12-18 22:32:54,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:54,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:54,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:54,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:54,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672751378] [2021-12-18 22:32:54,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672751378] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:54,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:54,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:54,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875938064] [2021-12-18 22:32:54,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:54,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:54,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:54,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:54,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:54,927 INFO L87 Difference]: Start difference. First operand 156677 states and 194563 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:55,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:55,601 INFO L93 Difference]: Finished difference Result 159751 states and 196612 transitions. [2021-12-18 22:32:55,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:55,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-12-18 22:32:55,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:55,758 INFO L225 Difference]: With dead ends: 159751 [2021-12-18 22:32:55,758 INFO L226 Difference]: Without dead ends: 159751 [2021-12-18 22:32:55,759 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 [2021-12-18 22:32:55,759 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 59 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 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 [2021-12-18 22:32:55,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 180 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:55,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159751 states. [2021-12-18 22:32:57,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159751 to 159749. [2021-12-18 22:32:57,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159749 states, 159748 states have (on average 1.2307571925783107) internal successors, (196611), 159748 states have internal predecessors, (196611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:57,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159749 states to 159749 states and 196611 transitions. [2021-12-18 22:32:57,490 INFO L78 Accepts]: Start accepts. Automaton has 159749 states and 196611 transitions. Word has length 33 [2021-12-18 22:32:57,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:32:57,491 INFO L470 AbstractCegarLoop]: Abstraction has 159749 states and 196611 transitions. [2021-12-18 22:32:57,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:57,491 INFO L276 IsEmpty]: Start isEmpty. Operand 159749 states and 196611 transitions. [2021-12-18 22:32:57,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-18 22:32:57,555 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:32:57,555 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, 1] [2021-12-18 22:32:57,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-18 22:32:57,556 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:32:57,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:32:57,556 INFO L85 PathProgramCache]: Analyzing trace with hash -510369011, now seen corresponding path program 1 times [2021-12-18 22:32:57,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:32:57,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893936097] [2021-12-18 22:32:57,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:32:57,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:32:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:32:57,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:32:57,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:32:57,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893936097] [2021-12-18 22:32:57,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893936097] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:32:57,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:32:57,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:32:57,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725114218] [2021-12-18 22:32:57,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:32:57,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:32:57,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:32:57,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:32:57,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:32:57,568 INFO L87 Difference]: Start difference. First operand 159749 states and 196611 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:32:58,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:32:58,418 INFO L93 Difference]: Finished difference Result 262151 states and 319492 transitions. [2021-12-18 22:32:58,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:32:58,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-12-18 22:32:58,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:32:58,754 INFO L225 Difference]: With dead ends: 262151 [2021-12-18 22:32:58,754 INFO L226 Difference]: Without dead ends: 262151 [2021-12-18 22:32:58,754 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 [2021-12-18 22:32:58,755 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 32 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 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 [2021-12-18 22:32:58,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 151 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:32:58,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262151 states. [2021-12-18 22:33:00,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262151 to 245765. [2021-12-18 22:33:01,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245765 states, 245764 states have (on average 1.1999926759004573) internal successors, (294915), 245764 states have internal predecessors, (294915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:01,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245765 states to 245765 states and 294915 transitions. [2021-12-18 22:33:01,942 INFO L78 Accepts]: Start accepts. Automaton has 245765 states and 294915 transitions. Word has length 33 [2021-12-18 22:33:01,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:33:01,942 INFO L470 AbstractCegarLoop]: Abstraction has 245765 states and 294915 transitions. [2021-12-18 22:33:01,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:01,942 INFO L276 IsEmpty]: Start isEmpty. Operand 245765 states and 294915 transitions. [2021-12-18 22:33:02,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-18 22:33:02,104 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:02,104 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, 1] [2021-12-18 22:33:02,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-18 22:33:02,104 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:33:02,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:02,105 INFO L85 PathProgramCache]: Analyzing trace with hash -2098716913, now seen corresponding path program 1 times [2021-12-18 22:33:02,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:33:02,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326318630] [2021-12-18 22:33:02,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:02,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:33:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:02,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:33:02,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:33:02,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326318630] [2021-12-18 22:33:02,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326318630] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:33:02,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:33:02,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:33:02,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73236421] [2021-12-18 22:33:02,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:33:02,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:33:02,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:33:02,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:33:02,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:33:02,119 INFO L87 Difference]: Start difference. First operand 245765 states and 294915 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:02,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:33:02,716 INFO L93 Difference]: Finished difference Result 311303 states and 364548 transitions. [2021-12-18 22:33:02,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:33:02,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-12-18 22:33:02,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:33:03,637 INFO L225 Difference]: With dead ends: 311303 [2021-12-18 22:33:03,638 INFO L226 Difference]: Without dead ends: 311303 [2021-12-18 22:33:03,638 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 [2021-12-18 22:33:03,638 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 56 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 211 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 [2021-12-18 22:33:03,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 211 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:33:03,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311303 states. [2021-12-18 22:33:06,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311303 to 311301. [2021-12-18 22:33:06,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311301 states, 311300 states have (on average 1.1710472213299068) internal successors, (364547), 311300 states have internal predecessors, (364547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:07,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311301 states to 311301 states and 364547 transitions. [2021-12-18 22:33:07,099 INFO L78 Accepts]: Start accepts. Automaton has 311301 states and 364547 transitions. Word has length 33 [2021-12-18 22:33:07,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:33:07,100 INFO L470 AbstractCegarLoop]: Abstraction has 311301 states and 364547 transitions. [2021-12-18 22:33:07,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:07,100 INFO L276 IsEmpty]: Start isEmpty. Operand 311301 states and 364547 transitions. [2021-12-18 22:33:07,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-18 22:33:07,265 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:07,265 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, 1, 1] [2021-12-18 22:33:07,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-18 22:33:07,266 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:33:07,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:07,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1358645987, now seen corresponding path program 1 times [2021-12-18 22:33:07,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:33:07,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101977594] [2021-12-18 22:33:07,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:07,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:33:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:07,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:33:07,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:33:07,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101977594] [2021-12-18 22:33:07,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101977594] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:33:07,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:33:07,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:33:07,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060805320] [2021-12-18 22:33:07,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:33:07,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:33:07,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:33:07,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:33:07,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:33:07,280 INFO L87 Difference]: Start difference. First operand 311301 states and 364547 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:08,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:33:08,506 INFO L93 Difference]: Finished difference Result 315399 states and 364548 transitions. [2021-12-18 22:33:08,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:33:08,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-12-18 22:33:08,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:33:08,902 INFO L225 Difference]: With dead ends: 315399 [2021-12-18 22:33:08,902 INFO L226 Difference]: Without dead ends: 315399 [2021-12-18 22:33:08,902 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 [2021-12-18 22:33:08,903 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 58 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 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 [2021-12-18 22:33:08,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 176 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:33:09,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315399 states.